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  <xsd:element abstract="true" id="cpn_CapitalStructureAbstract" name="CapitalStructureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_CarvilleEnergyCenterMember" name="CarvilleEnergyCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_CashAndCashEquivalentsSubjectToProjectFinanceFacilitiesAndLeaseAgreements" name="CashAndCashEquivalentsSubjectToProjectFinanceFacilitiesAndLeaseAgreements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_CashEquivalentsIncludedInCashAndCashEquivalentsFairValueDisclosure" name="CashEquivalentsIncludedInCashAndCashEquivalentsFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_CashEquivalentsIncludedInRestrictedCashFairValueDisclosure" name="CashEquivalentsIncludedInRestrictedCashFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_CashFlowHedgingAbstract" name="CashFlowHedgingAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_CashPaidDuringPeriodFor" name="CashPaidDuringPeriodFor" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_CdhMember" name="CdhMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_CdhiMember" name="CdhiMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_CollateralPolicyTextBlock" name="CollateralPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_CollateralTableTextBlock" name="CollateralTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_ColumbiaEnergyCenterMember" name="ColumbiaEnergyCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_CommitmentsAndContingenciesLineItems" name="CommitmentsAndContingenciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_CommitmentsAndContingenciesTable" name="CommitmentsAndContingenciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_CommodityExchangeTradedFuturesAndSwapsContractsMember" name="CommodityExchangeTradedFuturesAndSwapsContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_CommodityForwardContractMember" name="CommodityForwardContractMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_CommodityForwardContractsAssetsFairValueDisclosure" name="CommodityForwardContractsAssetsFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_CommodityForwardContractsLiabilitiesFairValueDisclosure" name="CommodityForwardContractsLiabilitiesFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_CommodityFuturesContractsAssetsFairValueDisclosure" name="CommodityFuturesContractsAssetsFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_CommodityFuturesContractsLiabilitiesFairValueDisclosure" name="CommodityFuturesContractsLiabilitiesFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_CommodityMargin" name="CommodityMargin" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cpn_CommodityMarginBroadRiverEnergyCenter" name="CommodityMarginBroadRiverEnergyCenter" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cpn_CommodityMarginRiversideEnergyCenter" name="CommodityMarginRiversideEnergyCenter" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cpn_CommodityMarginforSixSoutheastPowerPlantsSold" name="CommodityMarginforSixSoutheastPowerPlantsSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_CommonStockActivityRollForward" name="CommonStockActivityRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_CommonStockPurchasedfromShareholder" name="CommonStockPurchasedfromShareholder" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="cpn_ConcentrationsOfCreditRiskPolicyTextBlock" name="ConcentrationsOfCreditRiskPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_ConstructionMajorMaintenanceMember" name="ConstructionMajorMaintenanceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_ContractAmortization" name="ContractAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_CorporateRevolvingFacilityMember" name="CorporateRevolvingFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_DebtAbstract" name="DebtAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_DebtCCFCAbstract" name="DebtCCFCAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_DebtExcludingCapitalLeases" name="DebtExcludingCapitalLeases" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_DebtExtinguishmentCostsAndOtherIncomeExpenseNet" name="DebtExtinguishmentCostsAndOtherIncomeExpenseNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_DebtServiceMember" name="DebtServiceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_DecaturEnergyCenterMember" name="DecaturEnergyCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_DefinedContributionAndDefinedBenefitPlansAbstract" name="DefinedContributionAndDefinedBenefitPlansAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_DerivativeAssetFairValueAmountOffsetAgainstCollateralNetOfDerivativeLiabilityFairValueAmountOffsetAgainstCollateral" name="DerivativeAssetFairValueAmountOffsetAgainstCollateralNetOfDerivativeLiabilityFairValueAmountOffsetAgainstCollateral" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_DerivativeCollateralObligationToReturnCashAndLettersOfCreditPostedByCounterparties" name="DerivativeCollateralObligationToReturnCashAndLettersOfCreditPostedByCounterparties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_DerivativeCollateralRightToReclaimCashAndNaturalGasAndPowerPrepaymentsTotal" name="DerivativeCollateralRightToReclaimCashAndNaturalGasAndPowerPrepaymentsTotal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_DerivativeCollateralRightToReclaimCashNet" name="DerivativeCollateralRightToReclaimCashNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_DerivativeFairValueAmountNotOffsetAgainstCollateralNet" name="DerivativeFairValueAmountNotOffsetAgainstCollateralNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_DerivativeInstrumentsAbstract" name="DerivativeInstrumentsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_DirectorPlanMember" name="DirectorPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextualsAbstract" name="DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_DistributionsfromEquityMethodInvestments" name="DistributionsfromEquityMethodInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_EarlyRedemptionAmountMember" name="EarlyRedemptionAmountMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_EarningsLossPerShareAbstract" name="EarningsLossPerShareAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_EastMember" name="EastMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_EffectiveIncomeTaxRateReconciliationAxis" name="EffectiveIncomeTaxRateReconciliationAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceDueToForeignTaxes" name="EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceDueToForeignTaxes" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefits" name="EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefits" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_EffectiveIncomeTaxRateReconciliationDomain" name="EffectiveIncomeTaxRateReconciliationDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_EffectiveIncomeTaxRateReconciliationIntraperiodAllocation" name="EffectiveIncomeTaxRateReconciliationIntraperiodAllocation" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedCompensation" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedCompensation" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_EquityMethodInvestmentSummarizedFinancialInformationCashAndCashEquivalents" name="EquityMethodInvestmentSummarizedFinancialInformationCashAndCashEquivalents" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_EquityMethodInvestmentSummarizedFinancialInformationCurrentMaturitiesOfLongTermDebt" name="EquityMethodInvestmentSummarizedFinancialInformationCurrentMaturitiesOfLongTermDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_EquityMethodInvestmentSummarizedFinancialInformationDebt" name="EquityMethodInvestmentSummarizedFinancialInformationDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_EquityMethodInvestmentSummarizedFinancialInformationInterestIncomeExpense" name="EquityMethodInvestmentSummarizedFinancialInformationInterestIncomeExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cpn_EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt" name="EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_EquityMethodInvestmentSummarizedFinancialInformationLongTermDerivativeLiabilities" name="EquityMethodInvestmentSummarizedFinancialInformationLongTermDerivativeLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_EquityMethodInvestmentSummarizedFinancialInformationOtherIncomeExpenseNet" name="EquityMethodInvestmentSummarizedFinancialInformationOtherIncomeExpenseNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cpn_EquityMethodInvestmentSummarizedFinancialInformationPropertyPlantAndEquipmentNet" name="EquityMethodInvestmentSummarizedFinancialInformationPropertyPlantAndEquipmentNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_EquityMethodInvestmentsIncludedOnBalanceSheetAbstract" name="EquityMethodInvestmentsIncludedOnBalanceSheetAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_EquityPlanMember" name="EquityPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_ExcessAmountOfAssetSalesRequiringMandatoryPrepayments" name="ExcessAmountOfAssetSalesRequiringMandatoryPrepayments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_Expirationdate2015through2034Member" name="Expirationdate2015through2034Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_Expirationdate2023through2033Member" name="Expirationdate2023through2033Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_Expirationdate2026and2034Member" name="Expirationdate2026and2034Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_FairValueAssetsMeasuredWithUnobservableInputsOnRecurringBasisGainLossIncludedInOperatingRevenue" name="FairValueAssetsMeasuredWithUnobservableInputsOnRecurringBasisGainLossIncludedInOperatingRevenue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cpn_FairValueAssetsMeasuredwithUnobservableInputsonRecurringBasisGainLossIncludedInFuelAndPurchasedEnergyExpense" name="FairValueAssetsMeasuredwithUnobservableInputsonRecurringBasisGainLossIncludedInFuelAndPurchasedEnergyExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cpn_FairValueInputsQuantitativeInformation" name="FairValueInputsQuantitativeInformation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_FairValueMeasurementsAbstract" name="FairValueMeasurementsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_FederalDomain" name="FederalDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_FirstLienNotes2019Member" name="FirstLienNotes2019Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_FirstLienNotes2020Member" name="FirstLienNotes2020Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_FirstLienNotes2021Member" name="FirstLienNotes2021Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_FirstLienNotes2023Member" name="FirstLienNotes2023Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_FirstLienNotesTableTextBlock" name="FirstLienNotesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_FirstLienTermLoan2019Member" name="FirstLienTermLoan2019Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_FirstLienTermLoans2018Member" name="FirstLienTermLoans2018Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_FirstLienTermLoansMember" name="FirstLienTermLoansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_FirstLienTermLoansTableTextBlock" name="FirstLienTermLoansTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_FirstPriorityLiensUnderInterestRateSwapAgreements" name="FirstPriorityLiensUnderInterestRateSwapAgreements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_FirstPriorityLiensUnderPowerAndNaturalGasAgreements" name="FirstPriorityLiensUnderPowerAndNaturalGasAgreements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_ForeRiverEnergyCenterMember" name="ForeRiverEnergyCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_FreestoneEnergyCenterMember" name="FreestoneEnergyCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_FuelAndPurchasedEnergyExpensePolicyTextBlock" name="FuelAndPurchasedEnergyExpensePolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_GainLossOnInterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsRealized" name="GainLossOnInterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsRealized" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cpn_GainLossOnInterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsUnrealized" name="GainLossOnInterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsUnrealized" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_GeographyConsolidationandEliminationMember" name="GeographyConsolidationandEliminationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_GeothermalPropertiesGross" name="GeothermalPropertiesGross" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_GeothermalPropertiesGrossMember" name="GeothermalPropertiesGrossMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_GilroyNotePayableMember" name="GilroyNotePayableMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_GrantsinOptionGrantswithThreeYearCliffVesting" name="GrantsinOptionGrantswithThreeYearCliffVesting" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_GreenfieldMember" name="GreenfieldMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_GreenleafMember" name="GreenleafMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_GuadalupeEnergyCenterMember" name="GuadalupeEnergyCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_GuadalupeExpansionCapacityMember" name="GuadalupeExpansionCapacityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_GuaranteeObligationsBalanceOnFifthAnniversary" name="GuaranteeObligationsBalanceOnFifthAnniversary" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_GuaranteeObligationsBalanceOnFirstAnniversary" name="GuaranteeObligationsBalanceOnFirstAnniversary" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_GuaranteeObligationsBalanceOnFourthAnniversary" name="GuaranteeObligationsBalanceOnFourthAnniversary" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_GuaranteeObligationsBalanceOnSecondAnniversary" name="GuaranteeObligationsBalanceOnSecondAnniversary" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_GuaranteeObligationsBalanceOnThirdAnniversary" name="GuaranteeObligationsBalanceOnThirdAnniversary" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_GuaranteeObligationsDueAfterFiveYears" name="GuaranteeObligationsDueAfterFiveYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_GuranteeObligationsTotalMember" name="GuranteeObligationsTotalMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_HidalgoEnergyCenterMember" name="HidalgoEnergyCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_HogBayouEnergyCenterMember" name="HogBayouEnergyCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_IncomeLossBeforeIncomeTaxesAndDiscontinuedOperationsWithNoncontrollingInterest" name="IncomeLossBeforeIncomeTaxesAndDiscontinuedOperationsWithNoncontrollingInterest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cpn_IncomeLossBeforeReorganizationItemsIncomeTaxesAndDiscontinuedOperations" name="IncomeLossBeforeReorganizationItemsIncomeTaxesAndDiscontinuedOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_IncomeLossFromUnconsolidatedInvestmentsInPowerPlantsAndDistributionsLineItems" name="IncomeLossFromUnconsolidatedInvestmentsInPowerPlantsAndDistributionsLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_IncomeTaxDisclosureTextualsAbstract" name="IncomeTaxDisclosureTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_IncomeTaxExpenseBenefitIntraperiodTaxAllocationAxis" name="IncomeTaxExpenseBenefitIntraperiodTaxAllocationAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_IncomeTaxLineItems" name="IncomeTaxLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_IncomeTaxTable" name="IncomeTaxTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_IncomelossFromUnconsolidatedInvestmentsInPowerPlantsAndDistributionsTableTextBlock" name="IncomelossFromUnconsolidatedInvestmentsInPowerPlantsAndDistributionsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_IncrementalCCFCTermLoansMember" name="IncrementalCCFCTermLoansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_InlandEmpireEnergyCenterMember" name="InlandEmpireEnergyCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_InterestPeriodsAxis" name="InterestPeriodsAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_InterestPeriodsDomain" name="InterestPeriodsDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_InterestPeriodsForLiborRateBorrowings" name="InterestPeriodsForLiborRateBorrowings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_InterestRateSwapAssetsFairValueDisclosure" name="InterestRateSwapAssetsFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_InterestRateSwapLiabilitiesFairValueDisclosure" name="InterestRateSwapLiabilitiesFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_IntraperiodAxis" name="IntraperiodAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_IntraperiodDomain" name="IntraperiodDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_IntraperiodIncomeTaxLineItems" name="IntraperiodIncomeTaxLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_JointlyOwnedPlantsAbstract" name="JointlyOwnedPlantsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_JointlyOwnedPlantsPolicyTextBlock" name="JointlyOwnedPlantsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_KiacMember" name="KiacMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_LandAndOtherOperatingLeasesMember" name="LandAndOtherOperatingLeasesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_LeaseAssetsAccumulatedDepreciation" name="LeaseAssetsAccumulatedDepreciation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_LeaseAssetsHistoricalCost" name="LeaseAssetsHistoricalCost" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_LeaseLevelization" name="LeaseLevelization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cpn_LetterOfCreditTotal" name="LetterOfCreditTotal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_LettersOfCreditIssued" name="LettersOfCreditIssued" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_LettersOfCreditIssuedAndFirstPriorityLiensUnderPowerNaturalGasAndInterestRateSwapAgreements" name="LettersOfCreditIssuedAndFirstPriorityLiensUnderPowerNaturalGasAndInterestRateSwapAgreements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_LettersOfCreditPostedByCounterparties" name="LettersOfCreditPostedByCounterparties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_LongTermDebtnetofOriginalIssuanceDisount" name="LongTermDebtnetofOriginalIssuanceDisount" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_LosEsterosProjectMember" name="LosEsterosProjectMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_LtsaMember" name="LtsaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_MarginAndPrepaymentAmountsIncludedInMarginDepositsAndOtherPrepaidExpenses" name="MarginAndPrepaymentAmountsIncludedInMarginDepositsAndOtherPrepaidExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_MarginAndPrepaymentAmountsIncludedInOtherAssets" name="MarginAndPrepaymentAmountsIncludedInOtherAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_MarkToMarketCommodityActivityNetAndOtherRevenue" name="MarkToMarketCommodityActivityNetAndOtherRevenue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cpn_MarktoMarketGainLossonDerivativesIncludedinFuelandPurchasedEnergyExpense" name="MarktoMarketGainLossonDerivativesIncludedinFuelandPurchasedEnergyExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cpn_MarktoMarketGainLossonDerivativesincludedinOperatingRevenues" name="MarktoMarketGainLossonDerivativesincludedinOperatingRevenues" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cpn_MaximumRemainingLeaseTerm" name="MaximumRemainingLeaseTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_MinorityInterestOwnershipPercentageByNoncontrollingThirdPartyOwners" name="MinorityInterestOwnershipPercentageByNoncontrollingThirdPartyOwners" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cpn_MiscellaneousincreaseinstateDeferredTaxAssets" name="MiscellaneousincreaseinstateDeferredTaxAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cpn_NaturalGasAndPowerPrepayments" name="NaturalGasAndPowerPrepayments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_NaturalGasDerivativeInstrumentsMember" name="NaturalGasDerivativeInstrumentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_NineMonthsMember" name="NineMonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_NonCashGainsLossesOnExtinguishmentOfDebt" name="NonCashGainsLossesOnExtinguishmentOfDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cpn_NotesPayableOtherPayablesDisclosure" name="NotesPayableOtherPayablesDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_NumberofSignificantCustomers" name="NumberofSignificantCustomers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_NumberofStatesforNOLCarryforwards" name="NumberofStatesforNOLCarryforwards" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="cpn_Numberofpowerplantstobedisposedof" name="Numberofpowerplantstobedisposedof" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_OmecMember" name="OmecMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_OneMonthMember" name="OneMonthMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_OnetaEnergyCenterMember" name="OnetaEnergyCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_OperatingLeaseAssetsAxis" name="OperatingLeaseAssetsAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_OperatingLeaseAssetsDomain" name="OperatingLeaseAssetsDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_OpertingLeaseAssetsTotalMember" name="OpertingLeaseAssetsTotalMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_OrganizationAndOperationsAbstract" name="OrganizationAndOperationsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_OspreyEnergyCenterAgreementTerm" name="OspreyEnergyCenterAgreementTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_OtherRestrictedCashMember" name="OtherRestrictedCashMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_OutstandingClaimsRelatedToGuarantees" name="OutstandingClaimsRelatedToGuarantees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_OwnershipPercentageBeforeDivestitureOfBusiness" name="OwnershipPercentageBeforeDivestitureOfBusiness" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_PacificGasElectricCompanyMember" name="PacificGasElectricCompanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_PasadenaMember" name="PasadenaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_PercentageAddedToFederalFundsEffectiveRateToArriveAtBaseRate" name="PercentageAddedToFederalFundsEffectiveRateToArriveAtBaseRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_PercentageOfPrincipalAmountOfTermLoanToBePaidQuarterly" name="PercentageOfPrincipalAmountOfTermLoanToBePaidQuarterly" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_PercentageoftheprincipalamountoftheTermLoantobepaidquarterly" name="PercentageoftheprincipalamountoftheTermLoantobepaidquarterly" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_PhysicalPowerMember" name="PhysicalPowerMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_PjmSettlementIncMember" name="PjmSettlementIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_PlantOperatingExpensePolicyTextBlock" name="PlantOperatingExpensePolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_PowerCongestionProductsMember" name="PowerCongestionProductsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_PowerDerivativeInstrumentsMember" name="PowerDerivativeInstrumentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_PowerGenerationCapacity" name="PowerGenerationCapacity" nillable="true" substitutionGroup="xbrli:item" type="num:powerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_PowerMember" name="PowerMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_PowerPlantAxis" name="PowerPlantAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_PowerPlantDomain" name="PowerPlantDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_ProjectFinancingNotesPayableAndOtherTableTextBlock" name="ProjectFinancingNotesPayableAndOtherTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_PropertyPlantAndEquipmentGrossLessAccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" name="PropertyPlantAndEquipmentGrossLessAccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_PropertyPlantAndEquipmentSalvageValuePercentageRotables" name="PropertyPlantAndEquipmentSalvageValuePercentageRotables" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cpn_ProrataShareOfEquityMethodInvestmentSummarizedFinancialInformationDebt" name="ProrataShareOfEquityMethodInvestmentSummarizedFinancialInformationDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_PurchasePriceofCommonStockPurchasedfromShareholder" name="PurchasePriceofCommonStockPurchasedfromShareholder" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_PutOptionExercisePeriod" name="PutOptionExercisePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_QuantitativeInformationAboutLevel3FairValueMeasurementsAbstract" name="QuantitativeInformationAboutLevel3FairValueMeasurementsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_QuantitativeInformationAboutLevel3FairValueMeasurementsLineItems" name="QuantitativeInformationAboutLevel3FairValueMeasurementsLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_QuantitativeInformationAboutLevel3FairValueMeasurementsTable" name="QuantitativeInformationAboutLevel3FairValueMeasurementsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_RealizedUnrealizedGainLossByInstrumentTableTextBlock" name="RealizedUnrealizedGainLossByInstrumentTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_RentReserveMember" name="RentReserveMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_RepaymentTimeForDrawingsUnderLettersOfCredit" name="RepaymentTimeForDrawingsUnderLettersOfCredit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_RestrictedStockAndStockUnitActivityAbstract" name="RestrictedStockAndStockUnitActivityAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_RiversideEnergyCenterMember" name="RiversideEnergyCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_RussellCityEnergyMember" name="RussellCityEnergyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_RussellCityProjectMember" name="RussellCityProjectMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_SantaRosaEnergyCenterMember" name="SantaRosaEnergyCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_ScheduleOfFutureMinimumPaymentsForCommoditiesTableTextBlock" name="ScheduleOfFutureMinimumPaymentsForCommoditiesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesOfficeAndEquipmentLeasesTableTextBlock" name="ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesOfficeAndEquipmentLeasesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_ScheduleOfIncomeTaxExpenseBenefitIntraperiodTaxAllocationTableTextBlock" name="ScheduleOfIncomeTaxExpenseBenefitIntraperiodTaxAllocationTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_SecurityProjectInsuranceMember" name="SecurityProjectInsuranceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_SegmentAndSignificantCustomerInformationAbstract" name="SegmentAndSignificantCustomerInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_SeniorUnsecuredNotes2023Member" name="SeniorUnsecuredNotes2023Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_SeniorUnsecuredNotes2024Member" name="SeniorUnsecuredNotes2024Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_SeniorUnsecuredNotes2025Member" name="SeniorUnsecuredNotes2025Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_SeniorUnsecuredNotesFairValueDisclosure" name="SeniorUnsecuredNotesFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_SeniorUnsecuredNotesTableTextBlock" name="SeniorUnsecuredNotesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationMaximumRange" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationMaximumRange" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationMinimumRange" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationMinimumRange" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedForDirectors" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedForDirectors" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="cpn_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedForEmployees" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedForEmployees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_ShareRepurchasesin2014Member" name="ShareRepurchasesin2014Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_ShareholderOwnershipPercentage" name="ShareholderOwnershipPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_SixMonthsMember" name="SixMonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_SixPowerPlantsDisposedAbstract" name="SixPowerPlantsDisposedAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_SixPowerPlantsMember" name="SixPowerPlantsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_SixPowerPlantsTobedisposedofTableTextBlock" name="SixPowerPlantsTobedisposedofTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_SteamboatMember" name="SteamboatMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_StockBasedCompensationAbstract" name="StockBasedCompensationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_SubsidiariesTermLoan" name="SubsidiariesTermLoan" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_SummaryOfSignificantAccountingPoliciesAbstract" name="SummaryOfSignificantAccountingPoliciesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_SummaryOfSignificantAccountingPoliciesTable" name="SummaryOfSignificantAccountingPoliciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_SuretyBondsMember" name="SuretyBondsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_TaxRefundDueToForeignDividendIncomeTreatment" name="TaxRefundDueToForeignDividendIncomeTreatment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_TaxRefundPlusAccruedInterestDueToForeignDividendIncomeTreatment" name="TaxRefundPlusAccruedInterestDueToForeignDividendIncomeTreatment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_TermLoanPeriod" name="TermLoanPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_TermloaninterestratespreadoptionFederalFundseffectiverate" name="TermloaninterestratespreadoptionFederalFundseffectiverate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_TermloaninterestratespreadoptionPrimeRate" name="TermloaninterestratespreadoptionPrimeRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_TermofUnrecordedUnconditionalPurchaseObligationLowerLimit" name="TermofUnrecordedUnconditionalPurchaseObligationLowerLimit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_TermofUnrecordedUnconditionalPurchaseObligationUpperLimit" name="TermofUnrecordedUnconditionalPurchaseObligationUpperLimit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_ThreeMonthsMember" name="ThreeMonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_TotalCommonSharesOutstandingIncludingSharesHeldInReserve" name="TotalCommonSharesOutstandingIncludingSharesHeldInReserve" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_TotalLeasesFutureMinimumPaymentsAbstract" name="TotalLeasesFutureMinimumPaymentsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_TotalLeasesFutureMinimumPaymentsDue" name="TotalLeasesFutureMinimumPaymentsDue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_TotalLeasesFutureMinimumPaymentsDueCurrent" name="TotalLeasesFutureMinimumPaymentsDueCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_TotalLeasesFutureMinimumPaymentsDueInFiveYears" name="TotalLeasesFutureMinimumPaymentsDueInFiveYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_TotalLeasesFutureMinimumPaymentsDueInFourYears" name="TotalLeasesFutureMinimumPaymentsDueInFourYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_TotalLeasesFutureMinimumPaymentsDueInThreeYears" name="TotalLeasesFutureMinimumPaymentsDueInThreeYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_TotalLeasesFutureMinimumPaymentsDueInTwoYears" name="TotalLeasesFutureMinimumPaymentsDueInTwoYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_TotalLeasesFutureMinimumPaymentsDueThereafter" name="TotalLeasesFutureMinimumPaymentsDueThereafter" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_TotalLeasesFutureMinimumPaymentsInterestIncludedInPayments" name="TotalLeasesFutureMinimumPaymentsInterestIncludedInPayments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpn_TotalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments" name="TotalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cpn_TreasuryStockPolicyTextBlock" name="TreasuryStockPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_TwelveMonthsMember" name="TwelveMonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_TwoMonthsMember" name="TwoMonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_UnrecognizedTaxBenefitRelatedtoDeferredTaxAsset" name="UnrecognizedTaxBenefitRelatedtoDeferredTaxAsset" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpn_UseOfCollateralAbstract" name="UseOfCollateralAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_UseOfCollateralTextBlock" name="UseOfCollateralTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_UseOfCollateralTextualsAbstract" name="UseOfCollateralTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_UtilityPlantInterestsAxis" name="UtilityPlantInterestsAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_UtilityPlantInterestsDomain" name="UtilityPlantInterestsDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_VariableInterestEntitiesAndUnconsolidatedInvestmentsAbstract" name="VariableInterestEntitiesAndUnconsolidatedInvestmentsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_VariableInterestEntitiesAndUnconsolidatedInvestmentsTextBlock" name="VariableInterestEntitiesAndUnconsolidatedInvestmentsTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_VariousProjectFinancingFacilitiesMember" name="VariousProjectFinancingFacilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_VestTermOfFirstSubGrant" name="VestTermOfFirstSubGrant" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_VestTermOfSecondSubGrant" name="VestTermOfSecondSubGrant" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_VestTermOfThirdSubGrant" name="VestTermOfThirdSubGrant" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_VestingPeriodForGradedAndCliffVestingOptionsMaximum" name="VestingPeriodForGradedAndCliffVestingOptionsMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_VestingPeriodForGradedAndCliffVestingOptionsMinimum" name="VestingPeriodForGradedAndCliffVestingOptionsMinimum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_VestingTermOfOptionGrantsWithThreeYearCliffVesting" name="VestingTermOfOptionGrantsWithThreeYearCliffVesting" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_WestMember" name="WestMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpn_WhitbyMember" name="WhitbyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpn_WorkingCapitalAdjustmenttoSaleprice" name="WorkingCapitalAdjustmenttoSaleprice" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
</xsd:schema>


