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  <xs:element id="aep_OtherLongTermDebtThreeMember" abstract="true" name="OtherLongTermDebtThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_A2016TexasBaseRateCaseMember" abstract="true" name="A2016TexasBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PerUnitConversionforEquityUnits" abstract="false" name="PerUnitConversionforEquityUnits" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="aep_RequestedNetIncreaseInOklahomaAnnualRevenues" abstract="false" name="RequestedNetIncreaseInOklahomaAnnualRevenues" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_CookPlantMember" abstract="true" name="CookPlantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aep_PirkeyPowerPlantAcceleratedDepreciationMember" abstract="true" name="PirkeyPowerPlantAcceleratedDepreciationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PrepaidPensionAndOPEBAssetsMember" abstract="true" name="PrepaidPensionAndOPEBAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="aep_AmountOfIncreaseRelatedToAnnualDepreciationExpense" abstract="false" name="AmountOfIncreaseRelatedToAnnualDepreciationExpense" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="aep_CustomerAccountsReceivableManagedPortfolioAbstract" abstract="true" name="CustomerAccountsReceivableManagedPortfolioAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_StandAloneTreatmentOfNOLCsAnnualRevenueIncrease" abstract="false" name="StandAloneTreatmentOfNOLCsAnnualRevenueIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="aep_DryLakeSolarProjectMember" abstract="true" name="DryLakeSolarProjectMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="aep_AEPTexasInterimTransmissionAndDistributionRatesMember" abstract="true" name="AEPTexasInterimTransmissionAndDistributionRatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_OwnershipInterestInMitchellPowerPlant" abstract="false" name="OwnershipInterestInMitchellPowerPlant" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_BoatandBargeLeasesMember" abstract="true" name="BoatandBargeLeasesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_RequestedDeferredStormCosts" abstract="false" name="RequestedDeferredStormCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="aep_EffectiveInterestRatesOnSecuritizationOfAccountsReceivable" abstract="false" name="EffectiveInterestRatesOnSecuritizationOfAccountsReceivable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
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  <xs:element id="aep_ImpactOfCashFlowHedgesOnBalanceSheetTextBlock" abstract="false" name="ImpactOfCashFlowHedgesOnBalanceSheetTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
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  <xs:element id="aep_PublicServiceCoOfOklahomaMember" abstract="true" name="PublicServiceCoOfOklahomaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="aep_AverageInterestRateForFundsBorrowed" abstract="false" name="AverageInterestRateForFundsBorrowed" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_SouthwesternElectricPowerCoMember" abstract="true" name="SouthwesternElectricPowerCoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_GainLossOnFairValuePortionOfLongTermDebt" abstract="false" name="GainLossOnFairValuePortionOfLongTermDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="aep_TransmissionAndDistributionCompaniesMember" abstract="true" name="TransmissionAndDistributionCompaniesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_RockportLeaseMember" abstract="true" name="RockportLeaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AEPShareOfIndependenceEnergyConnectionCapitalCosts" abstract="false" name="AEPShareOfIndependenceEnergyConnectionCapitalCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_BookValuesAndFairValuesOfLongTermDebtPolicyTextBlock" abstract="false" name="BookValuesAndFairValuesOfLongTermDebtPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
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  <xs:element id="aep_CommitmentsGuaranteesAndContingenciesAbstract" abstract="true" name="CommitmentsGuaranteesAndContingenciesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_MarketingCompetitiveRetailandRenewableMember" abstract="true" name="MarketingCompetitiveRetailandRenewableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_OtherLongTermDebtFiveMember" abstract="true" name="OtherLongTermDebtFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PaymentAtClosingMember" abstract="true" name="PaymentAtClosingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="aep_ApprovedRiderToRecoverDoletHillsAndPirkeyCosts" abstract="false" name="ApprovedRiderToRecoverDoletHillsAndPirkeyCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="aep_AppleBlossomandBlackOakMember" abstract="true" name="AppleBlossomandBlackOakMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AEPWindHoldingsLLCMember" abstract="true" name="AEPWindHoldingsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="aep_OhioPowerCoMember" abstract="true" name="OhioPowerCoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PowerContractMember" abstract="true" name="PowerContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="aep_AssetsAndLiabilitiesHFSContractedRenewablesTableTextBlock" abstract="false" name="AssetsAndLiabilitiesHFSContractedRenewablesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
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  <xs:element id="aep_ProceedsOfMineralRightsSaleDomain" abstract="true" name="ProceedsOfMineralRightsSaleDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_DoletHillsPowerStationMember" abstract="true" name="DoletHillsPowerStationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="aep_FACCreditToCustomers" abstract="false" name="FACCreditToCustomers" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_MaturityYearDomain" abstract="true" name="MaturityYearDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AssetsAndLiabilitiesHeldForSaleDomain" abstract="true" name="AssetsAndLiabilitiesHeldForSaleDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_MaintenanceExpenseMember" abstract="true" name="MaintenanceExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_FutureMinimumLeasePaymentsforSaleandLeasebackTableTextBlock" abstract="false" name="FutureMinimumLeasePaymentsforSaleandLeasebackTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_UtilityPlantGenerationCapacity" abstract="false" name="UtilityPlantGenerationCapacity" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:powerItemType"/>
  <xs:element id="aep_DilutiveSecurities1" abstract="false" name="DilutiveSecurities1" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="aep_DebtInstrumentMaturityDate1" abstract="false" name="DebtInstrumentMaturityDate1" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:gYearItemType"/>
