CWEN-A


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementClassOfStock
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding
us-gaap:StatementClassOfStock
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:StatementClassOfStock
us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted
us-gaap:StatementClassOfStock
us-gaap:EarningsPerShareBasic
us-gaap:StatementClassOfStock
us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareBasicAndDiluted
us-gaap:StatementClassOfStock

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:CostOfRevenue
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:CostsAndExpenses

us-gaap:GainsLossesOnExtinguishmentOfDebt
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:DebtInstrument

us-gaap:GeneralAndAdministrativeExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ConsolidationItems

us-gaap:InterestExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:NetIncomeLoss
us-gaap:StatementClassOfStock

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
dei:LegalEntity, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic
us-gaap:StatementClassOfStock
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherNonoperatingIncomeExpense
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:ProfitLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:StatementEquityComponents

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:Revenues
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:ProductOrService
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:Assets
dei:LegalEntity
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:Liabilities
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesAndStockholdersEquity
dei:LegalEntity
dei:LegalEntity, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:CapitalUnitsByClass
us-gaap:StockholdersEquity

us-gaap:AssetsCurrent
us-gaap:ConsolidatedEntities
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:PrepaidExpenseAndOtherAssetsCurrent
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:AssetsNoncurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:ConsolidatedEntities
us-gaap:PropertyPlantAndEquipmentByType
dei:LegalEntity
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
us-gaap:ConsolidatedEntities
us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:ConsolidatedEntities
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset
dei:LegalEntity

us-gaap:OtherAssetsNoncurrent
us-gaap:ConsolidatedEntities

us-gaap:OtherAssets
us-gaap:ConsolidatedEntities

us-gaap:AccountsPayableCurrent

us-gaap:LiabilitiesCurrent
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:LongTermDebtCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:LiabilitiesNoncurrent
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:LongTermDebt

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:MinorityInterest
dei:LegalEntity

us-gaap:OtherLiabilitiesNoncurrent
dei:LegalEntity

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
dei:LegalEntity, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:CapitalUnitsByClass
us-gaap:StockholdersEquity

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
dei:LegalEntity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital
dei:LegalEntity

us-gaap:RetainedEarningsAccumulatedDeficit
dei:LegalEntity

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
dei:LegalEntity
us-gaap:StatementEquityComponents

us-gaap:MinorityInterest
dei:LegalEntity

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
dei:LegalEntity, us-gaap:CounterpartyName, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:CounterpartyName, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DepreciationDepletionAndAmortization
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementClassOfStock

us-gaap:ProfitLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment
cwen:AssetAcquisition
us-gaap:PaymentsToAcquireProductiveAssets
us-gaap:CounterpartyName, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsValuationAllowance
us-gaap:CounterpartyName
cwen:AdjustmentsToAdditionalPaidInCapitalDistributionsPaidNonCashNetOfContributions
us-gaap:CounterpartyName, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:StatementEquityComponents
us-gaap:CounterpartyName, us-gaap:StatementEquityComponents

cwen:AmortizationOfIntangiblesAndOutOfMarketContracts
cwen:AssetAcquisition
cwen:AssetAcquisitionAccountPayableAndOtherCurrentLiabilities

cwen:AssetAcquisitionAcquisitionRelatedCosts
us-gaap:ConsolidationItems
cwen:AssetAcquisition
cwen:AssetAcquisitionAssetsAcquired
cwen:AssetAcquisition
cwen:AssetAcquisitionAssetsAcquiredAndLiabilitiesAssumedNet
cwen:AssetAcquisition
cwen:AssetAcquisitionCashAndCashEquivalentsAndRestrictedCash
cwen:AssetAcquisition
cwen:AssetAcquisitionConsiderationGross
cwen:AssetAcquisition
cwen:AssetAcquisitionConsiderationTransferredWorkingCapitalAndPurchasePriceAdjustments
cwen:AssetAcquisition
cwen:AssetAcquisitionCurrentAssets
cwen:AssetAcquisition
cwen:AssetAcquisitionDerivativeInstrumentNotionalAmount
cwen:AssetAcquisition
cwen:AssetAcquisitionEquityMethodInvestmentRemoved
cwen:AssetAcquisition
cwen:AssetAcquisitionLeaseLiabilitiesNoncurrent
cwen:AssetAcquisition
cwen:AssetAcquisitionLiabilitiesAssumed
cwen:AssetAcquisition
cwen:AssetAcquisitionLiabilitiesOtherCurrentAndNoncurrent
cwen:AssetAcquisition
cwen:AssetAcquisitionLongTermDebt
cwen:AssetAcquisition
cwen:AssetAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue
cwen:AssetAcquisition
cwen:AssetAcquisitionOtherAssetsCurrent
cwen:AssetAcquisition
cwen:AssetAcquisitionRestrictedCash
cwen:AssetAcquisition
cwen:AssetAcquisitionRightOfUseAsset

cwen:ChangesinPrepaidandAccruedCapacityPayments
us-gaap:DebtInstrument
cwen:GainLossOnExtinguishmentOfDeferredFinancingFees
dei:LegalEntity, us-gaap:Ownership
cwen:LimitedLiabilityCompanyLLCorLimitedPartnershipLPMembersorLimitedPartnersVotingInterest

cwen:NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestIncludingRoundingAdjustments

cwen:NoncontrollingInterestAdjustmentForPurchaseOfInterests
us-gaap:ConsolidatedEntities
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:CounterpartyName
cwen:NoncontrollingInterestDecreasefromDistributionstoNoncontrollingInterestHoldersCash
us-gaap:CounterpartyName, us-gaap:StatementEquityComponents

cwen:OperatingLeaseRightofUseAssetAmortization

cwen:PaymentsForAssetAcquisition
cwen:AssetAcquisition
cwen:AssetAcquisition
cwen:PaymentsForAssetAcquisitionNetCashOutflow

cwen:PaymentsToAcquireAssetsFromAffiliate

cwen:PaymentsToAcquireBusinessTwo

cwen:PaymentsToFundProjectReserveAccounts

cwen:PaymenttoAcquireBusinessunderCommonControl
cwen:AssetAcquisition
cwen:PropertyPlantAndEquipmentAdditionsNet
us-gaap:ConsolidationItems
cwen:RevenueMarktomarketHedgingActivities
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

cwen:SaleOfStockCommissionFees

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther
us-gaap:StatementEquityComponents

us-gaap:AmortizationOfFinancingCostsAndDiscounts

us-gaap:BusinessCombinationAcquisitionRelatedCosts
us-gaap:ConsolidationItems
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:BusinessCombinationConsiderationTransferred1
us-gaap:CounterpartyName, us-gaap:BusinessAcquisition
us-gaap:ConsolidationItems
us-gaap:CapitalizedContractCostAmortization
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths
us-gaap:SubsequentEventType
us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CostsIncurredDevelopmentCosts
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:DepreciationAmortizationAndAccretionNet
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeLossOnDerivative
us-gaap:Position, us-gaap:UnderlyingAssetClass
us-gaap:DerivativeNonmonetaryNotionalAmountEnergyMeasure

us-gaap:DividendsCommonStock
us-gaap:CounterpartyName
us-gaap:CounterpartyName, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:EquityMethodInvestmentDividendsOrDistributions
us-gaap:StatementBusinessSegments
us-gaap:EquityMethodInvestmentOtherThanTemporaryImpairment

us-gaap:EquityMethodInvestmentRealizedGainLossOnDisposal
us-gaap:ConsolidationItems
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements
cwen:AssetAcquisition
us-gaap:FinitelivedIntangibleAssetsAcquired1

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncreaseDecreaseInDerivativeAssetsAndLiabilities

us-gaap:IncreaseDecreaseInIncomeTaxes

us-gaap:LeaseCost
dei:LegalEntity, us-gaap:Ownership
us-gaap:LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
us-gaap:Ownership
cwen:AssetAcquisition
us-gaap:MinorityInterestDecreaseFromRedemptions
cwen:AssetAcquisition, us-gaap:StatementEquityComponents
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:StatementEquityComponents
us-gaap:CounterpartyName
us-gaap:NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest
us-gaap:CounterpartyName, us-gaap:StatementEquityComponents

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseLeaseIncome
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:ProductOrService
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService
us-gaap:StatementBusinessSegments

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax

us-gaap:OtherCostAndExpenseOperating

us-gaap:PaymentsForFees

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsOfOrdinaryDividends
us-gaap:BusinessAcquisition
us-gaap:PaymentsToAcquireBusinessesGross
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:CounterpartyName, us-gaap:BusinessAcquisition
us-gaap:CounterpartyName, us-gaap:BusinessAcquisition, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:PaymentsToAcquireEquityMethodInvestments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:PaymentsToAcquireInterestInSubsidiariesAndAffiliates
us-gaap:ConsolidatedEntities, us-gaap:SubsequentEventType

us-gaap:PaymentsToMinorityShareholders

us-gaap:ProceedsFromCollectionOfNotesReceivable

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital

us-gaap:ProceedsFromInsuranceSettlementInvestingActivities

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOrSaleOfEquity
us-gaap:SubsidiarySaleOfStock

us-gaap:ProceedsFromLinesOfCredit
dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:DebtInstrument

us-gaap:ProceedsFromMinorityShareholders
cwen:AssetAcquisition
us-gaap:CounterpartyName

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsToMinorityShareholders

us-gaap:ProceedsFromSaleOfProductiveAssets
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:RepaymentsOfDebt
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:RepaymentsOfLinesOfCredit
us-gaap:DebtInstrument

us-gaap:StockIssuedDuringPeriodValueAcquisitions
cwen:AssetAcquisition
cwen:AssetAcquisition, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:Ownership
us-gaap:SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest
us-gaap:Ownership, us-gaap:SubsequentEventType

us-gaap:UnrealizedGainLossOnDerivatives
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:StatementEquityComponents
us-gaap:ConsolidatedEntities, us-gaap:SubsequentEventType
us-gaap:VariableInterestEntityOwnershipPercentage

us-gaap:VariableLeaseCost

cwen:ATMProgramAvailableForIssuance

cwen:AccumulatedOtherComprehensiveIncomeLossCumulativeChangeInGainLossFromCashFlowHedgesTaxAmount
cwen:AssetAcquisition
cwen:AssetAcquisitionPercentageEquityInterestsAcquired

cwen:BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedLiabilitiesOther
us-gaap:BusinessAcquisition

cwen:CapitalExpenditures
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

cwen:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsTax
us-gaap:DebtInstrument
cwen:DebtInstrumentRepurchasedFaceAmountOptionallyExercisedRemainingPrincipalNotValidlyTenderedAndPurchasedInTenderOffer
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:DebtInstrument
cwen:DebtInstrumentRepurchasedFaceAmountSubjectToGuaranteedDeliveryProcedures

cwen:DeferredTaxAssetsInterestExpenseDisallowedCarryforwardinvestmentsinProjects

cwen:DeferredTaxAssetsNetExcludingValuationAllowance

cwen:DerivativeAssetFairValueAmountOffsetAgainstCollateralNetOfDerivativeLiabilityFairValueAmountOffsetAgainstCollateral
us-gaap:DerivativeInstrumentRisk
us-gaap:SubsequentEventType
cwen:DistributionReserveAccountsDistributionsPaid
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:SubsequentEventType
cwen:EquityMethodInvestmentAdditionalOwnershipAcquired

cwen:FairValueAssetsMeasuredOnRecurringBasisValuationTechniquesImpactOfCreditReserveToFairValue

cwen:FairValueofGrossDerivativeAssetsLiabilitiesNet
us-gaap:DerivativeInstrumentRisk
dei:LegalEntity, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
cwen:IncomeAllocationPercentage
us-gaap:ConsolidatedEntities
us-gaap:CounterpartyName, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:StatementEquityComponents

cwen:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour
us-gaap:ConsolidatedEntities
cwen:NumberOfSolarProjects
us-gaap:ConsolidatedEntities, us-gaap:SubsequentEventType
us-gaap:FinancialInstrument
cwen:PercentOfOtherFinancialInstrumentLiabilitiesUsingLevel3FairValueInputs
us-gaap:CounterpartyName, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty
cwen:PercentageOfOwnership

cwen:PercentageofCashAvailableforDistributions
cwen:Period, dei:LegalEntity
cwen:Period, dei:LegalEntity, us-gaap:OtherOwnershipInterestsByName
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

cwen:PercentofDerivativeLiabilitiesUsingLevel3FairValueInputs
us-gaap:DebtInstrument
cwen:Percentoffacevalue
cwen:PowerGenerationFacilitiesByType
cwen:PowerGenerationCapacityMegawatts
dei:LegalEntity
us-gaap:BusinessAcquisition
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:SubsequentEventType
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:BalanceSheetLocation, us-gaap:IncomeTaxAuthority
cwen:PowerPurchaseAgreementRefundableTaxCreditAggregateAmountUtilized

cwen:PrepaidLongTermServiceAgreement
cwen:AssetAcquisition
cwen:RepaymentOfDebtAcquiredInAssetAcquisition
us-gaap:BusinessAcquisition
cwen:PowerGenerationFacilitiesByType
cwen:SteamAndChilledWaterCapacityMegawattsThermalEquivalent
dei:LegalEntity, us-gaap:OtherOwnershipInterestsByName
cwen:TaxableIncomeAllocationPostFlip
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:CapitalUnitsByClass, us-gaap:OtherOwnershipInterestsByName
dei:LegalEntity, us-gaap:OtherOwnershipInterestsByName
cwen:TaxableIncomeAllocationPreFlip
us-gaap:BusinessAcquisition, us-gaap:OtherOwnershipInterestsByName
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:CapitalUnitsByClass, us-gaap:OtherOwnershipInterestsByName
us-gaap:StatementClassOfStock
dei:EntityCommonStockSharesOutstanding

us-gaap:AccountsReceivableNet
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:AociIncludingPortionAttributableToNoncontrollingInterestTax

us-gaap:AssetRetirementObligation
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:ConsolidatedEntities
us-gaap:AssetsNet
cwen:PowerGenerationFacilitiesByType, us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired

us-gaap:BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest
us-gaap:ConsolidatedEntities

us-gaap:DebtInstrumentCarryingAmount
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument
us-gaap:DebtInstrumentFaceAmount
us-gaap:DebtInstrument
us-gaap:DebtInstrument
us-gaap:DebtInstrumentRepurchaseAmount
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:DebtInstrumentUnamortizedDiscount

us-gaap:DebtInstrumentUnamortizedPremium

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredIncomeTaxAssetsNet
dei:LegalEntity

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards

us-gaap:DeferredTaxAssetsDerivativeInstruments

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssetFairValueGrossLiability
us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
us-gaap:DerivativeAssetLiabilityNetMeasurementInput
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssets
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:DerivativeAssetsCurrent

us-gaap:DerivativeAssetsNoncurrent

us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:HedgingDesignation

us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:HedgingDesignation
dei:LegalEntity
us-gaap:DerivativeLiabilities
dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
dei:LegalEntity, us-gaap:SubsequentEventType
us-gaap:DerivativeInstrumentRisk
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:DerivativeLiabilitiesCurrent

us-gaap:DerivativeLiabilitiesNoncurrent
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeLiabilityFairValueGrossAsset
us-gaap:Range, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType
us-gaap:DerivativeLiabilityMeasurementInput
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeNotionalAmount
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType
us-gaap:DerivativeInstrumentRisk
us-gaap:Position, us-gaap:UnderlyingAssetClass
us-gaap:UnderlyingAssetClass
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:SubsequentEventType
us-gaap:DisposalGroupIncludingDiscontinuedOperationConsideration

us-gaap:DueFromAffiliateCurrent
dei:LegalEntity

us-gaap:DueToAffiliateCurrent
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:DueToAffiliateCurrentAndNoncurrent
us-gaap:DebtInstrument
us-gaap:DueToAffiliateNoncurrent
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:EquityMethodInvestmentOwnershipPercentage
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:CapitalUnitsByClass

us-gaap:EquityMethodInvestments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsCurrentCarryingValue

us-gaap:InterestPayableCurrentAndNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LessorOperatingLeasePaymentsToBeReceived
dei:LegalEntity
us-gaap:StatementBusinessSegments

us-gaap:LessorOperatingLeasePaymentsToBeReceivedFiveYears
dei:LegalEntity
us-gaap:StatementBusinessSegments
dei:LegalEntity
us-gaap:LessorOperatingLeasePaymentsToBeReceivedFourYears
us-gaap:StatementBusinessSegments
dei:LegalEntity
us-gaap:LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths
us-gaap:StatementBusinessSegments

us-gaap:LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear

us-gaap:LessorOperatingLeasePaymentsToBeReceivedThereafter
us-gaap:StatementBusinessSegments
dei:LegalEntity
us-gaap:LessorOperatingLeasePaymentsToBeReceivedThreeYears
us-gaap:StatementBusinessSegments
dei:LegalEntity
us-gaap:LessorOperatingLeasePaymentsToBeReceivedTwoYears
us-gaap:StatementBusinessSegments
us-gaap:DebtInstrument
us-gaap:LineOfCreditFacilityFairValueOfAmountOutstanding
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:DebtInstrument
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities
us-gaap:FairValueByMeasurementBasis

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
cwen:PowerGenerationFacilitiesByType, us-gaap:Ownership
us-gaap:MinorityInterestOwnershipPercentageByNoncontrollingOwners
cwen:AssetAcquisition, us-gaap:Ownership
us-gaap:MinorityInterestOwnershipPercentageByParent
us-gaap:Ownership, us-gaap:SubsequentEventType

us-gaap:NonRecourseDebt
us-gaap:ConsolidatedEntities
us-gaap:NoncontrollingInterestInVariableInterestEntity
dei:LegalEntity
us-gaap:NotesAndLoansReceivableNetCurrent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:OtherAssetsFairValueDisclosure

us-gaap:OtherCashEquivalentsAtCarryingValue
dei:LegalEntity

us-gaap:OtherIntangibleAssetsNet
us-gaap:ConsolidatedEntities
us-gaap:OtherLiabilities
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
us-gaap:PercentageOfDebtHedgedByInterestRateDerivatives
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType

us-gaap:PurchaseObligation

us-gaap:PurchaseObligationDueInNextTwelveMonths

us-gaap:RestrictedCashAndCashEquivalents
cwen:Purpose
us-gaap:RestrictedCashAndCashEquivalentsCashAndCashEquivalents

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue
cwen:Purpose
us-gaap:RestrictedCashAndCashEquivalentsCashAndCashEquivalents

us-gaap:RetainedEarningsUndistributedEarningsFromEquityMethodInvestees

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary

us-gaap:ValuationAllowancesAndReservesBalance

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Income Tax Expense Benefit
Balance Sheet
Cash And Cash Equivalents At Carrying Value
Assets
Inventory Net
Current Assets
Inventory Net
NonCurrent Assets
Other Assets Noncurrent
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Operating Lease Liability
Current Liabilities
Operating Lease Liability Current
Noncurrent Liabilities
Other Liabilities Noncurrent
Stockholders Equity
Retained Earnings Accumulated Deficit
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Gain Loss On Sale Of Property Plant Equipment
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
OperatingLeaseLiability
Operating Lease Liability Current
NonoperatingIncomeExpense
Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Remainder Of Fiscal Year
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Accumulated Amortization

