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  <xsd:element abstract="true" id="aep_DerivativesAndHedgingTextualsAbstract" name="DerivativesAndHedgingTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_DilutiveSecurities1" name="DilutiveSecurities1" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_DirectBorrowingActivityTableTextBlock" name="DirectBorrowingActivityTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_DirectBorrowingMember" name="DirectBorrowingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_DisallowanceItemAxis" name="DisallowanceItemAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_DisallowanceItemDomain" name="DisallowanceItemDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_DisallowedIteminCommissionOrder" name="DisallowedIteminCommissionOrder" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_DoletHillsGeneratingStationUnitNo1Member" name="DoletHillsGeneratingStationUnitNo1Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_DoletHillsLigniteCompanyUnbilledFixedCosts" name="DoletHillsLigniteCompanyUnbilledFixedCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="aep_DoletHillsPowerStationAcceleratedDepreciationMember" name="DoletHillsPowerStationAcceleratedDepreciationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_DomesticMember" name="DomesticMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_ETTInterimTransmissionRatesMember" name="ETTInterimTransmissionRatesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_EffectiveIncomeTaxRateReconciliationAFUDCEquityPercentage" name="EffectiveIncomeTaxRateReconciliationAFUDCEquityPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_EffectiveIncomeTaxRateReconciliationDiscreteTaxAdjustmentsPercentage" name="EffectiveIncomeTaxRateReconciliationDiscreteTaxAdjustmentsPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_EffectiveIncomeTaxRateReconciliationFlowThroughPercentage" name="EffectiveIncomeTaxRateReconciliationFlowThroughPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_EffectiveIncomeTaxRateReconciliationParentCompanyLossBenefitPercentage" name="EffectiveIncomeTaxRateReconciliationParentCompanyLossBenefitPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_EffectiveIncomeTaxRateReconciliationproductionandinvestmenttaxcredits" name="EffectiveIncomeTaxRateReconciliationproductionandinvestmenttaxcredits" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_EffectiveInterestRatesOnSecuritizationOfAccountsReceivable" name="EffectiveInterestRatesOnSecuritizationOfAccountsReceivable" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_ElectricGenerationTransmissionDistributionRevenuesMember" name="ElectricGenerationTransmissionDistributionRevenuesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_EmployeeBenefitsAndPensionAssets" name="EmployeeBenefitsAndPensionAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="aep_EmployeeBenefitsAndPensionObligations" name="EmployeeBenefitsAndPensionObligations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="aep_EnergyContractsMember" name="EnergyContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_EquityUnitsAnnualDistributionRate" name="EquityUnitsAnnualDistributionRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="aep_EquityUnitsIssued" name="EquityUnitsIssued" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_EquityunitsMember" name="EquityunitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_ExcessADITAmortizationnotSubjecttoNormalizationRequirementsPolicyAbstract" name="ExcessADITAmortizationnotSubjecttoNormalizationRequirementsPolicyAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_ExcessADITandExcessFederalIncomeTaxestoDistributionCustomersMember" name="ExcessADITandExcessFederalIncomeTaxestoDistributionCustomersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_ExcessADITandExcessFederalIncomeTaxestoTransmissionCustomersMember" name="ExcessADITandExcessFederalIncomeTaxestoTransmissionCustomersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_ExpectedReimbursementForSpentNuclearFuelDryCaskStorage" name="ExpectedReimbursementForSpentNuclearFuelDryCaskStorage" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="aep_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisPolicyTextBlock" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_FairValueMeasurements1TextualsAbstract" name="FairValueMeasurements1TextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_FairValueMeasurementsTextualsAbstract" name="FairValueMeasurementsTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_FairValueOfDerivativeLiabilitiesSubjectToCrossDefaultProvisions" name="FairValueOfDerivativeLiabilitiesSubjectToCrossDefaultProvisions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="aep_FairValueSignificantUnobservableInputPricePerUnit" name="FairValueSignificantUnobservableInputPricePerUnit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="aep_FeesPaidToAepCreditForCustomerAccountsReceivableSoldAbstract" name="FeesPaidToAepCreditForCustomerAccountsReceivableSoldAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_FeesPaidToAepCreditForCustomerAccountsReceivableSoldTextBlock" name="FeesPaidToAepCreditForCustomerAccountsReceivableSoldTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_FinancialTrasnsmissionRightsMember" name="FinancialTrasnsmissionRightsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_FinancingActivitiesTextualsAbstract" name="FinancingActivitiesTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_ForwardEquityContractPaymentRate" name="ForwardEquityContractPaymentRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="aep_ForwardEquityPurchaseContractDate" name="ForwardEquityPurchaseContractDate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:gYearItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_FuelOverUnderRecoveryNet" name="FuelOverUnderRecoveryNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="aep_FutureMinimumLeasePaymentsforSaleandLeasebackTableTextBlock" name="FutureMinimumLeasePaymentsforSaleandLeasebackTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_GainLossOnFairValuePortionOfLongTermDebt" name="GainLossOnFairValuePortionOfLongTermDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_GeneratingUnitsProbableofAbandonmentMember" name="GeneratingUnitsProbableofAbandonmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_GenerationAndMarketingMember" name="GenerationAndMarketingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_GenerationAndMarketingRevenuesMember" name="GenerationAndMarketingRevenuesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_GrossAmountsOfRiskManagementAssetsLiabilitiesRecognizedMember" name="GrossAmountsOfRiskManagementAssetsLiabilitiesRecognizedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_GrossAmountsOffsetInStatementOfFinancialPositionMember" name="GrossAmountsOffsetInStatementOfFinancialPositionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_GrossRealizedGainsOnInvestmentSalesOnShortTermInvestment" name="GrossRealizedGainsOnInvestmentSalesOnShortTermInvestment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="aep_GrossRealizedLossesOnInvestmentSalesOnShortTermInvestment" name="GrossRealizedLossesOnInvestmentSalesOnShortTermInvestment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="aep_GuaranteeObligationsCurrentCarryingValueOtherLiabilitiesCurrent" name="GuaranteeObligationsCurrentCarryingValueOtherLiabilitiesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="aep_GuaranteeObligationsCurrentCarryingValueOtherLiabilitiesNoncurrent" name="GuaranteeObligationsCurrentCarryingValueOtherLiabilitiesNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="aep_GuarantorObligationsCurrentCarryingValueContingentPortion" name="GuarantorObligationsCurrentCarryingValueContingentPortion" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="aep_HeatingOilAndGasolineContractMember" name="HeatingOilAndGasolineContractMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_HedgingContractsMember" name="HedgingContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_ImpactOfCashFlowHedgesOnBalanceSheetAbstract" name="ImpactOfCashFlowHedgesOnBalanceSheetAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_ImpactOfCashFlowHedgesOnBalanceSheetTextBlock" name="ImpactOfCashFlowHedgesOnBalanceSheetTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_ImpactofFairValueHedgesonBalanceSheetTableTextBlock" name="ImpactofFairValueHedgesonBalanceSheetTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_ImpactonPretaxEarningsduetoLossofSignificantContract" name="ImpactonPretaxEarningsduetoLossofSignificantContract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_ImpairmentChargeDisallowedPlantInvestments" name="ImpairmentChargeDisallowedPlantInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_ImpairmentChargeTotal" name="ImpairmentChargeTotal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_ImpairmentChargeWelshPlantUnit2" name="ImpairmentChargeWelshPlantUnit2" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_IncomeTaxesTextualsAbstract" name="IncomeTaxesTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_IndianaMichiganPowerCoMember" name="IndianaMichiganPowerCoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_IndustrialMember" name="IndustrialMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_InitialPhasedinAnnualIncrease" name="InitialPhasedinAnnualIncrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_InterestRateAbstract" name="InterestRateAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_InterestRateMember" name="InterestRateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_ItemtobeRefundedinCommissionOrder" name="ItemtobeRefundedinCommissionOrder" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_June2022Member" name="June2022Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_KentuckyDeferredPurchasePowerExpensesMember" name="KentuckyDeferredPurchasePowerExpensesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_KentuckyPowerCoMember" name="KentuckyPowerCoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_LessThan1YearMember" name="LessThan1YearMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_LettersOfCreditMember" name="LettersOfCreditMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_LoanstoParent" name="LoanstoParent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="aep_LongTermDebtAndOtherSecuritiesIssuedRetiredAndPrincipalPaymentsMadeAbstract" name="LongTermDebtAndOtherSecuritiesIssuedRetiredAndPrincipalPaymentsMadeAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_LongTermDebtAndOtherSecuritiesIssuedTextBlock" name="LongTermDebtAndOtherSecuritiesIssuedTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_Louisiana2018FormulaRateFilingMember" name="Louisiana2018FormulaRateFilingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_MaintenanceExpenseMember" name="MaintenanceExpenseMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_MarketingCompetitiveRetailandRenewableMember" name="MarketingCompetitiveRetailandRenewableMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_MaterialsandSuppliesRelatedtoRetiredPlantsMember" name="MaterialsandSuppliesRelatedtoRetiredPlantsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_MaturityOfFairValueRiskManagementContractsAxis" name="MaturityOfFairValueRiskManagementContractsAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MaturityOfNetFairValueOfRiskManagementContractsPriorToCashCollateralAssetsOrLiabilities" name="MaturityOfNetFairValueOfRiskManagementContractsPriorToCashCollateralAssetsOrLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="aep_MaturityPeriod2Member" name="MaturityPeriod2Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_MaturityPeriod3Member" name="MaturityPeriod3Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_MaturityPeriodFourMember" name="MaturityPeriodFourMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_MaturityYearDomain" name="MaturityYearDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_MaturityofCreditFacilityAxis" name="MaturityofCreditFacilityAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_MaturityofcreditfacilityDomain" name="MaturityofcreditfacilityDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MaxPotentialLossOnMasterLeaseAgreements" name="MaxPotentialLossOnMasterLeaseAgreements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="aep_MaxPotentialLossonMasterLeaseAgreementsTableTextBlock" name="MaxPotentialLossonMasterLeaseAgreementsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_MaximumAndMinimumInterestRatesAbstract" name="MaximumAndMinimumInterestRatesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MaximumAndMinimumInterestRatesForFundsEitherBorrowedFromOrLoanedToUtilityMoneyPoolTextBlock" name="MaximumAndMinimumInterestRatesForFundsEitherBorrowedFromOrLoanedToUtilityMoneyPoolTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MaximumBorrowingsfromMoneyPool" name="MaximumBorrowingsfromMoneyPool" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_MaximumFuturePaymentsForLettersOfCreditAbstract" name="MaximumFuturePaymentsForLettersOfCreditAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MaximumFuturePaymentsforLettersofCreditIssuedUndertheUncommittedFacility" name="MaximumFuturePaymentsforLettersofCreditIssuedUndertheUncommittedFacility" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="aep_MaximumFuturePaymentsforLettersofCreditUncommittedFacilitiesTableTextBlock" name="MaximumFuturePaymentsforLettersofCreditUncommittedFacilitiesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MaximumInterestRate" name="MaximumInterestRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MaximumInterestRateForFundsLoaned" name="MaximumInterestRateForFundsLoaned" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MaximumInterestRateforFundsBorrowed" name="MaximumInterestRateforFundsBorrowed" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MaximumLoanstoMoneyPool" name="MaximumLoanstoMoneyPool" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="aep_MaximumMinimumAverageInterestRatesForFundsBorrowedFromLoanedToNonutilityMoneyPoolTextBlock" name="MaximumMinimumAverageInterestRatesForFundsBorrowedFromLoanedToNonutilityMoneyPoolTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MaximumMinimumandAverageInterestRatesforFundsBorrowedfromandLoanedtoAEPTableTextBlock" name="MaximumMinimumandAverageInterestRatesforFundsBorrowedfromandLoanedtoAEPTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MaximumPercentageDebtToCapitalization" name="MaximumPercentageDebtToCapitalization" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MaximumPercentageofConsolidatedTangibleNetAssets" name="MaximumPercentageofConsolidatedTangibleNetAssets" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="aep_MaximumPotentialAmountofFuturePaymentsAssociatedwithGuarantee" name="MaximumPotentialAmountofFuturePaymentsAssociatedwithGuarantee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="aep_MaximumPotentialLeasePaymentsAEPROBargeandBoatLeases" name="MaximumPotentialLeasePaymentsAEPROBargeandBoatLeases" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="aep_MaximumPotentialLossAbstract" name="MaximumPotentialLossAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MaximumSharesIssuedUnderEquityUnitsConversion" name="MaximumSharesIssuedUnderEquityUnitsConversion" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MezzanineEquity" name="MezzanineEquity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="aep_MinimumInterestRate" name="MinimumInterestRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MinimumInterestRateForFundsBorrowed" name="MinimumInterestRateForFundsBorrowed" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_MinimumInterestRateforFundsLoaned" name="MinimumInterestRateforFundsLoaned" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_MoneyPoolParticipantbyCompanyTypeAxis" name="MoneyPoolParticipantbyCompanyTypeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_MoneyPoolParticipantbyCompanyTypeDomain" name="MoneyPoolParticipantbyCompanyTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_MoneyPoolParticipantsMoneyPoolActivityAndAuthorizedBorrowingLimitsAbstract" name