<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2024 Workiva-->
<!--r:049d23e4-5d2d-4a8d-b13f-1ddf0aafe0d9,g:99e8a105-1352-4639-8a1e-e0b2a3436e11-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:tve="http://www.tva.gov/20240630" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types1="http://www.xbrl.org/dtr/type/2020-01-21" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2022-03-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.tva.gov/20240630">
  <xs:import namespace="http://fasb.org/srt/2024" schemaLocation="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2024" schemaLocation="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd"/>
  <xs:import namespace="http://www.w3.org/1999/xlink" schemaLocation="http://www.xbrl.org/2003/xlink-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2022-03-31" schemaLocation="https://www.xbrl.org/dtr/type/2022-03-31/types.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2024" schemaLocation="https://xbrl.sec.gov/dei/2024/dei-2024.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2024" schemaLocation="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/stpr/2024" schemaLocation="https://xbrl.sec.gov/stpr/2024/stpr-2024.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="tve-20240630_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="tve-20240630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="tve-20240630_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="tve-20240630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="DEIDocument" roleURI="http://www.tva.gov/role/DEIDocument">
        <link:definition>0000001 - Document - DEI Document</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFOPERATIONSUNAUDITED" roleURI="http://www.tva.gov/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSUNAUDITED">
        <link:definition>9952151 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMELOSSUNAUDITED" roleURI="http://www.tva.gov/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMELOSSUNAUDITED">
        <link:definition>9952152 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDBALANCESHEETSUNAUDITED" roleURI="http://www.tva.gov/role/CONSOLIDATEDBALANCESHEETSUNAUDITED">
        <link:definition>9952153 - Statement - CONSOLIDATED BALANCE SHEETS (UNAUDITED)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFCASHFLOWSUNAUDITED" roleURI="http://www.tva.gov/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWSUNAUDITED">
        <link:definition>9952154 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFCHANGESINPROPRIETARYCAPITALUNAUDITED" roleURI="http://www.tva.gov/role/CONSOLIDATEDSTATEMENTSOFCHANGESINPROPRIETARYCAPITALUNAUDITED">
        <link:definition>9952155 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN PROPRIETARY CAPITAL (UNAUDITED)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalCashFlowInformationStatement" roleURI="http://www.tva.gov/role/SupplementalCashFlowInformationStatement">
        <link:definition>9952156 - Statement - Supplemental Cash Flow Information Statement</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StatementofCashFlowsSupplementalDisclosures" roleURI="http://www.tva.gov/role/StatementofCashFlowsSupplementalDisclosures">
        <link:definition>9952157 - Statement - Statement of Cash Flows, Supplemental Disclosures</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesTextBlock" roleURI="http://www.tva.gov/role/SummaryofSignificantAccountingPoliciesTextBlock">
        <link:definition>9952158 - Disclosure - Summary of Significant Accounting Policies (Text Block)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ImpactofNewAccountingStandardsandInterpretationsTextBlock" roleURI="http://www.tva.gov/role/ImpactofNewAccountingStandardsandInterpretationsTextBlock">
        <link:definition>9952159 - Disclosure - Impact of New Accounting Standards and Interpretations (Text Block)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsReceivableNetTextBlock" roleURI="http://www.tva.gov/role/AccountsReceivableNetTextBlock">
        <link:definition>9952160 - Disclosure - Accounts Receivable, Net (Text Block)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesNetTextBlock" roleURI="http://www.tva.gov/role/InventoriesNetTextBlock">
        <link:definition>9952161 - Disclosure - Inventories, Net (Text Block)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DeferredCostsCapitalizedPrepaidandOtherAssetsTextBlock" roleURI="http://www.tva.gov/role/DeferredCostsCapitalizedPrepaidandOtherAssetsTextBlock">
        <link:definition>9952162 - Disclosure - Deferred Costs, Capitalized, Prepaid, and Other Assets (Text Block)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PlantClosuresTextBlock" roleURI="http://www.tva.gov/role/PlantClosuresTextBlock">
        <link:definition>9952163 - Disclosure - Plant Closures (Text Block)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherLongTermAssetsTextBlock" roleURI="http://www.tva.gov/role/OtherLongTermAssetsTextBlock">
        <link:definition>9952164 - Disclosure - Other Long-Term Assets (Text Block)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RegulatoryAssetsandLiabilities" roleURI="http://www.tva.gov/role/RegulatoryAssetsandLiabilities">
        <link:definition>9952165 - Disclosure - Regulatory Assets and Liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="VariableInterestEntities" roleURI="http://www.tva.gov/role/VariableInterestEntities">
        <link:definition>9952166 - Disclosure - Variable Interest Entities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherLongTermLiabilities" roleURI="http://www.tva.gov/role/OtherLongTermLiabilities">
        <link:definition>9952167 - Disclosure - Other Long-Term Liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetRetirementObligations" roleURI="http://www.tva.gov/role/AssetRetirementObligations">
        <link:definition>9952168 - Disclosure - Asset Retirement Obligations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtandOtherObligations" roleURI="http://www.tva.gov/role/DebtandOtherObligations">
        <link:definition>9952169 - Disclosure - Debt and Other Obligations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccumulatedOtherComprehensiveIncomeLoss" roleURI="http://www.tva.gov/role/AccumulatedOtherComprehensiveIncomeLoss">
        <link:definition>9952170 - Disclosure - Accumulated Other Comprehensive Income (Loss)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RiskManagementActivitiesandDerivativeTransactions" roleURI="http://www.tva.gov/role/RiskManagementActivitiesandDerivativeTransactions">
        <link:definition>9952171 - Disclosure - Risk Management Activities and Derivative Transactions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurements" roleURI="http://www.tva.gov/role/FairValueMeasurements">
        <link:definition>9952172 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherIncomeExpenseNet" roleURI="http://www.tva.gov/role/OtherIncomeExpenseNet">
        <link:definition>9952173 - Disclosure - Other Income (Expense), Net</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BenefitPlans" roleURI="http://www.tva.gov/role/BenefitPlans">
        <link:definition>9952174 - Disclosure - Benefit Plans</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ContingenciesandLegalProceedings" roleURI="http://www.tva.gov/role/ContingenciesandLegalProceedings">
        <link:definition>9952175 - Disclosure - Contingencies and Legal Proceedings</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventNotes" roleURI="http://www.tva.gov/role/SubsequentEventNotes">
        <link:definition>9952176 - Disclosure - Subsequent Event (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GallatinCoalCombustionResidualFacilitiesNotes" roleURI="http://www.tva.gov/role/GallatinCoalCombustionResidualFacilitiesNotes">
