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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:a56e4f2b-8f7e-4571-b67f-02b639d35d8a,g:c7362dfe-469d-4311-a676-ad380ba595aa-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.pplelectric.com/role/DocumentandEntityInformation" xlink:type="simple" xlink:href="ppl-20250630.xsd#DocumentandEntityInformation"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/DocumentandEntityInformation" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:href="ppl-20250630.xsd#ppl_DocumentEntityInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DocumentEntityTable_55e49d59-bc60-40d6-bc6c-6ea5e0154439" xlink:href="ppl-20250630.xsd#ppl_DocumentEntityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_ppl_DocumentEntityTable_55e49d59-bc60-40d6-bc6c-6ea5e0154439" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f06d5c60-18b0-4232-81b8-d31e02a0e20c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_DocumentEntityTable_55e49d59-bc60-40d6-bc6c-6ea5e0154439" xlink:to="loc_dei_LegalEntityAxis_f06d5c60-18b0-4232-81b8-d31e02a0e20c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f06d5c60-18b0-4232-81b8-d31e02a0e20c_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f06d5c60-18b0-4232-81b8-d31e02a0e20c" xlink:to="loc_dei_EntityDomain_f06d5c60-18b0-4232-81b8-d31e02a0e20c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ac7d6200-05f3-4a6a-bad6-fda11516bf29" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f06d5c60-18b0-4232-81b8-d31e02a0e20c" xlink:to="loc_dei_EntityDomain_ac7d6200-05f3-4a6a-bad6-fda11516bf29" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_783ddba8-cfb0-47d3-b46e-e6fc5d61c659" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ac7d6200-05f3-4a6a-bad6-fda11516bf29" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_783ddba8-cfb0-47d3-b46e-e6fc5d61c659" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_070e17a9-b7b6-4cfd-be9c-ee634ffb162b" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ac7d6200-05f3-4a6a-bad6-fda11516bf29" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_070e17a9-b7b6-4cfd-be9c-ee634ffb162b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_a0e3161c-1dec-4442-8cb1-fe3f4555abc5" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ac7d6200-05f3-4a6a-bad6-fda11516bf29" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_a0e3161c-1dec-4442-8cb1-fe3f4555abc5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_a3961d3d-b78d-42f5-bacd-e2ea60c55bc7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_DocumentEntityTable_55e49d59-bc60-40d6-bc6c-6ea5e0154439" xlink:to="loc_us-gaap_StatementClassOfStockAxis_a3961d3d-b78d-42f5-bacd-e2ea60c55bc7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_a3961d3d-b78d-42f5-bacd-e2ea60c55bc7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_a3961d3d-b78d-42f5-bacd-e2ea60c55bc7" xlink:to="loc_us-gaap_ClassOfStockDomain_a3961d3d-b78d-42f5-bacd-e2ea60c55bc7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_d1fd76ce-3c10-463a-acd8-a62d5b2e626c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_a3961d3d-b78d-42f5-bacd-e2ea60c55bc7" xlink:to="loc_us-gaap_ClassOfStockDomain_d1fd76ce-3c10-463a-acd8-a62d5b2e626c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_3b3d8b0a-37b5-480b-8b6f-6b30ef33e825" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_d1fd76ce-3c10-463a-acd8-a62d5b2e626c" xlink:to="loc_us-gaap_CommonStockMember_3b3d8b0a-37b5-480b-8b6f-6b30ef33e825" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_A2013SeriesBDue2073Member_97d89985-52a1-492f-bd3f-82e43a6ae97e" xlink:href="ppl-20250630.xsd#ppl_A2013SeriesBDue2073Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_d1fd76ce-3c10-463a-acd8-a62d5b2e626c" xlink:to="loc_ppl_A2013SeriesBDue2073Member_97d89985-52a1-492f-bd3f-82e43a6ae97e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_A2007SeriesADue2067Member_1f14f113-703b-40ee-8a9b-0ca4bcf10057" xlink:href="ppl-20250630.xsd#ppl_A2007SeriesADue2067Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_d1fd76ce-3c10-463a-acd8-a62d5b2e626c" xlink:to="loc_ppl_A2007SeriesADue2067Member_1f14f113-703b-40ee-8a9b-0ca4bcf10057" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_24708db3-dd78-4225-b52b-c74f595bb9c9" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_Security12bTitle_24708db3-dd78-4225-b52b-c74f595bb9c9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_d9a991f2-0866-47b8-8c65-d39905ace444" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityShellCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntityShellCompany_d9a991f2-0866-47b8-8c65-d39905ace444" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_ffb6a182-073d-49dd-9c0a-834c80e2cc70" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntityInteractiveDataCurrent_ffb6a182-073d-49