Tables

  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:CommonStockValue ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄1.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.0NA0.0NANANANANA1e-05NA1e-05NANANA
 us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding us-gaap:StatementClassOfStock us-gaap:CommonClassA▄▄35.035.0NANA35.035.0NA35.035.035.035.035.035.049.035.035.049.049.035.035.049.049.035.0NA35.035.0NANANANANANANANANANANANANA
 us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding us-gaap:StatementClassOfStock us-gaap:CommonClassC▄▄82.082.0NANA81.080.0NA75.075.073.073.073.069.078.065.065.075.074.063.063.073.073.063.0NA63.035.0NANANANANANANANANANANANANA
 us-gaap:WeightedAverageNumberOfSharesOutstandingBasic us-gaap:StatementClassOfStock us-gaap:CommonClassC▄▄82.082.0NANA81.080.0NA75.073.073.073.073.069.067.065.065.064.063.063.063.063.063.063.063.063.035.035.0NANANANANANANANANANANANA
 us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassANANA35.035.035.035.035.0NA35.035.035.0NA35.0NA35.0NANANA35.0NANANA35.035.035.035.035.0NA31.023.0NANANANANANANANANA
 us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassCNANA82.081.081.080.079.0NANA73.073.0NANANA65.0NANANA63.0NANANA63.063.063.035.035.0NA31.023.0NANANANANANANANANA
 us-gaap:EarningsPerShareBasic us-gaap:StatementClassOfStock us-gaap:CommonClassA▁█0.180.3NANA0.270.41NANA0.36-0.22NANA0.20.77NANA0.30.29NANA0.340.33NANA0.180.15NANANANANANANANANANANANANA
 us-gaap:EarningsPerShareBasic us-gaap:StatementClassOfStock us-gaap:CommonClassC▁█0.180.3NANA0.270.41NANA0.36-0.22NANA0.20.770.16NA0.30.29-0.03-0.140.340.33NA0.120.180.15NANANANANANANANANANANANANA
 us-gaap:EarningsPerShareDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassA▁█0.180.3NANA0.270.41NANA0.36-0.22NA-0.630.20.610.16-0.710.270.26-0.03-0.140.30.290.05NA0.180.15NANANANANANANANANANANANANA
 us-gaap:EarningsPerShareDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassC▁█0.180.3NANA0.270.41NANA0.36-0.22NA-0.630.20.70.16-0.710.290.28-0.03-0.140.320.310.05NA0.180.15NANANANANANANANANANANANANA
us-gaap:EarningsPerShareBasicAndDiluted NANA0.03NANANA-0.26NANANA-0.18NANANANANANANANANANANANANANANA-0.15-0.0300000000000000270.2NA0.180.179999999999999940.39NANANANANANA
 us-gaap:EarningsPerShareBasicAndDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassANANA0.03-0.210.270.41-0.26-0.0600000000000000050.37-0.22-0.18NANANA0.16NANA0.29000000000000004-0.03NANA0.330.050.120.180.15-0.07-0.0100000000000000090.10.13NANANANANANANANANA
 us-gaap:EarningsPerShareBasicAndDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassCNANA0.03-0.20.270.41-0.26-0.06-0.36-0.22-0.18NANANA0.16NANA0.29000000000000004-0.03NANA0.330.050.120.180.15-0.07-0.0100000000000000090.10.13NANANANANANANANANA
  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
 Cost Ratio us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cwen:ConventionalGeneration█▆▅▇█▆▅▄▃▂▁▂▂118.0109.0102.0111.0116.0107.0103.093.090.084.079.086.087.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cwen:Renewables▆█▁▃▅▆▂▁▄▄▁▂▄179.0222.086.0125.0157.0180.0107.093.0151.0153.088.099.0152.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cwen:Thermal▆▄▄▂█▁▃▄▆▃▄▃▆54.049.049.044.059.042.048.049.055.047.050.047.053.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cwen:ConventionalGeneration█▆▅▇█▆▅▄▃▂▁▂▂118.0109.0102.0111.0116.0107.0103.093.090.084.079.086.087.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cwen:Thermal▆▄▄▂█▁▃▄▆▃▄▃▆54.049.049.044.059.042.048.049.055.047.050.047.053.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cwen:ConventionalGeneration█▆▅▇█▆▅▄▃▂▁▂▂118.0109.0102.0111.0116.0107.0103.093.090.084.079.086.087.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cwen:Thermal▆▄▄▂█▁▃▄▆▃▄▃▆54.049.049.044.059.042.048.049.055.047.050.047.053.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName cwen:DGPVHoldco3NANANANANA7.07.0NA9.08.04.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cwen:ConventionalGeneration█▆▅▇█▆▅▄▃▂▁▂▂118.0109.0102.0111.0116.0107.0103.093.090.084.079.086.087.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cwen:Renewables▆█▁▃▅▆▂▁▄▄▁▂▄179.0222.086.0125.0157.0180.0107.093.0151.0153.088.099.0152.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cwen:Thermal▆▄▄▂█▁▃▄▆▃▄▃▆54.049.049.044.059.042.048.049.055.047.050.047.053.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName cwen:DGPVHoldco3NANANANANA7.07.0NA9.08.04.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
 TTM Greenblatt ROC _ _▆█▃▅▇█▅▄▆▆▅▅▇█▅▄▇▇▅▁▇▇▆▆▆▆▅▅▆▅▅▅▅▅▄▄89.0133.0-14.028.0123.0130.052.06.090.087.041.054.0100.0144.049.019.095.0122.054.0-99.0117.0113.068.066.086.087.048.046.070.051.038.033.045.038.012.03.0NANANA
  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:ComprehensiveIncomeNetOfTax ▅▆▅▃▆▆▃▄▆▃▃▁▅█▅▁▆▅▄▅▆▆▄▅▄▅▃▄▅▄▄22.035.07.0-24.036.049.0-35.0-4.038.0-21.0-21.0-72.024.082.024.0-71.030.025.00.07.032.029.0-12.016.01.016.0-18.0-2.08.02.0-3.0NANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▅▅▂▃▆▇▁▃▅▅▄▄▇▆▅▄▆▆▅▁▇▆▄▆▅▇▄▄▇▆▆█▆█6.0-3.0-72.0-48.014.031.0-84.0-39.0-4.0-10.0-28.0-27.031.021.0-11.0-24.017.014.0-7.0-84.030.013.0-27.017.04.046.0-15.0-20.030.011.09.049.028.059.0NANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▆▆▃▂▆▇▁▃▆▄▃▂▆█▅▁▆▆▅▂▇▆▄▅▅▇▄▄▆▅▅▆▆▇▅▅▅28.032.0-65.0-72.050.080.0-119.0-43.034.0-31.0-49.0-99.055.0103.017.0-105.048.039.05.0-77.068.042.0-39.013.05.062.0-33.0-22.038.022.012.032.037.060.012.06.01.0NANA
us-gaap:CostOfRevenue █▇▇▆▆▆▆▆▆▅▅▅▅▅▆▆▅▅▅▄▅▅▅▇▄▄▅▃▃▂▃▂▁▁▁▁▁117.0107.0110.091.095.087.093.093.086.079.084.085.084.074.089.087.078.077.084.068.076.075.083.0101.069.067.075.057.052.045.053.035.033.032.029.031.028.0NANA
us-gaap:CostsAndExpenses ▆▆▆▆▅▅▅▆▅▅▄▄▅▄▄▆▄▄▄█▄▄▄▅▃▃▃▃▂▂▂▁▁▁▁▁▁262.0247.0251.0252.0209.0199.0206.0229.0206.0197.0176.0175.0192.0163.0176.0230.0170.0162.0164.0331.0155.0145.0152.0207.0123.0130.0132.0102.091.083.072.053.050.044.041.039.036.0NANA
us-gaap:GainsLossesOnExtinguishmentOfDebt ██▁▆▇██▆███▇██████████0.00.0-42.0-15.0-6.00.0-3.0-15.00.0-1.00.0-7.00.00.00.0-1.00.00.0-2.00.00.00.0NA0.0-2.0-7.0NA0.00.00.0NANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:ConsolidationItems us-gaap:CorporateNonSegment██▁███▇▅██0.00.0-41.00.00.00.0-3.0-15.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cwen:Renewables███▁▅█████0.00.0-1.0-15.0-6.00.00.00.00.0-1.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument cwen:A5.75SeniorNotesdue20250.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GeneralAndAdministrativeExpense ▇▇▇▃▆█▆▆▅▅▄▂▄▄▄▄▃▄▃▄▃▂▂▂▂▂▂▁▂▂▂▂▁▂▂10.010.010.04.09.012.09.09.07.07.06.03.06.06.05.05.04.06.04.06.04.03.03.03.03.03.03.01.03.02.02.02.01.02.02.0NANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▆▆▃▃▇█▂▄▆▄▄▄▇█▅▄▇▇▅▁▇▇▅▅▆▆▅▅▆▆▆▆▆▆▅▅▆▅26.039.0-96.0-78.051.0102.0-129.0-42.024.0-32.0-54.0-46.060.0103.0-1.0-51.049.053.0-2.0-152.060.070.02.00.042.045.0-20.0-21.041.036.021.027.045.034.011.05.012.0-2.0NA
us-gaap:IncomeTaxExpenseBenefit ▃▄▂▃▄▅▁▄▂▄▃▇▄▄▃█▄▄▃▁▄▄▃▄▄▄▃▂▄▃▃▃▄▃▃▃▄1.07.0-20.0-5.09.026.0-22.06.0-11.04.0-7.045.011.07.0-1.057.08.08.0-1.0-26.013.012.00.04.08.04.0-4.0-11.010.02.03.03.05.00.00.00.08.0NANA
us-gaap:InterestExpense ▄▅▃▄▄▅█▄▅▆▅▅▄▄▃▄▄▅▄▃▄▄▄▄▄▃▄▄▃▂▂▁▁▁▁▁▁84.0103.045.070.085.093.0167.067.0106.0130.0101.0106.074.071.055.069.075.086.076.061.071.062.068.062.062.044.070.069.041.029.019.011.013.06.05.03.05.0NANA
us-gaap:NetIncomeLoss ▆▇▄▁▇█▁▃▇▁▂21.035.03.0-25.032.047.0-29.0-6.039.0-24.0-20.0NANANANANANANANANANANANANANANANANA6.06.0NANA9.033.0NANANA-1.0NA
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▇▆▃▄▇█▃▄▆▆▅▅█▇▆▅▇▇▆▁▇█▆▇▇█▆▇█▇4.0-3.0-79.0-48.010.029.0-78.0-42.0-4.0-12.0-27.0-23.028.017.0-20.0-28.011.017.0-10.0-113.08.026.0-3.05.017.031.0-11.06.025.019.0NANANANANANANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic NANANA-25.032.047.0-29.0-6.039.0-24.0-20.0-68.021.079.016.0-70.029.028.0-3.0-13.033.032.05.011.017.010.0-5.00.06.06.04.04.09.0NANANANANANA
 us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassANANANANA9.0NANANA12.0-8.0NANA7.030.0NANA13.013.0NANA15.014.0NANA6.05.0NANANANANANANANANANANANANA
 us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassCNANANANA22.0NANANA27.0-16.0NANA14.055.0NANA21.021.0NANA24.023.0NANA11.05.0NANANANANANANANANANANANANA
us-gaap:NonoperatingIncomeExpense ▆▄▅▄▅▇▁▆▅▃▄▄▆▆▆▆▆▅▆▆▆▆▅▆▆▆▅▅▇▇▇██████-63.0-94.0-82.0-106.0-72.0-28.0-181.0-48.0-66.0-119.0-95.0-100.0-40.0-41.0-50.0-63.0-46.0-69.0-56.0-53.0-57.0-43.0-66.0-56.0-44.0-42.0-68.0-67.0-29.0-15.0-17.0-6.00.0-3.0-1.02.01.0NANA
us-gaap:OperatingIncomeLoss ▆█▃▅▇█▅▄▆▆▅▅▇█▅▄▇▇▅▁▇▇▆▆▆▆▅▅▆▅▅▅▅▅▄▄▄▄▄89.0133.0-14.028.0123.0130.052.06.090.087.041.054.0100.0144.049.019.095.0122.054.0-99.0117.0113.068.066.086.087.048.046.070.051.038.033.045.038.012.03.011.08.09.0
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax ▃▁█3.00.011.0NA8.04.0-12.05.0-1.05.0-2.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▃▁█3.00.011.0NA8.04.0-12.05.0-1.05.0-2.0-8.06.07.017.03.07.0-6.06.049.021.0-16.0-41.017.0-29.021.0-17.0-12.07.0-12.0-6.08.0-3.025.01.01.0-3.0NANA
us-gaap:OtherNonoperatingIncomeExpense ▃▃▃▄▁▁▄▆▄▃▆█▄▃▃▃▃▃▃▁▃▃▁▁▃▁▃▃▃▁▃▃▃▃▁▃▁1.01.01.02.00.00.02.03.02.01.03.04.02.01.01.01.01.01.01.00.01.01.00.00.01.00.01.01.01.00.01.01.01.01.00.01.00.0NANA
us-gaap:ProfitLoss ▆▆▃▃▆▇▂▃▆▄▃▂▇█▅▂▆▆▅▁▆▇▅▅▆▆▄▅▆▆▆▆▆▆▅▅▅▅▅25.032.0-76.0-73.042.076.0-107.0-48.035.0-36.0-47.0-91.049.096.00.0-98.041.045.0-1.0-126.047.058.02.013.034.041.0-16.0-10.031.034.018.024.040.034.011.05.04.0-1.05.0
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▇█▅▆▇▇▁▅▁▁▁▅▁▁▁▅▆▆▅▅▆▅▅▄▄▅▄▃▃▃▂▂▂▂▁▁▁▁▁351.0380.0237.0280.0332.0329.055.0235.064.057.055.0229.063.058.061.0231.0265.0284.0218.0232.0272.0258.0220.0209.0209.0217.0180.0148.0161.0134.0110.086.095.079.053.042.047.042.044.0
us-gaap:Revenues ▇█▅▆▇▇▅▅▆▆▅▅▆▆▅▅▆▆▅▅▆▅▅▄▄▅▄▃▃▃▂▂▂▂▁▁▁▁▁351.0380.0237.0280.0332.0329.0258.0235.0296.0284.0217.0229.0292.0307.0225.0231.0265.0284.0218.0232.0272.0258.0220.0209.0209.0217.0180.0148.0161.0134.0110.086.095.079.053.042.047.042.044.0
  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:Assets ███▇▆▆▆▆▆▆▆▆▆▆▅▅▆▆▆▆▆▅▅▅▅▅▄▄▄▂▁▁▁▁11780.011881.011848.010592.09725.09736.09555.09700.08838.08731.08465.08500.08500.08448.08362.08283.08442.08513.08580.08383.08482.07607.07659.07775.06989.07208.06595.05752.05899.03236.02534.02313.02331.02074.0NA1964.0NANANA
us-gaap:Liabilities ███▇▇▇▇▇▆▆▆▆▅▅▆▅▅▆▆▅▅▄▅▅▄▄▅▄▄▂▁▁▁8825.08878.08853.07877.07488.07504.07291.07437.06792.06677.06320.06276.06125.06161.06236.06145.06143.06177.06242.06013.06014.05050.05098.05143.04837.05002.05254.04272.04285.02163.01503.01302.01340.0NANA1124.0NANANA
us-gaap:LiabilitiesAndStockholdersEquity ███▅▃▃▃▃▁▁11780.011881.011848.010592.09725.09736.09555.09700.08838.08731.0NA8500.08500.08448.08362.08283.08442.08513.08580.08383.08482.07607.07659.07775.06989.07208.06595.05752.05899.03236.02534.02313.02331.0NANA1964.0NANANA
 us-gaap:StockholdersEquity dei:LegalEntity,us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName,us-gaap:CapitalUnitsByClass cwen:ThirdPartyInvestor,cwen:RattlesnakeTEHoldcoLLC,us-gaap:CapitalUnitClassANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:AssetsCurrent █▇▇▆▇▆▅▅▆▄▄▇▅▄▃▄▄▄▄▆▅▂▂▂▃▄▂▅▅▁▄▂▃853.0767.0734.0708.0773.0654.0554.0608.0619.0498.0456.0756.0603.0472.0425.0482.0520.0491.0476.0645.0531.0319.0284.0318.0376.0491.0293.0539.0555.0196.0502.0267.0408.0NANA81.0NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▄▃▃▅▇▄▃▃▃▂▃█▅▃▄▃▄▄▄▆▄▂▂▃▃▆▃▇▇▂█▁▃▁▁▁▁189.0138.0144.0268.0359.0175.0110.0155.0148.093.0117.0407.0232.0130.0173.0148.0179.0181.0213.0317.0200.089.076.0111.0125.0281.0114.0391.0372.087.0420.036.0121.018.023.022.030.0NANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▇▆▅▆▇▅▄▅▄▃▃█▄▂▂▃▃▃▃▆▃▁555.0470.0431.0465.0537.0416.0380.0417.0397.0296.0298.0583.0389.0269.0277.0316.0319.0295.0323.0487.0338.0213.0NA242.0NANANA573.0NANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent ██▆▅▆▆▄▄▅▅▃▄▅▅▃▃▅▄▃▃▄▄▃▃▄▄▂▂▃▂▁▁203.0203.0159.0143.0156.0161.099.0116.0141.0126.091.0104.0141.0132.082.095.0126.0119.082.091.0115.0109.085.095.0104.098.063.067.080.056.038.040.0NANANA22.0NANANA
us-gaap:InventoryNet ▇▇▇▇▇▇▇▆▇█▆▆▆▆▆▆▆▇▆▆▆▆▅▆▅▄▄▃▂▂▂▂▁42.043.043.042.042.041.041.040.043.049.040.040.039.039.039.039.038.041.040.039.037.035.034.035.030.029.027.018.017.014.015.014.09.0NANA5.0NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▄▄█▅▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▃▂▂▂▂▁▁▂▂51.050.0101.058.038.036.033.033.034.026.027.029.031.026.018.019.022.021.019.016.021.022.020.022.025.019.018.019.022.07.04.017.018.0NANA2.0NANANA
  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
 us-gaap:AssetsNoncurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName cwen:DesertSunlightNANANA1244.0NA1271.0NA1296.0NANANA1298.0NANANA1350.0NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AssetsNoncurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName cwen:GenConnNANANA344.0NANANA342.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AssetsNoncurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName cwen:InvestmentsOtherNANANA2201.0NANANA2514.0NANANA2511.0NANANA2621.0NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentGross NANANA9540.0NANANA7943.0NANANA6835.0NANANA6489.0NANANA6411.0NANA5779.05757.04933.04927.04821.03795.03542.02488.01711.01705.01636.01626.0NA1713.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:AssetsLeasedToOthersNANANA7201.06975.06974.07020.06942.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNANANA62.0NANANA94.0NANANA26.0NANANA238.0NANANANANANANANANANANANA7.011.08.06.05.02.0NA930.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandAndLandImprovementsNANANA224.0NANANA173.0NANANA171.0NANANA166.0NANANA171.0NANA151.0151.092.087.087.087.0NANANA45.034.035.0NA30.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:SupportEquipmentAndFacilitiesNANANA9254.0NANANA7676.0NANANA6638.0NANANA6289.0NANANA6215.0NANA5602.05597.04837.04832.04717.03701.0NANANA1654.0NANANA680.0NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ██▇▇▆▆▆▆▆▅▅▅▅▅▄▄▄▄▃▃▃▃▃▃▂▂▂▁▁▁▁▁▁▁2700.02573.02447.02323.02135.02036.01970.01880.01830.01731.01674.01590.01507.01428.01358.01285.01189.01102.01025.0951.01002.0832.0767.0701.0499.0449.0391.0308.0266.0233.0181.0164.0149.0134.0NA115.0NANANA
us-gaap:PropertyPlantAndEquipmentNet ████▆▇▆▆▆▆▅▅▅▅▅▅▅▅▆▆▆▅▅▅▄▄▄▃▃▂▁▁▁▁7438.07537.07490.07217.06165.06256.06001.06063.05562.05602.05355.05245.05306.05376.05340.05204.05247.05322.05390.05460.05711.04947.05012.05056.04434.04478.04430.03487.03276.02255.01530.01541.01487.01492.0NA1598.0NANANA
 us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures dei:LegalEntity cwen:ClearwayEnergyInc.NANANA2612.0NANANA2173.0NANANA2182.0NANANA2029.0NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IntangibleAssetsNetExcludingGoodwill us-gaap:ConsolidatedEntities cwen:DGPVHoldco1And2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet ███▅▅▅▅▅▄▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▆▁▁▁▁2154.02188.02223.01370.01371.01393.01406.01428.01103.01121.01139.01156.01177.01192.01210.01228.01234.01251.01268.01286.01303.01321.01338.01362.01377.01389.01403.01266.01517.0105.085.086.027.0NANA30.0NANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANANA104.0NANANA92.0NANANA57.0NANANA128.0NANANA216.0NANANA170.0NANANA134.0NANANA146.0NANANA-3.0NANANA
us-gaap:OperatingLeaseRightOfUseAsset ███▇▄▄▃▃▁▁346.0349.0348.0337.0256.0257.0221.0223.0191.0183.0NA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▆██▆▄▆▆▆▆▅▇▆▅▄▄▃▃▄▃▂▂▃▃▃▆█▇▅▅▅▁▁▁104.0144.0139.0114.075.0110.0108.0103.0109.0100.0128.0106.092.082.073.063.056.074.066.051.047.066.058.061.0114.0144.0123.099.093.093.032.027.026.0NANA21.0NANANA
  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:AccountsPayableCurrent ▃▃█▅▂▁58.059.093.072.046.041.0NA74.0NA62.055.045.090.040.040.027.027.023.026.023.023.021.026.023.022.023.033.019.0NANANA40.0NANANA166.0NANANA
us-gaap:LiabilitiesCurrent ▃▃▃▃▃▂▆▇██▆▃▄▃▃▂▂▂▂▂▂▂▂▂▂▂▂▁▂▁▁▁▁816.0754.0748.0634.0602.0555.01714.02057.02246.02127.01787.0704.01085.0804.0859.0486.0490.0438.0455.0459.0459.0380.0383.0456.0425.0570.0389.0297.0302.0233.0150.0257.0267.0NANA285.0NANANA
us-gaap:LongTermDebtCurrent ▂▂▂▁▁▁▆▇██▆▂545.0518.0500.0384.0361.0357.01480.01824.01965.01914.01608.0535.0NANANANANANANANANANANA241.0224.0407.0218.0160.0157.0119.071.0133.0147.0126.0NA58.0NANANA
us-gaap:OperatingLeaseLiabilityCurrent NANANA8.07.07.07.07.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent █▄▃▅▆▁▁▄104.064.062.079.089.040.039.071.0NA42.035.057.096.060.058.088.095.060.055.085.094.039.053.068.079.0NANA61.0NANANANANANANANANANANA
  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:LiabilitiesNoncurrent ███▇▇▇▅▅▄▄▄▅▅▅▅▆▆▆▆▅▅▅▅▅▄▄▅▄▄▂▁▁▁8009.08124.08105.07243.06886.06949.05577.05380.04546.04550.04533.05572.05040.05357.05377.05659.05653.05739.05787.05554.05555.04670.04715.04687.04412.04432.04865.03975.03983.01930.01353.01045.01073.0NANA839.0NANANA
us-gaap:LongTermDebt NANANA7043.0NANANA6858.06179.06184.05887.06044.05870.05970.06038.05914.05901.05983.06051.05770.05704.04772.04821.04863.04509.0NANA4069.0NANANA1133.01167.01202.0NA807.0NANANA
us-gaap:LongTermDebtNoncurrent ███▇▇▇▅▅▄▄▄▆▅▆▆▆▆▆▆▆▆▅▅▅▅▅▅▄▄▂▁▁▁7299.07434.07463.06585.06357.06377.05081.04956.04143.04192.04215.05447.04928.05244.05261.05531.05520.05597.05662.05426.05359.04465.04521.04562.04285.04336.04719.03890.03926.01880.01310.01000.01020.0NANA749.0NANANA
us-gaap:LongTermDebtAndCapitalLeaseObligations ███▇▇▇▅▅▄▄▄▆▅▆▆▆▆▆▆▆▆▅▅▅▅▅▅▄▄▂▁▁7299.07434.07463.06585.06357.06377.05081.04956.04143.04192.04225.05447.04928.05244.05261.05531.05520.05597.05662.05426.05359.04465.04521.04562.04285.04336.04719.03890.03926.01880.01310.01000.0NA1076.0NA749.0NANANA
us-gaap:MinorityInterest ███▆▂▃▃▃▂▂▃▃▃▃▃▃▃▃▃▄▄▅▅▅▂▂▁▂▂▂▃▃▃1177.01209.01199.0890.0355.0370.0463.0413.0298.0322.0373.0402.0440.0419.0371.0391.0437.0498.0508.0520.0622.0742.0753.0791.0348.0361.0131.0246.0279.0264.0385.0382.0413.0NANA0.0NANANA
us-gaap:OtherLiabilitiesNoncurrent ████▅▅▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▁▁▁▁▁189.0184.0181.0178.0119.0120.0123.0121.0115.0106.0109.0108.0103.0101.099.097.087.079.079.076.078.063.064.064.053.052.049.039.029.021.023.029.028.0NANA25.0NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ███▇▄▄▂▃▁▁361.0361.0354.0345.0260.0260.0222.0227.0193.0186.0NA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANANA23.018.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANANA23.018.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANANA23.018.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANANA23.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANANA476.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
 us-gaap:StockholdersEquity dei:LegalEntity,us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName,us-gaap:CapitalUnitsByClass cwen:ThirdPartyInvestor,cwen:RattlesnakeTEHoldcoLLC,us-gaap:CapitalUnitClassANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ███▇▆▆▆▆▆▆▆▆▇▆▆▆▆▆▆▇▇▇▇▇▆▆▄▄▅▄▃▃▃▁2955.03003.02995.02715.02237.02232.02264.02263.02046.02054.02145.02224.02375.02287.02126.02138.02299.02336.02338.02370.02468.02557.02561.02632.02152.02206.01341.01480.01614.01073.01031.01011.0991.00.0NA0.0NANANA
us-gaap:CommonStockValue ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄1.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.0NA0.0NANANANANA1e-05NA1e-05NANANA
us-gaap:AdditionalPaidInCapital ▇▇██████▇▇▇██▇▇▇▇▇▇▇▇▇▇▇▇▇▁▁1810.01848.01886.01922.01918.01934.01922.01936.01830.01852.01870.01897.01935.01859.01827.01843.01864.01842.01859.01879.01858.01835.01844.01855.01820.01852.01235.01240.0NANANA621.0NANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▅▄▂▂▅▄▁▃▃▁▂▃▇█▄▃▇▇▆▆██▇▇▇▇▆▆▆▆▆▇▇-25.0-46.0-81.0-84.0-22.0-54.0-101.0-72.0-66.0-105.0-80.0-58.013.025.0-53.0-69.024.023.0-5.0-2.035.026.07.012.015.08.0-2.03.05.03.04.08.09.0NANA30.0NANANA
 us-gaap:RetainedEarningsAccumulatedDeficit dei:LegalEntity cwen:ClearwayEnergyInc.NANANA-84.0NANANA-72.0NANANA-58.0NANANA-69.0NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▇▇▇▆▆▅▅▆▆▆▅▅▆▆▅▄▄▄▄▄▁▁▂▄▃▆▅▇▇▇███-8.0-9.0-10.0-14.0-15.0-19.0-21.0-15.0-17.0-16.0-19.0-18.0-14.0-17.0-20.0-28.0-27.0-28.0-25.0-28.0-48.0-47.0-44.0-27.0-32.0-16.0-23.0-9.0-6.0-9.0-2.00.0-2.0NANA-24.0NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax dei:LegalEntity cwen:ClearwayEnergyInc.NANANA-14.0NANANA-15.0NANANA-18.0NANANA-28.0NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncome█▇▇▅▄▂▁▄▃▄▂▃-8.0-9.0-10.0-14.0-15.0-19.0-21.0-15.0-17.0-16.0-19.0-18.0NA-17.0NA-28.0NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AociAttributableToNoncontrollingInterest█▁▄-8.0-10.0-9.0NA-16.0-20.0-22.0NA-19.0-19.0-21.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:NoncontrollingInterestNANANA-16.0NANANA-16.0-19.0-19.0-21.0-20.0-16.0-19.0-23.0-32.0-36.0-42.0NA-42.0-71.0-42.0NANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest ███▆▂▃▃▃▂▂▃▃▃▃▃▃▃▃▃▄▄▅▅▅▂▂▁▂▂▂▃▃▃1177.01209.01199.0890.0355.0370.0463.0413.0298.0322.0373.0402.0440.0419.0371.0391.0437.0498.0508.0520.0622.0742.0753.0791.0348.0361.0131.0246.0279.0264.0385.0382.0413.0NANA0.0NANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues NANANANA20.028.010.0NANANANANA76.065.010.0NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapitalNANANANA20.028.010.0NANANANANA76.065.010.0NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▄▄1.01.0NANANA1.0NANA1.00.0NANA1.01.0NANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders 11.0NANANA6.03.0NANA4.030.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▆▃▄▇▄▃▄▇▄▃▄▆▄▃▅▆▄▃▄▇▄▄▄▆▂▃▂▄▃▂▂▄▁▂▂288.0194.047.0104.0257.0100.084.0103.0224.089.061.0102.0215.0116.065.0142.0203.0110.061.0121.0241.096.0102.0104.0181.010.078.029.0121.057.016.038.0122.0-29.010.038.0NANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▆▅▇▇█▇▆▇▆▇▇▇▆▇▇▇▇▇▇▆▇▇▆▇▅▄█▁▅█▇▇▆▆▆-10.0-106.0-314.0-42.0-60.057.0-17.0-168.0-89.0-185.0-26.0-10.0-9.0-122.0-44.0-79.0-61.0-80.0-63.0-19.0-100.016.0-58.0-222.0-59.0-348.0-489.053.0-917.0-331.0127.0-95.018.0-129.0-182.0-143.0NANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▂▄▂▂▂▂▃▂▃▁▃▂▃▂▂▂▂▂▃▂▂▂▃▁▅▃▂█▂▄▂▂▃▃▃-193.0-49.0233.0-134.0-76.0-121.0-104.085.0-34.094.0-320.0102.0-86.0-2.0-60.0-77.0-118.0-113.0-107.015.0-30.0-99.0-79.081.0-278.0505.0119.0-63.01081.0-82.0241.0-28.0-37.0153.0173.097.0NANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▆▆▅▄▇▆▅▅▇▅▁█▇85.039.0-34.0-72.0121.036.0-37.020.0101.0-2.0-285.0194.0120.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:DepreciationDepletionAndAmortization ████▆▆▆▇▇▆▅▅▅▅▅▆▆▅▅▅▅▄▄▆▃▄▄▃▃▃▂▂▂▁▁▁▁▁131.0128.0128.0125.0102.099.0102.0111.0112.089.084.084.084.082.081.093.088.078.075.073.075.067.066.0102.050.059.054.042.034.036.017.016.016.09.010.07.06.06.0NA
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▆▆▅▅▅▇▄▃▅▆▄▄▅▇▄▃▆▆▄▄▅▄▅▅▂█▅▄▄▆▆▅▁█▅▃27.027.03.016.03.048.0-22.0-33.011.034.0-7.0-14.08.045.0-9.0-31.021.024.0-8.0-14.011.0-17.013.011.0-61.067.05.0-3.0-16.025.025.02.0-79.073.07.0-27.0NANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities █▆▃▄▇▄▃▄▇▄▃▄▆▄▃▅▆▄▃▄▇▄▄▄▆▂▃▂▄▃▂▂▄▁▂▂288.0194.047.0104.0257.0100.084.0103.0224.089.061.0102.0215.0116.065.0142.0203.0110.061.0121.0241.096.0102.0104.0181.010.078.029.0121.057.016.038.0122.0-29.010.038.0NANANA
us-gaap:NetIncomeLoss ▆▇▄▁▇█▁▃▇▁▂21.035.03.0-25.032.047.0-29.0-6.039.0-24.0-20.0NANANANANANANANANANANANANANANANANA6.06.0NANA9.033.0NANANA-1.0NA
us-gaap:ProfitLoss ▆▆▃▃▆▇▂▃▆▄▃▂▇█▅▂▆▆▅▁▆▇▅▅▆▆▄▅▆▆▆▆▆▆▅▅▅▅▅25.032.0-76.0-73.042.076.0-107.0-48.035.0-36.0-47.0-91.049.096.00.0-98.041.045.0-1.0-126.047.058.02.013.034.041.0-16.0-10.031.034.018.024.040.034.011.05.04.0-1.05.0
  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▆▅▇▇█▇▆▇▆▇▇▇▆▇▇▇▇▇▇▆▇▇▆▇▅▄█▁▅█▇▇▆▆▆-10.0-106.0-314.0-42.0-60.057.0-17.0-168.0-89.0-185.0-26.0-10.0-9.0-122.0-44.0-79.0-61.0-80.0-63.0-19.0-100.016.0-58.0-222.0-59.0-348.0-489.053.0-917.0-331.0127.0-95.018.0-129.0-182.0-143.0NANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▃▃▅▃▃▄▃▃▆▅▃▃▃▃▃▂▂▂▂▂▂▂▂▃▂▂▂▂▂▂▃▂▁▅█▆31.014.079.029.012.043.040.028.0104.080.016.021.017.027.018.08.010.09.04.04.05.04.07.013.08.05.03.05.0-1.010.019.06.0-35.088.0179.0107.0NANANA
 us-gaap:PaymentsToAcquireProductiveAssets cwen:AssetAcquisition cwen:NedPowerMountStormLLCNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PaymentsToAcquireProductiveAssets us-gaap:CounterpartyName,us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName,us-gaap:StatementEquityComponents cwen:CEG,cwen:PinnacleRepoweringPartnershipHoldCoLLC,us-gaap:NoncontrollingInterestNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▂▄▂▂▂▂▃▂▃▁▃▂▃▂▂▂▂▂▃▂▂▂▃▁▅▃▂█▂▄▂▂▃▃▃-193.0-49.0233.0-134.0-76.0-121.0-104.085.0-34.094.0-320.0102.0-86.0-2.0-60.0-77.0-118.0-113.0-107.015.0-30.0-99.0-79.081.0-278.0505.0119.0-63.01081.0-82.0241.0-28.0-37.0153.0173.097.0NANANA
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▂▂█▄▅▃▂▆▂▅▂▅▂▃▂▂▂▂▂▂▅▂▂▃▂▄▃▂▅▂▄▂▁▃▄▂21.012.01004.0309.0489.0255.031.0629.093.0489.04.0600.00.0213.014.00.00.00.041.0125.0550.00.00.0255.014.0365.0210.00.0538.041.0345.00.0-99.0163.0356.068.0NANANA
us-gaap:RepaymentsOfLongTermDebt ▂▁█▄▅▁▄▇▁▃▃▄▁▂▁▁▁▁▁▁▁▁▁▁142.071.0957.0473.0507.0110.0437.0784.084.0312.0304.0425.0100.0206.079.0108.082.067.075.060.082.055.067.055.0NANANANANANANANANANANANANANANA
  2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-06-302012-12-31
Value1000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.0010.010.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding us-gaap:StatementClassOfStock

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:CommonClassA


Weighted
Period End2021-09-302021-06-302020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value35353535353535353535493535494935354949353535
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassC


Weighted
Period End2021-09-302021-06-302020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value82828180757573737369786565757463637373636335
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding234.3234.3231.4228.6214.3214.3208.6208.6208.6197.1159.2185.7185.7153.1151.0180.0180.0149.0149.0180.0180.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic us-gaap:StatementClassOfStock

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:CommonClassC


Weighted
Period End2021-09-302021-06-302020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value828281807573737373696765656463636363636363633535
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Share Outstanding Basic And Diluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted us-gaap:StatementClassOfStock

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted

us-gaap:CommonClassA


Weighted
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-30
Value353535353535353535353535353535353123
Percentage of WeightedAverageNumberOfShareOutstandingBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassC


Weighted
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-30
Value82818180797373656363636335353123
Percentage of WeightedAverageNumberOfShareOutstandingBasicAndDiluted234.3231.4231.4228.6225.7208.6208.6185.7180.0180.0180.0180.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic us-gaap:StatementClassOfStock

us-gaap:EarningsPerShareBasic

us-gaap:CommonClassA


Earnings
Period End2021-09-302021-06-302020-09-302020-06-302019-09-302019-06-302018-09-302018-06-302017-09-302017-06-302016-09-302016-06-302015-09-302015-06-30
Value0.180.30.270.410.36-0.220.20.770.30.290.340.330.180.15
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassC


Earnings
Period End2021-09-302021-06-302020-09-302020-06-302019-09-302019-06-302018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-30
Value0.180.30.270.410.36-0.220.20.770.160.30.29-0.03-0.140.340.330.120.180.15
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.0100.0100.00.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted us-gaap:StatementClassOfStock

us-gaap:EarningsPerShareDiluted

us-gaap:CommonClassA


Earnings
Period End2021-09-302021-06-302020-09-302020-06-302019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value0.180.30.270.410.36-0.22-0.630.20.610.16-0.710.270.26-0.03-0.140.30.290.050.180.15
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassC


Earnings
Period End2021-09-302021-06-302020-09-302020-06-302019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value0.180.30.270.410.36-0.22-0.630.20.70.16-0.710.290.28-0.03-0.140.320.310.050.180.15
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0114.8100.0100.0107.4107.7100.0100.0106.7106.9100.0100.0100.0

Earnings Per Share Basic And Diluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:EarningsPerShareBasicAndDiluted