        <link:definition>9952177 - Disclosure - Gallatin Coal Combustion Residual Facilities (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueNotes" roleURI="http://www.tva.gov/role/RevenueNotes">
        <link:definition>9952178 - Disclosure - Revenue (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesNotes" roleURI="http://www.tva.gov/role/LeasesNotes">
        <link:definition>9952179 - Disclosure - Leases (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ResearchandDevelopment" roleURI="http://www.tva.gov/role/ResearchandDevelopment">
        <link:definition>9952180 - Disclosure - Research and Development</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesPolicies" roleURI="http://www.tva.gov/role/SummaryofSignificantAccountingPoliciesPolicies">
        <link:definition>9954471 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountingChangesandErrorCorrectionsPolicies" roleURI="http://www.tva.gov/role/AccountingChangesandErrorCorrectionsPolicies">
        <link:definition>9954472 - Disclosure - Accounting Changes and Error Corrections (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DeferredCostsCapitalizedPrepaidandOtherAssetsPolicies" roleURI="http://www.tva.gov/role/DeferredCostsCapitalizedPrepaidandOtherAssetsPolicies">
        <link:definition>9954473 - Disclosure - Deferred Costs, Capitalized, Prepaid, and Other Assets (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DeferredCostsCapitalizedPrepaidandOtherAssetsPolicies_1" roleURI="http://www.tva.gov/role/DeferredCostsCapitalizedPrepaidandOtherAssetsPolicies_1">
        <link:definition>9954474 - Disclosure - Deferred Costs, Capitalized, Prepaid, and Other Assets (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="VariableInterestEntitiesPolicies" roleURI="http://www.tva.gov/role/VariableInterestEntitiesPolicies">
        <link:definition>9954475 - Disclosure - Variable Interest Entities (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GallatinCoalCombustionResidualFacilitiesRegulatoryAccountingTreatmentPolicies" roleURI="http://www.tva.gov/role/GallatinCoalCombustionResidualFacilitiesRegulatoryAccountingTreatmentPolicies">
        <link:definition>9954476 - Disclosure - Gallatin Coal Combustion Residual Facilities Regulatory Accounting Treatment (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesCashCashEquivalentsandRestrictedCashTables" roleURI="http://www.tva.gov/role/SummaryofSignificantAccountingPoliciesCashCashEquivalentsandRestrictedCashTables">
        <link:definition>9954477 - Disclosure - Summary of Significant Accounting Policies Cash, Cash Equivalents, and Restricted Cash (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ImpactofNewAccountingStandardsandInterpretationsImpactofNewAccountingStandardsandInterpretationsTables" roleURI="http://www.tva.gov/role/ImpactofNewAccountingStandardsandInterpretationsImpactofNewAccountingStandardsandInterpretationsTables">
        <link:definition>9954478 - Disclosure - Impact of New Accounting Standards and Interpretations Impact of New Accounting Standards and Interpretations (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsReceivableNetTables" roleURI="http://www.tva.gov/role/AccountsReceivableNetTables">
        <link:definition>9954479 - Disclosure - Accounts Receivable, Net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesNetTables" roleURI="http://www.tva.gov/role/InventoriesNetTables">
        <link:definition>9954480 - Disclosure - Inventories, Net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DeferredCostsCapitalizedPrepaidandOtherAssetsTables" roleURI="http://www.tva.gov/role/DeferredCostsCapitalizedPrepaidandOtherAssetsTables">
        <link:definition>9954481 - Disclosure - Deferred Costs, Capitalized, Prepaid, and Other Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PlantClosuresTables" roleURI="http://www.tva.gov/role/PlantClosuresTables">
        <link:definition>9954482 - Disclosure - Plant Closures (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherLongTermAssetsTables" roleURI="http://www.tva.gov/role/OtherLongTermAssetsTables">
        <link:definition>9954483 - Disclosure - Other Long-Term Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RegulatoryAssetsandLiabilitiesTables" roleURI="http://www.tva.gov/role/RegulatoryAssetsandLiabilitiesTables">
        <link:definition>9954484 - Disclosure - Regulatory Assets and Liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="VariableInterestEntitiesTables" roleURI="http://www.tva.gov/role/VariableInterestEntitiesTables">
        <link:definition>9954485 - Disclosure - Variable Interest Entities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherLongTermLiabilitiesTables" roleURI="http://www.tva.gov/role/OtherLongTermLiabilitiesTables">
        <link:definition>9954486 - Disclosure - Other Long-Term Liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetRetirementObligationsTables" roleURI="http://www.tva.gov/role/AssetRetirementObligationsTables">
        <link:definition>9954487 - Disclosure - Asset Retirement Obligations (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtandOtherObligationsTables" roleURI="http://www.tva.gov/role/DebtandOtherObligationsTables">
        <link:definition>9954488 - Disclosure - Debt and Other Obligations (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccumulatedOtherComprehensiveIncomeLossTables" roleURI="http://www.tva.gov/role/AccumulatedOtherComprehensiveIncomeLossTables">
        <link:definition>9954489 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RiskManagementActivitiesandDerivativeTransactionsTables" roleURI="http://www.tva.gov/role/RiskManagementActivitiesandDerivativeTransactionsTables">
        <link:definition>9954490 - Disclosure - Risk Management Activities and Derivative Transactions (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsTables" roleURI="http://www.tva.gov/role/FairValueMeasurementsTables">
        <link:definition>9954491 - Disclosure - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherIncomeExpenseNetTables" roleURI="http://www.tva.gov/role/OtherIncomeExpenseNetTables">
        <link:definition>9954492 - Disclosure - Other Income (Expense), Net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BenefitPlansTables" roleURI="http://www.tva.gov/role/BenefitPlansTables">
        <link:definition>9954493 - Disclosure - Benefit Plans (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventTables" roleURI="http://www.tva.gov/role/SubsequentEventTables">
        <link:definition>9954494 - Disclosure - Subsequent Event (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueTables" roleURI="http://www.tva.gov/role/RevenueTables">
        <link:definition>9954495 - Disclosure - Revenue (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueLocalPowerCompanyContractsTables" roleURI="http://www.tva.gov/role/RevenueLocalPowerCompanyContractsTables">
        <link:definition>9954496 - Disclosure - Revenue Local Power Company Contracts (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesTables" roleURI="http://www.tva.gov/role/LeasesTables">
        <link:definition>9954497 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ResearchandDevelopmentTables" roleURI="http://www.tva.gov/role/ResearchandDevelopmentTables">
        <link:definition>9954498 - Disclosure - Research and Development (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesGeneralandBasisofPresentationDetails" roleURI="http://www.tva.gov/role/SummaryofSignificantAccountingPoliciesGeneralandBasisofPresentationDetails">
        <link:definition>9954499 - Disclosure - Summary of Significant Accounting Policies General and Basis of Presentation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountingPoliciesCashandCashEquivalentsDetails" roleURI="http://www.tva.gov/role/AccountingPoliciesCashandCashEquivalentsDetails">