dd-9c0a-834c80e2cc70" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_c19fe649-7075-490d-989c-40d55a54c248" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntityFileNumber_c19fe649-7075-490d-989c-40d55a54c248" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_c0ea4a84-0179-4922-ad9c-1e468135718e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntityIncorporationStateCountryCode_c0ea4a84-0179-4922-ad9c-1e468135718e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EntityIncorporationStateCountryCode1_5f421c41-4a1a-419f-81ce-5bc8fea53614" xlink:href="ppl-20250630.xsd#ppl_EntityIncorporationStateCountryCode1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_ppl_EntityIncorporationStateCountryCode1_5f421c41-4a1a-419f-81ce-5bc8fea53614" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_11a434f0-ed2f-469f-bd1d-1084dbe9173d" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntityAddressAddressLine1_11a434f0-ed2f-469f-bd1d-1084dbe9173d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_96becc45-59e1-40d0-8d0f-62d223d6bfe0" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntityAddressCityOrTown_96becc45-59e1-40d0-8d0f-62d223d6bfe0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_4f96f386-b14f-462f-8d36-28e89fcc0aa4" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntityAddressStateOrProvince_4f96f386-b14f-462f-8d36-28e89fcc0aa4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_f3a1abc9-dff1-45bd-aa65-b5f994a83e66" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntityAddressPostalZipCode_f3a1abc9-dff1-45bd-aa65-b5f994a83e66" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_37718b04-4b08-4541-b962-081ef159dbb9" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_CityAreaCode_37718b04-4b08-4541-b962-081ef159dbb9" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_b1cec3e9-981c-4987-9997-f3d33b77e3d0" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_LocalPhoneNumber_b1cec3e9-981c-4987-9997-f3d33b77e3d0" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_cef866c7-24e8-4d63-8fa8-6d83b8cd756c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_DocumentType_cef866c7-24e8-4d63-8fa8-6d83b8cd756c" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_2349e64e-20bc-497d-b9fd-b8c9043d6e41" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_DocumentPeriodEndDate_2349e64e-20bc-497d-b9fd-b8c9043d6e41" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_c543325c-078d-4b17-842b-37bea1170c46" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_AmendmentFlag_c543325c-078d-4b17-842b-37bea1170c46" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_1f99190f-09a6-417f-b596-2758fef014fd" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntityRegistrantName_1f99190f-09a6-417f-b596-2758fef014fd" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_c26de63b-7171-4a22-8ab1-894aac063764" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntityTaxIdentificationNumber_c26de63b-7171-4a22-8ab1-894aac063764" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_3124a10e-67b2-4685-9df3-b9378b4aa9a3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntityCentralIndexKey_3124a10e-67b2-4685-9df3-b9378b4aa9a3" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_d3359af6-7835-455b-a1ba-014cac687ebd" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_CurrentFiscalYearEndDate_d3359af6-7835-455b-a1ba-014cac687ebd" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_33b05596-f695-4d82-93b5-654061bb09ca" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCurrentReportingStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntityCurrentReportingStatus_33b05596-f695-4d82-93b5-654061bb09ca" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_e40e3b83-6357-419f-9870-89a687a7ff1d" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFilerCategory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntityFilerCategory_e40e3b83-6357-419f-9870-89a687a7ff1d" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_a719b2bd-757b-42a9-8626-1ba9172ce3a5" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntityEmergingGrowthCompany_a719b2bd-757b-42a9-8626-1ba9172ce3a5" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_d4dc70d2-87c7-4e13-bff9-9a94078c024d" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntitySmallBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntitySmallBusiness_d4dc70d2-87c7-4e13-bff9-9a94078c024d" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_d0bc502e-0d85-4d41-834b-1efaf187884c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_d0bc502e-0d85-4d41-834b-1efaf187884c" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_96bfd11b-0c27-4ddf-a24c-68768ed17441" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFiscalYearFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