Earnings
Period End2021-03-312020-03-312019-03-312015-03-312014-12-312014-09-302014-03-312013-12-312013-09-30
Value0.03-0.26-0.18-0.15-0.030.20.180.180.39
Percentage of EarningsPerShareBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarningsPerShareBasicAndDiluted us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Earnings
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-312017-06-302017-03-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value0.03-0.210.270.41-0.26-0.060.37-0.22-0.180.160.29-0.030.330.050.120.180.15-0.07-0.010.10.13
Percentage of EarningsPerShareBasicAndDiluted100.00.00.00.0100.00.00.00.0100.00.00.00.00.00.00.00.00.046.733.350.00.0

us-gaap:CommonClassC


Earnings
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-312017-06-302017-03-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value0.03-0.20.270.41-0.26-0.06-0.36-0.22-0.180.160.29-0.030.330.050.120.180.15-0.07-0.010.10.13
Percentage of EarningsPerShareBasicAndDiluted100.00.00.00.0100.00.00.00.0100.00.00.00.00.00.00.00.00.046.733.350.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value22357.0-24.03649-35.0-4.038-21.0-21.0-72.0248224-71.030250.07.03229-12.0161.016-18.0-2.08.02.0-3.0
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.39.23.0-8.610.814.9-63.6-1.759.4-36.8-38.2-31.438.1141.439.3-30.711.38.80.03.011.811.2-5.57.70.57.4-10.0-1.45.01.5-2.7

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value6.0-3.0-72.0-48.01431-84.0-39.0-4.0-10.0-28.0-27.03121-11.0-24.01714-7.0-84.03013-27.0174.046-15.0-20.030119.0492859
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.7-0.8-30.4-17.14.29.4-152.7-16.6-6.2-17.5-50.9-11.849.236.2-18.0-10.46.44.9-3.2-36.211.05.0-12.38.11.921.2-8.3-13.518.68.28.257.029.574.7

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value2832-65.0-72.05080-119.0-43.034-31.0-49.0-99.05510317-105.048395.0-77.06842-39.0135.062-33.0-22.0382212323760126.01.0
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.08.4-27.4-25.715.124.3-216.4-18.353.1-54.4-89.1-43.287.3177.627.9-45.518.113.72.3-33.225.016.3-17.76.22.428.6-18.3-14.923.616.410.937.238.975.922.614.32.1

Cost Of Revenue

us-gaap:CostOfRevenue

us-gaap:CostOfRevenue


Cost
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value117107110919587939386798485847489877877846876758310169677557524553353332293128
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax33.328.246.432.528.626.4169.139.6134.4138.6152.737.1133.3127.6145.937.729.427.138.529.327.929.137.748.333.030.941.738.532.333.648.240.734.740.554.773.859.6

us-gaap:CostOfRevenue us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Cost
Period End2021-09-302021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.0-1.00.00.00.00.00.00.00.00.0
Percentage of CostOfRevenue0.0-0.90.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.30.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.0

us-gaap:CostOfRevenue us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:ConventionalGeneration


Cost
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value20232723212224171413171812
Percentage of CostOfRevenue17.121.524.525.322.125.325.818.316.316.520.221.214.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.76.111.48.26.36.743.67.221.922.830.97.919.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:ConventionalGeneration0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:Renewables


Cost
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value60545239333936413635333739
Percentage of CostOfRevenue51.350.547.342.934.744.838.744.141.944.339.343.546.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.114.221.913.99.911.965.517.456.261.460.016.261.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Renewables125.098.2-520.00.0173.7216.7514.30.0400.0318.20.00.00.0

us-gaap:OperatingSegments, cwen:Thermal


Cost
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value37313131412633353630333033
Percentage of CostOfRevenue31.629.028.234.143.229.935.537.641.938.039.335.339.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.58.213.111.112.37.960.014.956.252.660.013.152.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Thermal68.562.063.30.068.361.968.80.065.565.266.00.062.3

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value262247251252209199206229206197176175192163176230170162164331155145152207123130132102918372535044413936
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax74.665.0105.990.063.060.5374.597.4321.9345.6320.076.4304.8281.0288.599.664.257.075.2142.757.056.269.199.058.959.973.368.956.561.965.561.652.655.777.492.976.6

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


Gains
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-30
Value0.00.0-42.0-15.0-6.00.0-3.0-15.00.0-1.00.0-7.00.00.00.0-1.00.00.0-2.00.00.00.00.0-2.0-7.00.00.00.0
Percentage of GainsLossesOnExtinguishmentOfDebt0.00.0100.0100.0100.00.0100.0100.00.0100.00.0100.00.00.00.0100.00.00.0100.00.00.00.00.0100.0100.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-17.7-5.4-1.80.0-5.5-6.40.0-1.80.0-3.10.00.00.0-0.40.00.0-0.90.00.00.00.0-1.0-3.20.00.00.0

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Gains
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.00.0-41.00.00.00.0-3.0-15.00.00.0
Percentage of GainsLossesOnExtinguishmentOfDebt0.00.097.6-0.0-0.00.0100.0100.00.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-17.30.00.00.0-5.5-6.40.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.0

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:Renewables


Gains
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.00.0-1.0-15.0-6.00.00.00.00.0-1.0
Percentage of GainsLossesOnExtinguishmentOfDebt0.00.02.4100.0100.00.0-0.0-0.00.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.4-5.4-1.80.00.00.00.0-1.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Renewables0.00.010.00.0-31.60.00.00.00.0-9.1

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument

cwen:A5.75SeniorNotesdue2025


Gains
Period End2021-09-30
Value0.0
Percentage of GainsLossesOnExtinguishmentOfDebt0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cwen:A5.75SeniorNotesdue20250.0

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value10.010.010.04.09.0129.09.07.07.06.03.06.06.05.05.04.06.04.06.04.03.03.03.03.03.03.01.03.02.02.02.01.02.02.0
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.82.64.21.42.73.616.43.810.912.310.91.39.510.38.22.21.52.11.82.61.51.21.41.41.41.41.70.71.91.51.82.31.12.53.8

us-gaap:GeneralAndAdministrativeExpense us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


General
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value9.09.09.06.08.09.08.08.05.07.05.02.06.0
Percentage of GeneralAndAdministrativeExpense90.090.090.0150.088.975.088.988.971.4100.083.366.7100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.62.43.82.12.42.714.53.47.812.39.10.99.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GeneralAndAdministrativeExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:Renewables


General
Period End2021-09-302021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.01.00.01.00.00.01.00.00.00.00.0
Percentage of GeneralAndAdministrativeExpense0.010.00.08.30.00.014.30.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.30.00.30.00.01.60.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Renewables0.01.80.05.60.00.011.10.00.00.00.0

us-gaap:OperatingSegments, cwen:Thermal


General
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.00.01.0-1.01.02.01.01.01.00.01.01.00.0
Percentage of GeneralAndAdministrativeExpense10.00.010.0-25.011.116.711.111.114.30.016.733.30.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.00.4-0.40.30.61.80.41.60.01.80.40.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Thermal1.90.02.00.01.74.82.10.01.80.02.00.00.0

us-gaap:GeneralAndAdministrativeExpense us-gaap:RelatedPartyTransactionsByRelatedParty

cwen:CEG


General
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1.01.01.00.00.60.60.6
Percentage of GeneralAndAdministrativeExpense10.010.010.00.06.75.06.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.30.40.00.20.21.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cwen:CEG0.00.00.00.00.00.00.0

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value2639-96.0-78.051102-129.0-42.024-32.0-54.0-46.060103-1.0-51.04953-2.0-152.060702.00.04245-20.0-21.0413621274534115.012-2.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.410.3-40.5-27.915.431.0-234.5-17.937.5-56.1-98.2-20.195.2177.6-1.6-22.118.518.7-0.9-65.522.127.10.90.020.120.7-11.1-14.225.526.919.131.447.443.020.811.925.5-4.8

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Income
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-36.0-34.0-77.0-37.0-32.016-35.0-46.0-28.0-29.0-27.0-34.0-44.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-138.5-87.280.247.4-62.715.727.1109.5-116.790.650.073.9-73.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-10.3-8.9-32.5-13.2-9.64.9-63.6-19.6-43.8-50.9-49.1-14.8-69.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:ConventionalGeneration


Income
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value52403343483118384132242839
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest200.0102.6-34.4-55.194.130.4-14.0-90.5170.8-100.0-44.4-60.965.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.810.513.915.414.59.432.716.264.156.143.612.261.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:ConventionalGeneration0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:Renewables


Income
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value6.027-56.0-83.03454-114.0-34.06.0-20.0-56.0-45.055
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest23.169.258.3106.466.752.988.481.025.062.5103.797.891.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.77.1-23.6-29.610.216.4-207.3-14.59.4-35.1-101.8-19.787.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Renewables12.549.1560.00.0178.9300.0-1628.60.066.7-181.80.00.00.0

us-gaap:OperatingSegments, cwen:Thermal


Income
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value4.06.04.0-1.01.01.02.00.05.0-15.05.05.010.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest15.415.4-4.21.32.01.0-1.6-0.020.846.9-9.3-10.916.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.61.7-0.40.30.33.60.07.8-26.39.12.215.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Thermal7.412.08.20.01.72.44.20.09.1-32.610.00.018.9

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value1.07.0-20.0-5.09.026-22.06.0-11.04.0-7.045117.0-1.0578.08.0-1.0-26.013120.04.08.04.0-4.0-11.010.02.03.03.05.00.00.00.08.0
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.31.8-8.4-1.82.77.9-40.02.6-17.27.0-12.719.717.512.1-1.624.73.02.8-0.5-11.24.84.70.01.93.81.8-2.2-7.46.21.52.73.55.30.00.00.017.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Income
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.07.0-20.0-5.09.026-22.06.0-11.04.0-7.04511
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.31.8-8.4-1.82.77.9-40.02.6-17.27.0-12.719.717.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value8410345708593167671061301011067471556975867661716268626244706941291911136.05.03.05.0
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.927.119.025.025.628.3303.628.5165.6228.1183.646.3117.5122.490.229.928.330.334.926.326.124.030.929.729.720.338.946.625.521.617.312.813.77.69.47.110.6

us-gaap:InterestExpense us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Interest
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value24252526232423222321222521
Percentage of InterestExpense28.624.355.637.127.125.813.832.821.716.221.823.628.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.86.610.59.36.97.341.89.435.936.840.010.933.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:ConventionalGeneration


Interest
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value14161115172230141316161813
Percentage of InterestExpense16.715.524.421.420.023.718.020.912.312.315.817.017.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.04.24.65.45.16.754.56.020.328.129.17.920.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:ConventionalGeneration0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:Renewables


Interest
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value41584.0263942109266589595936
Percentage of InterestExpense48.856.38.937.145.945.265.338.861.368.558.455.748.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.715.31.79.311.712.8198.211.1101.6156.1107.325.857.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Renewables85.4105.5-40.00.0205.3233.31557.10.0722.2809.10.00.00.0

us-gaap:OperatingSegments, cwen:Thermal


Interest
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value5.04.05.03.06.05.05.05.05.04.04.04.04.0
Percentage of InterestExpense6.03.911.14.37.15.43.07.54.73.14.03.85.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.12.11.11.81.59.12.17.87.07.31.76.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Thermal9.38.010.20.010.011.910.40.09.18.78.00.07.5

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312014-09-302014-06-302013-09-302013-06-302012-06-30
Value21353.0-25.03247-29.0-6.039-24.0-20.06.06.09.033-1.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.09.21.3-8.99.614.3-52.7-2.660.9-42.1-36.43.74.59.541.8-2.4

us-gaap:NetIncomeLoss us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Net
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value6.010.01.09.014-9.012-8.0-6.0
Percentage of NetIncomeLoss28.628.633.328.129.831.030.833.330.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.72.60.42.74.3-16.418.8-14.0-10.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CommonClassA0.00.00.00.00.00.00.00.00.0

us-gaap:CommonClassC


Net
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value15252.02233-20.027-16.0-14.0
Percentage of NetIncomeLoss71.471.466.768.870.269.069.266.770.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.36.60.86.610.0-36.442.2-28.1-25.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CommonClassC0.00.00.00.00.00.00.00.00.0

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value4.0-3.0-79.0-48.010.029-78.0-42.0-4.0-12.0-27.0-23.02817-20.0-28.01117-10.0-113.08.026-3.05.01731-11.06.02519
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.1-0.8-33.3-17.13.08.8-141.8-17.9-6.2-21.1-49.1-10.044.429.3-32.8-12.14.26.0-4.6-48.72.910.1-1.42.48.114.3-6.14.115.514.2

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest dei:LegalEntity, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

cwen:RepoweringPartnershipIILLC, cwen:ElbowCreekTEHoldco


Net
Period End2020-09-302020-06-302020-03-31
Value-1.0-6.0-2.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest-10.0-20.72.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-1.8-3.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cwen:RepoweringPartnershipIILLC cwen:ElbowCreekTEHoldco0.00.00.0

cwen:RepoweringPartnershipIILLC, cwen:WildoradoTEHoldco


Net
Period End2020-09-302020-06-302020-03-31
Value0.0-8.0-28.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest0.0-27.635.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-2.4-50.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cwen:RepoweringPartnershipIILLC cwen:WildoradoTEHoldco0.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-25.03247-29.0-6.039-24.0-20.0-68.0217916-70.02928-3.0-13.033325.0111710.0-5.00.06.06.04.04.09.0
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-8.99.614.3-52.7-2.660.9-42.1-36.4-29.733.3136.226.2-30.310.99.9-1.4-5.612.112.42.35.38.14.6-2.80.03.74.53.64.79.5

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted us-gaap:StatementClassOfStock

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:CommonClassA


Net
Period End2020-09-302019-09-302019-06-302018-09-302018-06-302017-09-302017-06-302016-09-302016-06-302015-09-302015-06-30
Value9.012-8.07.030131315146.05.0
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.718.8-14.011.151.74.94.65.55.42.92.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CommonClassA0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonClassC


Net
Period End2020-09-302019-09-302019-06-302018-09-302018-06-302017-09-302017-06-302016-09-302016-06-302015-09-302015-06-30
Value2227-16.0145521212423115.0
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted244.4225.0200.0200.0183.3161.5161.5160.0164.3183.3100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.642.2-28.122.294.87.97.48.88.95.32.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CommonClassC0.00.00.00.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value-63.0-94.0-82.0-106.0-72.0-28.0-181.0-48.0-66.0-119.0-95.0-100.0-40.0-41.0-50.0-63.0-46.0-69.0-56.0-53.0-57.0-43.0-66.0-56.0-44.0-42.0-68.0-67.0-29.0-15.0-17.0-6.00.0-3.0-1.02.01.0
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-17.9-24.7-34.6-37.9-21.7-8.5-329.1-20.4-103.1-208.8-172.7-43.7-63.5-70.7-82.0-27.3-17.4-24.3-25.7-22.8-21.0-16.7-30.0-26.8-21.1-19.4-37.8-45.3-18.0-11.2-15.5-7.00.0-3.8-1.94.82.1

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value89133-14.028123130526.09087415410014449199512254-99.0117113686686874846705138334538123.0118.09.0
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.435.0-5.910.037.039.594.52.6140.6152.674.523.6158.7248.380.38.235.843.024.8-42.743.043.830.931.641.140.126.731.143.538.134.538.447.448.122.67.123.419.020.5

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Operating
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-12.0-9.0-11.0-11.0-9.0-9.0-9.0-9.0-5.0-8.0-6.0-3.0-24.0
Percentage of OperatingIncomeLoss-13.5-6.878.6-39.3-7.3-6.9-17.3-150.0-5.6-9.2-14.6-5.6-24.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.4-2.4-4.6-3.9-2.7-2.7-16.4-3.8-7.8-14.0-10.9-1.3-38.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:ConventionalGeneration


Operating
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value64554156615246495146374349
Percentage of OperatingIncomeLoss71.941.4-292.9200.049.640.088.5816.756.752.990.279.649.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.214.517.320.018.415.883.620.979.780.767.318.877.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:ConventionalGeneration0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:Renewables


Operating
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2978-53.0-19.063819.0-39.034601.06.061
Percentage of OperatingIncomeLoss32.658.6378.6-67.951.262.317.3-650.037.869.02.411.161.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.320.5-22.4-6.819.024.616.4-16.653.1105.31.82.696.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Renewables60.4141.8530.00.0331.6450.0128.60.0377.8545.50.00.00.0

us-gaap:OperatingSegments, cwen:Thermal


Operating
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value8.09.09.02.08.06.06.05.010.0-11.09.08.014
Percentage of OperatingIncomeLoss9.06.8-64.37.16.54.611.583.311.1-12.622.014.814.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.43.80.72.41.810.92.115.6-19.316.43.522.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Thermal14.818.018.40.013.314.312.50.018.2-23.918.00.026.4

us-gaap:OperatingIncomeLoss us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

cwen:DGPVHoldco3


Operating
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.04.02.06.04.01.0
Percentage of OperatingIncomeLoss0.03.13.86.74.62.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.01.23.69.47.01.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cwen:DGPVHoldco30.00.00.00.00.00.0

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax


Other
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.00.0118.04.0-12.05.0-1.05.0-2.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax100.00.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.90.04.62.41.2-21.82.1-1.68.8-3.6

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value3.00.0118.04.0-12.05.0-1.05.0-2.0-8.06.07.0173.07.0-6.06.04921-16.0-41.017-29.021-17.0-12.07.0-12.0-6.08.0-3.0251.01.0-3.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.90.04.62.41.2-21.82.1-1.68.8-3.6-3.59.512.127.91.32.6-2.12.821.17.7-6.2-18.68.1-13.99.7-9.4-8.14.3-9.0-5.59.3-3.231.61.92.4-6.4

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-06-30
Value0.0-2.09.0-2.06.03.0-14.04.01.0-9.05.0
Percentage of OtherComprehensiveIncomeLossNetOfTax0.00.081.80.075.075.0116.780.0-100.0-180.071.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.53.8-0.71.80.9-25.51.71.6-15.88.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value1000000.01000000.01000000.02000000.0002000000.03000000.02000000.01000000.03000000.04000000.02000000.01000000.01000000.01000000.01000000.01000000.01000000.001000000.01000000.0001000000.001000000.01000000.01000000.001000000.01000000.01000000.01000000.001000000.00
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.0100.00.0100.0100.0100.00.0100.0100.0100.0100.00.0100.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.30.40.70.00.03.61.33.11.85.51.73.21.71.60.40.40.40.50.00.40.40.00.00.50.00.60.70.60.00.91.21.11.30.02.40.0

us-gaap:OtherNonoperatingIncomeExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:ConventionalGeneration


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-1000000.01000000.001000000.0001000000.0001000000.000
Percentage of OtherNonoperatingIncomeExpense-100.0100.00.00.00.00.033.30.00.033.30.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.30.40.00.30.00.00.40.00.01.80.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:ConventionalGeneration0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:Renewables


Other
Period End2021-09-302021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value01000000.02000000.0001000000.02000000.02000000.01000000.01000000.02000000.01000000.0
Percentage of OtherNonoperatingIncomeExpense0.0100.0100.00.00.050.066.7100.0100.033.350.050.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.30.70.00.01.80.93.11.81.80.91.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Renewables0.01.80.00.00.014.30.022.29.10.00.00.0

us-gaap:OperatingSegments, cwen:Thermal


Other
Period End2021-09-302021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1000000.01000000.0-1000000.001000000.000001000000.00
Percentage of OtherNonoperatingIncomeExpense100.0100.00.00.050.00.00.00.00.025.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.3-0.30.01.80.00.00.00.00.40.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Thermal1.92.0-1.70.02.10.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value2532-76.0-73.04276-107.0-48.035-36.0-47.0-91.049960.0-98.04145-1.0-126.047582.0133441-16.0-10.0313418244034115.04.0-1.05.0
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.18.4-32.1-26.112.723.1-194.5-20.454.7-63.2-85.5-39.777.8165.50.0-42.415.515.8-0.5-54.317.322.50.96.216.318.9-8.9-6.819.325.416.427.942.143.020.811.98.5-2.411.4

us-gaap:ProfitLoss us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Profit
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-37.0-41.0-57.0-32.0-41.0-10.0-13.0-52.0-17.0-33.0-20.0-79.0-55.0
Percentage of ProfitLoss-148.0-128.175.043.8-97.6-13.212.1108.3-48.691.742.686.8-112.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-10.5-10.8-24.1-11.4-12.3-3.0-23.6-22.1-26.6-57.9-36.4-34.5-87.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:ConventionalGeneration


Profit
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value52403343483118384132242839
Percentage of ProfitLoss208.0125.0-43.4-58.9114.340.8-16.8-79.2117.1-88.9-51.1-30.879.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.810.513.915.414.59.432.716.264.156.143.612.261.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:ConventionalGeneration0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:Renewables


Profit
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value6.027-56.0-83.03454-114.0-34.06.0-20.0-56.0-45.055
Percentage of ProfitLoss24.084.473.7113.781.071.1106.570.817.155.6119.149.5112.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.77.1-23.6-29.610.216.4-207.3-14.59.4-35.1-101.8-19.787.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Renewables12.549.1560.00.0178.9300.0-1628.60.066.7-181.80.00.00.0

us-gaap:OperatingSegments, cwen:Thermal


Profit
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value4.06.04.0-1.01.01.02.00.05.0-15.05.05.010.0
Percentage of ProfitLoss16.018.8-5.31.42.41.3-1.9-0.014.341.7-10.6-5.520.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.61.7-0.40.30.33.60.07.8-26.39.12.215.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Thermal7.412.08.20.01.72.44.20.09.1-32.610.00.018.9

us-gaap:ProfitLoss us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

cwen:DGPVHoldco3


Profit
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.04.0-16.0169.01.0
Percentage of ProfitLoss0.05.315.045.7-25.0-2.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.01.2-29.125.015.81.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cwen:DGPVHoldco30.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value3.0-4.0-81.010.029-78.0-4.0-12.0-27.02817-20.0
Percentage of ProfitLoss12.0-12.5106.623.838.272.9-11.433.357.457.117.70.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.9-1.1-34.23.08.8-141.8-6.2-21.1-49.144.429.3-32.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value21353.0143247-29.039-24.0-20.0217916
Percentage of ProfitLoss84.0109.4-3.9-19.276.261.827.1111.466.742.642.982.30.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.09.21.35.09.614.3-52.760.9-42.1-36.433.3136.226.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value351380237280332329552356457552296358612312652842182322722582202092092171801481611341108695795342474244
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Revenue
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value1021053971796055566457
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax29.127.616.525.423.818.2100.023.8100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax29.127.616.525.423.818.2100.023.8100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:Renewables


Revenue
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value4855-10.02719187.06.09.011
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.714.5-4.29.65.75.512.72.614.119.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.714.5-4.29.65.75.512.72.614.119.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Renewables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, cwen:Thermal


Revenue
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value54504944604248505546504853
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.413.220.715.718.112.887.321.385.980.790.921.084.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.413.220.715.718.112.887.321.385.980.790.921.084.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Thermal100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value3513802372803323292582352962842172292923072252312652842182322722582202092092171801481611341108695795342474244
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0469.1100.0462.5498.2394.5100.0463.5529.3368.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Revenuesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value351380237280332329258235296284217
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0469.1100.0462.5498.2394.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments344.1361.9607.7394.4420.3548.3469.1419.6462.5498.20.0

us-gaap:Revenues us-gaap:ConsolidationItems, us-gaap:ProductOrService

us-gaap:OperatingSegments, cwen:CapacityRevenue


Revenuesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1331281201261431241211081039992
Percentage of Revenues37.933.750.645.043.137.746.946.034.834.942.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.933.750.645.043.137.7220.046.0160.9173.7167.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:CapacityRevenue0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:EnergyRevenue


Revenuesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value267292156151196218155134202193141
Percentage of Revenues76.176.865.853.959.066.360.157.068.268.065.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax76.176.865.853.959.066.3281.857.0315.6338.6256.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:EnergyRevenue0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:ProductsAndServicesOther


Revenuesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2428171715129.012119.08.0
Percentage of Revenues6.87.47.26.14.53.63.55.13.73.23.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.87.47.26.14.53.616.45.117.215.814.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:ProductsAndServicesOther0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:CapacityRevenue, cwen:ConventionalGeneration


Revenuesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value12011310711311911210795898579
Percentage of Revenues34.229.745.140.435.834.041.540.430.129.936.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.229.745.140.435.834.0194.540.4139.1149.1143.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:CapacityRevenue cwen:ConventionalGeneration0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:CapacityRevenue, cwen:Renewables


Revenuesus-gaap:
Period End2021-09-302020-06-302020-03-312019-06-302019-03-31
Value1.00.00.00.00.0
Percentage of Revenues0.30.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:CapacityRevenue cwen:Renewables0.00.00.00.00.0

us-gaap:OperatingSegments, cwen:CapacityRevenue, cwen:Thermal


Revenuesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1215131324121413141413
Percentage of Revenues3.43.95.54.67.23.65.45.54.74.96.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.43.95.54.67.23.625.55.521.924.623.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:CapacityRevenue cwen:Thermal0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:EnergyRevenue, cwen:ConventionalGeneration


Revenuesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.02.01.04.03.01.02.01.02.01.01.0
Percentage of Revenues0.90.50.41.40.90.30.80.40.70.40.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.90.50.41.40.90.33.60.43.11.81.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:EnergyRevenue cwen:ConventionalGeneration0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:EnergyRevenue, cwen:Renewables


Revenuesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value231261126123166195125104167166108
Percentage of Revenues65.868.753.243.950.059.348.444.356.458.549.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.868.753.243.950.059.3227.344.3260.9291.2196.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:EnergyRevenue cwen:Renewables0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:EnergyRevenue, cwen:Thermal


Revenuesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3329292427222829332632
Percentage of Revenues9.47.612.28.68.16.710.912.311.19.214.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.47.612.28.68.16.750.912.351.645.658.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:EnergyRevenue cwen:Thermal0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:ProductsAndServicesOther, cwen:Renewables


Revenuesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value14229.09.06.04.02.04.02.02.02.0
Percentage of Revenues4.05.83.83.21.81.20.81.70.70.70.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.05.83.83.21.81.23.61.73.13.53.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:ProductsAndServicesOther cwen:Renewables0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:ProductsAndServicesOther, cwen:Thermal


Revenuesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value10.06.08.08.09.08.07.08.09.07.06.0
Percentage of Revenues2.81.63.42.92.72.42.73.43.02.52.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.81.63.42.92.72.412.73.414.112.310.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:ProductsAndServicesOther cwen:Thermal0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:ConventionalGeneration


Revenuesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value118109102111116107103939084798687
Percentage of Revenues33.628.743.039.634.932.539.939.630.429.636.437.629.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax33.628.743.039.634.932.5187.339.6140.6147.4143.637.6138.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:ConventionalGeneration0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:Renewables


Revenuesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value17922286125157180107931511538899152
Percentage of Revenues51.058.436.344.647.354.741.539.651.053.940.643.252.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax51.058.436.344.647.354.7194.539.6235.9268.4160.043.2241.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Renewables372.9403.6-860.0463.0826.31000.01528.61550.01677.81390.90.00.00.0

us-gaap:OperatingSegments, cwen:Thermal


Revenuesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value54494944594248495547504753
Percentage of Revenues15.412.920.715.717.812.818.620.918.616.523.020.518.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.412.920.715.717.812.887.320.985.982.590.920.584.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Thermal100.098.0100.0100.098.3100.0100.098.0100.0102.2100.097.9100.0

us-gaap:Revenues us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

cwen:DGPVHoldco3


Revenuesus-gaap:
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.07.07.09.08.04.0
Percentage of Revenues0.02.12.73.02.81.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.02.112.714.114.07.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cwen:DGPVHoldco30.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value117801188111848105929725973695559700883887318465850085008448836282838442851385808383848276077659777569897208659557525899323625342313233120741964
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets dei:LegalEntity

cwen:ClearwayEnergyInc.