        <link:definition>9954500 - Disclosure - Accounting Policies Cash and Cash Equivalents (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesAllowanceforUncollectibleAccountsDetails" roleURI="http://www.tva.gov/role/SummaryofSignificantAccountingPoliciesAllowanceforUncollectibleAccountsDetails">
        <link:definition>9954501 - Disclosure - Summary of Significant Accounting Policies Allowance for Uncollectible Accounts (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesRevenuesDetails" roleURI="http://www.tva.gov/role/SummaryofSignificantAccountingPoliciesRevenuesDetails">
        <link:definition>9954502 - Disclosure - Summary of Significant Accounting Policies Revenues (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesDepreciationDetails" roleURI="http://www.tva.gov/role/SummaryofSignificantAccountingPoliciesDepreciationDetails">
        <link:definition>9954503 - Disclosure - Summary of Significant Accounting Policies Depreciation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ImpactofNewAccountingStandardsandInterpretationsImpactofNewAccountingStandardsandInterpretationsDetails" roleURI="http://www.tva.gov/role/ImpactofNewAccountingStandardsandInterpretationsImpactofNewAccountingStandardsandInterpretationsDetails">
        <link:definition>9954504 - Disclosure - Impact of New Accounting Standards and Interpretations Impact of New Accounting Standards and Interpretations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsReceivableNetDetails" roleURI="http://www.tva.gov/role/AccountsReceivableNetDetails">
        <link:definition>9954505 - Disclosure - Accounts Receivable, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesNetDetails" roleURI="http://www.tva.gov/role/InventoriesNetDetails">
        <link:definition>9954506 - Disclosure - Inventories, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DeferredCostsCapitalizedPrepaidandOtherAssetsDetails" roleURI="http://www.tva.gov/role/DeferredCostsCapitalizedPrepaidandOtherAssetsDetails">
        <link:definition>9954507 - Disclosure - Deferred Costs, Capitalized, Prepaid, and Other Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PlantClosuresDetails" roleURI="http://www.tva.gov/role/PlantClosuresDetails">
        <link:definition>9954508 - Disclosure - Plant Closures (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherLongTermAssetsDetails" roleURI="http://www.tva.gov/role/OtherLongTermAssetsDetails">
        <link:definition>9954509 - Disclosure - Other Long-Term Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RegulatoryAssetsandLiabilitiesDetails" roleURI="http://www.tva.gov/role/RegulatoryAssetsandLiabilitiesDetails">
        <link:definition>9954510 - Disclosure - Regulatory Assets and Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="VariableInterestEntitiesVariableInterestEntitiesDetails" roleURI="http://www.tva.gov/role/VariableInterestEntitiesVariableInterestEntitiesDetails">
        <link:definition>9954511 - Disclosure - Variable Interest Entities Variable Interest Entities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherLongTermLiabilitiesDetails" roleURI="http://www.tva.gov/role/OtherLongTermLiabilitiesDetails">
        <link:definition>9954512 - Disclosure - Other Long-Term Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetRetirementObligationsDetails" roleURI="http://www.tva.gov/role/AssetRetirementObligationsDetails">
        <link:definition>9954513 - Disclosure - Asset Retirement Obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtandOtherObligationsDebtOutstandingDetails" roleURI="http://www.tva.gov/role/DebtandOtherObligationsDebtOutstandingDetails">
        <link:definition>9954514 - Disclosure - Debt and Other Obligations Debt Outstanding (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtandOtherObligationsDebtSecuritiesActivityDetails" roleURI="http://www.tva.gov/role/DebtandOtherObligationsDebtSecuritiesActivityDetails">
        <link:definition>9954515 - Disclosure - Debt and Other Obligations Debt Securities Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtandOtherObligationsCreditFacilityAgreementsDetails" roleURI="http://www.tva.gov/role/DebtandOtherObligationsCreditFacilityAgreementsDetails">
        <link:definition>9954516 - Disclosure - Debt and Other Obligations Credit Facility Agreements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtandOtherObligationsLeaseLeasebackObligationsDetails" roleURI="http://www.tva.gov/role/DebtandOtherObligationsLeaseLeasebackObligationsDetails">
        <link:definition>9954517 - Disclosure - Debt and Other Obligations Lease/Leaseback Obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccumulatedOtherComprehensiveIncomeLossDetails" roleURI="http://www.tva.gov/role/AccumulatedOtherComprehensiveIncomeLossDetails">
        <link:definition>9954518 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RiskManagementActivitiesandDerivativeTransactionsDerivativeInstrumentsThatReceiveHedgeAccountingTreatmentDetails" roleURI="http://www.tva.gov/role/RiskManagementActivitiesandDerivativeTransactionsDerivativeInstrumentsThatReceiveHedgeAccountingTreatmentDetails">
        <link:definition>9954519 - Disclosure - Risk Management Activities and Derivative Transactions Derivative Instruments That Receive Hedge Accounting Treatment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RiskManagementActivitiesandDerivativeTransactionsDerivativeInstrumentsThatDoNotReceiveHedgeAccountingTreatmentDetails" roleURI="http://www.tva.gov/role/RiskManagementActivitiesandDerivativeTransactionsDerivativeInstrumentsThatDoNotReceiveHedgeAccountingTreatmentDetails">
        <link:definition>9954520 - Disclosure - Risk Management Activities and Derivative Transactions Derivative Instruments That Do Not Receive Hedge Accounting Treatment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RiskManagementActivitiesandDerivativeTransactionsFairValuesofTVADerivativesDetails" roleURI="http://www.tva.gov/role/RiskManagementActivitiesandDerivativeTransactionsFairValuesofTVADerivativesDetails">
        <link:definition>9954521 - Disclosure - Risk Management Activities and Derivative Transactions Fair Values of TVA Derivatives (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RiskManagementActivitiesandDerivativeTransactionsCurrencySwapsOutstandingDetails" roleURI="http://www.tva.gov/role/RiskManagementActivitiesandDerivativeTransactionsCurrencySwapsOutstandingDetails">
        <link:definition>9954522 - Disclosure - Risk Management Activities and Derivative Transactions Currency Swaps Outstanding (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RiskManagementActivitiesandDerivativeTransactionsDerivativesUnderFTPDetails" roleURI="http://www.tva.gov/role/RiskManagementActivitiesandDerivativeTransactionsDerivativesUnderFTPDetails">
        <link:definition>9954523 - Disclosure - Risk Management Activities and Derivative Transactions Derivatives Under FTP (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RiskManagementActivitiesandDerivativeTransactionsOffsettingofDerivativeAssetsDetails" roleURI="http://www.tva.gov/role/RiskManagementActivitiesandDerivativeTransactionsOffsettingofDerivativeAssetsDetails">
        <link:definition>9954524 - Disclosure - Risk Management Activities and Derivative Transactions Offsetting of Derivative Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RiskManagementActivitiesandDerivativeTransactionsOffsettingforDerivativeLiabilitiesDetails" roleURI="http://www.tva.gov/role/RiskManagementActivitiesandDerivativeTransactionsOffsettingforDerivativeLiabilitiesDetails">