_DocumentFiscalYearFocus_96bfd11b-0c27-4ddf-a24c-68768ed17441" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_5c935bfa-dc2e-40c1-b0a5-ce40091f131e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_DocumentFiscalPeriodFocus_5c935bfa-dc2e-40c1-b0a5-ce40091f131e" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentQuarterlyReport_e073fc93-5dc4-4c9f-ae30-6aabbabe6e75" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentQuarterlyReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_DocumentQuarterlyReport_e073fc93-5dc4-4c9f-ae30-6aabbabe6e75" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_86cb661d-49e9-43e2-bc05-b9a8e7e4262b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentTransitionReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_DocumentTransitionReport_86cb661d-49e9-43e2-bc05-b9a8e7e4262b" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_4daf9861-e5cc-4230-a8f9-62c561995706" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_TradingSymbol_4daf9861-e5cc-4230-a8f9-62c561995706" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_00a5a36a-4725-4827-b77a-acbaf80492ed" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DocumentEntityInformationLineItems_6086b982-f2d7-4952-881c-4cbce8d7ed90" xlink:to="loc_dei_SecurityExchangeName_00a5a36a-4725-4827-b77a-acbaf80492ed" xlink:type="arc" order="29"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFINCOMEUnaudited" xlink:type="simple" xlink:href="ppl-20250630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFINCOMEUnaudited"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFINCOMEUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_116b651d-5ad8-408f-a902-f825b2c1b95d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:to="loc_us-gaap_StatementTable_116b651d-5ad8-408f-a902-f825b2c1b95d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f6234438-453e-4bd1-9117-b9f152e36da3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_116b651d-5ad8-408f-a902-f825b2c1b95d" xlink:to="loc_dei_LegalEntityAxis_f6234438-453e-4bd1-9117-b9f152e36da3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f6234438-453e-4bd1-9117-b9f152e36da3_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f6234438-453e-4bd1-9117-b9f152e36da3" xlink:to="loc_dei_EntityDomain_f6234438-453e-4bd1-9117-b9f152e36da3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_969f3b21-ed66-42d2-881b-9c839e19bf4f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f6234438-453e-4bd1-9117-b9f152e36da3" xlink:to="loc_dei_EntityDomain_969f3b21-ed66-42d2-881b-9c839e19bf4f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_a0ad554a-3630-411f-b488-334a09467088" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_969f3b21-ed66-42d2-881b-9c839e19bf4f" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_a0ad554a-3630-411f-b488-334a09467088" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_c96822e3-2c66-4ced-a16a-6414150894f6" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_969f3b21-ed66-42d2-881b-9c839e19bf4f" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_c96822e3-2c66-4ced-a16a-6414150894f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_a57de1e9-60d1-4e28-b9c0-06f2964faab4" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_969f3b21-ed66-42d2-881b-9c839e19bf4f" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_a57de1e9-60d1-4e28-b9c0-06f2964faab4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_c9ccbf42-0d13-47cc-9ea8-65c7e46e1b9f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_116b651d-5ad8-408f-a902-f825b2c1b95d" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_c9ccbf42-0d13-47cc-9ea8-65c7e46e1b9f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_c9ccbf42-0d13-47cc-9ea8-65c7e46e1b9f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_c9ccbf42-0d13-47cc-9ea8-65c7e46e1b9f" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_c9ccbf42-0d13-47cc-9ea8-65c7e46e1b9f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_0b0fb17d-32f5-44e0-9b2c-44a28a3374be" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_c9ccbf42-0d13-47cc-9ea8-65c7e46e1b9f" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_0b0fb17d-32f5-44e0-9b2c-44a28a3374be" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_b8b6cb7f-bd50-4c71-9181-957b66275c4a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_0b0fb17d-32f5-44e0-9b2c-44a28a3374be" xlink:to="loc_us-gaap_ForeignExchangeContractMember_b8b6cb7f-bd50-4c71-9181-957b66275c4a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_fc240686-e5b2-4cc9-9174-c3fcedee37ae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_116b651d-5ad8-408f-a902-f825b2c1b95d" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_fc240686-e5b2-4cc9-9174-c3fcedee37ae" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_fc240686-e5b2-