  <xs:element id="aep_OCCStaffAndIntervenorRecommendedAnnualRevenueChangeRange" abstract="false" name="OCCStaffAndIntervenorRecommendedAnnualRevenueChangeRange" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_MaturityPeriod3Member" abstract="true" name="MaturityPeriod3Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisPolicyTextBlock" abstract="false" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_CCRInvestment" abstract="false" name="CCRInvestment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_AverageInterestRateForFundsLoaned" abstract="false" name="AverageInterestRateForFundsLoaned" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_KentuckyOperationsMember" abstract="true" name="KentuckyOperationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aep_ReclassificationOfKPCoPensionAndOPEBRegulatoryAssetsFromAOCIAxis" abstract="true" name="ReclassificationOfKPCoPensionAndOPEBRegulatoryAssetsFromAOCIAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_CommitmentFromBankConduitsToFinanceReceivablesTwo" abstract="false" name="CommitmentFromBankConduitsToFinanceReceivablesTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_FuelOverUnderRecoveryNet" abstract="false" name="FuelOverUnderRecoveryNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ReclassificationOfKPCoPensionAndOPEBRegulatoryAssetsFromAOCIDomain" abstract="true" name="ReclassificationOfKPCoPensionAndOPEBRegulatoryAssetsFromAOCIDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_TexasMember" abstract="true" name="TexasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_EffectiveIncomeTaxRateReconciliationParentCompanyLossBenefitPercentage" abstract="false" name="EffectiveIncomeTaxRateReconciliationParentCompanyLossBenefitPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_RegulatoryAssetsMember" abstract="true" name="RegulatoryAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_RegulatoryLiabilitiesMember" abstract="true" name="RegulatoryLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_ReversalofaRegulatoryProvision" abstract="false" name="ReversalofaRegulatoryProvision" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_After5YearsMember" abstract="true" name="After5YearsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_SpentNuclearFuelandDecommissioningTrustsMember" abstract="true" name="SpentNuclearFuelandDecommissioningTrustsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_DoletHillsGeneratingStationUnitNo1Member" abstract="true" name="DoletHillsGeneratingStationUnitNo1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_RequestedSecuritizationBondsDeferredStormCosts" abstract="false" name="RequestedSecuritizationBondsDeferredStormCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_MaximumValueOfSharesToBeIssuedUnderATMProgram" abstract="false" name="MaximumValueOfSharesToBeIssuedUnderATMProgram" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_DemandSideManagementProgramsMember" abstract="true" name="DemandSideManagementProgramsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_SeniorUnsecuredNotesSevenMember" abstract="true" name="SeniorUnsecuredNotesSevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_BPWindEnergyMember" abstract="true" name="BPWindEnergyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_FairValueMeasurements1TextualsAbstract" abstract="true" name="FairValueMeasurements1TextualsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_A2023IndianaBaseRateCaseMember" abstract="true" name="A2023IndianaBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aep_RiskManagementCommodityContractsMember" abstract="true" name="RiskManagementCommodityContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_A2023AltTwoMajorStormExpenseDeferrals" abstract="false" name="A2023AltTwoMajorStormExpenseDeferrals" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_DoletHillsPowerStationAndRelatedFuelOperationsMember" abstract="true" name="DoletHillsPowerStationAndRelatedFuelOperationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_NonutilityMember" abstract="true" name="NonutilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_DIRRevenueAmountAbove2019AuthorizedLimit" abstract="false" name="DIRRevenueAmountAbove2019AuthorizedLimit" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_UncommittedFacility" abstract="false" name="UncommittedFacility" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_MaximumMinimumandAverageInterestRatesforFundsBorrowedfromandLoanedtoAEPTableTextBlock" abstract="false" name="MaximumMinimumandAverageInterestRatesforFundsBorrowedfromandLoanedtoAEPTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_MaximumAndMinimumInterestRatesForFundsEitherBorrowedFromOrLoanedToUtilityMoneyPoolTextBlock" abstract="false" name="MaximumAndMinimumInterestRatesForFundsEitherBorrowedFromOrLoanedToUtilityMoneyPoolTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_OtherLongTermDebtTenMember" abstract="true" name="OtherLongTermDebtTenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_MaximumFuturePaymentsForLettersOfCreditAbstract" abstract="true" name="MaximumFuturePaymentsForLettersOfCreditAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_AppalachianConsumerRateReliefFundingMember" abstract="true" name="AppalachianConsumerRateReliefFundingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_IntervenorRecommendedReturnOnEquity" abstract="false" name="IntervenorRecommendedReturnOnEquity" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aep_TransmissionOperationsMember" abstract="true" name="TransmissionOperationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_CommitmentsGuaranteesAndContingenciesTextualsAbstract" abstract="true" name="CommitmentsGuaranteesAndContingenciesTextualsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_RequestedAnnualBaseRateIncrease" abstract="false" name="RequestedAnnualBaseRateIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_TotalLongTermDebtOutstandingDomain" abstract="true" name="TotalLongTermDebtOutstandingDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PaymentTimingAxis" abstract="true" name="PaymentTimingAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_RestrictedStockUnitsandPerformanceShareUnitsMember" abstract="true" name="RestrictedStockUnitsandPerformanceShareUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_StaffAndIntervenorRecommendedStormCostsRegulatoryAsset" abstract="false" name="StaffAndIntervenorRecommendedStormCostsRegulatoryAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="aep_RequestedSecuritizationBondsPlantRecoveryRetirementCosts" abstract="false" name="RequestedSecuritizationBondsPlantRecoveryRetirementCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_NorthCentralWindEnergyFacilitiesAxis" abstract="true" name="NorthCentralWindEnergyFacilitiesAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_GuaranteeObligationsCurrentCarryingValueOtherLiabilitiesCurrent" abstract="false" name="GuaranteeObligationsCurrentCarryingValueOtherLiabilitiesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_MezzanineEquity" abstract="false" name="MezzanineEquity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_FairValueMeasurementsTextualsAbstract" abstract="true" name="FairValueMeasurementsTextualsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_StaffRecommendedAnnualRateDecrease" abstract="false" name="StaffRecommendedAnnualRateDecrease" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_MaximumPercentageDebtToCapitalization" abstract="false" name="MaximumPercentageDebtToCapitalization" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_NotesPayableOtherPayablesSixMember" abstract="true" name="NotesPayableOtherPayablesSixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_CollateralTriggeringEventsAbstract" abstract="true" name="CollateralTriggeringEventsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_PollutionControlBondFourMember" abstract="true" name="PollutionControlBondFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_EquityDistributionAgreementMember" abstract="true" name="EquityDistributionAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_RequestedSecuritizationBondsUnderRecoveredPurchasedPowerRiderCosts" abstract="false" name="RequestedSecuritizationBondsUnderRecoveredPurchasedPowerRiderCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_PaymentTimingDomain" abstract="true" name="PaymentTimingDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_IndianaMichiganPowerCoMember" abstract="true" name="IndianaMichiganPowerCoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_DepreciationExpenseMember" abstract="true" name="DepreciationExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AffiliatedDividendsCommonStock" abstract="false" name="AffiliatedDividendsCommonStock" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ReclamationCostRevisionMember" abstract="true" name="ReclamationCostRevisionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_GrossAmountsOffsetInStatementOfFinancialPositionMember" abstract="true" name="GrossAmountsOffsetInStatementOfFinancialPositionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_IndianaEarningsTestFilingsMember" abstract="true" name="IndianaEarningsTestFilingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