        <link:definition>9954525 - Disclosure - Risk Management Activities and Derivative Transactions Offsetting for Derivative Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RiskManagementActivitiesandDerivativeTransactionsCollateralDetails" roleURI="http://www.tva.gov/role/RiskManagementActivitiesandDerivativeTransactionsCollateralDetails">
        <link:definition>9954526 - Disclosure - Risk Management Activities and Derivative Transactions Collateral (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RiskManagementActivitiesandDerivativeTransactionsCounterpartyCreditRiskDetails" roleURI="http://www.tva.gov/role/RiskManagementActivitiesandDerivativeTransactionsCounterpartyCreditRiskDetails">
        <link:definition>9954527 - Disclosure - Risk Management Activities and Derivative Transactions Counterparty Credit Risk (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RiskManagementActivitiesandDerivativeTransactionsCashFlowfromHedgingDetails" roleURI="http://www.tva.gov/role/RiskManagementActivitiesandDerivativeTransactionsCashFlowfromHedgingDetails">
        <link:definition>9954528 - Disclosure - Risk Management Activities and Derivative Transactions Cash Flow from Hedging (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsFairValueMeasurementsInvestmentsDetails" roleURI="http://www.tva.gov/role/FairValueMeasurementsFairValueMeasurementsInvestmentsDetails">
        <link:definition>9954529 - Disclosure - Fair Value Measurements Fair Value Measurements - Investments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsFairValueMeasurementsNonperformanceRiskDetails" roleURI="http://www.tva.gov/role/FairValueMeasurementsFairValueMeasurementsNonperformanceRiskDetails">
        <link:definition>9954530 - Disclosure - Fair Value Measurements Fair Value Measurements - Nonperformance Risk (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsFairValueMeasurementsDetails" roleURI="http://www.tva.gov/role/FairValueMeasurementsFairValueMeasurementsDetails">
        <link:definition>9954531 - Disclosure - Fair Value Measurements Fair Value Measurements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsFairValueMeasurementsUsingSignificantUnobservableInputsDetails" roleURI="http://www.tva.gov/role/FairValueMeasurementsFairValueMeasurementsUsingSignificantUnobservableInputsDetails">
        <link:definition>9954532 - Disclosure - Fair Value Measurements Fair Value Measurements Using Significant Unobservable Inputs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsEstimatedValuesofFinancialInstrumentsNotRecordedatFairValueDetails" roleURI="http://www.tva.gov/role/FairValueMeasurementsEstimatedValuesofFinancialInstrumentsNotRecordedatFairValueDetails">
        <link:definition>9954533 - Disclosure - Fair Value Measurements Estimated Values of Financial Instruments Not Recorded at Fair Value (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherIncomeExpenseNetDetails" roleURI="http://www.tva.gov/role/OtherIncomeExpenseNetDetails">
        <link:definition>9954534 - Disclosure - Other Income (Expense), Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BenefitPlansComponentsofBenefitPlansDetails" roleURI="http://www.tva.gov/role/BenefitPlansComponentsofBenefitPlansDetails">
        <link:definition>9954535 - Disclosure - Benefit Plans Components of Benefit Plans (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BenefitPlansComponentsofNetPeriodicBenefitCostDetails" roleURI="http://www.tva.gov/role/BenefitPlansComponentsofNetPeriodicBenefitCostDetails">
        <link:definition>9954536 - Disclosure - Benefit Plans Components of Net Periodic Benefit Cost (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BenefitPlansContributionsDetails" roleURI="http://www.tva.gov/role/BenefitPlansContributionsDetails">
        <link:definition>9954537 - Disclosure - Benefit Plans Contributions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ContingenciesandLegalProceedingsContingenciesDetails" roleURI="http://www.tva.gov/role/ContingenciesandLegalProceedingsContingenciesDetails">
        <link:definition>9954538 - Disclosure - Contingencies and Legal Proceedings Contingencies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ContingenciesandLegalProceedingsLegalProceedingsDetails" roleURI="http://www.tva.gov/role/ContingenciesandLegalProceedingsLegalProceedingsDetails">
        <link:definition>9954539 - Disclosure - Contingencies and Legal Proceedings Legal Proceedings (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventDetails" roleURI="http://www.tva.gov/role/SubsequentEventDetails">
        <link:definition>9954540 - Disclosure - Subsequent Event (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GallatinCoalCombustionResidualFacilitiesDetails" roleURI="http://www.tva.gov/role/GallatinCoalCombustionResidualFacilitiesDetails">
        <link:definition>9954541 - Disclosure - Gallatin Coal Combustion Residual Facilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueDetails" roleURI="http://www.tva.gov/role/RevenueDetails">
        <link:definition>9954542 - Disclosure - Revenue (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueCustomerTypeDetails" roleURI="http://www.tva.gov/role/RevenueCustomerTypeDetails">
        <link:definition>9954543 - Disclosure - Revenue Customer Type (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueEnergyPrepaymentAgreementDetails" roleURI="http://www.tva.gov/role/RevenueEnergyPrepaymentAgreementDetails">
        <link:definition>9954544 - Disclosure - Revenue Energy Prepayment Agreement (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuenoncashrevenueDetails" roleURI="http://www.tva.gov/role/RevenuenoncashrevenueDetails">
        <link:definition>9954545 - Disclosure - Revenue noncash revenue (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueUnpaidIncentivesDetails" roleURI="http://www.tva.gov/role/RevenueUnpaidIncentivesDetails">
        <link:definition>9954546 - Disclosure - Revenue Unpaid Incentives (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueLocalPowerCompanyContractsDetails" roleURI="http://www.tva.gov/role/RevenueLocalPowerCompanyContractsDetails">
        <link:definition>9954547 - Disclosure - Revenue Local Power Company Contracts (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesDetails" roleURI="http://www.tva.gov/role/LeasesDetails">
        <link:definition>9954548 - Disclosure - Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesLeaseCostsDetails" roleURI="http://www.tva.gov/role/LeasesLeaseCostsDetails">
        <link:definition>9954549 - Disclosure - Leases Lease Costs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesAmountsRecognizedonTVAsConsolidatedStatementsofCashFlowsDetails" roleURI="http://www.tva.gov/role/LeasesAmountsRecognizedonTVAsConsolidatedStatementsofCashFlowsDetails">
        <link:definition>9954550 - Disclosure - Leases Amounts Recognized on TVA's Consolidated Statements of Cash Flows (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesFutureMinimumLeasePaymentsDetails" roleURI="http://www.tva.gov/role/LeasesFutureMinimumLeasePaymentsDetails">
        <link:definition>9954551 - Disclosure - Leases Future Minimum Lease Payments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ResearchandDevelopmentDetails" roleURI="http://www.tva.gov/role/ResearchandDevelopmentDetails">