4cc9-9174-c3fcedee37ae_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_fc240686-e5b2-4cc9-9174-c3fcedee37ae" xlink:to="loc_us-gaap_HedgingRelationshipDomain_fc240686-e5b2-4cc9-9174-c3fcedee37ae_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_c8707586-a93c-43aa-b18d-8fd92c1d3592" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_fc240686-e5b2-4cc9-9174-c3fcedee37ae" xlink:to="loc_us-gaap_HedgingRelationshipDomain_c8707586-a93c-43aa-b18d-8fd92c1d3592" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EconomicHedgesMember_0fe16279-c9e7-49b2-a70f-a0c4802c860c" xlink:href="ppl-20250630.xsd#ppl_EconomicHedgesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_c8707586-a93c-43aa-b18d-8fd92c1d3592" xlink:to="loc_ppl_EconomicHedgesMember_0fe16279-c9e7-49b2-a70f-a0c4802c860c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f5e59c22-8f1f-4158-893c-c1d39436e936" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_116b651d-5ad8-408f-a902-f825b2c1b95d" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f5e59c22-8f1f-4158-893c-c1d39436e936" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_f5e59c22-8f1f-4158-893c-c1d39436e936_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f5e59c22-8f1f-4158-893c-c1d39436e936" xlink:to="loc_us-gaap_RelatedPartyDomain_f5e59c22-8f1f-4158-893c-c1d39436e936_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_21466c11-3716-4a77-b142-a438583326c6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f5e59c22-8f1f-4158-893c-c1d39436e936" xlink:to="loc_us-gaap_RelatedPartyDomain_21466c11-3716-4a77-b142-a438583326c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_63077f06-99b3-4829-8111-0fa2c5ad9b39" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_21466c11-3716-4a77-b142-a438583326c6" xlink:to="loc_us-gaap_RelatedPartyMember_63077f06-99b3-4829-8111-0fa2c5ad9b39" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonrelatedPartyMember_ba0facd5-5dc4-4306-aaea-2f511bb5d419" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonrelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_21466c11-3716-4a77-b142-a438583326c6" xlink:to="loc_us-gaap_NonrelatedPartyMember_ba0facd5-5dc4-4306-aaea-2f511bb5d419" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_d7a20af5-c4f6-4715-8130-5a0c1531d77c" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_116b651d-5ad8-408f-a902-f825b2c1b95d" xlink:to="loc_ppl_ByCompanyAxis_d7a20af5-c4f6-4715-8130-5a0c1531d77c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_d7a20af5-c4f6-4715-8130-5a0c1531d77c_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_d7a20af5-c4f6-4715-8130-5a0c1531d77c" xlink:to="loc_ppl_ByCompanyDomain_d7a20af5-c4f6-4715-8130-5a0c1531d77c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_2a29b1f0-4a4d-49e4-99bc-8a1beb9c3eed" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_d7a20af5-c4f6-4715-8130-5a0c1531d77c" xlink:to="loc_ppl_ByCompanyDomain_2a29b1f0-4a4d-49e4-99bc-8a1beb9c3eed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_898c7983-4f1a-4b2e-a83d-fc27069be526" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:to="loc_us-gaap_RevenuesAbstract_898c7983-4f1a-4b2e-a83d-fc27069be526" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatedOperatingRevenue_72e834eb-5b69-494b-bd82-689a2be356dd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatedOperatingRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_898c7983-4f1a-4b2e-a83d-fc27069be526" xlink:to="loc_us-gaap_RegulatedOperatingRevenue_72e834eb-5b69-494b-bd82-689a2be356dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_774c0042-f028-430b-8b5a-4736999a08b2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_898c7983-4f1a-4b2e-a83d-fc27069be526" xlink:to="loc_us-gaap_Revenues_774c0042-f028-430b-8b5a-4736999a08b2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpensesAbstract_b28d919d-b862-4491-9fa7-1a512545d6d4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:to="loc_us-gaap_OperatingExpensesAbstract_b28d919d-b862-4491-9fa7-1a512545d6d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilitiesOperatingExpenseAbstract_dc95c23e-432a-45f9-915d-a39a1e56af0b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UtilitiesOperatingExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b28d919d-b862-4491-9fa7-1a512545d6d4" xlink:to="loc_us-gaap_UtilitiesOperatingExpenseAbstract_dc95c23e-432a-45f9-915d-a39a1e56af0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FuelCosts_4d31c0e5-12f6-4608-9492-8b9ee4c4b47b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FuelCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilitiesOperatingExpenseAbstract_dc95c23e-432a-45f9-915d-a39a1e56af0b" xlink:to="loc_us-gaap_FuelCosts_4d31c0e5-12f6-4608-9492-8b9ee4c4b47b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PurchasedPowerAndGas_8ebb5d