="MoneyPoolParticipantsMoneyPoolActivityAndAuthorizedBorrowingLimitsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_MutualFundsFixedIncomeMember" name="MutualFundsFixedIncomeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_NaturalGasContractMember" name="NaturalGasContractMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_NetAmountsOfAssetsLiabilitiesPresentedInStatementOfFinancialPositionMember" name="NetAmountsOfAssetsLiabilitiesPresentedInStatementOfFinancialPositionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_NetBookValueofRetiredPlants" name="NetBookValueofRetiredPlants" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="aep_NetEquityUnitsIssuanceProceeds" name="NetEquityUnitsIssuanceProceeds" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="aep_NetUncollectibleAccountsReceivableWrittenOff" name="NetUncollectibleAccountsReceivableWrittenOff" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_NonutilityMember" name="NonutilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_NonutilityMoneyPoolActivityTableTextBlock" name="NonutilityMoneyPoolActivityTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_NotesPayableOtherPayableFiveMember" name="NotesPayableOtherPayableFiveMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_NotesPayableOtherPayableFourMember" name="NotesPayableOtherPayableFourMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_NotesPayableOtherPayableThreeMember" name="NotesPayableOtherPayableThreeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_NotesPayableOtherPayableTwoMember" name="NotesPayableOtherPayableTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_NotesPayableOtherPayablesSixMember" name="NotesPayableOtherPayablesSixMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_NotionalVolumeOfDerivativeInstrumentsAbstract" name="NotionalVolumeOfDerivativeInstrumentsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_NuclearFuelAndDecommissioningTrustsAbstract" name="NuclearFuelAndDecommissioningTrustsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_NuclearTrustFundInvestmentsAbstract" name="NuclearTrustFundInvestmentsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_NuclearTrustFundInvestmentsTextBlock" name="NuclearTrustFundInvestmentsTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_OhioPowerCoMember" name="OhioPowerCoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_OklaunionGeneratingStationUnitNo1Member" name="OklaunionGeneratingStationUnitNo1Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_OklaunionPowerStationAcceleratedDepreciationMember" name="OklaunionPowerStationAcceleratedDepreciationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_OklaunionPurchasePowerAgreementCurrent" name="OklaunionPurchasePowerAgreementCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="aep_OrganizationAndSummaryOfSignificantAccountingPoliciesTextualsAbstract" name="OrganizationAndSummaryOfSignificantAccountingPoliciesTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_OtherComprehensiveIncomeUnrealizedGainLossArisingDuringPeriodNetOfTax" name="OtherComprehensiveIncomeUnrealizedGainLossArisingDuringPeriodNetOfTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_OtherLongTermDebtMember" name="OtherLongTermDebtMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_OtherLongTermDebtTwoMember" name="OtherLongTermDebtTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_OtherOperationExpenseMember" name="OtherOperationExpenseMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_OtherRegulatoryAssetsNotYetBeingRecoveredMember" name="OtherRegulatoryAssetsNotYetBeingRecoveredMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_OtherRetailMember" name="OtherRetailMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_OtherRevenuesAffiliatedandNonaffiliatedMember" name="OtherRevenuesAffiliatedandNonaffiliatedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_OtherRevenuesMember" name="OtherRevenuesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_OtherTemporaryInvestmentsTextBlock" name="OtherTemporaryInvestmentsTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_OxbowUnbilledFixedCosts" name="OxbowUnbilledFixedCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="aep_ParentOwnershipInterestInETT" name="ParentOwnershipInterestInETT" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_PerUnitConversionforEquityUnits" name="PerUnitConversionforEquityUnits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="aep_PercentageofanAssetAcquired" name="PercentageofanAssetAcquired" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="aep_PercentofExcessEarningsSubjecttoRefund" name="PercentofExcessEarningsSubjecttoRefund" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_PercentofFuelSupplyProvidedbyDHLC" name="PercentofFuelSupplyProvidedbyDHLC" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_PlantRetirementCostsUnrecoveredPlantLouisianaMember" name="PlantRetirementCostsUnrecoveredPlantLouisianaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_PlantRetirementCostsUnrecoveredPlantMember" name="PlantRetirementCostsUnrecoveredPlantMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_PowerContractMember" name="PowerContractMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_PreviouslyCollectedRatesSubjecttoReconciliationMember" name="PreviouslyCollectedRatesSubjecttoReconciliationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