Assetsdei:
Period End2020-12-312019-12-312018-12-312017-12-31
Value2720231424982777
Percentage of Assets25.723.929.433.5
Percentage of Assets25.723.929.433.5
Percentage of Assets cwen:ClearwayEnergyInc.100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

cwen:AltaTEHoldco


Assetsus-gaap:
Period End2020-12-31
Value637
Percentage of Assets6.0
Percentage of Assets6.0
Percentage of Assets cwen:AltaTEHoldco100.0

cwen:AltaXandXITEHoldco


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-31
Value609621632649661667
Percentage of Assets5.25.25.36.76.87.0
Percentage of Assets5.25.25.36.76.87.0
Percentage of Assets cwen:AltaXandXITEHoldco100.0100.0100.0100.0100.0100.0

cwen:BuckthornRenewablesLLC


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value208210211212212214214
Percentage of Assets1.81.81.82.02.22.22.2
Percentage of Assets1.81.81.82.02.22.22.2
Percentage of Assets cwen:BuckthornRenewablesLLC100.0100.0100.0100.0100.0100.0100.0

cwen:DGPVFunds


Assetsus-gaap:
Period End2020-12-31
Value885
Percentage of Assets8.4
Percentage of Assets8.4
Percentage of Assets cwen:DGPVFunds100.0

cwen:DGPVHoldco1And2


Assetsus-gaap:
Period End2020-11-02
Value424
Percentage of Assets0.0
Percentage of Assets0.0
Percentage of Assets cwen:DGPVHoldco1And2100.0

cwen:DGPVHoldco3


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-05-29
Value713723725391394400
Percentage of Assets6.16.16.14.04.00.0
Percentage of Assets6.16.16.14.04.00.0
Percentage of Assets cwen:DGPVHoldco3100.0100.0100.0100.0100.0100.0

cwen:ElbowCreekTEHoldco


Assetsus-gaap:
Period End2020-09-302020-06-30
Value113115
Percentage of Assets1.21.2
Percentage of Assets1.21.2
Percentage of Assets cwen:ElbowCreekTEHoldco100.0100.0

cwen:KawailoaSolarPartnershipLLC


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value178180158162166167168
Percentage of Assets1.51.51.31.51.71.71.8
Percentage of Assets1.51.51.31.51.71.71.8
Percentage of Assets cwen:KawailoaSolarPartnershipLLC100.0100.0100.0100.0100.0100.0100.0

cwen:LangfordTEPartnershipLLC


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-31
Value152152154155
Percentage of Assets1.31.31.31.5
Percentage of Assets1.31.31.31.5
Percentage of Assets cwen:LangfordTEPartnershipLLC100.0100.0100.0100.0

cwen:LighthouseRenewableHoldcoLLC


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-31
Value474478481492
Percentage of Assets4.04.04.14.6
Percentage of Assets4.04.04.14.6
Percentage of Assets cwen:LighthouseRenewableHoldcoLLC100.0100.0100.0100.0

cwen:MesquiteStar


Assetsus-gaap:
Period End2020-12-21
Value496
Percentage of Assets0.0
Percentage of Assets0.0
Percentage of Assets cwen:MesquiteStar100.0

cwen:OahuSolarPartnership


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value222225199202207209212
Percentage of Assets1.91.91.71.92.12.12.2
Percentage of Assets1.91.91.71.92.12.12.2
Percentage of Assets cwen:OahuSolarPartnership100.0100.0100.0100.0100.0100.0100.0

cwen:OtherConsolidatedVariableInterestEntities


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value191195202206131313
Percentage of Assets1.61.61.71.90.10.10.1
Percentage of Assets1.61.61.71.90.10.10.1
Percentage of Assets cwen:OtherConsolidatedVariableInterestEntities100.0100.0100.0100.0100.0100.0100.0

cwen:PinnacleRepoweringPartnershipHoldCoLLC


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-31
Value136131121
Percentage of Assets1.21.11.0
Percentage of Assets1.21.11.0
Percentage of Assets cwen:PinnacleRepoweringPartnershipHoldCoLLC100.0100.0100.0

cwen:RattlesnakeTEHoldcoLLC


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-31
Value224227254
Percentage of Assets1.91.92.1
Percentage of Assets1.91.92.1
Percentage of Assets cwen:RattlesnakeTEHoldcoLLC100.0100.0100.0

cwen:RosieTargetCoLLC


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-31
Value282282288298
Percentage of Assets2.42.42.42.8
Percentage of Assets2.42.42.42.8
Percentage of Assets cwen:RosieTargetCoLLC100.0100.0100.0100.0

cwen:SpringCanyon


Assetsus-gaap:
Period End2020-09-302020-06-302020-03-31
Value858788
Percentage of Assets0.90.90.9
Percentage of Assets0.90.90.9
Percentage of Assets cwen:SpringCanyon100.0100.0100.0

cwen:WildoradoTEHoldco


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-30
Value251253255254260268
Percentage of Assets2.12.12.22.42.72.8
Percentage of Assets2.12.12.22.42.72.8
Percentage of Assets cwen:WildoradoTEHoldco100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value162143166233273159137128110360
Percentage of Assets1.41.21.42.22.81.61.41.31.24.2
Percentage of Assets1.41.21.42.22.81.61.41.31.24.2
Percentage of Assets us-gaap:CorporateNonSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:ConventionalGeneration


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value2473250025162575261526742677275317661788
Percentage of Assets21.021.021.224.326.927.528.028.420.021.0
Percentage of Assets21.021.021.224.326.927.528.028.420.021.0
Percentage of Assets us-gaap:OperatingSegments cwen:ConventionalGeneration100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, cwen:Renewables


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value8522861785367157621062906116618663305836
Percentage of Assets72.372.572.067.663.964.664.063.871.668.7
Percentage of Assets72.372.572.067.663.964.664.063.871.668.7
Percentage of Assets us-gaap:OperatingSegments cwen:Renewables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, cwen:Thermal


Assetsus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value623621630627627613625633632516
Percentage of Assets5.35.25.35.96.46.36.56.57.26.1
Percentage of Assets5.35.25.35.96.46.36.56.57.26.1
Percentage of Assets us-gaap:OperatingSegments cwen:Thermal100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value8825887888537877748875047291743767926677632062766125616162366145614361776242601360145050509851434837500252544272428521631503130213401124
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets74.974.774.774.477.077.176.376.776.876.574.773.872.172.974.674.272.872.672.871.770.966.466.666.169.269.479.774.372.666.859.356.357.557.2

us-gaap:Liabilities dei:LegalEntity

cwen:ClearwayEnergyInc.


Liabilitiesdei:
Period End2020-12-312019-12-312018-12-312017-12-31
Value5.051274618
Percentage of Liabilities0.10.74.410.1
Percentage of Assets0.00.53.27.5
Percentage of Assets cwen:ClearwayEnergyInc.0.22.211.022.3

us-gaap:Liabilities us-gaap:ConsolidatedEntities

cwen:AltaTEHoldco


Liabilitiesus-gaap:
Period End2020-12-31
Value44
Percentage of Liabilities0.6
Percentage of Assets0.4
Percentage of Assets cwen:AltaTEHoldco6.9

cwen:AltaXandXITEHoldco


Liabilitiesus-gaap:
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-31
Value403843444444
Percentage of Liabilities0.50.40.50.60.60.6
Percentage of Assets0.30.30.40.50.50.5
Percentage of Assets cwen:AltaXandXITEHoldco6.66.16.86.86.76.6

cwen:BuckthornRenewablesLLC


Liabilitiesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value10.010.09.09.07.07.08.0
Percentage of Liabilities0.10.10.10.10.10.10.1
Percentage of Assets0.10.10.10.10.10.10.1
Percentage of Assets cwen:BuckthornRenewablesLLC4.84.84.34.23.33.33.7

cwen:DGPVFunds


Liabilitiesus-gaap:
Period End2020-12-31
Value77
Percentage of Liabilities1.0
Percentage of Assets0.7
Percentage of Assets cwen:DGPVFunds8.7

cwen:DGPVHoldco1And2


Liabilitiesus-gaap:
Period End2020-11-02
Value214
Percentage of Liabilities0.0
Percentage of Assets0.0
Percentage of Assets cwen:DGPVHoldco1And250.5

cwen:DGPVHoldco3


Liabilitiesus-gaap:
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-05-29
Value777776276281290
Percentage of Liabilities0.90.90.93.73.70.0
Percentage of Assets0.70.60.62.82.90.0
Percentage of Assets cwen:DGPVHoldco310.810.710.570.671.372.5

cwen:ElbowCreekTEHoldco


Liabilitiesus-gaap:
Period End2020-09-302020-06-30
Value2726
Percentage of Liabilities0.40.3
Percentage of Assets0.30.3
Percentage of Assets cwen:ElbowCreekTEHoldco23.922.6

cwen:KawailoaSolarPartnershipLLC


Liabilitiesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value105106102111116117117
Percentage of Liabilities1.21.21.21.41.51.61.6
Percentage of Assets0.90.90.91.01.21.21.2
Percentage of Assets cwen:KawailoaSolarPartnershipLLC59.058.964.668.569.970.169.6

cwen:LangfordTEPartnershipLLC


Liabilitiesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-31
Value18171818
Percentage of Liabilities0.20.20.20.2
Percentage of Assets0.20.10.20.2
Percentage of Assets cwen:LangfordTEPartnershipLLC11.811.211.711.6

cwen:LighthouseRenewableHoldcoLLC


Liabilitiesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-31
Value13612611282
Percentage of Liabilities1.51.41.31.0
Percentage of Assets1.21.10.90.8
Percentage of Assets cwen:LighthouseRenewableHoldcoLLC28.726.423.316.7

cwen:MesquiteStar


Liabilitiesus-gaap:
Period End2020-12-21
Value87
Percentage of Liabilities0.0
Percentage of Assets0.0
Percentage of Assets cwen:MesquiteStar17.5

cwen:OahuSolarPartnership


Liabilitiesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value115117114122125127129
Percentage of Liabilities1.31.31.31.51.71.71.8
Percentage of Assets1.01.01.01.21.31.31.4
Percentage of Assets cwen:OahuSolarPartnership51.852.057.360.460.460.860.8

cwen:OtherConsolidatedVariableInterestEntities


Liabilitiesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value474438333.03.03.0
Percentage of Liabilities0.50.50.40.40.00.00.0
Percentage of Assets0.40.40.30.30.00.00.0
Percentage of Assets cwen:OtherConsolidatedVariableInterestEntities24.622.618.816.023.123.123.1

cwen:PinnacleRepoweringPartnershipHoldCoLLC


Liabilitiesus-gaap:
Period End2021-09-302021-06-302021-03-31
Value11910281
Percentage of Liabilities1.31.10.9
Percentage of Assets1.00.90.7
Percentage of Assets cwen:PinnacleRepoweringPartnershipHoldCoLLC87.577.966.9

cwen:RattlesnakeTEHoldcoLLC


Liabilitiesus-gaap:
Period End2021-09-302021-06-302021-03-31
Value222132
Percentage of Liabilities0.20.20.4
Percentage of Assets0.20.20.3
Percentage of Assets cwen:RattlesnakeTEHoldcoLLC9.89.312.6

cwen:RosieTargetCoLLC


Liabilitiesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-31
Value101101103118
Percentage of Liabilities1.11.11.21.5
Percentage of Assets0.90.90.91.1
Percentage of Assets cwen:RosieTargetCoLLC35.835.835.839.6

cwen:SpringCanyon


Liabilitiesus-gaap:
Period End2020-09-302020-06-302020-03-31
Value5.06.05.0
Percentage of Liabilities0.10.10.1
Percentage of Assets0.10.10.1
Percentage of Assets cwen:SpringCanyon5.96.95.7

cwen:WildoradoTEHoldco


Liabilitiesus-gaap:
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-30
Value191811111212
Percentage of Liabilities0.20.20.10.10.20.2
Percentage of Assets0.20.20.10.10.10.1
Percentage of Assets cwen:WildoradoTEHoldco7.67.14.34.34.64.5

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value1178011881118481059297259736955597008838873185008500844883628283844285138580838384827607765977756989720865955752589932362534231323311964
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity dei:LegalEntity

cwen:ClearwayEnergyInc.


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value2720231424982777
Percentage of LiabilitiesAndStockholdersEquity25.723.929.433.5
Percentage of Assets25.723.929.433.5
Percentage of Assets cwen:ClearwayEnergyInc.100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity dei:LegalEntity, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:CapitalUnitsByClass

us-gaap:StockholdersEquity

cwen:ThirdPartyInvestor, cwen:RattlesnakeTEHoldcoLLC, us-gaap:CapitalUnitClassA


Stockholders
Period End2021-01-12
Value107
Percentage of StockholdersEquity100.0
Percentage of Assets0.0
Percentage of Assets cwen:ThirdPartyInvestor cwen:RattlesnakeTEHoldcoLLC us-gaap:CapitalUnitClassA0.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value85376773470877365455460861949845675660347242548252049147664553131928431837649129353955519650226740881
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.26.56.26.77.96.75.86.37.05.75.48.97.15.65.15.86.25.85.57.76.34.23.74.15.46.84.49.49.46.119.811.517.54.1

us-gaap:AssetsCurrent us-gaap:ConsolidatedEntities

cwen:DGPVHoldco1And2


Assets
Period End2020-11-02
Value29
Percentage of AssetsCurrent0.0
Percentage of Assets0.0
Percentage of Assets cwen:DGPVHoldco1And26.8

cwen:MesquiteStar


Assets
Period End2020-12-21
Value22
Percentage of AssetsCurrent0.0
Percentage of Assets0.0
Percentage of Assets cwen:MesquiteStar4.4

us-gaap:AssetsCurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

cwen:DesertSunlight


Assets
Period End2020-12-312020-06-302019-12-312018-12-312017-12-31
Value132261209133133
Percentage of AssetsCurrent18.639.934.417.627.6
Percentage of Assets1.22.72.21.61.6
Percentage of Assets cwen:DesertSunlight0.00.00.00.00.0

cwen:GenConn


Assets
Period End2020-12-312019-12-31
Value4037
Percentage of AssetsCurrent5.66.1
Percentage of Assets0.40.4
Percentage of Assets cwen:GenConn0.00.0

cwen:InvestmentsOther


Assets
Period End2020-12-312019-12-312018-12-312017-12-31
Value177195148139
Percentage of AssetsCurrent25.032.119.628.8
Percentage of Assets1.72.01.71.7
Percentage of Assets cwen:InvestmentsOther0.00.00.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312010-12-31
Value1891381442683591751101551489311740723213017314817918121331720089761111252811143913728742036121182322302430
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.21.22.53.71.81.21.61.71.11.44.82.71.52.11.82.12.12.53.82.41.21.01.41.83.91.76.86.32.716.61.65.20.90.01.10.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-31
Value555470431465537416380417397296298583389269277316319295323487338213242573
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.74.03.64.45.54.34.04.34.53.43.56.94.63.23.33.83.83.53.85.84.02.83.110.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value20320315914315616199116141126911041411328295126119829111510985951049863678056384022
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.71.71.31.41.61.71.01.21.61.41.11.21.71.61.01.11.51.41.01.11.41.41.11.21.51.41.01.21.41.71.51.71.1

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value42434342424141404349404039393939384140393735343530292718171415149.05.0
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.40.40.40.40.40.50.60.50.50.50.50.50.50.50.50.50.50.40.50.40.50.40.40.40.30.30.40.60.60.40.3

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value515010158383633333426272931261819222119162122202225191819227.04.017182.0
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.90.50.40.40.30.30.40.30.30.30.40.30.20.20.30.20.20.20.20.30.30.30.40.30.30.30.40.20.20.70.80.1

Assets Noncurrent

us-gaap:AssetsNoncurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:AssetsNoncurrent

cwen:DesertSunlight


Assets
Period End2020-12-312020-06-302019-12-312018-12-312017-12-31
Value12441271129612981350
Percentage of AssetsNoncurrent100.0100.0100.0100.0100.0
Percentage of Assets11.713.113.415.316.3
Percentage of Assets cwen:DesertSunlight0.00.00.00.00.0

cwen:GenConn


Assets
Period End2020-12-312019-12-31
Value344342
Percentage of AssetsNoncurrent27.726.4
Percentage of Assets3.23.5
Percentage of Assets cwen:GenConn0.00.0

cwen:InvestmentsOther


Assets
Period End2020-12-312019-12-312018-12-312017-12-31
Value2201251425112621
Percentage of AssetsNoncurrent176.9194.0193.5194.1
Percentage of Assets20.825.929.531.6
Percentage of Assets cwen:InvestmentsOther0.00.00.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value954079436835648964115779575749334927482137953542248817111705163616261713
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets90.181.980.478.376.575.574.070.668.473.166.060.076.967.573.770.278.487.2

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AssetsLeasedToOthers


Property
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value72016975697470206942
Percentage of PropertyPlantAndEquipmentGross75.50.00.00.087.4
Percentage of Assets68.071.771.673.571.6
Percentage of Assets us-gaap:AssetsLeasedToOthers0.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2020-12-312019-12-312018-12-312017-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value6294262387.0118.06.05.02.0930
Percentage of PropertyPlantAndEquipmentGross0.61.20.43.70.20.40.50.40.30.154.3
Percentage of Assets0.61.00.32.90.10.30.30.30.20.147.4
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LandAndLandImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312013-09-302013-06-302012-12-31
Value2241731711661711511519287878745343530
Percentage of PropertyPlantAndEquipmentGross2.32.22.52.62.72.62.61.91.81.82.32.62.12.21.8
Percentage of Assets2.11.82.02.02.02.01.91.31.21.31.51.91.51.71.5
Percentage of Assets us-gaap:LandAndLandImprovements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SupportEquipmentAndFacilities


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value925476766638628962155602559748374832471737011654680
Percentage of PropertyPlantAndEquipmentGross97.096.697.196.996.996.997.298.198.197.897.597.039.7
Percentage of Assets87.479.178.175.974.173.172.069.267.071.564.371.534.6
Percentage of Assets us-gaap:SupportEquipmentAndFacilities0.00.00.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value27002573244723232135203619701880183017311674159015071428135812851189110210259511002832767701499449391308266233181164149134115
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.921.720.721.922.020.920.619.420.719.819.818.717.716.916.215.514.112.911.911.311.810.910.09.07.16.25.95.44.57.27.17.16.46.55.9

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AssetsLeasedToOthers


Accumulated
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-31
Value1964185417691732164915091435
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment84.586.886.987.987.787.285.7
Percentage of Assets18.519.118.218.117.017.317.0
Percentage of Assets us-gaap:AssetsLeasedToOthers0.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value74387537749072176165625660016063556256025355524553065376534052045247532253905460571149475012505644344478443034873276225515301541148714921598
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets63.163.463.268.163.464.362.862.562.964.263.361.762.463.663.962.862.262.562.865.167.365.065.465.063.462.167.260.655.569.760.466.663.871.981.4

us-gaap:PropertyPlantAndEquipmentNet us-gaap:ConsolidatedEntities

cwen:AltaTEHoldco


Property
Period End2020-12-31
Value356
Percentage of PropertyPlantAndEquipmentNet4.9
Percentage of Assets3.4
Percentage of Assets cwen:AltaTEHoldco55.9

cwen:AltaXandXITEHoldco


Property
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-31
Value338344351363369376
Percentage of PropertyPlantAndEquipmentNet4.54.64.75.95.96.3
Percentage of Assets2.92.93.03.73.83.9
Percentage of Assets cwen:AltaXandXITEHoldco55.555.455.555.955.856.4

cwen:BuckthornRenewablesLLC


Property
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value204206208210209211213
Percentage of PropertyPlantAndEquipmentNet2.72.72.82.93.43.43.5
Percentage of Assets1.71.71.82.02.12.22.2
Percentage of Assets cwen:BuckthornRenewablesLLC98.198.198.699.198.698.699.5

cwen:DGPVFunds


Property
Period End2020-12-31
Value778
Percentage of PropertyPlantAndEquipmentNet10.8
Percentage of Assets7.3
Percentage of Assets cwen:DGPVFunds87.9

cwen:DGPVHoldco1And2


Property
Period End2020-11-02
Value324
Percentage of PropertyPlantAndEquipmentNet0.0
Percentage of Assets0.0
Percentage of Assets cwen:DGPVHoldco1And276.4

cwen:DGPVHoldco3


Property
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-05-29
Value602611621329330330
Percentage of PropertyPlantAndEquipmentNet8.18.18.35.35.30.0
Percentage of Assets5.15.15.23.43.40.0
Percentage of Assets cwen:DGPVHoldco384.484.585.784.183.882.5

cwen:ElbowCreekTEHoldco


Property
Period End2020-09-302020-06-30
Value102104
Percentage of PropertyPlantAndEquipmentNet1.71.7
Percentage of Assets1.01.1
Percentage of Assets cwen:ElbowCreekTEHoldco90.390.4

cwen:KawailoaSolarPartnershipLLC


Property
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value137138118141142144145
Percentage of PropertyPlantAndEquipmentNet1.81.81.62.02.32.32.4
Percentage of Assets1.21.21.01.31.51.51.5
Percentage of Assets cwen:KawailoaSolarPartnershipLLC77.076.774.787.085.586.286.3

cwen:LangfordTEPartnershipLLC


Property
Period End2021-09-302021-06-302021-03-312020-12-31
Value133135137138
Percentage of PropertyPlantAndEquipmentNet1.81.81.81.9
Percentage of Assets1.11.11.21.3
Percentage of Assets cwen:LangfordTEPartnershipLLC87.588.889.089.0

cwen:LighthouseRenewableHoldcoLLC


Property
Period End2021-09-302021-06-302021-03-312020-12-31
Value432437442444
Percentage of PropertyPlantAndEquipmentNet5.85.85.96.2
Percentage of Assets3.73.73.74.2
Percentage of Assets cwen:LighthouseRenewableHoldcoLLC91.191.491.990.2

cwen:MesquiteStar


Property
Period End2020-12-21
Value443
Percentage of PropertyPlantAndEquipmentNet0.0
Percentage of Assets0.0
Percentage of Assets cwen:MesquiteStar89.3

cwen:OahuSolarPartnership


Property
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value174175150179182183185
Percentage of PropertyPlantAndEquipmentNet2.32.32.02.53.02.93.1
Percentage of Assets1.51.51.31.71.91.91.9
Percentage of Assets cwen:OahuSolarPartnership78.477.875.488.687.987.687.3

cwen:OtherConsolidatedVariableInterestEntities


Property
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1751781811848.08.08.0
Percentage of PropertyPlantAndEquipmentNet2.42.42.42.50.10.10.1
Percentage of Assets1.51.51.51.70.10.10.1
Percentage of Assets cwen:OtherConsolidatedVariableInterestEntities91.691.389.689.361.561.561.5

cwen:PinnacleRepoweringPartnershipHoldCoLLC


Property
Period End2021-09-302021-06-302021-03-31
Value10610091
Percentage of PropertyPlantAndEquipmentNet1.41.31.2
Percentage of Assets0.90.80.8
Percentage of Assets cwen:PinnacleRepoweringPartnershipHoldCoLLC77.976.375.2

cwen:RattlesnakeTEHoldcoLLC


Property
Period End2021-09-302021-06-302021-03-31
Value194196211
Percentage of PropertyPlantAndEquipmentNet2.62.62.8
Percentage of Assets1.61.61.8
Percentage of Assets cwen:RattlesnakeTEHoldcoLLC86.686.383.1

cwen:RosieTargetCoLLC


Property
Period End2021-09-302021-06-302021-03-312020-12-31
Value253255256258
Percentage of PropertyPlantAndEquipmentNet3.43.43.43.6
Percentage of Assets2.12.12.22.4
Percentage of Assets cwen:RosieTargetCoLLC89.790.488.986.6

cwen:SpringCanyon


Property
Period End2020-09-302020-06-302020-03-31
Value828485
Percentage of PropertyPlantAndEquipmentNet1.31.31.4
Percentage of Assets0.80.90.9
Percentage of Assets cwen:SpringCanyon96.596.696.6

cwen:WildoradoTEHoldco


Property
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-30
Value229232236240244249
Percentage of PropertyPlantAndEquipmentNet3.13.13.23.34.04.0
Percentage of Assets1.92.02.02.32.52.6
Percentage of Assets cwen:WildoradoTEHoldco91.291.792.594.593.892.9

us-gaap:PropertyPlantAndEquipmentNet us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AssetsLeasedToOthers


Property
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-31
Value5237512152055288529345554638
Percentage of PropertyPlantAndEquipmentNet72.683.183.288.187.381.386.6
Percentage of Assets49.452.753.555.354.652.254.8
Percentage of Assets us-gaap:AssetsLeasedToOthers0.00.00.00.00.00.00.0

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures dei:LegalEntity

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

cwen:ClearwayEnergyInc.


Investments
Period End2020-12-312019-12-312018-12-312017-12-31
Value2612217321822029
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0
Percentage of Assets24.722.425.724.5
Percentage of Assets cwen:ClearwayEnergyInc.96.093.987.373.1

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill us-gaap:ConsolidatedEntities

us-gaap:IntangibleAssetsNetExcludingGoodwill

cwen:DGPVHoldco1And2


Intangible
Period End2020-11-02
Value19
Percentage of IntangibleAssetsNetExcludingGoodwill100.0
Percentage of Assets0.0
Percentage of Assets cwen:DGPVHoldco1And24.5

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value2154218822231370137113931406142811031121113911561177119212101228123412511268128613031321133813621377138914031266151710585862730
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets18.318.418.812.914.114.314.714.712.512.813.513.613.814.114.514.814.614.714.815.315.417.417.517.519.719.321.322.025.73.23.43.71.21.5

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:ConsolidatedEntities

cwen:AltaTEHoldco


Finite
Period End2020-12-31
Value225
Percentage of FiniteLivedIntangibleAssetsNet16.4
Percentage of Assets2.1
Percentage of Assets cwen:AltaTEHoldco35.3

cwen:AltaXandXITEHoldco


Finite
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-31
Value215218221228231234
Percentage of FiniteLivedIntangibleAssetsNet10.010.09.916.616.616.6
Percentage of Assets1.81.81.92.32.42.4
Percentage of Assets cwen:AltaXandXITEHoldco35.335.135.035.134.935.1

cwen:DGPVFunds


Finite
Period End2020-12-31
Value2.0
Percentage of FiniteLivedIntangibleAssetsNet0.1
Percentage of Assets0.0
Percentage of Assets cwen:DGPVFunds0.2

cwen:DGPVHoldco3


Finite
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-05-29
Value1616161.01.01.0
Percentage of FiniteLivedIntangibleAssetsNet0.70.70.70.10.10.0
Percentage of Assets0.10.10.10.00.00.0
Percentage of Assets cwen:DGPVHoldco32.22.22.20.30.30.2

cwen:OtherConsolidatedVariableInterestEntities


Finite
Period End2021-09-302021-06-302021-03-312020-12-312020-06-302020-03-31
Value1.01.01.01.00.00.0
Percentage of FiniteLivedIntangibleAssetsNet0.00.00.00.10.00.0
Percentage of Assets0.00.00.00.00.00.0
Percentage of Assets cwen:OtherConsolidatedVariableInterestEntities0.50.50.50.50.00.0

cwen:PinnacleRepoweringPartnershipHoldCoLLC


Finite
Period End2021-09-302021-06-302021-03-31
Value191920
Percentage of FiniteLivedIntangibleAssetsNet0.90.90.9
Percentage of Assets0.20.20.2
Percentage of Assets cwen:PinnacleRepoweringPartnershipHoldCoLLC14.014.516.5

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

cwen:EmissionAllowances


Finite
Period End2020-12-312019-12-312018-12-312017-12-31
Value14157.06.0
Percentage of FiniteLivedIntangibleAssetsNet1.01.10.60.5
Percentage of Assets0.10.20.10.1
Percentage of Assets cwen:EmissionAllowances0.00.00.00.0

cwen:LeaseholdRights


Finite
Period End2020-12-312019-12-312018-12-312017-12-31
Value60646873
Percentage of FiniteLivedIntangibleAssetsNet4.44.55.95.9
Percentage of Assets0.60.70.80.9
Percentage of Assets cwen:LeaseholdRights0.00.00.00.0

cwen:PPAs


Finite
Period End2020-12-312019-12-31
Value12301283
Percentage of FiniteLivedIntangibleAssetsNet89.889.8
Percentage of Assets11.613.2
Percentage of Assets cwen:PPAs0.00.0

us-gaap:CustomerContracts


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value4.05.06.07.08.09.010.01112
Percentage of FiniteLivedIntangibleAssetsNet0.30.40.50.60.60.70.812.840.0
Percentage of Assets0.00.10.10.10.10.10.20.50.6
Percentage of Assets us-gaap:CustomerContracts0.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value55575961626364657.0
Percentage of FiniteLivedIntangibleAssetsNet4.04.05.15.04.84.65.175.623.3
Percentage of Assets0.50.60.70.70.70.81.12.80.4
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.0

us-gaap:OtherIntangibleAssets


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value7.04.05.04.04.04.03.03.03.0
Percentage of FiniteLivedIntangibleAssetsNet0.50.30.40.30.30.30.23.510.0
Percentage of Assets0.10.00.10.00.00.10.10.10.2
Percentage of Assets us-gaap:OtherIntangibleAssets0.00.00.00.00.00.00.00.00.0