71-590a-4a51-8a2c-fe573cf6634e" xlink:href="ppl-20250630.xsd#ppl_PurchasedPowerAndGas"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilitiesOperatingExpenseAbstract_dc95c23e-432a-45f9-915d-a39a1e56af0b" xlink:to="loc_ppl_PurchasedPowerAndGas_8ebb5d71-590a-4a51-8a2c-fe573cf6634e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_UtilitiesOperatingExpensePurchasedPowerFromRelatedParties_6d260509-24e7-4522-a05a-3de56f2cf98d" xlink:href="ppl-20250630.xsd#ppl_UtilitiesOperatingExpensePurchasedPowerFromRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilitiesOperatingExpenseAbstract_dc95c23e-432a-45f9-915d-a39a1e56af0b" xlink:to="loc_ppl_UtilitiesOperatingExpensePurchasedPowerFromRelatedParties_6d260509-24e7-4522-a05a-3de56f2cf98d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses_3df5be8d-5332-45c5-bf30-c92168ba34e9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilitiesOperatingExpenseAbstract_dc95c23e-432a-45f9-915d-a39a1e56af0b" xlink:to="loc_us-gaap_UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses_3df5be8d-5332-45c5-bf30-c92168ba34e9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_d08dffad-856b-4ced-a877-790c517dc395" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilitiesOperatingExpenseAbstract_dc95c23e-432a-45f9-915d-a39a1e56af0b" xlink:to="loc_us-gaap_Depreciation_d08dffad-856b-4ced-a877-790c517dc395" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilitiesOperatingExpenseTaxes_8affeae3-0cc0-4752-a569-a64d6777c075" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UtilitiesOperatingExpenseTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b28d919d-b862-4491-9fa7-1a512545d6d4" xlink:to="loc_us-gaap_UtilitiesOperatingExpenseTaxes_8affeae3-0cc0-4752-a569-a64d6777c075" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilitiesOperatingExpense_9537961a-9e0d-4acc-afdc-8ced21788d5d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UtilitiesOperatingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b28d919d-b862-4491-9fa7-1a512545d6d4" xlink:to="loc_us-gaap_UtilitiesOperatingExpense_9537961a-9e0d-4acc-afdc-8ced21788d5d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_7a6c4c40-8807-4eac-b49b-08fbfb9c3e19" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:to="loc_us-gaap_OperatingIncomeLoss_7a6c4c40-8807-4eac-b49b-08fbfb9c3e19" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_5ffc08b9-72a9-480a-a349-fc16eeefe1aa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_5ffc08b9-72a9-480a-a349-fc16eeefe1aa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeOther_f56629c3-84e3-4dd3-997f-f64421d2e1a8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:to="loc_us-gaap_InterestIncomeOther_f56629c3-84e3-4dd3-997f-f64421d2e1a8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_c6dd3465-9445-428b-9d9f-d9b512657939" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:to="loc_us-gaap_InterestExpense_c6dd3465-9445-428b-9d9f-d9b512657939" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_0410980f-9f77-4f4d-beaf-2ad16949ba2a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_0410980f-9f77-4f4d-beaf-2ad16949ba2a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperations_b94a7fe3-ae72-453d-894b-1142133cf950" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperations_b94a7fe3-ae72-453d-894b-1142133cf950" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_3f6fe01d-a380-46e2-939a-bd0b13b9df7b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:to="loc_us-gaap_NetIncomeLoss_3f6fe01d-a380-46e2-939a-bd0b13b9df7b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_b2b38da1-a125-40fd-9019-408c385bba89" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:to="loc_us-gaap_EarningsPerShareAbstract_b2b38da1-a125-40fd-9019-408c385bba89" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_c8145fc9-2020-4f2d-bb49-4e2d59a1b138" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_b2b38da1-a125-40fd-9019-408c385bba89" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_c8145fc9-2020-4f2d-bb49-4e2d59a1b138" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_1f7f8111-86a0-4c1f-bc40-b977d57edd86" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_c8145fc9-2020-4f2d-bb49-4e2d59a1b138" xlink:to="loc_us-gaap_EarningsPerShareDiluted_1f7f8111-86a0-4c1f-bc40-b977d57edd86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_fdecb89d-ed9a-40bb-8992-6733afc096ab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_fdecb89d-ed9a-40bb-8992-6733afc096ab" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_9f0053ea-a1bb-4da9-9a4d-0814ebaf14f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_fdecb89d-ed9a-40bb-8992-6733afc096ab" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_9f0053ea-a1bb-4da9-9a4d-0814ebaf14f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_e8ebedcb-a292-465a-aeb3-56b6235753cd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_fdecb89d-ed9a-40bb-8992-6733afc096ab" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_e8ebedcb-a292-465a-aeb3-56b6235753cd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_99483551-0ca2-45a9-adf0-66f13d6a4617" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_99483551-0ca2-45a9-adf0-66f13d6a4617" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_38d1a4a6-252a-43f4-adc1-ab6d61ccf089" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsPerBasicShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_38d1a4a6-252a-43f4-adc1-ab6d61ccf089" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_63b34f14-bb60-4127-a16b-f288462c31d2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_daa9bb8a-a47b-46cf-8a96-68f7b8065ae2" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_63b34f14-bb60-4127-a16b-f288462c31d2" xlink:type="arc" order="13"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUnaudited" xlink:type="simple" xlink:href="ppl-20250630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUnaudited"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_381c01ea-92e5-4353-b83d-277820ccc8f6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_7377946f-311f-41aa-a668-9afa1e6aea6b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_381c01ea-92e5-4353-b83d-277820ccc8f6" xlink:to="loc_us-gaap_StatementTable_7377946f-311f-41aa-a668-9afa1e6aea6b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f5a4ae8d-b222-499f-b223-83536332db78" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_7377946f-311f-41aa-a668-9afa1e6aea6b" xlink:to="loc_dei_LegalEntityAxis_f5a4ae8d-b222-499f-b223-83536332db78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f5a4ae8d-b222-499f-b223-83536332db78_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f5a4ae8d-b222-499f-b223-83536332db78" xlink:to="loc_dei_EntityDomain_f5a4ae8d-b222-499f-b223-83536332db78_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_75813d17-18e3-4593-835c-eedb4429f6cd" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f5a4ae8d-b222-499f-b223-83536332db78" xlink:to="loc_dei_EntityDomain_75813d17-18e3-4593-835c-eedb4429f6cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_d41e551a-474b-4ce2-903a-b1557f78a29f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_381c01ea-92e5-4353-b83d-277820ccc8f6" xlink:to="loc_us-gaap_NetIncomeLoss_d41e551a-474b-4ce2-903a-b1557f78a29f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_aec8fae9-1609-4b29-a150-ba47a5060739" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_381c01ea-92e5-4353-b83d-277820ccc8f6" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_aec8fae9-1609-4b29-a150-ba47a5060739" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AmountsArisingDuringPeriodGainsLossesNetOfTaxExpenseBenefitAbstract_127cc0d2-9f5a-4228-b086-7bec41536d3c" xlink:href="ppl-20250630.xsd#ppl_AmountsArisingDuringPeriodGainsLossesNetOfTaxExpenseBenefitAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_aec8fae9-1609-4b29-a150-ba47a5060739" xlink:to="loc_ppl_AmountsArisingDuringPeriodGainsLossesNetOfTaxExpenseBenefitAbstract_127cc0d2-9f5a-4228-b086-7bec41536d3c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_2e36f6fb-de81-4117-8389-4aa556593ec7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AmountsArisingDuringPeriodGainsLossesNetOfTaxExpenseBenefitAbstract_127cc0d2-9f5a-4228-b086-7bec41536d3c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_2e36f6fb-de81-4117-8389-4aa556593ec7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_bc45dab0-bd3c-4bfe-877b-348e85959bf9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AmountsArisingDuringPeriodGainsLossesNetOfTaxExpenseBenefitAbstract_127cc0d2-9f5a-4228-b086-7bec41536d3c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_bc45dab0-bd3c-4bfe-877b-348e85959bf9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciEquityMethodInvestmentAfterTax_91d3d19c-527d-4001-98c6-a3944b4fd4e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OciEquityMethodInvestmentAfterTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AmountsArisingDuringPeriodGainsLossesNetOfTaxExpenseBenefitAbstract_127cc0d2-9f5a-4228-b086-7bec41536d3c" xlink:to="loc_us-gaap_OciEquityMethodInvestmentAfterTax_91d3d19c-527d-4001-98c6-a3944b4fd4e5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax_e31b31c0-24d8-497b-8aa7-10436c830f52" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AmountsArisingDuringPeriodGainsLossesNetOfTaxExpenseBenefitAbstract_127cc0d2-9f5a-4228-b086-7bec41536d3c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax_e31b31c0-24d8-497b-8aa7-10436c830f52" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTaxAbstract_e38b7758-dcc8-4cb4-8fea-61afa1879ca8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTaxAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AmountsArisingDuringPeriodGainsLossesNetOfTaxExpenseBenefitAbstract_127cc0d2-9f5a-4228-b086-7bec41536d3c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTaxAbstract_e38b7758-dcc8-4cb4-8fea-61afa1879ca8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_bec111ec-1655-48f3-a4b1-a449ac576781" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTaxAbstract_e38b7758-dcc8-4cb4-8fea-61afa1879ca8" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_bec111ec-1655-48f3-a4b1-a449ac576781" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherComprehensiveIncomeLossReclassificationsToNetIncomeLossNetOfTaxAbstract_66d07b0a-c15d-4e56-9c84-2e5f860acc89" xlink:href="ppl-20250630.xsd#ppl_OtherComprehensiveIncomeLossReclassificationsToNetIncomeLossNetOfTaxAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_aec8fae9-1609-4b29-a150-ba47a5060739" xlink:to="loc_ppl_OtherComprehensiveIncomeLossReclassificationsToNetIncomeLossNetOfTaxAbstract_66d07b0a-c15d-4e56-9c84-2e5f860acc89" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_e4b94d25-3845-4750-bbb8-880d8995b481" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherComprehensiveIncomeLossReclassificationsToNetIncomeLossNetOfTaxAbstract_66d07b0a-c15d-4e56-9c84-2e5f860acc89" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_e4b94d25-3845-4750-bbb8-880d8995b481" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract_a0797155-6703-41af-95b5-d409d1c9a46a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherComprehensiveIncomeLossReclassificationsToNetIncomeLossNetOfTaxAbstract_66d07b0a-c15d-4e56-9c84-2e5f860acc89" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract_a0797155-6703-41af-95b5-d409d1c9a46a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax_452ea26f-5533-4270-a0c6-cc4a24953881" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract_a0797155-6703-41af-95b5-d409d1c9a46a" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax_452ea26f-5533-4270-a0c6-cc4a24953881" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax_96f65807-d76c-4963-b50a-652218bbd15b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract_a0797155-6703-41af-95b5-d409d1c9a46a" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax_96f65807-d76c-4963-b50a-652218bbd15b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_9c6a2c92-c9ad-4ad3-8637-dc4791297214" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_aec8fae9-1609-4b29-a150-ba47a5060739" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_9c6a2c92-c9ad-4ad3-8637-dc4791297214" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_5fec6e1d-e7ad-4032-a767-421c888c61cf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_aec8fae9-1609-4b29-a150-ba47a5060739" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_5fec6e1d-e7ad-4032-a767-421c888c61cf" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherComprehensiveIncomeLossForeignCurrencyTranslationGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax_497ac35a-ae7e-432f-af47-47cdee4dfb16" xlink:href="ppl-20250630.xsd#ppl_OtherComprehensiveIncomeLossForeignCurrencyTranslationGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_381c01ea-92e5-4353-b83d-277820ccc8f6" xlink:to="loc_ppl_OtherComprehensiveIncomeLossForeignCurrencyTranslationGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax_497ac35a-ae7e-432f-af47-47cdee4dfb16" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax_f53b20fc-2044-47b0-b365-1a83590da913" xlink:href="ppl-20250630.xsd#ppl_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_381c01ea-92e5-4353-b83d-277820ccc8f6" xlink:to="loc_ppl_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax_f53b20fc-2044-47b0-b365-1a83590da913" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherComprehensiveIncomeLossDefinedBenefitPlanGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationAfterTax_710c4391-d73f-40ed-8cb1-1e2db1279432" xlink:href="ppl-20250630.xsd#ppl_OtherComprehensiveIncomeLossDefinedBenefitPlanGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationAfterTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_381c01ea-92e5-4353-b83d-277820ccc8f6" xlink:to="loc_ppl_OtherComprehensiveIncomeLossDefinedBenefitPlanGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationAfterTax_710c4391-d73f-40ed-8cb1-1e2db1279432" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherComprehensiveIncomeLossDefinedBenefitPlanPriorServiceCostCreditReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationAfterTax_70fb6f54-6568-4cef-b5a7-9a07e35784de" xlink:href="ppl-20250630.xsd#ppl_OtherComprehensiveIncomeLossDefinedBenefitPlanPriorServiceCostCreditReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationAfterTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