_TotalLongTermDebtDueWithinOneYearDomain" abstract="true" name="TotalLongTermDebtDueWithinOneYearDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AccruedReimbursementofSpentNuclearFuelCosts" abstract="false" name="AccruedReimbursementofSpentNuclearFuelCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ParentOwnershipInterestInETT" abstract="false" name="ParentOwnershipInterestInETT" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_AccumulatedProvisionsForRateRefunds" abstract="false" name="AccumulatedProvisionsForRateRefunds" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_DamagesRepresentingLostMiningFeesForSabine" abstract="false" name="DamagesRepresentingLostMiningFeesForSabine" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_EstimatedAlternativeCCRELGInvestment" abstract="false" name="EstimatedAlternativeCCRELGInvestment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_A2021And2022ENECFilingMember" abstract="true" name="A2021And2022ENECFilingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_LongTermDebtAndOtherSecuritiesIssuedRetiredAndPrincipalPaymentsMadeAbstract" abstract="true" name="LongTermDebtAndOtherSecuritiesIssuedRetiredAndPrincipalPaymentsMadeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_DomesticMember" abstract="true" name="DomesticMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_MaximumInterestRateforFundsBorrowed" abstract="false" name="MaximumInterestRateforFundsBorrowed" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_RequestedAnnualBaseRateStormLevelRestorationExpense" abstract="false" name="RequestedAnnualBaseRateStormLevelRestorationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_MaximumMinimumAverageInterestRatesForFundsBorrowedFromLoanedToNonutilityMoneyPoolTextBlock" abstract="false" name="MaximumMinimumAverageInterestRatesForFundsBorrowedFromLoanedToNonutilityMoneyPoolTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_UnprotectedExcessADITAmortizationPolicyPolicyTextBlock" abstract="false" name="UnprotectedExcessADITAmortizationPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_ReclassificationsFromAccumulatedOtherComprehensiveIncomeAbstract" abstract="true" name="ReclassificationsFromAccumulatedOtherComprehensiveIncomeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_IntervenorRecommendedOppositionToPurchasedPowerRecovery" abstract="false" name="IntervenorRecommendedOppositionToPurchasedPowerRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_OperatingLeaseCostRockport" abstract="false" name="OperatingLeaseCostRockport" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_RecommendedDisallowance" abstract="false" name="RecommendedDisallowance" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_NorthCentralWindEnergyFacilitiesDomain" abstract="true" name="NorthCentralWindEnergyFacilitiesDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_OklaunionPurchasePowerAgreementCurrent" abstract="false" name="OklaunionPurchasePowerAgreementCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_CorporateAlternativeMinimumTaxAxis" abstract="true" name="CorporateAlternativeMinimumTaxAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_OtherLongTermDebtEighteenMember" abstract="true" name="OtherLongTermDebtEighteenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AEPTexasInc.Member" abstract="true" name="AEPTexasInc.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_A2020LouisianaBaseRateCaseMember" abstract="true" name="A2020LouisianaBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AmortizationOfGenerationDeferrals" abstract="false" name="AmortizationOfGenerationDeferrals" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_RequestedNetIncreaseinTexasAnnualRevenues" abstract="false" name="RequestedNetIncreaseinTexasAnnualRevenues" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_IntervenorRecommendedWACC" abstract="false" name="IntervenorRecommendedWACC" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_AverageLoanstoMoneyPool" abstract="false" name="AverageLoanstoMoneyPool" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_MaximumBorrowingsfromMoneyPool" abstract="false" name="MaximumBorrowingsfromMoneyPool" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_A2023AltOneAnnualIncreaseInENEC" abstract="false" name="A2023AltOneAnnualIncreaseInENEC" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ProposedPreviouslyIncurredCostsExpectedToRecover" abstract="false" name="ProposedPreviouslyIncurredCostsExpectedToRecover" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ApprovedAdditionalVegetationManagementExpenses" abstract="false" name="ApprovedAdditionalVegetationManagementExpenses" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_GlenLynStationMember" abstract="true" name="GlenLynStationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_RegulatoryAssetReturnDisclosureAxis" abstract="true" name="RegulatoryAssetReturnDisclosureAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_EquityUnitsIssued" abstract="false" name="EquityUnitsIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="aep_EnterpriseValue" abstract="false" name="EnterpriseValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_UnearnedRevenue" abstract="false" name="UnearnedRevenue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_QuarterToDateMember" abstract="true" name="QuarterToDateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PJMPortionOfAnnualRevenueIncrease" abstract="false" name="PJMPortionOfAnnualRevenueIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_MaxPotentialLossonMasterLeaseAgreementsTableTextBlock" abstract="false" name="MaxPotentialLossonMasterLeaseAgreementsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_MaxPotentialLossOnMasterLeaseAgreements" abstract="false" name="MaxPotentialLossOnMasterLeaseAgreements" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_FERCMatterAxis" abstract="true" name="FERCMatterAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_TotalLongTermDebtAxis" abstract="true" name="TotalLongTermDebtAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_CostsBelowAuthorizedROEBandInBaseRateIncreaseRequest" abstract="false" name="CostsBelowAuthorizedROEBandInBaseRateIncreaseRequest" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_OtherLongTermDebtEightMember" abstract="true" name="OtherLongTermDebtEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_TotalLongTermDebtDueWithinOneYearAxis" abstract="true" name="TotalLongTermDebtDueWithinOneYearAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_GenerationAndMarketingMember" abstract="true" name="GenerationAndMarketingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AffiliatedLongTermDebtCurrent" abstract="false" name="AffiliatedLongTermDebtCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_A2022ApprovedOverallENECRateIncrease" abstract="false" name="A2022ApprovedOverallENECRateIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_MoneyPoolParticipantbyCompanyTypeAxis" abstract="true" name="MoneyPoolParticipantbyCompanyTypeAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_ProprosedESPReturnOnCommonEquity" abstract="false" name="ProprosedESPReturnOnCommonEquity" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_RateBaseMember" abstract="true" name="RateBaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_NonutilityMoneyPoolActivityTableTextBlock" abstract="false" name="NonutilityMoneyPoolActivityTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_StockholdersEquityASU201613Adoption" abstract="false" name="StockholdersEquityASU201613Adoption" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_NotesPayableOtherPayableTenMember" abstract="true" name="NotesPayableOtherPayableTenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_MaximumLoanstoMoneyPool" abstract="false" name="MaximumLoanstoMoneyPool" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_FlatRidgeIIMember" abstract="true" name="FlatRidgeIIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_RequestedNetAnnualIncrease" abstract="false" name="RequestedNetAnnualIncrease" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ResidentialMember" abstract="true" name="ResidentialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_MinimumInterestRate" abstract="false" name="MinimumInterestRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_A2023AltTwoAnnualIncreaseInENECRates" abstract="false" name="A2023AltTwoAnnualIncreaseInENECRates" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ForwardEquityPurchaseContractDate" abstract="false" name="ForwardEquityPurchaseContractDate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:gYearItemType"/>