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value1049257128216170134146-3.0
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.00.90.71.52.62.22.36.3-0.2

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-01-012018-12-31
Value3463493483372562572212231911831680.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets2.92.92.93.22.62.62.32.32.22.10.00.0

us-gaap:OperatingLeaseRightOfUseAsset dei:LegalEntity

cwen:OahuSolarPartnership


Operating
Period End2020-12-312020-09-302020-06-302019-12-31
Value18181819
Percentage of OperatingLeaseRightOfUseAsset5.37.07.08.5
Percentage of Assets0.20.20.20.2
Percentage of Assets cwen:OahuSolarPartnership0.00.00.08.8

cwen:RosamondCentral


Operating
Period End2020-12-31
Value11
Percentage of OperatingLeaseRightOfUseAsset3.3
Percentage of Assets0.1
Percentage of Assets cwen:RosamondCentral0.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value1041441391147511010810310910012810692827363567466514766586111414412399939332272621
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.91.21.21.10.81.11.11.11.21.11.51.21.11.00.90.80.70.90.80.60.60.90.80.81.62.01.91.71.62.91.31.21.11.1

us-gaap:OtherAssetsNoncurrent us-gaap:ConsolidatedEntities

cwen:DGPVHoldco1And2


Other
Period End2020-11-02
Value52
Percentage of OtherAssetsNoncurrent0.0
Percentage of Assets0.0
Percentage of Assets cwen:DGPVHoldco1And212.3

cwen:MesquiteStar


Other
Period End2020-12-21
Value31
Percentage of OtherAssetsNoncurrent0.0
Percentage of Assets0.0
Percentage of Assets cwen:MesquiteStar6.2

Other Assets

us-gaap:OtherAssets

us-gaap:OtherAssets


Other
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value348935773624266727872826300030292631265424992591260025972597267527002714227822402341236324012179223918721726505285
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets29.630.130.625.228.729.031.431.230.131.429.430.530.831.131.431.731.731.627.226.430.830.930.931.231.128.430.021.814.5

us-gaap:OtherAssets us-gaap:ConsolidatedEntities

cwen:AltaTEHoldco


Other
Period End2020-12-31
Value56
Percentage of OtherAssets2.1
Percentage of Assets0.5
Percentage of Assets cwen:AltaTEHoldco8.8

cwen:AltaXandXITEHoldco


Other
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-31
Value565960586157
Percentage of OtherAssets1.61.61.72.12.21.9
Percentage of Assets0.50.50.50.60.60.6
Percentage of Assets cwen:AltaXandXITEHoldco9.29.59.58.99.28.5

cwen:BuckthornRenewablesLLC


Other
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value4.04.03.02.03.03.01.0
Percentage of OtherAssets0.10.10.10.10.10.10.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets cwen:BuckthornRenewablesLLC1.91.91.40.91.41.40.5

cwen:DGPVFunds


Other
Period End2020-12-31
Value105
Percentage of OtherAssets3.9
Percentage of Assets1.0
Percentage of Assets cwen:DGPVFunds11.9

cwen:DGPVHoldco3


Other
Period End2021-09-302021-06-302021-03-312020-09-302020-06-30
Value9596886163
Percentage of OtherAssets2.72.72.42.22.2
Percentage of Assets0.80.80.70.60.6
Percentage of Assets cwen:DGPVHoldco313.313.312.115.616.0

cwen:KawailoaSolarPartnershipLLC


Other
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value41424021242323
Percentage of OtherAssets1.21.21.10.80.90.80.8
Percentage of Assets0.30.40.30.20.20.20.2
Percentage of Assets cwen:KawailoaSolarPartnershipLLC23.023.325.313.014.513.813.7

cwen:LangfordTEPartnershipLLC


Other
Period End2021-09-302021-06-302021-03-312020-12-31
Value17151515
Percentage of OtherAssets0.50.40.40.6
Percentage of Assets0.10.10.10.1
Percentage of Assets cwen:LangfordTEPartnershipLLC11.29.99.79.7

cwen:LighthouseRenewableHoldcoLLC


Other
Period End2021-09-302021-06-302021-03-312020-12-31
Value42413948
Percentage of OtherAssets1.21.11.11.8
Percentage of Assets0.40.30.30.5
Percentage of Assets cwen:LighthouseRenewableHoldcoLLC8.98.68.19.8

cwen:OahuSolarPartnership


Other
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value48504923252627
Percentage of OtherAssets1.41.41.40.90.90.90.9
Percentage of Assets0.40.40.40.20.30.30.3
Percentage of Assets cwen:OahuSolarPartnership21.622.224.611.412.112.412.7

cwen:OtherConsolidatedVariableInterestEntities


Other
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value151620215.05.05.0
Percentage of OtherAssets0.40.40.60.80.20.20.2
Percentage of Assets0.10.10.20.20.10.10.1
Percentage of Assets cwen:OtherConsolidatedVariableInterestEntities7.98.29.910.238.538.538.5

cwen:PinnacleRepoweringPartnershipHoldCoLLC


Other
Period End2021-09-302021-06-302021-03-31
Value111210.0
Percentage of OtherAssets0.30.30.3
Percentage of Assets0.10.10.1
Percentage of Assets cwen:PinnacleRepoweringPartnershipHoldCoLLC8.19.28.3

cwen:RattlesnakeTEHoldcoLLC


Other
Period End2021-09-302021-06-302021-03-31
Value303143
Percentage of OtherAssets0.90.91.2
Percentage of Assets0.30.30.4
Percentage of Assets cwen:RattlesnakeTEHoldcoLLC13.413.716.9

cwen:RosieTargetCoLLC


Other
Period End2021-09-302021-06-302021-03-312020-12-31
Value29273240
Percentage of OtherAssets0.80.80.91.5
Percentage of Assets0.20.20.30.4
Percentage of Assets cwen:RosieTargetCoLLC10.39.611.113.4

cwen:WildoradoTEHoldco


Other
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-30
Value222119141619
Percentage of OtherAssets0.60.60.50.50.60.7
Percentage of Assets0.20.20.20.10.20.2
Percentage of Assets cwen:WildoradoTEHoldco8.88.37.55.56.27.1

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value585993724641746255459040402727232623232126232223331940166
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.80.70.50.40.80.70.60.51.10.50.50.30.30.30.30.30.30.30.30.30.30.30.50.31.78.5

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value816754748634602555171420572246212717877041085804859486490438455459459380383456425570389297302233150257267285
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.96.36.36.06.25.717.921.225.424.421.18.312.89.510.35.95.85.15.35.55.45.05.05.96.17.95.95.25.17.25.911.111.514.5

us-gaap:LiabilitiesCurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

cwen:DesertSunlight


Liabilities
Period End2020-12-312020-06-302019-12-312018-12-312017-12-31
Value715455455864
Percentage of LiabilitiesCurrent11.298.226.58.213.2
Percentage of Assets0.75.65.60.70.8
Percentage of Assets cwen:DesertSunlight0.00.00.00.00.0

cwen:GenConn


Liabilities
Period End2020-12-312019-12-31
Value1716
Percentage of LiabilitiesCurrent2.70.8
Percentage of Assets0.20.2
Percentage of Assets cwen:GenConn0.00.0

cwen:InvestmentsOther


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value1147675860
Percentage of LiabilitiesCurrent18.037.38.212.3
Percentage of Assets1.17.90.70.7
Percentage of Assets cwen:InvestmentsOther0.00.00.00.0

Long Term Debt Current

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


Long
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value545518500384361357148018241965191416085352412244072181601571197113314712658
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.64.44.23.63.73.715.518.822.221.919.06.33.13.25.63.32.82.73.72.85.86.36.13.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value8000000.07000000.07000000.07000000.07000000.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.1

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value104646279894039714235579660588895605585943953687961
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.50.50.70.90.40.40.70.50.40.71.10.70.71.11.10.70.61.01.10.50.70.91.11.1

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:LiabilitiesNoncurrent


Liabilities
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value800981248105724368866949557753804546455045335572504053575377565956535739578755545555467047154687441244324865397539831930135310451073839
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets68.068.468.468.470.871.458.455.551.452.153.565.659.363.464.368.367.067.467.466.365.561.461.660.363.161.573.869.167.559.653.445.246.042.7

us-gaap:LiabilitiesNoncurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

cwen:DesertSunlight


Liabilities
Period End2020-12-312020-06-302019-12-312018-12-312017-12-31
Value9214824849621003
Percentage of LiabilitiesNoncurrent12.76.99.017.317.7
Percentage of Assets8.75.05.011.312.1
Percentage of Assets cwen:DesertSunlight0.00.00.00.00.0

cwen:GenConn


Liabilities
Period End2020-12-312019-12-31
Value185176
Percentage of LiabilitiesNoncurrent2.63.3
Percentage of Assets1.71.8
Percentage of Assets cwen:GenConn0.00.0

cwen:InvestmentsOther


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value70089889932
Percentage of LiabilitiesNoncurrent9.71.716.016.5
Percentage of Assets6.60.910.511.3
Percentage of Assets cwen:InvestmentsOther0.00.00.00.0

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312013-12-312013-09-302013-06-302012-12-31
Value70436858617961845887604458705970603859145901598360515770570447724821486345094069113311671202807
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets66.570.769.970.869.571.169.170.772.271.469.970.370.568.867.262.762.962.564.570.749.050.158.041.1

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value729974347463658563576377508149564143419242155447492852445261553155205597566254265359446545214562428543364719389039261880131010001020749
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets62.062.663.062.265.465.553.251.146.948.049.864.158.062.162.966.865.465.766.064.763.258.759.058.761.360.271.667.666.658.151.743.243.838.1

Long Term Debt And Capital Lease Obligations

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:LongTermDebtAndCapitalLeaseObligations


Long
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-06-302012-12-31
Value729974347463658563576377508149564143419242255447492852445261553155205597566254265359446545214562428543364719389039261880131010001076749
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets62.062.663.062.265.465.553.251.146.948.049.964.158.062.162.966.865.465.766.064.763.258.759.058.761.360.271.667.666.658.151.743.251.938.1

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value1177120911998903553704634132983223734024404193713914374985085206227427537913483611312462792643853824130.0
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets10.010.210.18.43.73.84.84.33.43.74.44.75.25.04.44.75.25.85.96.27.39.89.810.25.05.02.04.34.78.215.216.517.70.0

us-gaap:MinorityInterest dei:LegalEntity

cwen:ClearwayEnergyInc.


Minority
Period End2020-12-312019-12-312018-12-312017-12-31
Value890413402412
Percentage of MinorityInterest100.0100.0100.0105.4
Percentage of Assets8.44.34.75.0
Percentage of Assets cwen:ClearwayEnergyInc.32.717.816.114.8

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value1891841811781191201231211151061091081031019997877979767863646453524939292123292825
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.51.51.71.21.21.31.21.31.21.31.31.21.21.21.21.00.90.90.90.90.80.80.80.80.70.70.70.50.60.91.31.21.3

us-gaap:OtherLiabilitiesNoncurrent dei:LegalEntity

cwen:ClearwayEnergyInc.


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value5.06.05.06.0
Percentage of OtherLiabilitiesNoncurrent2.85.04.66.2
Percentage of Assets0.00.10.10.1
Percentage of Assets cwen:ClearwayEnergyInc.0.20.30.20.2

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value3613613543452602602222271931860.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets3.13.03.03.32.72.72.32.32.22.10.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-312020-09-30
Value2318
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0
Percentage of Assets0.20.2

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-312020-09-30
Value2318
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0
Percentage of Assets0.20.2

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-312020-09-30
Value2318
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0
Percentage of Assets0.20.2

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value23
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.2

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value476
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets4.5

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-01-01
Value353267267229234199191174
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.32.72.72.42.42.32.20.0

us-gaap:OperatingLeaseLiability dei:LegalEntity

cwen:OahuSolarPartnership


Operating
Period End2020-12-312020-09-302020-06-302019-12-31
Value20202021
Percentage of OperatingLeaseLiability5.77.57.59.0
Percentage of Assets0.20.20.20.2
Percentage of Assets cwen:OahuSolarPartnership0.00.00.09.8

cwen:RosamondCentral


Operating
Period End2020-12-31
Value12
Percentage of OperatingLeaseLiability3.4
Percentage of Assets0.1
Percentage of Assets cwen:RosamondCentral0.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-312020-09-30
Value591409
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0
Percentage of Assets5.64.2

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-312020-09-30
Value238142
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0
Percentage of Assets2.21.5

Stockholders Equity

us-gaap:StockholdersEquity dei:LegalEntity, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:CapitalUnitsByClass

us-gaap:StockholdersEquity

cwen:ThirdPartyInvestor, cwen:RattlesnakeTEHoldcoLLC, us-gaap:CapitalUnitClassA


Stockholders
Period End2021-01-12
Value107
Percentage of StockholdersEquity100.0
Percentage of Assets0.0
Percentage of Assets cwen:ThirdPartyInvestor cwen:RattlesnakeTEHoldcoLLC us-gaap:CapitalUnitClassA0.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-07-222013-06-302012-12-312011-12-312010-12-31
Value295530032995271522372232226422632046205421452224237522872126213822992336233823702468255725612632215222061341148016141073103110119917880.00.0561193
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0
Percentage of Assets25.125.325.325.623.022.923.723.323.223.525.326.227.927.125.425.827.227.427.228.329.133.633.433.930.830.620.325.727.433.240.743.742.50.00.00.00.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest dei:LegalEntity

cwen:ClearwayEnergyInc.


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value2715226322242159
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0101.0
Percentage of Assets25.623.326.226.1
Percentage of Assets cwen:ClearwayEnergyInc.99.897.889.077.7

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-30.0-31.0-38.0-60.0-70.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-1.1-1.4-1.7-2.8-3.0
Percentage of Assets-0.3-0.3-0.4-0.7-0.8
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312013-07-222012-12-312011-12-312010-12-31
Value-8.0-9.0-10.0-14.0-15.0-19.0-21.0-15.0-17.0-16.0-19.0-18.0-14.0-17.0-20.0-28.0-28.0-27.0-9.00.00.00.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.3-0.3-0.3-0.5-0.7-0.9-0.9-0.7-0.8-0.8-0.9-0.8-0.6-0.7-0.9-1.3-1.2-1.0-0.60.00.00.00.00.0
Percentage of Assets-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.20.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312013-07-222012-12-312011-12-312010-12-31
Value18101848188619221918193419221936183018521870189719351859182718431879185512406210.08400.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest61.361.563.070.885.786.684.985.689.490.287.285.381.581.385.986.279.370.583.861.40.00.00.00.0
Percentage of Assets15.415.615.918.119.719.920.120.020.721.222.122.322.822.021.822.322.423.921.626.80.042.80.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AociIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-16.0-19.0-19.0-30.0-31.0-39.0-43.0-31.0-36.0-35.0-40.0-38.0-30.0-36.0-43.0-60.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.5-0.6-0.6-1.1-1.4-1.7-1.9-1.4-1.8-1.7-1.9-1.7-1.3-1.6-2.0-2.8
Percentage of Assets-0.1-0.2-0.2-0.3-0.3-0.4-0.5-0.3-0.4-0.4-0.5-0.4-0.4-0.4-0.5-0.7
Percentage of Assets us-gaap:AociIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312013-07-222012-12-312011-12-312010-12-31
Value1.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.00.00.00.00.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312013-07-222012-12-312011-12-312010-12-31
Value1177120911998903553704634132983223734024404193713915207912463820.00.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest39.840.340.032.815.916.620.518.314.615.717.418.118.518.317.518.321.930.116.637.80.00.00.00.0
Percentage of Assets10.010.210.18.43.73.84.84.33.43.74.44.75.25.04.44.76.210.24.316.50.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312013-07-222012-12-312011-12-31
Value-25.0-46.0-81.0-84.0-22.0-54.0-101.0-72.0-66.0-105.0-80.0-58.01326-53.0-69.0-2.0123.00.00.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.8-1.5-2.7-3.1-1.0-2.4-4.5-3.2-3.2-5.1-3.7-2.60.51.1-2.5-3.2-0.10.50.20.00.00.00.0
Percentage of Assets-0.2-0.4-0.7-0.8-0.2-0.6-1.1-0.7-0.7-1.2-0.9-0.70.20.3-0.6-0.8-0.00.20.10.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-06-302012-12-31
Value1000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.0010.010.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value1810184818861922191819341922193618301852187018971935185918271843186418421859187918581835184418551820185212351240621
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.415.615.918.119.719.920.120.020.721.222.122.322.822.021.822.322.121.621.722.421.924.124.123.926.025.718.721.626.8

us-gaap:AdditionalPaidInCapital dei:LegalEntity

cwen:ClearwayEnergyInc.


Additional
Period End2020-12-312019-12-312018-12-312017-12-31
Value1922193618971843
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0
Percentage of Assets18.120.022.322.3
Percentage of Assets cwen:ClearwayEnergyInc.70.783.775.966.4

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value-25.0-46.0-81.0-84.0-22.0-54.0-101.0-72.0-66.0-105.0-80.0-58.01325-53.0-69.02423-5.0-2.035267.012158.0-2.03.05.03.04.08.09.030
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.2-0.4-0.7-0.8-0.2-0.6-1.1-0.7-0.7-1.2-0.9-0.70.20.3-0.6-0.80.30.3-0.1-0.00.40.30.10.20.20.1-0.00.10.10.10.20.30.41.5

us-gaap:RetainedEarningsAccumulatedDeficit dei:LegalEntity

cwen:ClearwayEnergyInc.


Retained
Period End2020-12-312019-12-312018-12-312017-12-31
Value-84.0-72.0-58.0-69.0
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0
Percentage of Assets-0.8-0.7-0.7-0.8
Percentage of Assets cwen:ClearwayEnergyInc.-3.1-3.1-2.3-2.5

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value-8000000.0-9000000.0-10000000.0-14000000.0-15000000.0-19000000.0-21000000.0-15000000.0-17000000.0-16000000.0-19000000.0-18000000.0-14000000.0-17000000.0-20000000.0-28000000.0-27000000.0-28000000.0-25000000.0-28000000.0-48000000.0-47000000.0-44000000.0-27000000.0-32000000.0-16000000.0-23000000.0-9000000.0-6000000.0-9000000.0-2000000.00-2000000.0-24000000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0
Percentage of Assets-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.3-0.3-0.6-0.6-0.6-0.3-0.5-0.2-0.3-0.2-0.1-0.3-0.10.0-0.1-1.2

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax dei:LegalEntity

cwen:ClearwayEnergyInc.


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-31
Value-14000000.0-15000000.0-18000000.0-28000000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0
Percentage of Assets-0.1-0.2-0.2-0.3
Percentage of Assets cwen:ClearwayEnergyInc.-0.5-0.6-0.7-1.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Accumulated
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-302017-12-31
Value-8000000.0-9000000.0-10000000.0-14000000.0-15000000.0-19000000.0-21000000.0-15000000.0-17000000.0-16000000.0-19000000.0-18000000.0-17000000.0-28000000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.3
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AociAttributableToNoncontrollingInterest


Accumulated
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-8000000.0-10000000.0-9000000.0-16000000.0-20000000.0-22000000.0-19000000.0-19000000.0-21000000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0111.190.0106.7105.3104.8111.8118.8110.5
Percentage of Assets-0.1-0.1-0.1-0.2-0.2-0.2-0.2-0.2-0.2
Percentage of Assets us-gaap:AociAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Accumulated
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-30
Value-16000000.0-16000000.0-19000000.0-19000000.0-21000000.0-20000000.0-16000000.0-19000000.0-23000000.0-32000000.0-36000000.0-42000000.0-42000000.0-71000000.0-42000000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax114.3106.7111.8118.8110.5111.1114.3111.8115.0114.3133.3150.0150.0147.989.4
Percentage of Assets-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.3-0.4-0.4-0.5-0.5-0.8-0.6
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value1177120911998903553704634132983223734024404193713914374985085206227427537913483611312462792643853824130.0
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets10.010.210.18.43.73.84.84.33.43.74.44.75.25.04.44.75.25.85.96.27.39.89.810.25.05.02.04.34.78.215.216.517.70.0

us-gaap:MinorityInterest dei:LegalEntity

cwen:ClearwayEnergyInc.


Minority
Period End2020-12-312019-12-312018-12-312017-12-31
Value890413402412
Percentage of MinorityInterest100.0100.0100.0105.4
Percentage of Assets8.44.34.75.0
Percentage of Assets cwen:ClearwayEnergyInc.32.717.816.114.8

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


Stock
Period End2020-09-302020-06-302020-03-312018-09-302018-06-302018-03-31
Value202810.0766510.0
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2020-09-302020-06-302020-03-312018-09-302018-06-302018-03-31
Value202810.0766510.0
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.0

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-09-302021-06-302020-06-302019-09-302019-06-302018-09-302018-06-30
Value1000000.01000000.01000000.01000000.001000000.01000000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.00.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.0

Minority Interest Decrease From Distributions To Noncontrolling Interest Holders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders


Minority
Period End2021-09-302020-09-302020-06-302019-09-302019-06-30
Value116.03.04.030
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders dei:LegalEntity, us-gaap:CounterpartyName, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty

cwen:UtahSolarHoldingsLLC, cwen:ClearwayEnergyOperatingLLC, cwen:UtahSolarHoldingsDue2036, us-gaap:NotesPayableOtherPayables, srt:AffiliatedEntity


Minority
Period End2020-09-01
Value9.0
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders0.0
Percentage of Assets0.0
Percentage of Assets cwen:UtahSolarHoldingsLLC cwen:ClearwayEnergyOperatingLLC cwen:UtahSolarHoldingsDue2036 us-gaap:NotesPayableOtherPayables srt:AffiliatedEntity0.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:CounterpartyName, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty

cwen:ClearwayEnergyOperatingLLC, cwen:NIMHSolarLLCFinancingArrangement, us-gaap:LoansPayable, srt:AffiliatedEntity


Minority
Period End2020-09-30
Value45
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders750.0
Percentage of Assets0.0
Percentage of Assets cwen:ClearwayEnergyOperatingLLC cwen:NIMHSolarLLCFinancingArrangement us-gaap:LoansPayable srt:AffiliatedEntity0.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Minority
Period End2021-09-302020-09-302020-06-302019-09-302019-06-30
Value116.03.04.030
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value2881944710425710084103224896110221511665142203110611212419610210418110.07829121571638122-29.010.038
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax82.151.119.837.177.430.4152.743.8350.0156.1110.944.5341.3200.0106.661.576.638.728.052.288.637.246.449.886.64.643.319.675.242.514.544.2128.4-36.718.990.5

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value-10.0-106.0-314.0-42.0-60.057-17.0-168.0-89.0-185.0-26.0-10.0-9.0-122.0-44.0-79.0-61.0-80.0-63.0-19.0-100.016-58.0-222.0-59.0-348.0-489.053-917.0-331.0127-95.018-129.0-182.0-143.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.8-27.9-132.5-15.0-18.117.3-30.9-71.5-139.1-324.6-47.3-4.4-14.3-210.3-72.1-34.2-23.0-28.2-28.9-8.2-36.86.2-26.4-106.2-28.2-160.4-271.735.8-569.6-247.0115.5-110.518.9-163.3-343.4-340.5

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value-193.0-49.0233-134.0-76.0-121.0-104.085-34.094-320.0102-86.0-2.0-60.0-77.0-118.0-113.0-107.015-30.0-99.0-79.081-278.0505119-63.01081-82.0241-28.0-37.015317397
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-55.0-12.998.3-47.9-22.9-36.8-189.136.2-53.1164.9-581.844.5-136.5-3.4-98.4-33.3-44.5-39.8-49.16.5-11.0-38.4-35.938.8-133.0232.766.1-42.6671.4-61.2219.1-32.6-38.9193.7326.4231.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value8539-34.0-72.012136-37.020101-2.0-285.0194120
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.210.3-14.3-25.736.410.9-67.38.5157.8-3.5-518.284.7190.5

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value1311281281251029910211111289848484828193887875737567661025059544234361716169.010.07.06.06.0
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationDepletionAndAmortization us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:ConventionalGeneration


Depreciation
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value34313432343333272525252526
Percentage of DepreciationDepletionAndAmortization26.024.226.625.633.333.332.424.322.328.129.829.831.0

us-gaap:OperatingSegments, cwen:Renewables


Depreciation
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value90898782615962778058545352
Percentage of DepreciationDepletionAndAmortization68.769.568.065.659.859.660.869.471.465.264.363.161.9

us-gaap:OperatingSegments, cwen:Thermal


Depreciation
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value7.08.07.0117.07.07.07.07.07.06.06.06.0
Percentage of DepreciationDepletionAndAmortization5.36.25.58.86.97.16.96.36.27.97.17.17.1

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet


Increase
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value27273.0163.048-22.0-33.01134-7.0-14.08.045-9.0-31.02124-8.0-14.011-17.01311-61.0675.0-3.0-16.025252.0-79.0737.0-27.0
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value2881944710425710084103224896110221511665142203110611212419610210418110.07829121571638122-29.010.038
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax82.151.119.837.177.430.4152.743.8350.0156.1110.944.5341.3200.0106.661.576.638.728.052.288.637.246.449.886.64.643.319.675.242.514.544.2128.4-36.718.990.5

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312014-09-302014-06-302013-09-302013-06-302012-06-30
Value21353.0-25.03247-29.0-6.039-24.0-20.06.06.09.033-1.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.09.21.3-8.99.614.3-52.7-2.660.9-42.1-36.43.74.59.541.8-2.4

us-gaap:NetIncomeLoss us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Net
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value6.010.01.09.014-9.012-8.0-6.0
Percentage of NetIncomeLoss28.628.633.328.129.831.030.833.330.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.72.60.42.74.3-16.418.8-14.0-10.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CommonClassA0.00.00.00.00.00.00.00.00.0

us-gaap:CommonClassC


Net
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value15252.02233-20.027-16.0-14.0
Percentage of NetIncomeLoss71.471.466.768.870.269.069.266.770.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.36.60.86.610.0-36.442.2-28.1-25.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CommonClassC0.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value2532-76.0-73.04276-107.0-48.035-36.0-47.0-91.049960.0-98.04145-1.0-126.047582.0133441-16.0-10.0313418244034115.04.0-1.05.0
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.18.4-32.1-26.112.723.1-194.5-20.454.7-63.2-85.5-39.777.8165.50.0-42.415.515.8-0.5-54.317.322.50.96.216.318.9-8.9-6.819.325.416.427.942.143.020.811.98.5-2.411.4

us-gaap:ProfitLoss us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Profit
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-37.0-41.0-57.0-32.0-41.0-10.0-13.0-52.0-17.0-33.0-20.0-79.0-55.0
Percentage of ProfitLoss-148.0-128.175.043.8-97.6-13.212.1108.3-48.691.742.686.8-112.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-10.5-10.8-24.1-11.4-12.3-3.0-23.6-22.1-26.6-57.9-36.4-34.5-87.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:ConventionalGeneration


Profit
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value52403343483118384132242839
Percentage of ProfitLoss208.0125.0-43.4-58.9114.340.8-16.8-79.2117.1-88.9-51.1-30.879.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.810.513.915.414.59.432.716.264.156.143.612.261.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:ConventionalGeneration0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cwen:Renewables