_PrincipalAmountsofJuniorSubordinatedDebt" name="PrincipalAmountsofJuniorSubordinatedDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="aep_ProceedsOnSaleOfReceivablesToAepCreditTextBlock" name="ProceedsOnSaleOfReceivablesToAepCreditTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_ProvisionforRefund" name="ProvisionforRefund" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="aep_ProvisionforRefundGlobalSettlement" name="ProvisionforRefundGlobalSettlement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_PublicServiceCoOfOklahomaMember" name="PublicServiceCoOfOklahomaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_PurchasedElectricityForResaleMember" name="PurchasedElectricityForResaleMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RateCaseExpenseMember" name="RateCaseExpenseMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_RateMatters" name="RateMatters" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="aep_ReclassificationsFromAccumulatedOtherComprehensiveIncomeAbstract" name="ReclassificationsFromAccumulatedOtherComprehensiveIncomeAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RecognitionPeriodAxis" name="RecognitionPeriodAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RecognitionPeriodDomain" name="RecognitionPeriodDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RefundItemAxis" name="RefundItemAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RefundItemDomain" name="RefundItemDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_RefundforCurrentYearTaxReformRateChange" name="RefundforCurrentYearTaxReformRateChange" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_RefundforExcessADIT" name="RefundforExcessADIT" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_RefundforExcessADITAssociatedwithCertainDepreciableProperty" name="RefundforExcessADITAssociatedwithCertainDepreciableProperty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RegulatedStatusAxis" name="RegulatedStatusAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RegulatedStatusDomain" name="RegulatedStatusDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RegulatoryAssetReturnDisclosureAxis" name="RegulatoryAssetReturnDisclosureAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RegulatoryAssetsCurrentlyEarningReturnMember" name="RegulatoryAssetsCurrentlyEarningReturnMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RegulatoryAssetsCurrentlyNotEarningReturnMember" name="RegulatoryAssetsCurrentlyNotEarningReturnMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RegulatoryAssetsMember" name="RegulatoryAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RegulatoryAssetsPendingFinalRegulatoryApprovalMember" name="RegulatoryAssetsPendingFinalRegulatoryApprovalMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RegulatoryAssetsReturnDisclosureDomain" name="RegulatoryAssetsReturnDisclosureDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RegulatoryLiabilitiesMember" name="RegulatoryLiabilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_RemainingRecoveryPeriodPlantDepreciation" name="RemainingRecoveryPeriodPlantDepreciation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_RenewableEnergyCredits" name="RenewableEnergyCredits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="aep_RenewableGenerationMember" name="RenewableGenerationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_RequestedAnnualIncrease" name="RequestedAnnualIncrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_RequestedNetIncreaseinTexasAnnualRevenues" name="RequestedNetIncreaseinTexasAnnualRevenues" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_RequestedReturnOnEquity" name="RequestedReturnOnEquity" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_ResidentialMember" name="ResidentialMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RestrictedStockUnitsandPerformanceShareUnitsMember" name="RestrictedStockUnitsandPerformanceShareUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_ResultingApprovedBaseRateIncrease" name="ResultingApprovedBaseRateIncrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RevenueTextualsAbstract" name="RevenueTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RevenuefromContractswithCustomersAbstract" name="RevenuefromContractswithCustomersAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_ReversalofaRegulatoryProvision" name="ReversalofaRegulatoryProvision" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RiskManagementCommodityContractsMember" name="RiskManagementCommodityContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_RockportLeaseMember" name="RockportLeaseMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_SabineMiningCoMember" name="SabineMiningCoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_SecuritiesActivityWithinDecommissioningAndSnfTrustsAbstract" name="SecuritiesActivityWithinDecommissioningAndSnfTrustsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_SecuritiesActivityWithinDecommissioningAndSnfTrustsTextBlock" name="SecuritiesActivityWithinDecommissioningAndSnfTrustsTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_SecuritizationBondsMember" name="SecuritizationBondsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_SecuritizationBondsTwoMember" name="SecuritizationBondsTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_SeniorUnsecuredNotesMember" name="SeniorUnsecuredNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_SeniorUnsecuredNotesTwoMember" name="SeniorUnsecuredNotesTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_ShareofNetInvestmentinDoletHillsPowerStation" name="ShareofNetInvestmentinDoletHillsPowerStation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="aep_SharesPerEquityUnit" name="SharesPerEquityUnit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="aep_SouthwesternElectricPowerCoMember" name="SouthwesternElectricPowerCoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_SpentNuclearFuelAndDecommissioningTrusts" name="SpentNuclearFuelAndDecommissioningTrusts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="aep_SpentNuclearFuelandDecommissioningTrustsMember" name="SpentNuclearFuelandDecommissioningTrustsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_StaffRecommendedAnnualRateIncrease" name="StaffRecommendedAnnualRateIncrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_StateTranscosMember" name="StateTranscosMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_StockholdersEquityASU201613Adoption" name="StockholdersEquityASU201613Adoption" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="aep_SubLimitofSecuredDebt" name="SubLimitofSecuredDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="aep_SupplementaryInformationTextBlock" name="SupplementaryInformationTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_TexasJurisdictionalShareofTurkPlant" name="TexasJurisdictionalShareofTurkPlant" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_TotalCommitmentFromBankConduitsToFinanceReceivables" name="TotalCommitmentFromBankConduitsToFinanceReceivables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="aep_TotalMezzanineEquity" name="TotalMezzanineEquity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="aep_TransmissionAndDistributionCompaniesMember" name="TransmissionAndDistributionCompaniesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_TransmissionOperationsMember" name="TransmissionOperationsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_TransmissionandDistributionUtilitiesRevenuesMember" name="TransmissionandDistributionUtilitiesRevenuesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_TransourceEnergyMember" name="TransourceEnergyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_TrustAssetsAxis" name="TrustAssetsAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_TrustAssetsDomain" name="TrustAssetsDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_TrustAssetsForDecommissioningAndSpentNuclearFuelDisposalPolicyTextBlock" name="TrustAssetsForDecommissioningAndSpentNuclearFuelDisposalPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_TrustFundAssetsOneTimeFeeObligationForNuclearFuelDisposition" name="TrustFundAssetsOneTimeFeeObligationForNuclearFuelDisposition" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="aep_TurkGeneratingPlantMember" name="TurkGeneratingPlantMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_UnbilledReceivablesRelatedToSecuritizationSaleOfAccountsReceivable" name="UnbilledReceivablesRelatedToSecuritizationSaleOfAccountsReceivable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="aep_UncommittedFacility" name="UncommittedFacility" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="aep_UnprotectedExcessADITAmortizationPolicyLineItems" name="UnprotectedExcessADITAmortizationPolicyLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_UnprotectedExcessADITAmortizationPolicyTable" name="UnprotectedExcessADITAmortizationPolicyTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_UnprotectedExcessADITAmortizationPolicyTableTextBlock" name="UnprotectedExcessADITAmortizationPolicyTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_UtilityMember" name="UtilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_UtilityMoneyPoolParticipantsMoneyPoolActivityAndAuthorizedBorrowingLimitsTextBlock" name="UtilityMoneyPoolParticipantsMoneyPoolActivityAndAuthorizedBorrowingLimitsTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_VegetationManagementMember" name="VegetationManagementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_VerticallyIntegratedUtilitiesMember" name="VerticallyIntegratedUtilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_VerticallyIntegratedUtilitiesRevenuesMember" name="VerticallyIntegratedUtilitiesRevenuesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_VirginiaJurisdictionalAMRMetersMember" name="VirginiaJurisdictionalAMRMetersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_VirginiaLegislationAffectingBiennialReviewsMember" name="VirginiaLegislationAffectingBiennialReviewsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_WholesaleGenerationMember" name="WholesaleGenerationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_WholesaleTransmissionMember" name="WholesaleTransmissionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_WholesaleandCompetitiveMember" name="WholesaleandCompetitiveMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_WindGenerationMWs" name="WindGenerationMWs" nillable="true" substitutionGroup="xbrli:item" type="num:powerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="aep_WithinCurrentYearMember" name="WithinCurrentYearMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="aep_WriteoffofRegulatoryExpense" name="WriteoffofRegulatoryExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
</xsd:schema>