  <xs:element id="aep_IntervenorRecommendedReturnOnCommonEquity" abstract="false" name="IntervenorRecommendedReturnOnCommonEquity" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_VariableInterestEntitiesAxis" abstract="true" name="VariableInterestEntitiesAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_MaximumPotentialAmountofFuturePaymentsAssociatedwithGuarantee" abstract="false" name="MaximumPotentialAmountofFuturePaymentsAssociatedwithGuarantee" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ConsolidatedAssetsAndLiabilitiesOfVariableInterestEntitiesTableTextBlock" abstract="false" name="ConsolidatedAssetsAndLiabilitiesOfVariableInterestEntitiesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_VariableInterestEntitiesTextualsAbstract" abstract="true" name="VariableInterestEntitiesTextualsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_AmountOfDoletHillsFuelCostsApprovedToRecover" abstract="false" name="AmountOfDoletHillsFuelCostsApprovedToRecover" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_FERCMatterDomain" abstract="true" name="FERCMatterDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_IndependenceEnergyConnectionProjectMember" abstract="true" name="IndependenceEnergyConnectionProjectMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_OklaunionPowerStationAcceleratedDepreciationMember" abstract="true" name="OklaunionPowerStationAcceleratedDepreciationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_CashCashEquivalentsandRestrictedCashAbstract" abstract="true" name="CashCashEquivalentsandRestrictedCashAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_MaximumInterestRateForFundsLoaned" abstract="false" name="MaximumInterestRateForFundsLoaned" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_EQMethodInvestments" abstract="false" name="EQMethodInvestments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_VirginiaERACMember" abstract="true" name="VirginiaERACMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PirkeyPowerPlantAndDoletHillsPowerStationMember" abstract="true" name="PirkeyPowerPlantAndDoletHillsPowerStationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aep_RegulatoryAssetsPendingFinalRegulatoryApprovalMember" abstract="true" name="RegulatoryAssetsPendingFinalRegulatoryApprovalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_A2023MichiganBaseRateCaseMember" abstract="true" name="A2023MichiganBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aep_AppalachianPowerCoMember" abstract="true" name="AppalachianPowerCoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_ApprovedAnnualRevenueIncrease" abstract="false" name="ApprovedAnnualRevenueIncrease" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_OhioValleyElectricCorporationMember" abstract="true" name="OhioValleyElectricCorporationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_StormExpensesToBeRequestedInSeparateFiling" abstract="false" name="StormExpensesToBeRequestedInSeparateFiling" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="aep_NotesPayableOtherPayableEightMember" abstract="true" name="NotesPayableOtherPayableEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_CommodityAbstract" abstract="true" name="CommodityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_RequestedEquityCapitalStructure" abstract="false" name="RequestedEquityCapitalStructure" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_OklahomaMember" abstract="true" name="OklahomaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_FairValueOfDerivativeLiabilitiesSubjectToCrossAccelerationProvisions" abstract="false" name="FairValueOfDerivativeLiabilitiesSubjectToCrossAccelerationProvisions" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_EquityMethodOwnershipDomain" abstract="true" name="EquityMethodOwnershipDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_IntervenorRecommendedOppositionToTaxRelatedRegulatoryAsset" abstract="false" name="IntervenorRecommendedOppositionToTaxRelatedRegulatoryAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_A2022OklahomaBaseRateCaseMember" abstract="true" name="A2022OklahomaBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PlantInServiceMember" abstract="true" name="PlantInServiceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_VoluntaryRetirementIncentiveProgramAbstract" abstract="true" name="VoluntaryRetirementIncentiveProgramAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_OtherVariousExpensesMember" abstract="true" name="OtherVariousExpensesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_CorporateAndOthrMember" abstract="true" name="CorporateAndOthrMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PlantRetirementCostsUnrecoveredPlantLouisianaMember" abstract="true" name="PlantRetirementCostsUnrecoveredPlantLouisianaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_ReverseCommonStockSplit" abstract="false" name="ReverseCommonStockSplit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_MaximumSharesIssuedUnderEquityUnitsConversion" abstract="false" name="MaximumSharesIssuedUnderEquityUnitsConversion" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="aep_CompetitiveContractedRenewablePortfolioMember" abstract="true" name="CompetitiveContractedRenewablePortfolioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_MaverickMember" abstract="true" name="MaverickMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_OpinionCoalFiredPlantsCapacityFactor" abstract="false" name="OpinionCoalFiredPlantsCapacityFactor" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_ExpensedRemainingClosedCoalPlant" abstract="false" name="ExpensedRemainingClosedCoalPlant" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_NotesPayableOtherPayableSevenMember" abstract="true" name="NotesPayableOtherPayableSevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AEPSharePriceforEquityUnitConversion" abstract="false" name="AEPSharePriceforEquityUnitConversion" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="aep_ExpectedReimbursementForSpentNuclearFuelDryCaskStorage" abstract="false" name="ExpectedReimbursementForSpentNuclearFuelDryCaskStorage" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_StaffRecommendedReturnOnCommonEquity" abstract="false" name="StaffRecommendedReturnOnCommonEquity" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_PretaxReductionInInvestmentBasis" abstract="false" name="PretaxReductionInInvestmentBasis" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_PollutionControlBondEightMember" abstract="true" name="PollutionControlBondEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AverageInterestRatesforFundsBorrowedFromandLoanedtoMoneyPoolAbstract" abstract="true" name="AverageInterestRatesforFundsBorrowedFromandLoanedtoMoneyPoolAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_NetOfAffiliatedProvisionsForRefundDomain" abstract="true" name="NetOfAffiliatedProvisionsForRefundDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_ApprovedDeferredStormCosts" abstract="false" name="ApprovedDeferredStormCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_GenerationAndMarketingRevenuesMember" abstract="true" name="GenerationAndMarketingRevenuesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PercentageofanAssetAcquired" abstract="false" name="PercentageofanAssetAcquired" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_EffectiveIncomeTaxRateReconciliationproductionandinvestmenttaxcredits" abstract="false" name="EffectiveIncomeTaxRateReconciliationproductionandinvestmenttaxcredits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_CompetitiveContractedRenewablesNBV" abstract="false" name="CompetitiveContractedRenewablesNBV" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_RenewableEnergyCredits" abstract="false" name="RenewableEnergyCredits" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_PollutionControlBondTwoMember" abstract="true" name="PollutionControlBondTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_ImpactofFairValueHedgesonBalanceSheetTableTextBlock" abstract="false" name="ImpactofFairValueHedgesonBalanceSheetTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_AmortizationOfNuclearFuel" abstract="false" name="AmortizationOfNuclearFuel" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_HeldForSaleMember" abstract="true" name="HeldForSaleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_DisallowanceItemDomain" abstract="true" name="DisallowanceItemDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_CorporateAlternativeMinimumTax" abstract="false" name="CorporateAlternativeMinimumTax" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_ETTInterimTransmissionRatesMember" abstract="true" name="ETTInterimTransmissionRatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_CumulativeFairValueHedgingAdjustmentintheCarryingAmountoftheHedgedAssetLiability" abstract="false" name="CumulativeFairValueHedgingAdjustmentintheCarryingAmountoftheHedgedAssetLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_RegulatoryAssetApprovedForRecoveryMember" abstract="true" name="RegulatoryAssetApprovedForRecoveryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_CreditFacilitiesStructured" abstract="false" name="CreditFacilitiesStructured" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ContestedJointAgreementBaseRateAnnualRevenueIncrease" abstract="false" name="ContestedJointAgreementBaseRateAnnualRevenueIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ChangeInRegulatoryAssets" abstract="false" name="ChangeInRegulatoryAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_RequestedReturnOnEquity" abstract="false" name="RequestedReturnOnEquity" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_SecuritizationBondsFourMember" abstract="true" name="SecuritizationBondsFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_ProvisionForRefundAffiliated" abstract="false" name="ProvisionForRefundAffiliated" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_SecuritiesActivityWithinDecommissioningAndSnfTrustsAbstract" abstract="true" name="SecuritiesActivityWithinDecommissioningAndSnfTrustsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_KentuckyDeferredPurchasePowerExpensesMember" abstract="true" name="KentuckyDeferredPurchasePowerExpensesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_CashCollateralNettingTableTextBlockTableTextBlock" abstract="false" name="CashCollateralNettingTableTextBlockTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_COVID19Member" abstract="true" name="COVID19Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_MutualFundsFixedIncomeMember" abstract="true" name="MutualFundsFixedIncomeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_IncomeTaxesTextualsAbstract" abstract="true" name="IncomeTaxesTextualsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_ProposedAdjustmentsAxis" abstract="true" name="ProposedAdjustmentsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_SeniorUnsecuredNotesMember" abstract="true" name="SeniorUnsecuredNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_LandfilleClosureRevisionMember" abstract="true" name="LandfilleClosureRevisionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_DoletHillsPowerStationFuelCostsLouisianaMember" abstract="true" name="DoletHillsPowerStationFuelCostsLouisianaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_OtherRetailMember" abstract="true" name="OtherRetailMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AlternativeMember" abstract="true" name="AlternativeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_A20202022VirginiaTriennialReviewMember" abstract="true" name="A20202022VirginiaTriennialReviewMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PrincipalAmountsOfJuniorSubordinatedDebt" abstract="false" name="PrincipalAmountsOfJuniorSubordinatedDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_A2023StaffAndIntervenorRecommendedCarryingCharges" abstract="false" name="A2023StaffAndIntervenorRecommendedCarryingCharges" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aep_AccountsReceivableAndAccruedUnbilledRevenuesTextBlock" abstract="false" name="AccountsReceivableAndAccruedUnbilledRevenuesTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_UtilityMoneyPoolParticipantsMoneyPoolActivityAndAuthorizedBorrowingLimitsTextBlock" abstract="false" name="UtilityMoneyPoolParticipantsMoneyPoolActivityAndAuthorizedBorrowingLimitsTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_IndustrialMember" abstract="true" name="IndustrialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_ProceedsForKYOperationsDomain" abstract="true" name="ProceedsForKYOperationsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AssetsAndLiabilitiesHeldForSaleRelatedToKPCo" abstract="false" name="AssetsAndLiabilitiesHeldForSaleRelatedToKPCo" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_RockportU2LeaseholdImprovementsNetBookValue" abstract="false" name="RockportU2LeaseholdImprovementsNetBookValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_AdjustedCostOfDebtSecurities" abstract="false" name="AdjustedCostOfDebtSecurities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_MoneyPoolParticipantsMoneyPoolActivityAndAuthorizedBorrowingLimitsAbstract" abstract="true" name="MoneyPoolParticipantsMoneyPoolActivityAndAuthorizedBorrowingLimitsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_VariableInterestCarryingAmountLiabilitiesAndEquityAbstract" abstract="true" name="VariableInterestCarryingAmountLiabilitiesAndEquityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_SeniorUnsecuredNotesTwelveMember" abstract="true" name="SeniorUnsecuredNotesTwelveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aep_MaterialsandSuppliesRelatedtoRetiredPlantsMember" abstract="true" name="MaterialsandSuppliesRelatedtoRetiredPlantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PotentialCumulativeENECUnderRecoveryDisallowance" abstract="false" name="PotentialCumulativeENECUnderRecoveryDisallowance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_BorrowingsfromParent" abstract="false" name="BorrowingsfromParent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ProposedRateAdjustmentsDomain" abstract="true" name="ProposedRateAdjustmentsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AdjustedCostOfEquitySecurities" abstract="false" name="AdjustedCostOfEquitySecurities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_EquityUnitsAnnualDistributionRate" abstract="false" name="EquityUnitsAnnualDistributionRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_EquityUnitsAxis" abstract="true" name="EquityUnitsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_RequestedSecuritizationBondsRegulatoryAssetsRecovery" abstract="false" name="RequestedSecuritizationBondsRegulatoryAssetsRecovery" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ImpairmentChargeWelshPlantUnit2" abstract="false" name="ImpairmentChargeWelshPlantUnit2" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_A2022RequestedIncreaseInENECRates" abstract="false" name="A2022RequestedIncreaseInENECRates" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_A2023ApprovedAnnualIncreaseInENECRates" abstract="false" name="A2023ApprovedAnnualIncreaseInENECRates" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_RestorationFundingMember" abstract="true" name="RestorationFundingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PotentialDisallowedCosts" abstract="false" name="PotentialDisallowedCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_EstimatedELGInvestment" abstract="false" name="EstimatedELGInvestment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_NetUncollectibleAccountsReceivableWrittenOff" abstract="false" name="NetUncollectibleAccountsReceivableWrittenOff" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_AEPGeneratingCompanyMember" abstract="true" name="AEPGeneratingCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_A2022ApprovedProjectedENECRateIncrease" abstract="false" name="A2022ApprovedProjectedENECRateIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_IntervenorRecommendedBaseRateVegetationManagementRemoval" abstract="false" name="IntervenorRecommendedBaseRateVegetationManagementRemoval" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_PirkeyPowerPlantAndSabineUnbilledFixedCosts" abstract="false" name="PirkeyPowerPlantAndSabineUnbilledFixedCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_NuclearFuelAndDecommissioningTrustsAbstract" abstract="true" name="NuclearFuelAndDecommissioningTrustsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_RequestedAnnualBaseRateIncresaeDepreciationExpensePortion" abstract="false" name="RequestedAnnualBaseRateIncresaeDepreciationExpensePortion" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_AEPTransmissionCoMember" abstract="true" name="AEPTransmissionCoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_OtherCashDepositsMember" abstract="true" name="OtherCashDepositsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_NotesPayableOtherPayableMember" abstract="true" name="NotesPayableOtherPayableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_NaturalGasExpensesAndPurchasesOfElectricityToBeRecoveredFromCustomersTableTextBlock" abstract="false" name="NaturalGasExpensesAndPurchasesOfElectricityToBeRecoveredFromCustomersTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_SundanceMember" abstract="true" name="SundanceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_SabineMiningCoMember" abstract="true" name="SabineMiningCoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_ApprovedCarryingCharge" abstract="false" name="ApprovedCarryingCharge" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_BadDebtReservesRelatedToSecuritizedSaleOfAccountsReceivable" abstract="false" name="BadDebtReservesRelatedToSecuritizedSaleOfAccountsReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_GrossAmountsOfRiskManagementAssetsLiabilitiesRecognizedMember" abstract="true" name="GrossAmountsOfRiskManagementAssetsLiabilitiesRecognizedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_A2020EquityUnitsMember" abstract="true" name="A2020EquityUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_OxbowMineRelatedCostsRecoveryRequest" abstract="false" name="OxbowMineRelatedCostsRecoveryRequest" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_CashCollateralNettingAbstract" abstract="true" name="CashCollateralNettingAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_TransourceEnergyMember" abstract="true" name="TransourceEnergyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_NetOfAffiliatedProvisionsForRefundAxis" abstract="true" name="NetOfAffiliatedProvisionsForRefundAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_DeferralOfIncrementalNuclearRefuelingOutageExpensesNet" abstract="false" name="DeferralOfIncrementalNuclearRefuelingOutageExpensesNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ProductionTaxCreditProceeds" abstract="false" name="ProductionTaxCreditProceeds" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_GuarantorObligationsCurrentCarryingValueContingentPortion" abstract="false" name="GuarantorObligationsCurrentCarryingValueContingentPortion" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ALJRecommendedDisallowance" abstract="false" name="ALJRecommendedDisallowance" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ApprovedNetIncreaseinTexasAnnualRevenues" abstract="false" name="ApprovedNetIncreaseinTexasAnnualRevenues" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_OCCStaffAndIntervenorRecommendedROERange" abstract="false" name="OCCStaffAndIntervenorRecommendedROERange" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_AssetRetirementObligationRelatedtoRetiredPlantsMember" abstract="true" name="AssetRetirementObligationRelatedtoRetiredPlantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AmountExceedingMaximumBorrowingsFromMoneyPool" abstract="false" name="AmountExceedingMaximumBorrowingsFromMoneyPool" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_CrossDefaultProvisionTextBlock" abstract="false" name="CrossDefaultProvisionTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_March2026Member" abstract="true" name="March2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PreferredStock2Member" abstract="true" name="PreferredStock2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AshPondClosureRevisionMember" abstract="true" name="AshPondClosureRevisionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_RenewableEnergyPortfolioStandardsCostsMember" abstract="true" name="RenewableEnergyPortfolioStandardsCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_TotalLongTermDebtDomain" abstract="true" name="TotalLongTermDebtDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_RecommendedDisallowancefromStafforIntervenors" abstract="false" name="RecommendedDisallowancefromStafforIntervenors" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_OtherLongTermDebtNineMember" abstract="true" name="OtherLongTermDebtNineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_VirginiaLegislationAffectingBiennialReviewsMember" abstract="true" name="VirginiaLegislationAffectingBiennialReviewsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AepCreditIncMember" abstract="true" name="AepCreditIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_RequestedFuelCostDeferral" abstract="false" name="RequestedFuelCostDeferral" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_AEPTransmissionHoldcoMember" abstract="true" name="AEPTransmissionHoldcoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AEPShareOfETTCumulativeRevenuesSubjectToReview" abstract="false" name="AEPShareOfETTCumulativeRevenuesSubjectToReview" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_AuthorizedAnnualBaseRateIncrease" abstract="false" name="AuthorizedAnnualBaseRateIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_SecuritizationBondsTwoMember" abstract="true" name="SecuritizationBondsTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_OtherLongTermDebtSixMember" abstract="true" name="OtherLongTermDebtSixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_TotalLongTermDebtMember" abstract="true" name="TotalLongTermDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_TermLoan5Member" abstract="true" name="TermLoan5Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_TermLoan2Member" abstract="true" name="TermLoan2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_BasisOfAccountingTextBlock" abstract="false" name="BasisOfAccountingTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_OrganizationAndSummaryOfSignificantAccountingPoliciesTextualsAbstract" abstract="true" name="OrganizationAndSummaryOfSignificantAccountingPoliciesTextualsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_ReturnOnCommonEquityMember" abstract="true" name="ReturnOnCommonEquityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_NotesPayableOtherPayableNineMember" abstract="true" name="NotesPayableOtherPayableNineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_DccFuelMember" abstract="true" name="DccFuelMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_RevenuesFromRelatedPartiesNetOfProvisionsForRefund" abstract="false" name="RevenuesFromRelatedPartiesNetOfProvisionsForRefund" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ContestedJointAgreementReturnOnEquity" abstract="false" name="ContestedJointAgreementReturnOnEquity" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_ReductionInFuelCosts" abstract="false" name="ReductionInFuelCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