Profit
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value6.027-56.0-83.03454-114.0-34.06.0-20.0-56.0-45.055
Percentage of ProfitLoss24.084.473.7113.781.071.1106.570.817.155.6119.149.5112.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.77.1-23.6-29.610.216.4-207.3-14.59.4-35.1-101.8-19.787.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Renewables12.549.1560.0-307.4178.9300.0-1628.6-566.766.7-181.80.00.00.0

us-gaap:OperatingSegments, cwen:Thermal


Profit
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value4.06.04.0-1.01.01.02.00.05.0-15.05.05.010.0
Percentage of ProfitLoss16.018.8-5.31.42.41.3-1.9-0.014.341.7-10.6-5.520.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.61.7-0.40.30.33.60.07.8-26.39.12.215.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cwen:Thermal7.412.08.2-2.31.72.44.20.09.1-32.610.010.418.9

us-gaap:ProfitLoss us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

cwen:DGPVHoldco3


Profit
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.04.0-16.0169.01.0
Percentage of ProfitLoss0.05.315.045.7-25.0-2.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.01.2-29.125.015.81.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cwen:DGPVHoldco30.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value3.0-4.0-81.010.029-78.0-4.0-12.0-27.02817-20.0
Percentage of ProfitLoss12.0-12.5106.623.838.272.9-11.433.357.457.117.70.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.9-1.1-34.23.08.8-141.8-6.2-21.1-49.144.429.3-32.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value21353.0143247-29.039-24.0-20.0217916
Percentage of ProfitLoss84.0109.4-3.9-19.276.261.827.1111.466.742.642.982.30.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.09.21.35.09.614.3-52.760.9-42.1-36.433.3136.226.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value-10.0-106.0-314.0-42.0-60.057-17.0-168.0-89.0-185.0-26.0-10.0-9.0-122.0-44.0-79.0-61.0-80.0-63.0-19.0-100.016-58.0-222.0-59.0-348.0-489.053-917.0-331.0127-95.018-129.0-182.0-143.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.8-27.9-132.5-15.0-18.117.3-30.9-71.5-139.1-324.6-47.3-4.4-14.3-210.3-72.1-34.2-23.0-28.2-28.9-8.2-36.86.2-26.4-106.2-28.2-160.4-271.735.8-569.6-247.0115.5-110.518.9-163.3-343.4-340.5

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value31147929124340281048016211727188.010.09.04.04.05.04.07.0138.05.03.05.0-1.010.0196.0-35.088179107
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments To Acquire Productive Assets

us-gaap:PaymentsToAcquireProductiveAssets cwen:AssetAcquisition

us-gaap:PaymentsToAcquireProductiveAssets

cwen:NedPowerMountStormLLC


Payments
Period End2021-04-23
Value100
Percentage of PaymentsToAcquireProductiveAssets100.0

us-gaap:PaymentsToAcquireProductiveAssets us-gaap:CounterpartyName, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:StatementEquityComponents

cwen:CEG, cwen:PinnacleRepoweringPartnershipHoldCoLLC, us-gaap:NoncontrollingInterest


Payments
Period End2021-03-10
Value21
Percentage of PaymentsToAcquireProductiveAssets0.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value-193.0-49.0233-134.0-76.0-121.0-104.085-34.094-320.0102-86.0-2.0-60.0-77.0-118.0-113.0-107.015-30.0-99.0-79.081-278.0505119-63.01081-82.0241-28.0-37.015317397
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-55.0-12.998.3-47.9-22.9-36.8-189.136.2-53.1164.9-581.844.5-136.5-3.4-98.4-33.3-44.5-39.8-49.16.5-11.0-38.4-35.938.8-133.0232.766.1-42.6671.4-61.2219.1-32.6-38.9193.7326.4231.0

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value2112100430948925531629934894.06000.0213140.00.00.0411255500.00.0255143652100.0538413450.0-99.016335668
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.00.0100.0100.0100.00.00.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value1427195747350711043778484312304425100206791088267756082556755
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value3.817.920.8-69.017.60.2550.171-0.149-0.46-0.1250.130.4250.1830.0681.01.320.1630.1510.5-0.120820.216670.1714300.0595970.190480.0888890.2-0.0950.2440.0560.1430.0120.1110.0290-0.1210.6670.5
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value330319249198219197
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value15151510.0160.0
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.00.0

cwen:AdjustmentsToAdditionalPaidInCapitalDistributionsPaidNonCashNetOfContributions us-gaap:CounterpartyName

cwen:AdjustmentsToAdditionalPaidInCapitalDistributionsPaidNonCashNetOfContributions

cwen:CEG


Adjustments
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302019-09-302019-06-302019-03-31
Value2.03.027-1.08.01.06.012
Percentage of AdjustmentsToAdditionalPaidInCapitalDistributionsPaidNonCashNetOfContributions100.0100.0100.0100.0100.0100.0100.0100.0

cwen:AdjustmentsToAdditionalPaidInCapitalDistributionsPaidNonCashNetOfContributions us-gaap:CounterpartyName, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:StatementEquityComponents

cwen:CEG, cwen:PinnacleRepoweringPartnershipHoldCoLLC, us-gaap:NoncontrollingInterest


Adjustments
Period End2021-03-10
Value27
Percentage of AdjustmentsToAdditionalPaidInCapitalDistributionsPaidNonCashNetOfContributions0.0

cwen:AdjustmentsToAdditionalPaidInCapitalDistributionsPaidNonCashNetOfContributions us-gaap:CounterpartyName, us-gaap:StatementEquityComponents

cwen:CEG, us-gaap:NoncontrollingInterest


Adjustments
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302019-09-302019-06-302019-03-31
Value2.03.027-1.08.01.06.012
Percentage of AdjustmentsToAdditionalPaidInCapitalDistributionsPaidNonCashNetOfContributions100.0100.0100.0100.0100.0100.0100.0100.0

cwen:AmortizationOfIntangiblesAndOutOfMarketContracts

cwen:AmortizationOfIntangiblesAndOutOfMarketContracts


Amortization
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value37383223222322191718171817181718
Percentage of AmortizationOfIntangiblesAndOutOfMarketContracts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cwen:AssetAcquisitionAccountPayableAndOtherCurrentLiabilities cwen:AssetAcquisition

cwen:AssetAcquisitionAccountPayableAndOtherCurrentLiabilities

cwen:AguaCaliente


Asset
Period End2021-02-03
Value5000000.0
Percentage of AssetAcquisitionAccountPayableAndOtherCurrentLiabilities100.0

cwen:NedPowerMountStormLLC


Asset
Period End2021-04-23
Value4000000.0
Percentage of AssetAcquisitionAccountPayableAndOtherCurrentLiabilities0.0

cwen:AssetAcquisitionAcquisitionRelatedCosts

cwen:AssetAcquisitionAcquisitionRelatedCosts


Asset
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-31
Value1000000.01000000.02000000.01000000.001000000.0
Percentage of AssetAcquisitionAcquisitionRelatedCosts100.0100.0100.0100.00.0100.0

cwen:AssetAcquisitionAcquisitionRelatedCosts us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Asset
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-31
Value1000000.01000000.02000000.01000000.001000000.0
Percentage of AssetAcquisitionAcquisitionRelatedCosts100.0100.0100.0100.00.0100.0

cwen:AssetAcquisitionAssetsAcquired cwen:AssetAcquisition

cwen:AssetAcquisitionAssetsAcquired

cwen:AguaCaliente


Asset
Period End2021-02-03
Value1276
Percentage of AssetAcquisitionAssetsAcquired100.0

cwen:NedPowerMountStormLLC


Asset
Period End2021-04-23
Value113
Percentage of AssetAcquisitionAssetsAcquired0.0

cwen:RattlesnakeTEHoldcoLLC


Asset
Period End2021-01-12
Value220
Percentage of AssetAcquisitionAssetsAcquired0.0

cwen:AssetAcquisitionAssetsAcquiredAndLiabilitiesAssumedNet cwen:AssetAcquisition

cwen:AssetAcquisitionAssetsAcquiredAndLiabilitiesAssumedNet

cwen:AguaCaliente


Asset
Period End2021-02-03
Value202
Percentage of AssetAcquisitionAssetsAcquiredAndLiabilitiesAssumedNet100.0

cwen:NedPowerMountStormLLC


Asset
Period End2021-04-23
Value100
Percentage of AssetAcquisitionAssetsAcquiredAndLiabilitiesAssumedNet0.0

cwen:RattlesnakeTEHoldcoLLC


Asset
Period End2021-01-12
Value14
Percentage of AssetAcquisitionAssetsAcquiredAndLiabilitiesAssumedNet0.0

cwen:AssetAcquisitionCashAndCashEquivalentsAndRestrictedCash cwen:AssetAcquisition

cwen:AssetAcquisitionCashAndCashEquivalentsAndRestrictedCash

cwen:AguaCaliente


Asset
Period End2021-02-03
Value91
Percentage of AssetAcquisitionCashAndCashEquivalentsAndRestrictedCash100.0

cwen:AssetAcquisitionConsiderationGross cwen:AssetAcquisition

cwen:AssetAcquisitionConsiderationGross

cwen:NedPowerMountStormLLC


Asset
Period End2021-04-23
Value96
Percentage of AssetAcquisitionConsiderationGross100.0

cwen:AssetAcquisitionConsiderationTransferredWorkingCapitalAndPurchasePriceAdjustments cwen:AssetAcquisition

cwen:AssetAcquisitionConsiderationTransferredWorkingCapitalAndPurchasePriceAdjustments

cwen:NedPowerMountStormLLC


Asset
Period End2021-04-23
Value4000000.0
Percentage of AssetAcquisitionConsiderationTransferredWorkingCapitalAndPurchasePriceAdjustments100.0

cwen:AssetAcquisitionCurrentAssets cwen:AssetAcquisition

cwen:AssetAcquisitionCurrentAssets

cwen:NedPowerMountStormLLC


Asset
Period End2021-04-23
Value3000000.0
Percentage of AssetAcquisitionCurrentAssets100.0

cwen:RattlesnakeTEHoldcoLLC


Asset
Period End2021-01-12
Value8000000.0
Percentage of AssetAcquisitionCurrentAssets0.0

cwen:AssetAcquisitionDerivativeInstrumentNotionalAmount cwen:AssetAcquisition

cwen:AssetAcquisitionDerivativeInstrumentNotionalAmount

cwen:NedPowerMountStormLLC


Asset
Period End2021-04-23
Value9000000.0
Percentage of AssetAcquisitionDerivativeInstrumentNotionalAmount100.0

cwen:AssetAcquisitionEquityMethodInvestmentRemoved cwen:AssetAcquisition

cwen:AssetAcquisitionEquityMethodInvestmentRemoved

cwen:AguaCaliente


Asset
Period End2021-02-03
Value-80000000.0
Percentage of AssetAcquisitionEquityMethodInvestmentRemoved100.0

cwen:AssetAcquisitionLeaseLiabilitiesNoncurrent cwen:AssetAcquisition

cwen:AssetAcquisitionLeaseLiabilitiesNoncurrent

cwen:RattlesnakeTEHoldcoLLC


Asset
Period End2021-01-12
Value12
Percentage of AssetAcquisitionLeaseLiabilitiesNoncurrent100.0

cwen:AssetAcquisitionLiabilitiesAssumed cwen:AssetAcquisition

cwen:AssetAcquisitionLiabilitiesAssumed

cwen:AguaCaliente


Asset
Period End2021-02-03
Value721
Percentage of AssetAcquisitionLiabilitiesAssumed100.0

cwen:NedPowerMountStormLLC


Asset
Period End2021-04-23
Value13
Percentage of AssetAcquisitionLiabilitiesAssumed0.0

cwen:RattlesnakeTEHoldcoLLC


Asset
Period End2021-01-12
Value206
Percentage of AssetAcquisitionLiabilitiesAssumed0.0

cwen:AssetAcquisitionLiabilitiesOtherCurrentAndNoncurrent cwen:AssetAcquisition

cwen:AssetAcquisitionLiabilitiesOtherCurrentAndNoncurrent

cwen:RattlesnakeTEHoldcoLLC


Asset
Period End2021-01-12
Value18
Percentage of AssetAcquisitionLiabilitiesOtherCurrentAndNoncurrent100.0

cwen:AssetAcquisitionLongTermDebt cwen:AssetAcquisition

cwen:AssetAcquisitionLongTermDebt

cwen:AguaCaliente


Asset
Period End2021-02-03
Value716
Percentage of AssetAcquisitionLongTermDebt100.0

cwen:RattlesnakeTEHoldcoLLC


Asset
Period End2021-01-12
Value176
Percentage of AssetAcquisitionLongTermDebt0.0

cwen:AssetAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue cwen:AssetAcquisition

cwen:AssetAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue

cwen:AguaCaliente


Asset
Period End2021-02-03
Value273
Percentage of AssetAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue100.0

cwen:AssetAcquisitionOtherAssetsCurrent cwen:AssetAcquisition

cwen:AssetAcquisitionOtherAssetsCurrent

cwen:AguaCaliente


Asset
Period End2021-02-03
Value9000000.0
Percentage of AssetAcquisitionOtherAssetsCurrent100.0

cwen:AssetAcquisitionRestrictedCash cwen:AssetAcquisition

cwen:AssetAcquisitionRestrictedCash

cwen:AguaCaliente


Asset
Period End2021-02-03
Value91
Percentage of AssetAcquisitionRestrictedCash100.0

cwen:AssetAcquisitionRightOfUseAsset cwen:AssetAcquisition

cwen:AssetAcquisitionRightOfUseAsset

cwen:RattlesnakeTEHoldcoLLC


Asset
Period End2021-01-12
Value12
Percentage of AssetAcquisitionRightOfUseAsset100.0

cwen:ChangesinPrepaidandAccruedCapacityPayments

cwen:ChangesinPrepaidandAccruedCapacityPayments


Changesin
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-96.0324416-92.0324511-72.025358.0-70.026369.0
Percentage of ChangesinPrepaidandAccruedCapacityPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cwen:GainLossOnExtinguishmentOfDeferredFinancingFees us-gaap:DebtInstrument

cwen:GainLossOnExtinguishmentOfDeferredFinancingFees

cwen:A5.75SeniorNotesdue2025


Gain
Period End2021-09-30
Value0
Percentage of GainLossOnExtinguishmentOfDeferredFinancingFees0.0

cwen:LimitedLiabilityCompanyLLCorLimitedPartnershipLPMembersorLimitedPartnersVotingInterest dei:LegalEntity, us-gaap:Ownership

cwen:LimitedLiabilityCompanyLLCorLimitedPartnershipLPMembersorLimitedPartnersVotingInterest

cwen:CEG, cwen:ClearwayEnergyInc.


Limited
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-31
Value0054.9354.391-0.00010.5495
Percentage of LimitedLiabilityCompanyLLCorLimitedPartnershipLPMembersorLimitedPartnersVotingInterest0.00.0100.0100.0100.0100.0

cwen:PublicShareholders, cwen:ClearwayEnergyInc.


Limited
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-31
Value0045.0744.6090.00010.4505
Percentage of LimitedLiabilityCompanyLLCorLimitedPartnershipLPMembersorLimitedPartnersVotingInterest0.00.082.082.0-100.082.0

cwen:NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestIncludingRoundingAdjustments

cwen:NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestIncludingRoundingAdjustments


Net
Period End2021-09-302021-06-302021-03-31
Value2431-78.0
Percentage of NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestIncludingRoundingAdjustments100.0100.0100.0

cwen:NoncontrollingInterestAdjustmentForPurchaseOfInterests

cwen:NoncontrollingInterestAdjustmentForPurchaseOfInterests


Noncontrolling
Period End2020-09-01
Value83
Percentage of NoncontrollingInterestAdjustmentForPurchaseOfInterests100.0

cwen:NoncontrollingInterestAdjustmentForPurchaseOfInterests us-gaap:ConsolidatedEntities

cwen:DGPVHoldco1And2


Noncontrolling
Period End2020-11-02
Value144
Percentage of NoncontrollingInterestAdjustmentForPurchaseOfInterests0.0

cwen:NoncontrollingInterestAdjustmentForPurchaseOfInterests us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

cwen:MesquiteStarHoldCoLLC


Noncontrolling
Period End2020-09-01
Value83
Percentage of NoncontrollingInterestAdjustmentForPurchaseOfInterests100.0

cwen:NoncontrollingInterestDecreasefromDistributionstoNoncontrollingInterestHoldersCash us-gaap:CounterpartyName

cwen:NoncontrollingInterestDecreasefromDistributionstoNoncontrollingInterestHoldersCash

cwen:TaxEquityInvestors


Noncontrolling
Period End2020-09-302020-06-30
Value6.03.0
Percentage of NoncontrollingInterestDecreasefromDistributionstoNoncontrollingInterestHoldersCash100.0100.0

cwen:NoncontrollingInterestDecreasefromDistributionstoNoncontrollingInterestHoldersCash us-gaap:CounterpartyName, us-gaap:StatementEquityComponents

cwen:TaxEquityInvestors, us-gaap:NoncontrollingInterest


Noncontrolling
Period End2020-09-302020-06-30
Value6.03.0
Percentage of NoncontrollingInterestDecreasefromDistributionstoNoncontrollingInterestHoldersCash100.0100.0

cwen:OperatingLeaseRightofUseAssetAmortization

cwen:OperatingLeaseRightofUseAssetAmortization


Operating
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3000000.03000000.02000000.03000000.02000000.0-3000000.02000000.02000000.02000000.03000000.00
Percentage of OperatingLeaseRightofUseAssetAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

cwen:PaymentsForAssetAcquisition

cwen:PaymentsForAssetAcquisition


Payments
Period End2021-09-302021-06-302021-03-31
Value0.0100111
Percentage of PaymentsForAssetAcquisition0.0100.0100.0

cwen:PaymentsForAssetAcquisition cwen:AssetAcquisition

cwen:AguaCaliente


Payments
Period End2021-02-03
Value202
Percentage of PaymentsForAssetAcquisition0.0

cwen:RattlesnakeTEHoldcoLLC


Payments
Period End2021-01-12
Value132
Percentage of PaymentsForAssetAcquisition0.0

cwen:PaymentsForAssetAcquisitionNetCashOutflow cwen:AssetAcquisition

cwen:PaymentsForAssetAcquisitionNetCashOutflow

cwen:AguaCaliente


Payments
Period End2021-02-03
Value111
Percentage of PaymentsForAssetAcquisitionNetCashOutflow100.0

cwen:PaymentsToAcquireAssetsFromAffiliate

cwen:PaymentsToAcquireAssetsFromAffiliate


Payments
Period End2021-09-30
Value0.0
Percentage of PaymentsToAcquireAssetsFromAffiliate0.0

cwen:PaymentsToAcquireBusinessTwo

cwen:PaymentsToAcquireBusinessTwo


Payments
Period End2021-09-302021-06-302021-03-31
Value0.00.0132
Percentage of PaymentsToAcquireBusinessTwo0.00.0100.0

cwen:PaymentsToFundProjectReserveAccounts

cwen:PaymentsToFundProjectReserveAccounts


Payments
Period End2021-01-12
Value29
Percentage of PaymentsToFundProjectReserveAccounts100.0

cwen:PaymenttoAcquireBusinessunderCommonControl

cwen:PaymenttoAcquireBusinessunderCommonControl


Paymentto
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value431556.00.00.00.00.0844274
Percentage of PaymenttoAcquireBusinessunderCommonControl100.0100.0100.00.00.00.00.0100.0100.0100.0

cwen:PropertyPlantAndEquipmentAdditionsNet cwen:AssetAcquisition

cwen:PropertyPlantAndEquipmentAdditionsNet

cwen:AguaCaliente


Property
Period End2021-02-03
Value154
Percentage of PropertyPlantAndEquipmentAdditionsNet100.0

cwen:NedPowerMountStormLLC


Property
Period End2021-04-23
Value108
Percentage of PropertyPlantAndEquipmentAdditionsNet0.0

cwen:RattlesnakeTEHoldcoLLC


Property
Period End2021-01-12
Value200
Percentage of PropertyPlantAndEquipmentAdditionsNet0.0

cwen:RevenueMarktomarketHedgingActivities us-gaap:ConsolidationItems

cwen:RevenueMarktomarketHedgingActivities

us-gaap:OperatingSegments


Revenue
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3531240.03.05.00.02.00.07.0
Percentage of RevenueMarktomarketHedgingActivities100.0100.0100.00.0100.0100.00.0100.00.0100.0

cwen:RevenueMarktomarketHedgingActivities us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:Renewables


Revenue
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3531240.03.05.00.02.00.07.0
Percentage of RevenueMarktomarketHedgingActivities100.0100.0100.00.0100.0100.00.0100.00.0100.0

cwen:SaleOfStockCommissionFees

cwen:SaleOfStockCommissionFees


Sale
Period End2020-12-312020-09-30
Value0200000.0
Percentage of SaleOfStockCommissionFees0.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302019-09-302019-06-302018-09-302018-06-302018-03-312015-12-31
Value-1.02.0207.0-1.02.0-1.00.03.09.0
Percentage of AdjustmentsToAdditionalPaidInCapitalOther100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302019-09-302019-06-302018-09-302018-06-302018-03-31
Value-1.02.0207.0-1.02.0-1.0-2.03.0
Percentage of AdjustmentsToAdditionalPaidInCapitalOther100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:AmortizationOfFinancingCostsAndDiscounts

us-gaap:AmortizationOfFinancingCostsAndDiscounts


Amortization
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value3.03.04.03.04.04.04.03.07.03.04.05.06.06.07.07.07.06.05.05.05.05.05.05.05.03.03.02.03.04.01.01.00.00.01.00.0
Percentage of AmortizationOfFinancingCostsAndDiscounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts

us-gaap:BusinessCombinationAcquisitionRelatedCosts


Business
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302013-12-312013-09-30
Value1.01.02.07.01.00.01.01.00.01.01.01.0171.01.01.00.01.01.01.00.00.00.01.01.01.02.02.00.00.0
Percentage of BusinessCombinationAcquisitionRelatedCosts100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.00.00.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Business
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value7.01.00.01.01.00.01.01.01.017
Percentage of BusinessCombinationAcquisitionRelatedCosts100.0100.00.0100.0100.00.0100.0100.0100.0100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

us-gaap:BusinessCombinationConsiderationTransferred1

cwen:AguaCaliente, us-gaap:SubsequentEvent


Business
Period End2021-02-03
Value202
Percentage of BusinessCombinationConsiderationTransferred1100.0

cwen:NedPowerMountStormLLC, us-gaap:SubsequentEvent


Business
Period End2021-04-23
Value96
Percentage of BusinessCombinationConsiderationTransferred10.0

cwen:RattlesnakeFlatLLC, us-gaap:SubsequentEvent


Business
Period End2021-01-12
Value132
Percentage of BusinessCombinationConsiderationTransferred10.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:CounterpartyName, us-gaap:BusinessAcquisition

cwen:CEG, cwen:LangfordHoldingLLC


Business
Period End2020-11-20
Value55
Percentage of BusinessCombinationConsiderationTransferred10.0

cwen:ThirdPartyInvestor, cwen:LangfordHoldingLLC


Business
Period End2020-11-20
Value9.0
Percentage of BusinessCombinationConsiderationTransferred10.0

us-gaap:CapitalizedContractCostAmortization us-gaap:ConsolidationItems

us-gaap:CapitalizedContractCostAmortization

us-gaap:OperatingSegments


Capitalized
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3837322222222219181717
Percentage of CapitalizedContractCostAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedContractCostAmortization us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:ConventionalGeneration


Capitalized
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5.06.06.06.06.06.06.03.01.02.01.0
Percentage of CapitalizedContractCostAmortization13.216.218.827.327.327.327.315.85.611.85.9

us-gaap:OperatingSegments, cwen:Renewables


Capitalized
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3230251515161515161515
Percentage of CapitalizedContractCostAmortization84.281.178.168.268.272.768.278.988.988.288.2

us-gaap:OperatingSegments, cwen:Thermal


Capitalized
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.01.01.01.01.00.01.01.01.00.01.0
Percentage of CapitalizedContractCostAmortization2.62.73.14.54.50.04.55.35.60.05.9

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths


Cash
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-8000000.0-9000000.0-9000000.00-9000000.0-10000000.0-9000000.0-7000000.0-1000000.0-8000000.0
Percentage of CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared us-gaap:SubsequentEventType

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:SubsequentEvent


Common
Period End2020-08-032020-07-302020-04-302020-02-182019-08-01
Value0.31250.31250.210.210.2
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0

us-gaap:CostsIncurredDevelopmentCosts

us-gaap:CostsIncurredDevelopmentCosts


Costs
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value3000000.01000000.01000000.01000000.02000000.01000000.01000000.01000000.01000000.02000000.01000000.02000000.01000000.00000
Percentage of CostsIncurredDevelopmentCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:CostsIncurredDevelopmentCosts us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Costs
Period End2021-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2000000.000000001000000.0
Percentage of CostsIncurredDevelopmentCosts66.70.00.00.00.00.00.00.0100.0

us-gaap:CostsIncurredDevelopmentCosts us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:Thermal


Costs
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1000000.01000000.01000000.01000000.02000000.01000000.01000000.01000000.01000000.02000000.01000000.02000000.00
Percentage of CostsIncurredDevelopmentCosts33.3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DepreciationAmortizationAndAccretionNet

us-gaap:DepreciationAmortizationAndAccretionNet


Depreciation
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value13112812812510299102111112898484848281938878757477757475
Percentage of DepreciationAmortizationAndAccretionNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLossOnDerivative us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeLossOnDerivative

us-gaap:EnergyRelatedDerivative


Derivative
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value362822-4.00.03.05.00.07.0
Percentage of DerivativeLossOnDerivative100.0100.0100.0100.00.0100.0100.00.0100.0

us-gaap:DerivativeNonmonetaryNotionalAmountEnergyMeasure us-gaap:Position, us-gaap:UnderlyingAssetClass

us-gaap:DerivativeNonmonetaryNotionalAmountEnergyMeasure

us-gaap:Long, srt:NaturalGasReserves


Derivative
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1.001.00-1.01.01.02.0
Percentage of DerivativeNonmonetaryNotionalAmountEnergyMeasure100.00.0100.00.0100.0100.0100.0100.0

us-gaap:Short, cwen:Power


Derivative
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value-1.05.08.06.0002.02.0
Percentage of DerivativeNonmonetaryNotionalAmountEnergyMeasure-100.00.0800.00.0-0.00.0200.0100.0

us-gaap:DividendsCommonStock

us-gaap:DividendsCommonStock


Dividends
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302018-03-31
Value6342423938395855
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStock us-gaap:CounterpartyName

cwen:CEG


Dividends
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-31
Value676666634242
Percentage of DividendsCommonStock0.00.00.0100.0100.0100.0

us-gaap:DividendsCommonStock us-gaap:CounterpartyName, us-gaap:StatementEquityComponents

cwen:CEG, us-gaap:AdditionalPaidInCapital


Dividends
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-31
Value393838362424
Percentage of DividendsCommonStock0.00.00.057.157.157.1

cwen:CEG, us-gaap:NoncontrollingInterest


Dividends
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-31
Value282828271818
Percentage of DividendsCommonStock0.00.00.042.942.942.9

us-gaap:DividendsCommonStock us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Dividends
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302018-03-31
Value3624242221223229
Percentage of DividendsCommonStock57.157.157.156.455.356.455.252.7

us-gaap:NoncontrollingInterest


Dividends
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302018-03-31
Value2718181717172626
Percentage of DividendsCommonStock42.942.942.943.644.743.644.847.3

us-gaap:EquityMethodInvestmentDividendsOrDistributions

us-gaap:EquityMethodInvestmentDividendsOrDistributions


Equity
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-03-312013-03-31
Value9.03.01310.0415.05.02.010.01111122619132023161310.017157.03.08.03.0-6.0
Percentage of EquityMethodInvestmentDividendsOrDistributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestmentOtherThanTemporaryImpairment us-gaap:StatementBusinessSegments

us-gaap:EquityMethodInvestmentOtherThanTemporaryImpairment

cwen:Renewables


Equity
Period End2020-12-31
Value8000000.0
Percentage of EquityMethodInvestmentOtherThanTemporaryImpairment100.0

us-gaap:EquityMethodInvestmentRealizedGainLossOnDisposal

us-gaap:EquityMethodInvestmentRealizedGainLossOnDisposal


Equity
Period End2020-12-312020-09-302020-06-302019-06-30
Value0.00.0490.0
Percentage of EquityMethodInvestmentRealizedGainLossOnDisposal0.00.0100.00.0

us-gaap:EquityMethodInvestmentRealizedGainLossOnDisposal us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Equity
Period End2020-12-312020-09-302020-06-30
Value0.00.049
Percentage of EquityMethodInvestmentRealizedGainLossOnDisposal0.00.0100.0

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Fair
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-37000000.0-33000000.0-24000000.00-3000000.0-5000000.0-1000000.0-2000000.00000
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings100.0100.0100.00.0100.0100.0100.0100.00.00.00.00.0

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Fair
Period End2021-09-302021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0-9000000.00013000000.0007000000.0000
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases0.0100.00.00.0100.00.00.0100.00.00.00.0

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Fair
Period End2021-09-302021-06-30
Value3000000.02000000.0
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements100.0100.0

us-gaap:FinitelivedIntangibleAssetsAcquired1 cwen:AssetAcquisition

us-gaap:FinitelivedIntangibleAssetsAcquired1

cwen:AguaCaliente


Finitelived
Period End2021-02-03
Value1022
Percentage of FinitelivedIntangibleAssetsAcquired1100.0

cwen:NedPowerMountStormLLC


Finitelived
Period End2021-04-23
Value2.0
Percentage of FinitelivedIntangibleAssetsAcquired10.0

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainLossOnSaleOfPropertyPlantEquipment


Gain
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-7000000.04000000.000-4000000.02000000.0-5000000.0-2000000.0-2000000.01000000.03000000.0-2000000.0-8000000.0-4000000.0-1000000.0-3000000.0-1000000.0-1000000.0-4000000.00-1000000.00
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value208.04.0-15.01916-13.03138113.09.032294.08.02816198.013182.06.0199.01.01.011141.04.0122.04.04.06.06.0
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:ConventionalGeneration


Income
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2.02.02.02.03.01.02.02.03.02.02.03.03.0
Percentage of IncomeLossFromEquityMethodInvestments10.025.050.0-13.315.86.2-15.46.57.918.266.733.39.4

us-gaap:OperatingSegments, cwen:Renewables


Income
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value186.02.0-17.01615-15.029359.01.06.029
Percentage of IncomeLossFromEquityMethodInvestments90.075.050.0113.384.293.8115.493.592.181.833.366.790.6

us-gaap:IncreaseDecreaseInDerivativeAssetsAndLiabilities

us-gaap:IncreaseDecreaseInDerivativeAssetsAndLiabilities


Increase
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value-30.0-47.0271937-15.0-85.016-31.0-42.0-28.0-23.07.09.023146.0-7.03.0143.04.0-2.09.01.0332.0-14.05.00.00.07.04.08.02.01.0
Percentage of IncreaseDecreaseInDerivativeAssetsAndLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxes

us-gaap:IncreaseDecreaseInIncomeTaxes


Increase
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value1.07.0-20.0-5.09.026-22.06.0-11.04.0-7.045117.0-1.0578.08.0-1.0-26.013120.04.08.04.0-4.0-11.010.02.03.03.00.0
Percentage of IncreaseDecreaseInIncomeTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value7.07.08.06.05.05.05.06.0
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest dei:LegalEntity, us-gaap:Ownership

us-gaap:LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest

cwen:CEG, cwen:ClearwayEnergyLLC


Limited
Period End2021-09-302020-12-312020-09-302020-06-302020-03-31
Value0-0.0341.994-0.00280.4287
Percentage of LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest0.0100.0100.0100.0100.0

cwen:ClearwayEnergyLLC, cwen:ClearwayEnergyInc.