        <link:definition>9954552 - Disclosure - Research and Development (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="tve_AmountsRecognizedonTVAsConsolidatedBalanceSheetLineItems" abstract="true" name="AmountsRecognizedonTVAsConsolidatedBalanceSheetLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_OffsettingAssetsandLiabilitiesTableTextBlock" abstract="false" name="OffsettingAssetsandLiabilitiesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="tve_UnfundedLoanCommitments" abstract="false" name="UnfundedLoanCommitments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_ComponentsOfNetPeriodicBenefitCostAbstract" abstract="true" name="ComponentsOfNetPeriodicBenefitCostAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_NetPeriodicBenefitCostAsAcutariallyDetermined" abstract="false" name="NetPeriodicBenefitCostAsAcutariallyDetermined" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_OtherLongTermLiabilitiesTable" abstract="true" name="OtherLongTermLiabilitiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_Financeleaseasset" abstract="false" name="Financeleaseasset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_CumberlandMember" abstract="true" name="CumberlandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_NuclearLiabilityInsurance" abstract="false" name="NuclearLiabilityInsurance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_Commoditycontractderivativeliabilitiesfairvaluedisclosure" abstract="false" name="Commoditycontractderivativeliabilitiesfairvaluedisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_MaximumIdemnityIfCoveredAccidentTasksOrKeepsNuclearUnitOffline" abstract="false" name="MaximumIdemnityIfCoveredAccidentTasksOrKeepsNuclearUnitOffline" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_OtherLongTermAssetsAxis" abstract="true" name="OtherLongTermAssetsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_NumberOfLPCsSignedFlexibilityAgreement" abstract="false" name="NumberOfLPCsSignedFlexibilityAgreement" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tve_GovernmentDebtSecuritiesReclassed" abstract="false" name="GovernmentDebtSecuritiesReclassed" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_NdtMember" abstract="true" name="NdtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_Privatepartnershipsmeasuredatnetassetvalue" abstract="false" name="Privatepartnershipsmeasuredatnetassetvalue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_ReconciliationOfAssetRetirementObligationLiabilityDomain" abstract="true" name="ReconciliationOfAssetRetirementObligationLiabilityDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_LettersofCreditOutstandingAmount3" abstract="false" name="LettersofCreditOutstandingAmount3" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_TotalPowerProgramProprietaryCapital" abstract="false" name="TotalPowerProgramProprietaryCapital" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_AppropriationInvestmentPowerProgram" abstract="false" name="AppropriationInvestmentPowerProgram" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_PossibleadditionalfuturecostsforcompliancewithCCRrequirements" abstract="false" name="PossibleadditionalfuturecostsforcompliancewithCCRrequirements" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_CollateralAbstract" abstract="true" name="CollateralAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_EnergyRightMember" abstract="true" name="EnergyRightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_InterestPayableCurrentMember" abstract="true" name="InterestPayableCurrentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_DebtOutstandingTable" abstract="true" name="DebtOutstandingTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_OtherIncomeAndExpenseAxis" abstract="true" name="OtherIncomeAndExpenseAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_PossibleAdditionalFutureCostsForComplianceWithFinalLegacyCCRRuleRequirements" abstract="false" name="PossibleAdditionalFutureCostsForComplianceWithFinalLegacyCCRRuleRequirements" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_BillCreditsForLTA" abstract="false" name="BillCreditsForLTA" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_AmountsRecognizedonTVAsConsolidatedBalanceSheetTable" abstract="true" name="AmountsRecognizedonTVAsConsolidatedBalanceSheetTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_NumberOfProceduresForDeterminingEstimatesForCostsOfNuclearDecommissioning" abstract="false" name="NumberOfProceduresForDeterminingEstimatesForCostsOfNuclearDecommissioning" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tve_TotalPercentageOfOperatingRevenues" abstract="false" name="TotalPercentageOfOperatingRevenues" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="tve_NuclearDesommissioningCostsMember" abstract="true" name="NuclearDesommissioningCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_IndustriesdirectlyservedDomain" abstract="true" name="IndustriesdirectlyservedDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_AmountCapitalizedDueToActionsOfRegulator" abstract="false" name="AmountCapitalizedDueToActionsOfRegulator" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_RegulatoryAssetsAndLiabilitiesTable" abstract="true" name="RegulatoryAssetsAndLiabilitiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_ScheduleOfRegulatoryAssetsAndLiabilitiesTableTextBlock" abstract="false" name="ScheduleOfRegulatoryAssetsAndLiabilitiesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="tve_NonperformanceRiskAbstract" abstract="true" name="NonperformanceRiskAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_LongtermLineofCreditBorrowings1" abstract="false" name="LongtermLineofCreditBorrowings1" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_ForwardContractDerivativeAssetatFairValue" abstract="false" name="ForwardContractDerivativeAssetatFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_RemainingEmployerContributions" abstract="false" name="RemainingEmployerContributions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_VieFinancingAbstract" abstract="true" name="VieFinancingAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_CommingledFundsReclassed" abstract="false" name="CommingledFundsReclassed" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_AssociatedBondIssuesCurrencyExposure" abstract="false" name="AssociatedBondIssuesCurrencyExposure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_ReturnOnAppropriationInvestment" abstract="false" name="ReturnOnAppropriationInvestment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_RegulatoryAndOtherLongTermAssetsAbstract" abstract="true" name="RegulatoryAndOtherLongTermAssetsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_Privaterealestatemeasuredatnetassetvalue" abstract="false" name="Privaterealestatemeasuredatnetassetvalue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_DerivativesUnderFtpTable" abstract="true" name="DerivativesUnderFtpTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_Numberofcustomersthatrepresentthepercentofsales" abstract="false" name="Numberofcustomersthatrepresentthepercentofsales" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tve_AssessmentFromLicenseesForEachLicensedReactor" abstract="false" name="AssessmentFromLicenseesForEachLicensedReactor" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_ChangeInClosureLiabilities" abstract="false" name="ChangeInClosureLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_GeneratingUnitAxis" abstract="true" name="GeneratingUnitAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_NumberoflicensedreactorsinUS" abstract="false" name="NumberoflicensedreactorsinUS" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tve_RPMember" abstract="true" name="RPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tve_CashFlowfromHedgingAbstract" abstract="true" name="CashFlowfromHedgingAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_AmountOfInsuranceAvailableForLossAtAnyOneSiteTopRange" abstract="false" name="AmountOfInsuranceAvailableForLossAtAnyOneSiteTopRange" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_A10BillionNotionalInterestRateSwapMember" abstract="true" name="A10BillionNotionalInterestRateSwapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_