_SubLimitofSecuredDebt" abstract="false" name="SubLimitofSecuredDebt" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_MaturityOfNetFairValueOfRiskManagementContractsPriorToCashCollateralAssetsOrLiabilities" abstract="false" name="MaturityOfNetFairValueOfRiskManagementContractsPriorToCashCollateralAssetsOrLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_CedarCreekProjectMember" abstract="true" name="CedarCreekProjectMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_IntervenorRecommendedAnnualIncrease" abstract="false" name="IntervenorRecommendedAnnualIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_CarryingCostsIncome" abstract="false" name="CarryingCostsIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_NorthCentralWindEnergyFacilitiesMember" abstract="true" name="NorthCentralWindEnergyFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_June2022StormCostsMember" abstract="true" name="June2022StormCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_TermLoan4Member" abstract="true" name="TermLoan4Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_OtherLongTermDebtSevenMember" abstract="true" name="OtherLongTermDebtSevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_HeatingOilAndGasolineContractMember" abstract="true" name="HeatingOilAndGasolineContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_DirectBorrowingActivityTableTextBlock" abstract="false" name="DirectBorrowingActivityTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_SeniorUnsecuredNotesElevenMember" abstract="true" name="SeniorUnsecuredNotesElevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aep_NotionalVolumeOfDerivativeInstrumentsAbstract" abstract="true" name="NotionalVolumeOfDerivativeInstrumentsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_EstablishmentOfRegulatoryAsset" abstract="false" name="EstablishmentOfRegulatoryAsset" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_BaseRateDomain" abstract="true" name="BaseRateDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AROAdditionalLiabilityIncurredMember" abstract="true" name="AROAdditionalLiabilityIncurredMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="aep_MobileGenerationLeasePaymentsMember" abstract="true" name="MobileGenerationLeasePaymentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="aep_ConesvilleGeneratingStationUnitNo4Member" abstract="true" name="ConesvilleGeneratingStationUnitNo4Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="aep_COVID19VirginiaMember" abstract="true" name="COVID19VirginiaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_OtherComprehensiveIncomeUnrealizedGainLossArisingDuringPeriodNetOfTax" abstract="false" name="OtherComprehensiveIncomeUnrealizedGainLossArisingDuringPeriodNetOfTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="aep_PaymentWhenPutInServiceMember" abstract="true" name="PaymentWhenPutInServiceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="aep_AccountsReceivableRetainedInterestAndPledgedAsCollateralLessUncollectibleAccounts" abstract="false" name="AccountsReceivableRetainedInterestAndPledgedAsCollateralLessUncollectibleAccounts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="aep_AEPTexasCumulativeRevenuesSubjectToReview" abstract="false" name="AEPTexasCumulativeRevenuesSubjectToReview" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_DoletHillsPowerStationAcceleratedDepreciationMember" abstract="true" name="DoletHillsPowerStationAcceleratedDepreciationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_OtherLongTermDebtThirteenMember" abstract="true" name="OtherLongTermDebtThirteenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_RenewableEnergyFacilitiesMember" abstract="true" name="RenewableEnergyFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_ChangesInFairValueAllocatedToRegulatedJurisdiction" abstract="false" name="ChangesInFairValueAllocatedToRegulatedJurisdiction" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_SharesPerEquityUnit" abstract="false" name="SharesPerEquityUnit" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="aep_InterestRateAbstract" abstract="true" name="InterestRateAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_PollutionControlBondSixMember" abstract="true" name="PollutionControlBondSixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_A2023AltOneUnderRecovery" abstract="false" name="A2023AltOneUnderRecovery" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ReclassificationIntoAccumulatedOtherComprehensiveIncomeAxis" abstract="true" name="ReclassificationIntoAccumulatedOtherComprehensiveIncomeAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_OtherRevenuesAffiliatedandNonaffiliatedMember" abstract="true" name="OtherRevenuesAffiliatedandNonaffiliatedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PurchasedElectricityFuelAndOtherConsumablesUsedForElectricGenerationMember" abstract="true" name="PurchasedElectricityFuelAndOtherConsumablesUsedForElectricGenerationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_OhioMember" abstract="true" name="OhioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_ImpairmentChargeDisallowedPlantInvestments" abstract="false" name="ImpairmentChargeDisallowedPlantInvestments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_CorporateUnitOwnershipShareOfAnEquityUnit" abstract="false" name="CorporateUnitOwnershipShareOfAnEquityUnit" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_RevisedRequestedNetAnnualIncrease" abstract="false" name="RevisedRequestedNetAnnualIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_AdditionalRecognizedExpensesConsistingPrimarilyofDepreciationandVegetationManagement" abstract="false" name="AdditionalRecognizedExpensesConsistingPrimarilyofDepreciationandVegetationManagement" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_MaximumPotentialLossAbstract" abstract="true" name="MaximumPotentialLossAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_DerivativeRiskManagementContractsGainLossRecognizedAsRegulatoryAssetLiability" abstract="false" name="DerivativeRiskManagementContractsGainLossRecognizedAsRegulatoryAssetLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_TransmissionandDistributionUtilitiesRevenuesMember" abstract="true" name="TransmissionandDistributionUtilitiesRevenuesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_RockFallsWindFacilityMember" abstract="true" name="RockFallsWindFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AEPTexasTransitionFundingandRestorationFundingMember" abstract="true" name="AEPTexasTransitionFundingandRestorationFundingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AmountOfIncreaseRelatedToAnnualAmortizationExpense" abstract="false" name="AmountOfIncreaseRelatedToAnnualAmortizationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_CrossAccelerationProvisionsMaximumThirdPartyObligationAmount" abstract="false" name="CrossAccelerationProvisionsMaximumThirdPartyObligationAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_CommitmentFromBankConduitsToFinanceReceivables" abstract="false" name="CommitmentFromBankConduitsToFinanceReceivables" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_SecuritizationBondsMember" abstract="true" name="SecuritizationBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_SeniorUnsecuredNotesTenMember" abstract="true" name="SeniorUnsecuredNotesTenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_DebtAndEquitySecuritiesWithinOtherTemporaryInvestmentsTextBlock" abstract="false" name="DebtAndEquitySecuritiesWithinOtherTemporaryInvestmentsTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_MaximumPotentialLeasePaymentsAEPROBargeandBoatLeases" abstract="false" name="MaximumPotentialLeasePaymentsAEPROBargeandBoatLeases" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ImpactOfCashFlowHedgesOnBalanceSheetAbstract" abstract="true" name="ImpactOfCashFlowHedgesOnBalanceSheetAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_InterimWACC" abstract="false" name="InterimWACC" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