Limited
Period End2021-09-30
Value0
Percentage of LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest0.0

us-gaap:LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest us-gaap:Ownership

cwen:ClearwayEnergyLLC


Limited
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.0357.0060.00280.5713
Percentage of LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest-100.0135.7-100.0133.3

us-gaap:MinorityInterestDecreaseFromRedemptions cwen:AssetAcquisition

us-gaap:MinorityInterestDecreaseFromRedemptions

cwen:RattlensakeDown


Minority
Period End2021-06-302021-03-31
Value-1.0118
Percentage of MinorityInterestDecreaseFromRedemptions100.0100.0

us-gaap:MinorityInterestDecreaseFromRedemptions cwen:AssetAcquisition, us-gaap:StatementEquityComponents

cwen:RattlensakeDown, us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302021-03-31
Value-1.0118
Percentage of MinorityInterestDecreaseFromRedemptions100.0100.0

us-gaap:MinorityInterestDecreaseFromRedemptions us-gaap:ConsolidatedEntities

cwen:DGPVHoldco3


Minority
Period End2020-09-302020-06-30
Value-1.043
Percentage of MinorityInterestDecreaseFromRedemptions0.00.0

cwen:MesquiteStarHoldCoLLC


Minority
Period End2020-09-30
Value4.0
Percentage of MinorityInterestDecreaseFromRedemptions0.0

us-gaap:MinorityInterestDecreaseFromRedemptions us-gaap:ConsolidatedEntities, us-gaap:StatementEquityComponents

cwen:DGPVHoldco3, us-gaap:NoncontrollingInterest


Minority
Period End2020-09-302020-06-30
Value-1.043
Percentage of MinorityInterestDecreaseFromRedemptions0.00.0

cwen:MesquiteStarHoldCoLLC, us-gaap:NoncontrollingInterest


Minority
Period End2020-09-30
Value4.0
Percentage of MinorityInterestDecreaseFromRedemptions0.0

us-gaap:NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest us-gaap:CounterpartyName

us-gaap:NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest

cwen:CEG


Noncontrolling
Period End2021-06-302021-03-312020-06-302020-03-312019-03-31
Value1.01032.04.012
Percentage of NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest100.0100.0100.0100.0100.0

cwen:TaxEquityInvestors


Noncontrolling
Period End2021-06-302021-03-312020-03-312019-03-312018-06-302018-03-31
Value38126150197930
Percentage of NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest3800.0122.33750.0158.30.00.0

us-gaap:NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest us-gaap:CounterpartyName, us-gaap:StatementEquityComponents

cwen:CEG, us-gaap:NoncontrollingInterest


Noncontrolling
Period End2021-06-302021-03-312020-06-302020-03-312019-03-31
Value1.01032.04.012
Percentage of NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest100.0100.0100.0100.0100.0

cwen:TaxEquityInvestors, us-gaap:NoncontrollingInterest


Noncontrolling
Period End2021-06-302021-03-312020-03-312019-03-312018-06-302018-03-31
Value38126150197930
Percentage of NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest3800.0122.33750.0158.30.00.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5.05.05.04.07.02.02.02.0
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseLeaseIncome

us-gaap:OperatingLeaseLeaseIncome


Operating
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value254275294225252244179246
Percentage of OperatingLeaseLeaseIncome100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseLeaseIncome us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Operating
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value322343254275294225252244
Percentage of OperatingLeaseLeaseIncome0.00.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseLeaseIncome us-gaap:ConsolidationItems, us-gaap:ProductOrService

us-gaap:OperatingSegments, cwen:CapacityRevenue


Operating
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value1201131071191121078985
Percentage of OperatingLeaseLeaseIncome0.00.042.143.338.147.635.334.8

us-gaap:OperatingSegments, cwen:EnergyRevenue


Operating
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value202230147156182118163159
Percentage of OperatingLeaseLeaseIncome0.00.057.956.761.952.464.765.2

us-gaap:OperatingLeaseLeaseIncome us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:CapacityRevenue, cwen:ConventionalGeneration


Operating
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value1201131071191121078985
Percentage of OperatingLeaseLeaseIncome0.00.042.143.338.147.635.334.8

us-gaap:OperatingSegments, cwen:EnergyRevenue, cwen:ConventionalGeneration


Operating
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value3.02.01.03.01.02.02.01.0
Percentage of OperatingLeaseLeaseIncome0.00.00.41.10.30.90.80.4

us-gaap:OperatingSegments, cwen:EnergyRevenue, cwen:Renewables


Operating
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value198228145153181115160157
Percentage of OperatingLeaseLeaseIncome0.00.057.155.661.651.163.564.3

us-gaap:OperatingSegments, cwen:EnergyRevenue, cwen:Thermal


Operating
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value1.00.01.00.00.01.01.01.0
Percentage of OperatingLeaseLeaseIncome0.00.00.40.00.00.40.40.4

us-gaap:OperatingLeaseLeaseIncome us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:ConventionalGeneration


Operating
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value1231151081221131099186
Percentage of OperatingLeaseLeaseIncome0.00.042.544.438.448.436.135.2

us-gaap:OperatingSegments, cwen:Renewables


Operating
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value198228145153181115160157
Percentage of OperatingLeaseLeaseIncome0.00.057.155.661.651.163.564.3

us-gaap:OperatingSegments, cwen:Thermal


Operating
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value1.00.01.00.00.01.01.01.0
Percentage of OperatingLeaseLeaseIncome0.00.00.40.00.00.40.40.4

us-gaap:OperatingLeaseLeaseIncome us-gaap:ProductOrService

cwen:CapacityRevenue


Operating
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value10711911210789857986
Percentage of OperatingLeaseLeaseIncome42.143.338.147.635.334.844.135.0

cwen:EnergyRevenue


Operating
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value147156182118163159100160
Percentage of OperatingLeaseLeaseIncome57.956.761.952.464.765.255.965.0

us-gaap:OperatingLeaseLeaseIncome us-gaap:StatementBusinessSegments

cwen:ConventionalGeneration


Operating
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value10812211310991868088
Percentage of OperatingLeaseLeaseIncome42.544.438.448.436.135.244.735.8

cwen:Renewables


Operating
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value14515318111516015799158
Percentage of OperatingLeaseLeaseIncome57.155.661.651.163.564.355.364.2

cwen:Thermal


Operating
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value1.00.00.01.01.01.00.0-0.0
Percentage of OperatingLeaseLeaseIncome0.40.00.00.40.40.40.0-0.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value6.03.03.07.0-3.00.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.00.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax


Other
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-2000000.002000000.0-1000000.01000000.0-2000000.01000000.0000
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax100.00.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherCostAndExpenseOperating


Other
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-31
Value117107110958793
Percentage of OtherCostAndExpenseOperating100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForFees

us-gaap:PaymentsForFees


Payments
Period End2021-01-12
Value5000000.0
Percentage of PaymentsForFees100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-4.00.00.0-4.00.01.0-3.0-3.0-1.0-3.0-4.0-7.00.00.00.00.0-2.00.00.00.00.00.00.00.0-11.00.00.00.00.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.00.00.00.00.00.00.00.0100.00.00.00.00.0

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsOfDebtIssuanceCosts


Payments
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value0.0-2.01510.08.010.00.09.00.05.00.00.00.01.03.01.06.00.00.00.02.0110.01.0135.08.00.01.00.04.01.0
Percentage of PaymentsOfDebtIssuanceCosts0.0100.0100.0100.0100.0100.00.0100.00.0100.00.00.00.0100.0100.0100.0100.00.00.00.0100.0100.00.0100.0100.0100.0100.00.0100.00.0100.0100.0

us-gaap:PaymentsOfOrdinaryDividends

us-gaap:PaymentsOfOrdinaryDividends


Payments
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value6766666463424239393839
Percentage of PaymentsOfOrdinaryDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition

us-gaap:PaymentsToAcquireBusinessesGross

cwen:LangfordHoldingLLC


Payments
Period End2020-11-20
Value64
Percentage of PaymentsToAcquireBusinessesGross100.0

cwen:RosieTargetCoLLC


Payments
Period End2020-12-21
Value23
Percentage of PaymentsToAcquireBusinessesGross0.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

cwen:RosieTargetCoLLC, us-gaap:SubsequentEvent


Payments
Period End2021-01-31
Value1.0
Percentage of PaymentsToAcquireBusinessesGross0.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:CounterpartyName, us-gaap:BusinessAcquisition

cwen:SERC, cwen:DGPVFunds


Payments
Period End2020-11-02
Value24
Percentage of PaymentsToAcquireBusinessesGross0.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:CounterpartyName, us-gaap:BusinessAcquisition, us-gaap:RelatedPartyTransactionsByRelatedParty

cwen:RenewDGHoldingsLLC, cwen:DGPVFunds, srt:AffiliatedEntity


Payments
Period End2020-11-02
Value20
Percentage of PaymentsToAcquireBusinessesGross0.0

us-gaap:PaymentsToAcquireEquityMethodInvestments

us-gaap:PaymentsToAcquireEquityMethodInvestments


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312014-09-302013-09-30
Value0.01.03.07.0-1.05.05.04.0182.00.0
Percentage of PaymentsToAcquireEquityMethodInvestments0.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:PaymentsToAcquireEquityMethodInvestments us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

cwen:MesquiteStarHoldCoLLC


Payments
Period End2020-09-01
Value79
Percentage of PaymentsToAcquireEquityMethodInvestments0.0

us-gaap:PaymentsToAcquireInterestInSubsidiariesAndAffiliates

us-gaap:PaymentsToAcquireInterestInSubsidiariesAndAffiliates


Payments
Period End2020-09-302019-06-302019-03-312018-06-302018-03-31
Value0.00.0190.00.0
Percentage of PaymentsToAcquireInterestInSubsidiariesAndAffiliates0.00.0100.00.00.0

us-gaap:PaymentsToAcquireInterestInSubsidiariesAndAffiliates us-gaap:ConsolidatedEntities, us-gaap:SubsequentEventType

cwen:DGPVHoldco3, us-gaap:SubsequentEvent


Payments
Period End2020-11-02
Value44
Percentage of PaymentsToAcquireInterestInSubsidiariesAndAffiliates0.0

us-gaap:PaymentsToMinorityShareholders

us-gaap:PaymentsToMinorityShareholders


Payments
Period End2020-09-30
Value0.0
Percentage of PaymentsToMinorityShareholders0.0

us-gaap:ProceedsFromCollectionOfNotesReceivable

us-gaap:ProceedsFromCollectionOfNotesReceivable


Proceeds
Period End2021-09-30
Value0
Percentage of ProceedsFromCollectionOfNotesReceivable0.0

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital


Proceeds
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value17128.02630111219203.014234.04.014157.09.01612-13.0218.0261.0
Percentage of ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromInsuranceSettlementInvestingActivities

us-gaap:ProceedsFromInsuranceSettlementInvestingActivities


Proceeds
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value2000000.003000000.02000000.000
Percentage of ProceedsFromInsuranceSettlementInvestingActivities100.00.0100.0100.00.00.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302013-12-312013-07-222012-12-31
Value4.0202810.01000.00.00.02.0766510.00.0189.07.00.00.00.00.00.0-1.00.06300.04680.0
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.00.0100.0100.0100.00.00.00.00.00.0100.00.0100.00.0100.00.0

us-gaap:ProceedsFromIssuanceOrSaleOfEquity

us-gaap:ProceedsFromIssuanceOrSaleOfEquity


Proceeds
Period End2020-12-312019-12-022018-09-27
Value4.010075
Percentage of ProceedsFromIssuanceOrSaleOfEquity100.0100.0100.0

us-gaap:ProceedsFromIssuanceOrSaleOfEquity us-gaap:SubsidiarySaleOfStock

cwen:A2016ATMProgram


Proceeds
Period End2020-12-31
Value1.0
Percentage of ProceedsFromIssuanceOrSaleOfEquity25.0

cwen:A2020ATMProgram


Proceeds
Period End2020-12-31
Value3.0
Percentage of ProceedsFromIssuanceOrSaleOfEquity75.0

us-gaap:ProceedsFromLinesOfCredit

us-gaap:ProceedsFromLinesOfCredit


Proceeds
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value771051950.00.0851801300.0220.00.00.01520550.00.00.00.00.010.050
Percentage of ProceedsFromLinesOfCredit100.0100.0100.00.00.0100.0100.0100.00.0100.00.00.00.0100.0100.0100.00.00.00.00.00.0100.0100.0

us-gaap:ProceedsFromLinesOfCredit dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

cwen:DGCSMasterBorrowerLLC, cwen:DGCSMasterBorrowerLLCFinancingArrangement, us-gaap:LetterOfCredit


Proceeds
Period End2020-11-02
Value30
Percentage of ProceedsFromLinesOfCredit0.0

cwen:DGCSMasterBorrowerLLC, cwen:DGCSMasterBorrowerLLCFinancingArrangement, us-gaap:LoansPayable


Proceeds
Period End2020-11-02
Value467
Percentage of ProceedsFromLinesOfCredit0.0

cwen:NIMHSolarLLC, cwen:NIMHSolarLLCFinancingArrangement, us-gaap:LetterOfCredit


Proceeds
Period End2020-09-30
Value16
Percentage of ProceedsFromLinesOfCredit0.0

cwen:NIMHSolarLLC, cwen:NIMHSolarLLCFinancingArrangement, us-gaap:LoansPayable


Proceeds
Period End2020-09-30
Value193
Percentage of ProceedsFromLinesOfCredit0.0

cwen:UtahSolarHoldingsLLC, cwen:UtahSolarHoldingsDue2036, us-gaap:LetterOfCredit


Proceeds
Period End2020-09-01
Value16
Percentage of ProceedsFromLinesOfCredit0.0

cwen:UtahSolarHoldingsLLC, cwen:UtahSolarHoldingsDue2036, us-gaap:NotesPayableOtherPayables


Proceeds
Period End2020-09-01
Value296
Percentage of ProceedsFromLinesOfCredit0.0

us-gaap:ProceedsFromLinesOfCredit dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

cwen:DGCSMasterBorrowerLLC, cwen:DGCSMasterBorrowerLLCFinancingArrangement, us-gaap:LetterOfCredit, us-gaap:SubsequentEvent


Proceeds
Period End2020-11-02
Value30
Percentage of ProceedsFromLinesOfCredit0.0

cwen:DGCSMasterBorrowerLLC, cwen:DGCSMasterBorrowerLLCFinancingArrangement, us-gaap:LoansPayable, us-gaap:SubsequentEvent


Proceeds
Period End2020-11-02
Value467
Percentage of ProceedsFromLinesOfCredit0.0

us-gaap:ProceedsFromLinesOfCredit us-gaap:DebtInstrument

cwen:ClearwayEnergyLLCAndClearwayEnergyOperatingLLCRevolvingCreditFacility


Proceeds
Period End2021-09-302020-12-312020-09-30
Value770.00.0
Percentage of ProceedsFromLinesOfCredit100.00.00.0

us-gaap:ProceedsFromMinorityShareholders

us-gaap:ProceedsFromMinorityShareholders


Proceeds
Period End2021-09-302021-01-122020-12-312020-09-302020-06-302020-03-312019-03-312018-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-14.0210100-7.00.01541930-2.0-1.0-2.010.03.00.01190.01900.0
Percentage of ProceedsFromMinorityShareholders100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.00.0

us-gaap:ProceedsFromMinorityShareholders cwen:AssetAcquisition

cwen:RattlesnakeTEHoldcoLLC


Proceeds
Period End2021-01-12
Value210
Percentage of ProceedsFromMinorityShareholders100.0

us-gaap:ProceedsFromMinorityShareholders us-gaap:CounterpartyName

cwen:CEG


Proceeds
Period End2021-01-12
Value103
Percentage of ProceedsFromMinorityShareholders49.0

cwen:TaxEquityInvestors


Proceeds
Period End2021-01-12
Value107
Percentage of ProceedsFromMinorityShareholders51.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-09-302021-06-302021-03-31
Value-1.0-4.013
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0

us-gaap:ProceedsFromPaymentsToMinorityShareholders

us-gaap:ProceedsFromPaymentsToMinorityShareholders


Proceeds
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value229-7.00.0154-4.0-1.064300.0-2.01.014-2.0-1.0-2.010.0
Percentage of ProceedsFromPaymentsToMinorityShareholders100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfProductiveAssets

us-gaap:ProceedsFromSaleOfProductiveAssets


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value0.00.075150.00.0
Percentage of ProceedsFromSaleOfProductiveAssets0.00.0100.0100.00.00.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterest


Reclassification
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-06-30
Value-3.0-2.0-2.013-2.0-1.0-2.0312.014-3.02.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty

cwen:CEG


Related
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value3.04.03.03.02.02.02.01.02.0
Percentage of RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty100.0100.0100.0100.0100.0100.0100.0100.0100.0

cwen:RENOM


Related
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-30
Value13141310.09.09.09.09.08.09.07.08.07.08.06.05.0
Percentage of RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty433.3350.0433.30.0300.0450.0450.00.0400.0900.0350.00.00.00.00.00.0

us-gaap:RepaymentsOfDebt dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:RepaymentsOfDebt

cwen:Alpine, cwen:ProjectLevelDebt, us-gaap:LoansPayable


Repayments
Period End2020-09-30
Value117
Percentage of RepaymentsOfDebt100.0

cwen:Blythe, cwen:ProjectLevelDebt, us-gaap:LoansPayable


Repayments
Period End2020-09-30
Value14
Percentage of RepaymentsOfDebt12.0

cwen:Roadrunner, cwen:ProjectLevelDebt, us-gaap:LoansPayable


Repayments
Period End2020-09-30
Value27
Percentage of RepaymentsOfDebt23.1

cwen:UtahSolarHoldingsLLC, cwen:UtahSolarHoldingsDue2036, us-gaap:NotesPayableOtherPayables


Repayments
Period End2020-09-01
Value247
Percentage of RepaymentsOfDebt0.0

us-gaap:RepaymentsOfDebt us-gaap:DebtInstrument

cwen:ChestnutBorrowerLLC


Repayments
Period End2020-11-02
Value107
Percentage of RepaymentsOfDebt0.0

cwen:DGPV4BorrowerLLC


Repayments
Period End2020-11-02
Value92
Percentage of RepaymentsOfDebt0.0

cwen:PumaClassBLLC


Repayments
Period End2020-11-02
Value73
Percentage of RepaymentsOfDebt0.0

cwen:RattlesnakeClassBLLCCreditFacility


Repayments
Period End2021-01-12
Value176
Percentage of RepaymentsOfDebt0.0

cwen:RenewSolarCS4BorrowerLLC


Repayments
Period End2020-11-02
Value102
Percentage of RepaymentsOfDebt0.0

cwen:TapestryWindLLCduein2031


Repayments
Period End2021-03-10
Value53
Percentage of RepaymentsOfDebt0.0

us-gaap:RepaymentsOfDebt us-gaap:DebtInstrument, us-gaap:SubsequentEventType

cwen:ChestnutBorrowerLLC, us-gaap:SubsequentEvent


Repayments
Period End2020-11-02
Value107
Percentage of RepaymentsOfDebt0.0

cwen:ClearwayEnergyLLCAndClearwayEnergyOperatingLLCRevolvingCreditFacility, us-gaap:SubsequentEvent


Repayments
Period End2021-10-312021-07-31
Value3267
Percentage of RepaymentsOfDebt0.00.0

cwen:DGPV4BorrowerLLC, us-gaap:SubsequentEvent


Repayments
Period End2020-11-02
Value92
Percentage of RepaymentsOfDebt0.0

cwen:PumaClassBLLC, us-gaap:SubsequentEvent


Repayments
Period End2020-11-02
Value73
Percentage of RepaymentsOfDebt0.0

cwen:RenewSolarCS4BorrowerLLC, us-gaap:SubsequentEvent


Repayments
Period End2020-11-02
Value102
Percentage of RepaymentsOfDebt0.0

us-gaap:RepaymentsOfLinesOfCredit

us-gaap:RepaymentsOfLinesOfCredit


Repayments
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value67631700.00.01300.00.00.00.00.00.00.00.03188.040
Percentage of RepaymentsOfLinesOfCredit100.0100.0100.00.00.0100.00.00.00.00.00.00.00.00.0100.0100.0100.0

us-gaap:RepaymentsOfLinesOfCredit us-gaap:DebtInstrument

cwen:ClearwayEnergyLLCAndClearwayEnergyOperatingLLCRevolvingCreditFacility


Repayments
Period End2021-09-302020-12-312020-09-30
Value670.00.0
Percentage of RepaymentsOfLinesOfCredit100.00.00.0

us-gaap:StockIssuedDuringPeriodValueAcquisitions

us-gaap:StockIssuedDuringPeriodValueAcquisitions


Stock
Period End2021-06-30
Value1.0
Percentage of StockIssuedDuringPeriodValueAcquisitions100.0

us-gaap:StockIssuedDuringPeriodValueAcquisitions cwen:AssetAcquisition

cwen:AquaClienteAcquisition


Stock
Period End2021-03-31
Value273
Percentage of StockIssuedDuringPeriodValueAcquisitions0.0

us-gaap:StockIssuedDuringPeriodValueAcquisitions cwen:AssetAcquisition, us-gaap:StatementEquityComponents

cwen:AquaClienteAcquisition, us-gaap:NoncontrollingInterest


Stock
Period End2021-03-31
Value273
Percentage of StockIssuedDuringPeriodValueAcquisitions0.0

us-gaap:StockIssuedDuringPeriodValueAcquisitions us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-30
Value1.0
Percentage of StockIssuedDuringPeriodValueAcquisitions100.0

us-gaap:SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest us-gaap:Ownership

us-gaap:SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest

cwen:AguaCaliente


Subsidiary
Period End2021-02-03
Value51.0
Percentage of SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest100.0

us-gaap:SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest us-gaap:Ownership, us-gaap:SubsequentEventType

cwen:AguaCaliente, us-gaap:SubsequentEvent


Subsidiary
Period End2021-02-03
Value51.0
Percentage of SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest100.0

us-gaap:UnrealizedGainLossOnDerivatives

us-gaap:UnrealizedGainLossOnDerivatives


Unrealized
Period End2021-09-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312013-07-22
Value3.0118.04.0-12.0-1.05.0-2.06.07.01719
Percentage of UnrealizedGainLossOnDerivatives100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrealizedGainLossOnDerivatives us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:InterestRateContract, us-gaap:InterestExpense


Unrealized
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value6.0-11.0471539-13.0-79.017-28.0-36.0-18.0-25.09.07.0245.0-7.0112.0-5.0-2.02.07.03.0-6.03112-16.00.0-3.03.0
Percentage of UnrealizedGainLossOnDerivatives200.00.0427.30.0487.5-325.0658.30.02800.0-720.0900.00.0150.0100.0141.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:UnrealizedGainLossOnDerivatives us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Unrealized
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-03-31
Value-37.0-33.0-24.0-7.016-3.0-5.00.0
Percentage of UnrealizedGainLossOnDerivatives-1233.30.0-218.20.0200.0-75.041.7-0.0

us-gaap:UnrealizedGainLossOnDerivatives us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Unrealized
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1.01.04.04.02.0-6.0-1.03.0-1.03.03.08.0
Percentage of UnrealizedGainLossOnDerivatives33.30.036.450.050.050.0100.060.050.050.042.947.1

us-gaap:NoncontrollingInterest


Unrealized
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2.0-1.07.04.02.0-6.00.02.0-1.03.04.09.0
Percentage of UnrealizedGainLossOnDerivatives66.70.063.650.050.050.0-0.040.050.050.057.152.9

us-gaap:VariableInterestEntityOwnershipPercentage us-gaap:ConsolidatedEntities, us-gaap:SubsequentEventType

us-gaap:VariableInterestEntityOwnershipPercentage

cwen:AguaCalienteBorrower2, us-gaap:SubsequentEvent


Variable
Period End2021-02-03
Value51.0
Percentage of VariableInterestEntityOwnershipPercentage100.0

us-gaap:VariableLeaseCost

us-gaap:VariableLeaseCost


Variable
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2000000.02000000.03000000.02000000.0-2000000.03000000.03000000.04000000.0
Percentage of VariableLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0

cwen:ATMProgramAvailableForIssuance

cwen:ATMProgramAvailableForIssuance


A
Period End2020-12-312020-09-30
Value126129
Percentage of ATMProgramAvailableForIssuance100.0100.0

cwen:AccumulatedOtherComprehensiveIncomeLossCumulativeChangeInGainLossFromCashFlowHedgesTaxAmount

cwen:AccumulatedOtherComprehensiveIncomeLossCumulativeChangeInGainLossFromCashFlowHedgesTaxAmount


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.06.07.09.016
Percentage of AccumulatedOtherComprehensiveIncomeLossCumulativeChangeInGainLossFromCashFlowHedgesTaxAmount100.0100.0100.0100.0100.0

cwen:AssetAcquisitionPercentageEquityInterestsAcquired cwen:AssetAcquisition

cwen:AssetAcquisitionPercentageEquityInterestsAcquired

cwen:AguaCaliente


Asset
Period End2021-02-03
Value35.0
Percentage of AssetAcquisitionPercentageEquityInterestsAcquired100.0

cwen:BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedLiabilitiesOther

cwen:BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedLiabilitiesOther


Business
Period End2020-11-20
Value17
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedLiabilitiesOther100.0

cwen:BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedLiabilitiesOther us-gaap:BusinessAcquisition

cwen:RosieTargetCoLLC


Business
Period End2020-12-21
Value11
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedLiabilitiesOther0.0

cwen:CapitalExpenditures

cwen:CapitalExpenditures


Capital
Period End2020-12-312019-12-312018-12-312017-12-31
Value10622368212
Percentage of CapitalExpenditures100.0100.0100.0100.0

cwen:CapitalExpenditures us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cwen:ConventionalGeneration