OtherLongTermAssetsDomain" abstract="true" name="OtherLongTermAssetsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_LongTermProjectCostAccruals" abstract="false" name="LongTermProjectCostAccruals" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_Electricrevenue" abstract="false" name="Electricrevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_PurchasedPowerExpenseMember" abstract="true" name="PurchasedPowerExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_NuclearMember" abstract="true" name="NuclearMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_RevolvingCreditFacility4" abstract="false" name="RevolvingCreditFacility4" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_NonNuclearMember" abstract="true" name="NonNuclearMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_RevisionInAROEstimate" abstract="false" name="RevisionInAROEstimate" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_NonpowerProgramsAppropriationInvestmentNetMember" abstract="true" name="NonpowerProgramsAppropriationInvestmentNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_Definedbenefitplanplanassetsmonthlycontributionsbyemployer" abstract="false" name="Definedbenefitplanplanassetsmonthlycontributionsbyemployer" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_A2009SeriesBMember" abstract="true" name="A2009SeriesBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tve_RevolvingCreditFacility2" abstract="false" name="RevolvingCreditFacility2" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_ChangeinUnrealizedgainslossesonInterestRateDerivatives" abstract="false" name="ChangeinUnrealizedgainslossesonInterestRateDerivatives" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_EstimatedValuesOfFinancialIntrumentsNotRecordedAtFairValueAbstract" abstract="true" name="EstimatedValuesOfFinancialIntrumentsNotRecordedAtFairValueAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_FairValueByClassDomain" abstract="true" name="FairValueByClassDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_NumberOfRevolvingCreditFacilities" abstract="false" name="NumberOfRevolvingCreditFacilities" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tve_BorrowingsUnderUSTreasuryCreditFacility" abstract="false" name="BorrowingsUnderUSTreasuryCreditFacility" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_CreditOfCustomersMember" abstract="true" name="CreditOfCustomersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_Periodoftimewheretheinvestorcontributescapitaltoaninvestmentinaprivatepartnershipminimum" abstract="false" name="Periodoftimewheretheinvestorcontributescapitaltoaninvestmentinaprivatepartnershipminimum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tve_AcceleratedDepreciation" abstract="false" name="AcceleratedDepreciation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_MLGWsofoperatingrevenues" abstract="false" name="MLGWsofoperatingrevenues" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="tve_DerivativesUnderFinancialTradingProgramAxis" abstract="true" name="DerivativesUnderFinancialTradingProgramAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_ExpirationDateofSwap" abstract="false" name="ExpirationDateofSwap" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:gYearItemType"/>
  <xs:element id="tve_InvestmentByFundAxis" abstract="true" name="InvestmentByFundAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_SCCGMember" abstract="true" name="SCCGMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_DerivativesUnderFtpAbstract" abstract="true" name="DerivativesUnderFtpAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_GallatinFossilPlantMember" abstract="true" name="GallatinFossilPlantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tve_ExternalServices" abstract="false" name="ExternalServices" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_Periodoftimewheretheinvestorcontributescapitaltoaninvestmentinaprivatepartnershipmaximum" abstract="false" name="Periodoftimewheretheinvestorcontributescapitaltoaninvestmentinaprivatepartnershipmaximum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tve_HoldcoMember" abstract="true" name="HoldcoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_RegulatoryAssetAccountingTreatmentAbstract" abstract="true" name="RegulatoryAssetAccountingTreatmentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_Commingledfundsmeasuredatnetassetvalue" abstract="false" name="Commingledfundsmeasuredatnetassetvalue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_TotalLiabilities" abstract="false" name="TotalLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_OtherIncomeAndExpenseTable" abstract="true" name="OtherIncomeAndExpenseTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_GeneralMember" abstract="true" name="GeneralMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_NonNuclearDecommissioningMember" abstract="true" name="NonNuclearDecommissioningMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_RedemptionsAndMaturitiesAxis" abstract="true" name="RedemptionsAndMaturitiesAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_PossibleadditionalfuturecostsforcompliancewithCleanWaterrequirements." abstract="false" name="PossibleadditionalfuturecostsforcompliancewithCleanWaterrequirements." nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_AmountOfInsuranceAvailableForLossAtAnyOneSiteBottomRange" abstract="false" name="AmountOfInsuranceAvailableForLossAtAnyOneSiteBottomRange" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_UnrealizedLossesOnInterestRateDerivativesMember" abstract="true" name="UnrealizedLossesOnInterestRateDerivativesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_LongtermLineofCreditBorrowings2" abstract="false" name="LongtermLineofCreditBorrowings2" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_LineofCreditFacilityRemainingBorrowingCapacity1" abstract="false" name="LineofCreditFacilityRemainingBorrowingCapacity1" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_RemainingUnitsAxis" abstract="true" name="RemainingUnitsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_TotalAmountOfProtectionAvailable" abstract="false" name="TotalAmountOfProtectionAvailable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_PaidEconomicIncentives" abstract="false" name="PaidEconomicIncentives" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_A150MillionSterlingCurrencySwapMember" abstract="true" name="A150MillionSterlingCurrencySwapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_CurrencySwapsOutstandingAbstract" abstract="true" name="CurrencySwapsOutstandingAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_PreCommercialOpsCapitalizedRevenue" abstract="false" name="PreCommercialOpsCapitalizedRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_RetainedEarningsPowerProgram" abstract="false" name="RetainedEarningsPowerProgram" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_LettersofCreditOutstandingAmount1" abstract="false" name="LettersofCreditOutstandingAmount1" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_LettersofCreditOutstandingAmount4" abstract="false" name="LettersofCreditOutstandingAmount4" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_SummaryOfDerivativeInstrumentsThatReceiveHedgeAccountingTreatmentAbstract" abstract="true" name="SummaryOfDerivativeInstrumentsThatReceiveHedgeAccountingTreatmentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_RegulatoryAssetsAndLiabilitiesLineItems" abstract="true" name="RegulatoryAssetsAndLiabilitiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_PercentOfGenerationFlexibilityCredit" abstract="false" name="PercentOfGenerationFlexibilityCredit" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="tve_FuelExpenseMember" abstract="true" name="FuelExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_CounterpartyCreditRiskAbstract" abstract="true" name="CounterpartyCreditRiskAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_PrepaidCapitalAssets" abstract="false" name="PrepaidCapitalAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_RevenueAbstract" abstract="true" name="RevenueAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_InterestRateSwapCollateralMember" abstract="true" name="InterestRateSwapCollateralMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tve_ProprietaryCapital" abstract="false" name="ProprietaryCapital" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_OtherLongTermLiabilitiesLineItems" abstract="true" name="OtherLongTermLiabilitiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_NaturalGasBankingCounterpartiesCreditRating" abstract="false" name="NaturalGasBankingCounterpartiesCreditRating" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_PercentOfSalesOfElectricityToLPCs" abstract="false" name="PercentOfSalesOfElectricityToLPCs" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="tve_EconomicDevelopmentLoanSpecificLoanReserveMember" abstract="true" name="EconomicDevelopmentLoanSpecificLoanReserveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_OperatingleaseassetsnetofamortizationDomain" abstract="true" name="OperatingleaseassetsnetofamortizationDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_DiscounttoRevenueDomain" abstract="true" name="DiscounttoRevenueDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_ArtMember" abstract="true" name="ArtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_ReconciliationOfAssetRetirementObligationLiabilityTable" abstract="true" name="ReconciliationOfAssetRetirementObligationLiabilityTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_LpcsDomain" abstract="true" name="LpcsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_ComponentOfOtherIncomeExpenseLineItems" abstract="true" name="ComponentOfOtherIncomeExpenseLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_CommodityContractDerivativeAssetPolicyTextBlock" abstract="false" name="CommodityContractDerivativeAssetPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="tve_A250MillionSterlingCurrencySwapMember" abstract="true" name="A250MillionSterlingCurrencySwapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_DefinedBenefitPlanStructureAxis" abstract="true" name="DefinedBenefitPlanStructureAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_TwoLargestCustomerPercentageOfTotalOperatingRevenue" abstract="false" name="TwoLargestCustomerPercentageOfTotalOperatingRevenue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="tve_LineofCreditFacilityRemainingBorrowingCapacity3" abstract="false" name="LineofCreditFacilityRemainingBorrowingCapacity3" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_FuturesDomain" abstract="true" name="FuturesDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_A476MillionNotationalInterestRateSwapMember" abstract="true" name="A476MillionNotationalInterestRateSwapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tve_PowerProgramAppropriationInvestmentMember" abstract="true" name="PowerProgramAppropriationInvestmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_NumberOfReadilyAvailableQuotedExchangePricesForInvestments" abstract="false" name="NumberOfReadilyAvailableQuotedExchangePricesForInvestments" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tve_InterestSwapCollateralMember" abstract="true" name="InterestSwapCollateralMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_PrepaidSoftwareMaintenance" abstract="false" name="PrepaidSoftwareMaintenance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_LiabilitiesAndProprietaryCapitalAbstract" abstract="true" name="LiabilitiesAndProprietaryCapitalAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_AcquisitionOfLeaseholdInterestsInCombustionTurbineAssets" abstract="false" name="AcquisitionOfLeaseholdInterestsInCombustionTurbineAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_JsccgMember" abstract="true" name="JsccgMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_EstimatedValuesOfFinancialInstrumentsNotRecordedAtFairValueTableTextBlock" abstract="false" name="EstimatedValuesOfFinancialInstrumentsNotRecordedAtFairValueTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="tve_NuclearAccidentAssessmentLimitationPerYearPerUnit" abstract="false" name="NuclearAccidentAssessmentLimitationPerYearPerUnit" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_LongTermPowerBonds" abstract="false" name="LongTermPowerBonds" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_MaximumAssessmentPerNuclearIncident" abstract="false" name="MaximumAssessmentPerNuclearIncident" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_Privatecreditmeasuredatnetassetvalue" abstract="false" name="Privatecreditmeasuredatnetassetvalue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_RevolvingCreditFacility3" abstract="false" name="RevolvingCreditFacility3" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_A5yearterminationnoticeMember" abstract="true" name="A5yearterminationnoticeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_USCongressIsRequiredToTakeActionIfTheseLayesAreExhausted" abstract="false" name="USCongressIsRequiredToTakeActionIfTheseLayesAreExhausted" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tve_OtherIncomeAndExpenseTypesDomain" abstract="true" name="OtherIncomeAndExpenseTypesDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_PlantClosuresDisclosureTextBlock" abstract="false" name="PlantClosuresDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="tve_RevenueCustomerTypeAbstract" abstract="true" name="RevenueCustomerTypeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_DefinedBenefitPlansEmployerContributionsAbstract" abstract="true" name="DefinedBenefitPlansEmployerContributionsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_ServiceAgreementsPolicyTextBlock" abstract="false" name="ServiceAgreementsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="tve_Totallongdurationcontractrevenuerecognition" abstract="false" name="Totallongdurationcontractrevenuerecognition" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tve_OtherRegulatoryAmortizationAndDeferrals" abstract="false" name="OtherRegulatoryAmortizationAndDeferrals" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_SummaryOfDerivativeInstrumentsThatDoNotReceiveHedgeAccountingTreatmentAbstract" abstract="true" name="SummaryOfDerivativeInstrumentsThatDoNotReceiveHedgeAccountingTreatmentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_PercentOfWholesaleCreditOffered" abstract="false" name="PercentOfWholesaleCreditOffered" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="tve_FinancialInstrumentsOwnedMortgagesResidentialMortgagebackedandAssetbackedSecuritiesatFairValue" abstract="false" name="FinancialInstrumentsOwnedMortgagesResidentialMortgagebackedandAssetbackedSecuritiesatFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_DefinedContributionOnlyMemberDomain" abstract="true" name="DefinedContributionOnlyMemberDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_Financialinstrumentssubjecttomandatoryredemptioninterestratestatedpercentage" abstract="false" name="Financialinstrumentssubjecttomandatoryredemptioninterestratestatedpercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="tve_OtherLongTermAssetsLineItems" abstract="true" name="OtherLongTermAssetsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_SerpMember" abstract="true" name="SerpMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_GallatinCoalCombustionResidualsFacilitiesAbstract" abstract="true" name="GallatinCoalCombustionResidualsFacilitiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_PlantAxis" abstract="true" name="PlantAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_DeiAbstract" abstract="true" name="DeiAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_TotalNumberOfLPCs" abstract="false" name="TotalNumberOfLPCs" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tve_LineofCreditFacilityRemainingBorrowingCapacity2" abstract="false" name="LineofCreditFacilityRemainingBorrowingCapacity2" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_RetrospectivePremiums" abstract="false" name="RetrospectivePremiums" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_PowerProgramRetainedEarningsMember" abstract="true" name="PowerProgramRetainedEarningsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_BankingCounterpartiesCreditRating" abstract="false" name="BankingCounterpartiesCreditRating" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_PossibleAdditionalFutureCostsForComplianceWithCleanAirActRequirements" abstract="false" name="PossibleAdditionalFutureCostsForComplianceWithCleanAirActRequirements" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_LongTermLineOfCreditBorrowings3" abstract="false" name="LongTermLineOfCreditBorrowings3" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_RebatesMember" abstract="true" name="RebatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_EnergyRightLoanReserveMember" abstract="true" name="EnergyRightLoanReserveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_ReconciliationOfAssetRetirementObligationsLineItems" abstract="true" name="ReconciliationOfAssetRetirementObligationsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_LTDCPMember" abstract="true" name="LTDCPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_NumberOfLPCsSignedLTA" abstract="false" name="NumberOfLPCsSignedLTA" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tve_Minimuminvestmentperiod" abstract="false" name="Minimuminvestmentperiod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tve_LongtermLineofCreditBorrowings4" abstract="false" name="LongtermLineofCreditBorrowings4" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_OffSystemSalesofElectricity" abstract="false" name="OffSystemSalesofElectricity" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_ScheduleOfDerivativeInstrumentsCommodityContractsUnderFHPTableTextBlock" abstract="false" name="ScheduleOfDerivativeInstrumentsCommodityContractsUnderFHPTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="tve_PrivateCreditMember" abstract="true" name="PrivateCreditMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_DiscounttoRevenueAxis" abstract="true" name="DiscounttoRevenueAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_A20yearTerminationNoticeMember" abstract="true" name="A20yearTerminationNoticeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_FederalagenciesandotherDomain" abstract="true" name="FederalagenciesandotherDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_EconomicDevelopmentLoanCollectiveReserveMember" abstract="true" name="EconomicDevelopmentLoanCollectiveReserveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_FairValueByClassAxis" abstract="true" name="FairValueByClassAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_OtherNonCurrentRegulatoryAssetsMember" abstract="true" name="OtherNonCurrentRegulatoryAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_OperatingleaseassetsnetofamortizationAxis" abstract="true" name="OperatingleaseassetsnetofamortizationAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_InvestmentByFundDomain" abstract="true" name="InvestmentByFundDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tve_RedemptionsAndMaturitiesDomain" abstract="true" name="RedemptionsAndMaturitiesDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_DepreciationDomain" abstract="true" name="DepreciationDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_Numberofdaysindefault" abstract="false" name="Numberofdaysindefault" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="tve_RevolvingCreditFacility1" abstract="false" name="RevolvingCreditFacility1" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_PlantDomain" abstract="true" name="PlantDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tve_LetterofCreditOutstandingAmount2" abstract="false" name="LetterofCreditOutstandingAmount2" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_RemainingUnitsDomain" abstract="true" name="RemainingUnitsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_AccumulatedAdditionalDepreciation" abstract="false" name="AccumulatedAdditionalDepreciation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_NetExchangeGainFromCurrencyTransactionNoncurrent" abstract="false" name="NetExchangeGainFromCurrencyTransactionNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_DepreciationAxis" abstract="true" name="DepreciationAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_NESsOfOperatingRevenues" abstract="false" name="NESsOfOperatingRevenues" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="tve_PercentOfParValue" abstract="false" name="PercentOfParValue" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="tve_GeneratingUnitDomain" abstract="true" name="GeneratingUnitDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tve_PercentageOfTotalOperatingRevenues" abstract="false" name="PercentageOfTotalOperatingRevenues" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="tve_CumberlandFossilPlantMember" abstract="true" name="CumberlandFossilPlantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tve_AppropriationInvestmentNonpowerProgramsNet" abstract="false" name="AppropriationInvestmentNonpowerProgramsNet" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_A401KMember" abstract="true" name="A401KMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_NumberOfLicensedNuclearUnits" abstract="false" name="NumberOfLicensedNuclearUnits" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tve_LineofCreditFacilityRemainingBorrowingCapacity4" abstract="false" name="LineofCreditFacilityRemainingBorrowingCapacity4" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_Institutionalmutualfunds" abstract="false" name="Institutionalmutualfunds" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_PreCommercialOpsCapitalizedFuel" abstract="false" name="PreCommercialOpsCapitalizedFuel" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_OtherLongTermAssetsTable" abstract="true" name="OtherLongTermAssetsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_CommodityContractUnderFHPMember" abstract="true" name="CommodityContractUnderFHPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_ReconciliationOfAssetRetirementObligationLiabilityAxis" abstract="true" name="ReconciliationOfAssetRetirementObligationLiabilityAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="tve_UnpaidEconomicIncentives" abstract="false" name="UnpaidEconomicIncentives" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_AmountsRecognizedonTVAsConsolidatedStatementsofCashFlowsAbstract" abstract="true" name="AmountsRecognizedonTVAsConsolidatedStatementsofCashFlowsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_Maximumamountofretrospectivepremiums" abstract="false" name="Maximumamountofretrospectivepremiums" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tve_A2009SeriesBJunePaymentMember" abstract="true" name="A2009SeriesBJunePaymentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="tve_FairValueMeasurementsAbstract" abstract="true" name="FairValueMeasurementsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tve_ProprietaryCapitalAbstract" abstract="true" name="ProprietaryCapitalAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
</xs:schema>