_NotesPayableOtherPayableFiveMember" abstract="true" name="NotesPayableOtherPayableFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PirkeyPowerPlantAndRelatedFuelOperationsMember" abstract="true" name="PirkeyPowerPlantAndRelatedFuelOperationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_VariableInterestEntitiesAbstract" abstract="true" name="VariableInterestEntitiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_EnvironmentalExpenseDeferralVirginiaMember" abstract="true" name="EnvironmentalExpenseDeferralVirginiaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_CorporateAlternativeMinimumTaxMember" abstract="true" name="CorporateAlternativeMinimumTaxMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_A2019EquityUnitsMember" abstract="true" name="A2019EquityUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_EmployeeBenefitsAndPensionAssets" abstract="false" name="EmployeeBenefitsAndPensionAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_OtherRevenuesMember" abstract="true" name="OtherRevenuesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_ProvisionForRefundNonaffiliated" abstract="false" name="ProvisionForRefundNonaffiliated" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_CompetitiveContractedRenewablesMember" abstract="true" name="CompetitiveContractedRenewablesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_NetAmountsOfAssetsLiabilitiesPresentedInStatementOfFinancialPositionMember" abstract="true" name="NetAmountsOfAssetsLiabilitiesPresentedInStatementOfFinancialPositionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_RequestedPurchasedPowerCostsNotRecoverableThroughFACRecovery" abstract="false" name="RequestedPurchasedPowerCostsNotRecoverableThroughFACRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_GuaranteeObligationsCurrentCarryingValueOtherLiabilitiesNoncurrent" abstract="false" name="GuaranteeObligationsCurrentCarryingValueOtherLiabilitiesNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_RequestedDebtCapitalStructure" abstract="false" name="RequestedDebtCapitalStructure" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_StaffCalculatedRevenueDeficiency" abstract="false" name="StaffCalculatedRevenueDeficiency" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_DerivativeNonmonetaryEnergyNotionalAmount" abstract="false" name="DerivativeNonmonetaryEnergyNotionalAmount" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:energyItemType"/>
  <xs:element id="aep_EmployeeBenefitsAndPensionObligations" abstract="false" name="EmployeeBenefitsAndPensionObligations" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_OtherTemporaryInvestmentsTextBlock" abstract="false" name="OtherTemporaryInvestmentsTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="aep_WholesaleTransmissionMember" abstract="true" name="WholesaleTransmissionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AmountOfIncreaseRelatedToStormCatastropheReserve" abstract="false" name="AmountOfIncreaseRelatedToStormCatastropheReserve" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_CorporateAlternativeMinimumTaxDomain" abstract="true" name="CorporateAlternativeMinimumTaxDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_A2021CumulativeENECUnderRecovery" abstract="false" name="A2021CumulativeENECUnderRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_StormRelatedCostsLouisianaMember" abstract="true" name="StormRelatedCostsLouisianaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_RegulatoryAssetsCurrentlyNotEarningReturnMember" abstract="true" name="RegulatoryAssetsCurrentlyNotEarningReturnMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_PollutionControlBondNineMember" abstract="true" name="PollutionControlBondNineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_A2020OhioBaseRateCaseMember" abstract="true" name="A2020OhioBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_OVECICPARecommendedDisallowance" abstract="false" name="OVECICPARecommendedDisallowance" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_GeneratingUnitsProbableofAbandonmentMember" abstract="true" name="GeneratingUnitsProbableofAbandonmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_MichiganPowerSupplyCostRecoveryReconciliationMember" abstract="true" name="MichiganPowerSupplyCostRecoveryReconciliationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_TotalCommitmentFromBankConduitsToFinanceReceivables" abstract="false" name="TotalCommitmentFromBankConduitsToFinanceReceivables" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_TotalLongTermDebtDueWithinOneYrAxis" abstract="true" name="TotalLongTermDebtDueWithinOneYrAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_AmountOfApprovedIncreaseRelatedToStormCatastropheReserve" abstract="false" name="AmountOfApprovedIncreaseRelatedToStormCatastropheReserve" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_EffectiveIncomeTaxRateReconciliationAFUDCEquityPercentage" abstract="false" name="EffectiveIncomeTaxRateReconciliationAFUDCEquityPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="aep_CommercialMember" abstract="true" name="CommercialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_IntervenorRecommendedBaseRateDecreaseDepreciationExpense" abstract="false" name="IntervenorRecommendedBaseRateDecreaseDepreciationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_GainLossOnDispositionOfBusinessNetOfTax" abstract="false" name="GainLossOnDispositionOfBusinessNetOfTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_ProceedsForKYOperationsAxis" abstract="true" name="ProceedsForKYOperationsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_A2023StaffAndIntervenorRecommendedUnderRecovery" abstract="false" name="A2023StaffAndIntervenorRecommendedUnderRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_PirkeyGeneratingStationUnitNo1Member" abstract="true" name="PirkeyGeneratingStationUnitNo1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_ReclassificationIntoAccumulatedOtherComprehensiveIncomeDomain" abstract="true" name="ReclassificationIntoAccumulatedOtherComprehensiveIncomeDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_NotesPayableOtherPayableElevenMember" abstract="true" name="NotesPayableOtherPayableElevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_AcquisitionOfNuclearFuelIncludedInCurrentLiabilities" abstract="false" name="AcquisitionOfNuclearFuelIncludedInCurrentLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_StaffRecommendedAdjustmentsToCompaniesRequest" abstract="false" name="StaffRecommendedAdjustmentsToCompaniesRequest" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_AssetsAndLiabilitiesHeldForSaleAxis" abstract="true" name="AssetsAndLiabilitiesHeldForSaleAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aep_DerivativesAndHedgingTextualsAbstract" abstract="true" name="DerivativesAndHedgingTextualsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_PollutionControlBondSevenMember" abstract="true" name="PollutionControlBondSevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_ChangesInAccumulatedOtherComprehensiveIncomeByComponentAbstract" abstract="true" name="ChangesInAccumulatedOtherComprehensiveIncomeByComponentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_PollutionControlBondThreeMember" abstract="true" name="PollutionControlBondThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_CurrentCumulativeENECUnderRecovery" abstract="false" name="CurrentCumulativeENECUnderRecovery" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_MaximumAndMinimumInterestRatesAbstract" abstract="true" name="MaximumAndMinimumInterestRatesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aep_AffiliatedLongTermDebtNoncurrent" abstract="false" name="AffiliatedLongTermDebtNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aep_NotesPayableOtherPayableThreeMember" abstract="true" name="NotesPayableOtherPayableThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="aep_WelshPlantUnit2Member" abstract="true" name="WelshPlantUnit2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
</xs:schema>