Capital
Period End2020-12-312019-12-312018-12-31
Value124.014
Percentage of CapitalExpenditures11.31.820.6

us-gaap:OperatingSegments, cwen:Renewables


Capital
Period End2020-12-312019-12-312018-12-31
Value4418526
Percentage of CapitalExpenditures41.583.038.2

us-gaap:OperatingSegments, cwen:Thermal


Capital
Period End2020-12-312019-12-312018-12-31
Value503428
Percentage of CapitalExpenditures47.215.241.2

cwen:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsTax

cwen:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsTax


Cash
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-03-312019-09-302019-03-312018-09-30
Value3000000.03000000.03000000.04000000.04000000.0-3000000.03000000.0-3000000.03000000.0
Percentage of CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

cwen:DebtInstrumentRepurchasedFaceAmountOptionallyExercisedRemainingPrincipalNotValidlyTenderedAndPurchasedInTenderOffer us-gaap:DebtInstrument

cwen:DebtInstrumentRepurchasedFaceAmountOptionallyExercisedRemainingPrincipalNotValidlyTenderedAndPurchasedInTenderOffer

cwen:A5.75SeniorNotesdue2025


Debt
Period End2021-03-17
Value183
Percentage of DebtInstrumentRepurchasedFaceAmountOptionallyExercisedRemainingPrincipalNotValidlyTenderedAndPurchasedInTenderOffer100.0

cwen:DebtInstrumentRepurchasedFaceAmountOptionallyExercisedRemainingPrincipalNotValidlyTenderedAndPurchasedInTenderOffer us-gaap:DebtInstrument, us-gaap:SubsequentEventType

cwen:A5.00SeniorNotesduein2026, us-gaap:SubsequentEvent


Debt
Period End2021-10-24
Value227
Percentage of DebtInstrumentRepurchasedFaceAmountOptionallyExercisedRemainingPrincipalNotValidlyTenderedAndPurchasedInTenderOffer0.0

cwen:DebtInstrumentRepurchasedFaceAmountSubjectToGuaranteedDeliveryProcedures us-gaap:DebtInstrument

cwen:DebtInstrumentRepurchasedFaceAmountSubjectToGuaranteedDeliveryProcedures

cwen:A5.75SeniorNotesdue2025


Debt
Period End2021-03-11
Value6000000.0
Percentage of DebtInstrumentRepurchasedFaceAmountSubjectToGuaranteedDeliveryProcedures100.0

cwen:DeferredTaxAssetsInterestExpenseDisallowedCarryforwardinvestmentsinProjects

cwen:DeferredTaxAssetsInterestExpenseDisallowedCarryforwardinvestmentsinProjects


Deferred
Period End2020-12-312019-12-312018-12-31
Value115028
Percentage of DeferredTaxAssetsInterestExpenseDisallowedCarryforwardinvestmentsinProjects100.0100.0100.0

cwen:DeferredTaxAssetsNetExcludingValuationAllowance

cwen:DeferredTaxAssetsNetExcludingValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value1049257128
Percentage of DeferredTaxAssetsNetExcludingValuationAllowance100.0100.0100.0100.0

cwen:DerivativeAssetFairValueAmountOffsetAgainstCollateralNetOfDerivativeLiabilityFairValueAmountOffsetAgainstCollateral

cwen:DerivativeAssetFairValueAmountOffsetAgainstCollateralNetOfDerivativeLiabilityFairValueAmountOffsetAgainstCollateral


Derivative
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-209.0-185.0-136.0-172.0-186.0-233.0-189.0-92.0-109.0-79.0-41.0-10.021-47.0
Percentage of DerivativeAssetFairValueAmountOffsetAgainstCollateralNetOfDerivativeLiabilityFairValueAmountOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cwen:DerivativeAssetFairValueAmountOffsetAgainstCollateralNetOfDerivativeLiabilityFairValueAmountOffsetAgainstCollateral us-gaap:DerivativeInstrumentRisk

us-gaap:CommodityContract


Derivative
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302017-12-31
Value-136.0-103.0-66.0-44.0-17.0-17.0-15.0-10.0-8.0-8.0-7.0-1.00.0
Percentage of DerivativeAssetFairValueAmountOffsetAgainstCollateralNetOfDerivativeLiabilityFairValueAmountOffsetAgainstCollateral65.155.748.525.69.17.37.910.97.310.117.1-4.8-0.0

us-gaap:InterestRateContract


Derivative
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-73.0-82.0-70.0-128.0-169.0-216.0-174.0-82.0-101.0-71.0-34.0-10.022-47.0
Percentage of DerivativeAssetFairValueAmountOffsetAgainstCollateralNetOfDerivativeLiabilityFairValueAmountOffsetAgainstCollateral34.944.351.574.490.992.792.189.192.789.982.9100.0104.8100.0

cwen:DistributionReserveAccountsDistributionsPaid us-gaap:SubsequentEventType

cwen:DistributionReserveAccountsDistributionsPaid

us-gaap:SubsequentEvent


Distribution
Period End2020-10-31
Value34
Percentage of DistributionReserveAccountsDistributionsPaid100.0

cwen:EquityMethodInvestmentAdditionalOwnershipAcquired us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:SubsequentEventType

cwen:EquityMethodInvestmentAdditionalOwnershipAcquired

cwen:AguaCalienteBorrower2, us-gaap:SubsequentEvent


Equity
Period End2021-02-03
Value35.0
Percentage of EquityMethodInvestmentAdditionalOwnershipAcquired100.0

cwen:FairValueAssetsMeasuredOnRecurringBasisValuationTechniquesImpactOfCreditReserveToFairValue

cwen:FairValueAssetsMeasuredOnRecurringBasisValuationTechniquesImpactOfCreditReserveToFairValue


Fair
Period End2021-09-302021-06-302021-03-312020-09-302020-06-30
Value10000000.09000000.04000000.010000000.06000000.0
Percentage of FairValueAssetsMeasuredOnRecurringBasisValuationTechniquesImpactOfCreditReserveToFairValue100.0100.0100.0100.0100.0

cwen:FairValueofGrossDerivativeAssetsLiabilitiesNet

cwen:FairValueofGrossDerivativeAssetsLiabilitiesNet


Fair
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302017-12-31
Value-209.0-185.0-136.0-172.0-186.0-233.0-189.0-92.0-79.0-41.0-10.021-47.0
Percentage of FairValueofGrossDerivativeAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cwen:FairValueofGrossDerivativeAssetsLiabilitiesNet us-gaap:DerivativeInstrumentRisk

us-gaap:CommodityContract


Fair
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-09-302017-12-31
Value-136.0-103.0-66.0-44.0-17.0-18.0-15.0-9.0-8.0-7.0-1.00.0
Percentage of FairValueofGrossDerivativeAssetsLiabilitiesNet65.155.748.525.69.17.77.99.810.117.1-4.8-0.0

us-gaap:InterestRateContract


Fair
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302017-12-31
Value-73.0-82.0-70.0-128.0-169.0-215.0-174.0-83.0-71.0-34.0-10.022-47.0
Percentage of FairValueofGrossDerivativeAssetsLiabilitiesNet34.944.351.574.490.992.392.190.289.982.9100.0104.8100.0

cwen:IncomeAllocationPercentage dei:LegalEntity, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

cwen:IncomeAllocationPercentage

cwen:RepoweringPartnershipIILLC, cwen:CWSPWildoradoElbowHoldingLLC


Income
Period End2020-12-312020-06-302020-03-31
Value39.860.39860.3986
Percentage of IncomeAllocationPercentage100.0100.0100.0

cwen:RepoweringPartnershipIILLC, cwen:WindTEHoldcoLLC


Income
Period End2020-12-312020-06-302020-03-31
Value60.140.60140.6014
Percentage of IncomeAllocationPercentage150.9150.9150.9

cwen:IncomeAllocationPercentage us-gaap:ConsolidatedEntities

cwen:LighthouseRenewableHoldcoLLC


Income
Period End2020-12-31
Value50.01
Percentage of IncomeAllocationPercentage125.5

cwen:RosieTargetCoLLC


Income
Period End2020-12-21
Value50.0
Percentage of IncomeAllocationPercentage0.0

cwen:IncomeAllocationPercentage us-gaap:CounterpartyName, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:StatementEquityComponents

cwen:CEG, cwen:PinnacleRepoweringPartnershipHoldCoLLC, us-gaap:NoncontrollingInterest


Income
Period End2021-03-31
Value15.0
Percentage of IncomeAllocationPercentage0.0

cwen:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour

cwen:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour


Lessee
Period End2020-09-30
Value332
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour100.0

cwen:NumberOfSolarProjects us-gaap:ConsolidatedEntities

cwen:NumberOfSolarProjects

cwen:DGPVHoldco3


Number
Period End2020-11-02
Value172.0
Percentage of NumberOfSolarProjects100.0

cwen:NumberOfSolarProjects us-gaap:ConsolidatedEntities, us-gaap:SubsequentEventType

cwen:DGPVHoldco3, us-gaap:SubsequentEvent


Number
Period End2020-11-02
Value172.0
Percentage of NumberOfSolarProjects100.0

cwen:PercentOfOtherFinancialInstrumentLiabilitiesUsingLevel3FairValueInputs us-gaap:FinancialInstrument

cwen:PercentOfOtherFinancialInstrumentLiabilitiesUsingLevel3FairValueInputs

cwen:OtherFinancialInstrument


Percent
Period End2020-12-31
Value100.0
Percentage of PercentOfOtherFinancialInstrumentLiabilitiesUsingLevel3FairValueInputs100.0

us-gaap:EnergyRelatedDerivative


Percent
Period End2020-12-31
Value25.0
Percentage of PercentOfOtherFinancialInstrumentLiabilitiesUsingLevel3FairValueInputs25.0

cwen:PercentageOfOwnership us-gaap:CounterpartyName, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

cwen:PercentageOfOwnership

cwen:ClearwayRenewLLC, cwen:OahuSolarPartnership, srt:AffiliatedEntity


Percentage
Period End2020-12-312019-12-31
Value80.00.8
Percentage of PercentageOfOwnership100.0100.0

cwen:PercentageofCashAvailableforDistributions

cwen:PercentageofCashAvailableforDistributions


Percentageof
Period End2020-12-312019-12-312019-06-302019-03-31
Value95.00.950.950.95
Percentage of PercentageofCashAvailableforDistributions100.0100.0100.0100.0

cwen:PercentageofCashAvailableforDistributions cwen:Period, dei:LegalEntity

cwen:PostFlipPoint, cwen:AltaXandXITEHoldco


Percentageof
Period End2020-12-312019-12-312018-12-31
Value97.120.97120.9712
Percentage of PercentageofCashAvailableforDistributions102.2102.20.0

cwen:PostFlipPoint, cwen:SpringCanyon


Percentageof
Period End2020-12-312019-12-312018-12-31
Value95.00.950.95
Percentage of PercentageofCashAvailableforDistributions100.0100.00.0

cwen:PreFlipPoint, cwen:SpringCanyon


Percentageof
Period End2020-12-312019-12-312018-12-31
Value65.190.65190.6519
Percentage of PercentageofCashAvailableforDistributions68.668.60.0

cwen:SecondYearthroughFlipPoint, cwen:AltaXandXITEHoldco


Percentageof
Period End2020-12-312019-12-312018-12-31
Value94.340.94340.9434
Percentage of PercentageofCashAvailableforDistributions99.399.30.0

cwen:PercentageofCashAvailableforDistributions cwen:Period, dei:LegalEntity, us-gaap:OtherOwnershipInterestsByName

cwen:PostFlipPoint, cwen:SpringCanyon, cwen:FinancialInstitutions


Percentageof
Period End2020-12-312019-12-312018-12-31
Value5.00.050.05
Percentage of PercentageofCashAvailableforDistributions5.35.30.0

cwen:PreFlipPoint, cwen:SpringCanyon, cwen:FinancialInstitutions


Percentageof
Period End2020-12-312019-12-312018-12-31
Value34.810.34810.3481
Percentage of PercentageofCashAvailableforDistributions36.636.60.0

cwen:PredeterminedDateThroughFlipPointIfFlipHasNotOccured, cwen:AltaXandXITEHoldco, cwen:FinancialInstitutions


Percentageof
Period End2020-12-312019-12-312018-12-31
Value100.01.01.0
Percentage of PercentageofCashAvailableforDistributions105.3105.30.0

cwen:PercentageofCashAvailableforDistributions us-gaap:RelatedPartyTransactionsByRelatedParty

srt:AffiliatedEntity


Percentageof
Period End2020-12-312019-12-312019-06-302019-03-31
Value5.00.050.050.05
Percentage of PercentageofCashAvailableforDistributions5.35.35.35.3

cwen:PercentageofCashAvailableforDistributions us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

cwen:UtahPortfolio


Percentageof
Period End2020-12-312019-12-312018-12-312018-09-30
Value50.00.50.50.5
Percentage of PercentageofCashAvailableforDistributions52.652.60.00.0

cwen:PercentofDerivativeLiabilitiesUsingLevel3FairValueInputs

cwen:PercentofDerivativeLiabilitiesUsingLevel3FairValueInputs


Percentof
Period End2021-09-302021-06-302021-03-312020-09-30
Value64.054.046.09.0
Percentage of PercentofDerivativeLiabilitiesUsingLevel3FairValueInputs100.0100.0100.0100.0

cwen:Percentoffacevalue us-gaap:DebtInstrument

cwen:Percentoffacevalue

cwen:A5.375SeniorNotesduein2024


Percentoffacevalueus-gaap:
Period End2020-12-312019-12-31
Value82.40.824
Percentage of Percentoffacevalue100.0100.0

cwen:PowerGenerationCapacityMegawatts cwen:PowerGenerationFacilitiesByType

cwen:PowerGenerationCapacityMegawatts

cwen:ConventionalGenerationUtilityScaleSolarDistributedSolarandWind


Power
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-30
Value4700.04700.04200.04200.06201.05991.05875.05875.05272.05272.05272.05272.0
Percentage of PowerGenerationCapacityMegawatts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cwen:Thermal


Power
Period End2020-09-302020-06-302020-03-312019-12-312018-12-312018-09-30
Value39.036.036.0139.0133.0133.0
Percentage of PowerGenerationCapacityMegawatts0.60.60.62.42.52.5

cwen:PowerGenerationCapacityMegawatts dei:LegalEntity

cwen:LangfordWindProject


Power
Period End2020-11-20
Value160.0
Percentage of PowerGenerationCapacityMegawatts0.0

cwen:PowerGenerationCapacityMegawatts us-gaap:BusinessAcquisition

cwen:RosieTargetCoLLC


Power
Period End2020-12-21
Value192.0
Percentage of PowerGenerationCapacityMegawatts0.0

cwen:PowerGenerationCapacityMegawatts us-gaap:ConsolidatedEntities

cwen:DGPVHoldco3


Power
Period End2020-12-312020-11-022020-09-302020-06-30
Value113.0286.0113.0113.0
Percentage of PowerGenerationCapacityMegawatts2.70.01.81.9

cwen:PowerGenerationCapacityMegawatts us-gaap:ConsolidatedEntities, us-gaap:SubsequentEventType

cwen:DGPVHoldco3, us-gaap:SubsequentEvent


Power
Period End2020-11-02
Value286.0
Percentage of PowerGenerationCapacityMegawatts0.0

cwen:PowerGenerationCapacityMegawatts us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

cwen:MesquiteStarHoldCoLLC


Power
Period End2020-09-01
Value419.0
Percentage of PowerGenerationCapacityMegawatts0.0

cwen:PowerPurchaseAgreementRefundableTaxCreditAggregateAmountUtilized us-gaap:BalanceSheetLocation, us-gaap:IncomeTaxAuthority

cwen:PowerPurchaseAgreementRefundableTaxCreditAggregateAmountUtilized

us-gaap:PrepaidExpensesAndOtherCurrentAssets, us-gaap:StateAndLocalJurisdiction


Power
Period End2021-09-30
Value13
Percentage of PowerPurchaseAgreementRefundableTaxCreditAggregateAmountUtilized100.0

cwen:PrepaidLongTermServiceAgreement

cwen:PrepaidLongTermServiceAgreement


Prepaid
Period End2020-12-312019-12-312018-12-312017-12-31
Value1410.06.024
Percentage of PrepaidLongTermServiceAgreement100.0100.0100.0100.0

cwen:RepaymentOfDebtAcquiredInAssetAcquisition cwen:AssetAcquisition

cwen:RepaymentOfDebtAcquiredInAssetAcquisition

cwen:RattlesnakeTEHoldcoLLC


Repayment
Period End2021-01-12
Value176
Percentage of RepaymentOfDebtAcquiredInAssetAcquisition100.0

cwen:RepaymentOfDebtAcquiredInAssetAcquisition us-gaap:BusinessAcquisition

cwen:RattlesnakeTEHoldcoLLC


Repayment
Period End2021-01-12
Value176
Percentage of RepaymentOfDebtAcquiredInAssetAcquisition100.0

cwen:SteamAndChilledWaterCapacityMegawattsThermalEquivalent cwen:PowerGenerationFacilitiesByType

cwen:SteamAndChilledWaterCapacityMegawattsThermalEquivalent

cwen:Thermal


Steam
Period End2020-09-302020-03-312019-12-312018-12-312018-09-30
Value1456.01530.01530.01385.01392.0
Percentage of SteamAndChilledWaterCapacityMegawattsThermalEquivalent100.0100.0100.0100.0100.0

cwen:TaxableIncomeAllocationPostFlip dei:LegalEntity, us-gaap:OtherOwnershipInterestsByName

cwen:TaxableIncomeAllocationPostFlip

cwen:AltaXandXITEHoldco, cwen:FinancialInstitutions


Taxable
Period End2020-12-312019-12-312018-12-31
Value5.00.050.05
Percentage of TaxableIncomeAllocationPostFlip100.0100.0100.0

cwen:TaxableIncomeAllocationPostFlip us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:CapitalUnitsByClass, us-gaap:OtherOwnershipInterestsByName

cwen:UtahPortfolio, us-gaap:CapitalUnitClassB, cwen:FinancialInstitutions


Taxable
Period End2020-12-312019-12-31
Value50.00.5
Percentage of TaxableIncomeAllocationPostFlip1000.01000.0

cwen:TaxableIncomeAllocationPreFlip dei:LegalEntity, us-gaap:OtherOwnershipInterestsByName

cwen:TaxableIncomeAllocationPreFlip

cwen:AltaXandXITEHoldco, cwen:FinancialInstitutions


Taxable
Period End2020-12-312019-12-312018-12-31
Value99.00.990.99
Percentage of TaxableIncomeAllocationPreFlip100.0100.0100.0

cwen:TaxableIncomeAllocationPreFlip us-gaap:BusinessAcquisition, us-gaap:OtherOwnershipInterestsByName

cwen:November2015DropDownAssets, cwen:FinancialInstitutions


Taxable
Period End2020-12-312019-12-312018-12-31
Value99.00.990.99
Percentage of TaxableIncomeAllocationPreFlip100.0100.0100.0

cwen:TaxableIncomeAllocationPreFlip us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:CapitalUnitsByClass, us-gaap:OtherOwnershipInterestsByName

cwen:UtahPortfolio, us-gaap:CapitalUnitClassB, cwen:FinancialInstitutions


Taxable
Period End2020-12-312019-12-31
Value99.00.99
Percentage of TaxableIncomeAllocationPreFlip100.0100.0

dei:EntityCommonStockSharesOutstanding us-gaap:StatementClassOfStock

dei:EntityCommonStockSharesOutstanding

us-gaap:CommonClassA


Entity
Period End2020-07-312020-04-302020-03-242020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-03-312018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-06-302014-04-302014-02-262013-10-312013-07-31
Value34343434343434343434343434343434343434343434343434342222222222
Percentage of EntityCommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassC


Entity
Period End2020-07-312020-04-302020-03-242020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-03-312018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-31
Value80797978737373737369656464636362626262626262
Percentage of EntityCommonStockSharesOutstanding233.0229.3229.3227.9212.0211.9211.9211.9211.3199.9188.9187.2187.1184.3182.8181.5181.5181.5181.5181.5181.5181.5

us-gaap:AccountsReceivableNet

us-gaap:AccountsReceivableNet


Accounts
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value20320315914315616199116131911041411328295
Percentage of AccountsReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableNet us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:CustomerContracts


Accounts
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value606666573739293437333535292628
Percentage of AccountsReceivableNet29.632.541.539.923.724.229.329.328.236.333.724.822.031.729.5

us-gaap:LeaseAgreements


Accounts
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value143137938611912270829458691061035667
Percentage of AccountsReceivableNet70.467.558.560.176.375.870.770.771.863.766.375.278.068.370.5

us-gaap:AociIncludingPortionAttributableToNoncontrollingInterestTax

us-gaap:AociIncludingPortionAttributableToNoncontrollingInterestTax


Aoci
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302015-09-302015-06-30
Value3.04.0-4.06.07.0-8.06.0-6.0-7.0-5.0-6.0-6.0-16.0-15.0-15.0-29.028-19.010.0
Percentage of AociIncludingPortionAttributableToNoncontrollingInterestTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligation

us-gaap:AssetRetirementObligation


Asset
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value1177567554839186.04.0
Percentage of AssetRetirementObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2020-12-31
Value1.0
Percentage of AssetsFairValueDisclosure100.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2020-12-31
Value29
Percentage of AssetsFairValueDisclosure2900.0

us-gaap:AssetsNet us-gaap:ConsolidatedEntities

us-gaap:AssetsNet

cwen:AltaTEHoldco


Assets
Period End2020-12-31
Value560
Percentage of AssetsNet100.0

cwen:AltaXandXITEHoldco


Assets
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-03-31
Value549557557567573575
Percentage of AssetsNet0.00.00.00.00.00.0

cwen:BuckthornRenewablesLLC


Assets
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value150149147145143141138
Percentage of AssetsNet0.00.00.025.90.00.00.0

cwen:DGPVFunds


Assets
Period End2020-12-31
Value804
Percentage of AssetsNet143.6

cwen:DGPVHoldco3


Assets
Period End2021-09-302021-06-302021-03-312020-09-302020-06-302020-05-29
Value631642645112107104
Percentage of AssetsNet0.00.00.00.00.00.0

cwen:ElbowCreekTEHoldco


Assets
Period End2020-09-302020-06-30
Value1214
Percentage of AssetsNet0.00.0

cwen:KawailoaSolarPartnershipLLC


Assets
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value242324201510.08.0
Percentage of AssetsNet0.00.00.03.60.00.00.0

cwen:LangfordTEPartnershipLLC


Assets
Period End2021-09-302021-06-302021-03-312020-12-31
Value65614429
Percentage of AssetsNet0.00.00.05.2

cwen:LighthouseRenewableHoldcoLLC


Assets
Period End2021-09-302021-06-302021-03-312020-12-31
Value31394963
Percentage of AssetsNet0.00.00.011.2

cwen:OahuSolarPartnership


Assets
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value75737266575248
Percentage of AssetsNet0.00.00.011.80.00.00.0

cwen:OtherConsolidatedVariableInterestEntities


Assets
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value4752647410.010.010.0
Percentage of AssetsNet0.00.00.013.20.00.00.0

cwen:PinnacleRepoweringPartnershipHoldCoLLC


Assets
Period End2021-09-302021-06-302021-03-31
Value-10.02.040
Percentage of AssetsNet0.00.00.0

cwen:RattlesnakeTEHoldcoLLC


Assets
Period End2021-09-302021-06-302021-03-31
Value102108118
Percentage of AssetsNet0.00.00.0

cwen:RosieTargetCoLLC


Assets
Period End2021-09-302021-06-302021-03-312020-12-31
Value36343430
Percentage of AssetsNet0.00.00.05.4

cwen:SpringCanyon


Assets
Period End2020-09-302020-06-302020-03-31
Value514651
Percentage of AssetsNet0.00.00.0

cwen:WildoradoTEHoldco


Assets
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-30
Value108108119120141147
Percentage of AssetsNet0.00.00.021.40.00.0

us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired cwen:PowerGenerationFacilitiesByType, us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired

cwen:WindFarms, cwen:SpringCanyonII


Business
Period End2020-12-31
Value90.1
Percentage of BusinessAcquisitionPercentageOfVotingInterestsAcquired100.0

us-gaap:BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue

us-gaap:BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue


Business
Period End2020-11-20
Value119
Percentage of BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue100.0

us-gaap:BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue us-gaap:BusinessAcquisition

cwen:RosieTargetCoLLC


Business
Period End2020-12-21
Value52
Percentage of BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets

cwen:LangfordHoldingLLC


Business
Period End2020-11-20
Value157
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets100.0

cwen:RosieTargetCoLLC


Business
Period End2020-12-21
Value296
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets

cwen:LangfordHoldingLLC


Business
Period End2020-11-20
Value4.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets100.0

cwen:RosieTargetCoLLC


Business
Period End2020-12-21
Value49
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill

cwen:LangfordHoldingLLC


Business
Period End2020-11-20
Value15
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill100.0

cwen:RosieTargetCoLLC


Business
Period End2020-12-21
Value1.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities


Business
Period End2020-11-202013-12-31
Value171986
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities us-gaap:BusinessAcquisition

cwen:RosieTargetCoLLC


Business
Period End2020-12-21
Value216
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt

cwen:RosieTargetCoLLC


Business
Period End2020-12-21
Value205
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment

cwen:LangfordHoldingLLC


Business
Period End2020-11-20
Value138
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment100.0

cwen:RosieTargetCoLLC


Business
Period End2020-12-21
Value246
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest

cwen:LangfordHoldingLLC


Business
Period End2020-11-20
Value21
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest100.0

cwen:RosieTargetCoLLC


Business
Period End2020-12-21
Value28
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest us-gaap:ConsolidatedEntities

cwen:DGPVHoldco1And2


Business
Period End2020-11-02
Value205
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest0.0

cwen:MesquiteStar


Business
Period End2020-12-21
Value63
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest0.0

us-gaap:DebtInstrumentCarryingAmount

us-gaap:DebtInstrumentCarryingAmount


Debt
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value79148026804170436792680866346858
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:DebtInstrument

cwen:A4.75SeniorNotesdue2028


Debt
Period End2020-12-312019-12-31
Value850600
Percentage of DebtInstrumentCarryingAmount12.18.7

cwen:A475SeniorNotesDue2028


Debt
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value850850850850850850600600
Percentage of DebtInstrumentCarryingAmount10.710.610.612.112.512.59.08.7

cwen:AguaCalienteSolarLLCDue2037


Debt
Period End2021-09-302021-06-302021-03-31
Value700712716
Percentage of DebtInstrumentCarryingAmount8.88.98.9

cwen:AltaRealtyInvestmentsLLCDue2031


Debt
Period End2020-12-312019-12-31
Value2527
Percentage of DebtInstrumentCarryingAmount0.40.4

cwen:AltaWindAssetManagementLLC


Debt
Period End2020-12-312019-12-31
Value1415
Percentage of DebtInstrumentCarryingAmount0.20.2

cwen:AltaWindAssetManagementLLCDue2031


Debt
Period End2021-09-302021-06-302021-03-312020-12-31
Value13141414
Percentage of DebtInstrumentCarryingAmount0.20.20.20.2

cwen:AltaWindIVleasefinancingarrangementdue2034and2035


Debt
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value772772800800816816844844
Percentage of DebtInstrumentCarryingAmount9.89.69.911.412.012.012.712.3

cwen:AltaWindRealtyInvestmentsLLCDue2031


Debt
Period End2021-09-302021-06-302021-03-312020-12-31
Value24252525
Percentage of DebtInstrumentCarryingAmount0.30.30.30.4

cwen:BorregoDue2024And2038


Debt
Period End2021-09-302021-06-302021-03-312020-12-31
Value55575757
Percentage of DebtInstrumentCarryingAmount0.70.70.70.8

cwen:BorregoDue2034And2035


Debt
Period End2020-12-312019-12-31
Value5760
Percentage of DebtInstrumentCarryingAmount0.80.9

cwen:BuckthornSolardue2025


Debt
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value123125126126127128129129
Percentage of DebtInstrumentCarryingAmount1.61.61.61.81.91.91.91.9

cwen:CS4Borrower


Debt
Period End2020-09-302020-06-302019-12-31
Value1031040.0
Percentage of DebtInstrumentCarryingAmount1.51.50.0

cwen:CVSRHoldcodue2037


Debt
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value169169169176176176176182
Percentage of DebtInstrumentCarryingAmount2.12.12.12.52.62.62.72.7

cwen:CarlsbadEnergyHoldings2027


Debt
Period End2020-12-312019-12-31
Value156175
Percentage of DebtInstrumentCarryingAmount2.22.6

cwen:CarlsbadEnergyHoldingsLLCDue2027


Debt
Period End2021-09-302021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value141156156156568582582582
Percentage of DebtInstrumentCarryingAmount1.81.91.92.28.48.58.88.5

cwen:CarlsbadHoldcoDue2038