_381c01ea-92e5-4353-b83d-277820ccc8f6" xlink:to="loc_ppl_OtherComprehensiveIncomeLossDefinedBenefitPlanPriorServiceCostCreditReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationAfterTax_70fb6f54-6568-4cef-b5a7-9a07e35784de" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUnauditedParenthetical" xlink:type="simple" xlink:href="ppl-20250630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUnauditedParenthetical"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUnauditedParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_16e977eb-ab51-4552-9bf7-8b0863dd9a18" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_fc0a6043-8c69-4023-8083-a3568f75f6c4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_16e977eb-ab51-4552-9bf7-8b0863dd9a18" xlink:to="loc_us-gaap_StatementTable_fc0a6043-8c69-4023-8083-a3568f75f6c4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8007b48c-edd5-4f4c-9bd4-43e309f53077" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_fc0a6043-8c69-4023-8083-a3568f75f6c4" xlink:to="loc_dei_LegalEntityAxis_8007b48c-edd5-4f4c-9bd4-43e309f53077" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8007b48c-edd5-4f4c-9bd4-43e309f53077_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8007b48c-edd5-4f4c-9bd4-43e309f53077" xlink:to="loc_dei_EntityDomain_8007b48c-edd5-4f4c-9bd4-43e309f53077_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_bcddcea3-dd17-4e04-9817-d16f838d3a02" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8007b48c-edd5-4f4c-9bd4-43e309f53077" xlink:to="loc_dei_EntityDomain_bcddcea3-dd17-4e04-9817-d16f838d3a02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax_d08ce560-7123-4609-b4bc-ca0c7987e03f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_16e977eb-ab51-4552-9bf7-8b0863dd9a18" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax_d08ce560-7123-4609-b4bc-ca0c7987e03f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax_524c4243-9ce0-4245-9264-0dad9f71f02c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_16e977eb-ab51-4552-9bf7-8b0863dd9a18" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax_524c4243-9ce0-4245-9264-0dad9f71f02c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax_c33c3945-b46e-4dc0-adc8-78357afdf913" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_16e977eb-ab51-4552-9bf7-8b0863dd9a18" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax_c33c3945-b46e-4dc0-adc8-78357afdf913" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax_debc1214-dff1-4d27-be52-a975734982e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_16e977eb-ab51-4552-9bf7-8b0863dd9a18" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax_debc1214-dff1-4d27-be52-a975734982e5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax_85aa8fe4-15a0-4c57-a68a-1c7033e21a68" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_16e977eb-ab51-4552-9bf7-8b0863dd9a18" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax_85aa8fe4-15a0-4c57-a68a-1c7033e21a68" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax_49f2bc87-c27c-4ff7-85b7-9b41b5b03696" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_16e977eb-ab51-4552-9bf7-8b0863dd9a18" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax_49f2bc87-c27c-4ff7-85b7-9b41b5b03696" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax_679ea78e-0d81-4ed8-a891-8e790b67d017" xlink:href="ppl-20250630.xsd#ppl_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_16e977eb-ab51-4552-9bf7-8b0863dd9a18" xlink:to="loc_ppl_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax_679ea78e-0d81-4ed8-a891-8e790b67d017" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherComprehensiveIncomeLossDefinedBenefitPlanPriorServiceCostCreditReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax_f3055562-b023-4aa9-8b08-a06cb3bea32f" xlink:href="ppl-20250630.xsd#ppl_OtherComprehensiveIncomeLossDefinedBenefitPlanPriorServiceCostCreditReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_16e977eb-ab51-4552-9bf7-8b0863dd9a18" xlink:to="loc_ppl_OtherComprehensiveIncomeLossDefinedBenefitPlanPriorServiceCostCreditReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax_f3055562-b023-4aa9-8b08-a06cb3bea32f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciEquityMethodInvestmentTax_55a22296-aa1a-4f2b-a0f5-7865fe24bdd2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OciEquityMethodInvestmentTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_16e977eb-ab51-4552-9bf7-8b0863dd9a18" xlink:to="loc_us-gaap_OciEquityMethodInvestmentTax_55a22296-aa1a-4f2b-a0f5-7865fe24bdd2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect_291a8ed0-36fb-4aab-94c3-b9e94e43b202" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_16e977eb-ab51-4552-9bf7-8b0863dd9a18" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect_291a8ed0-36fb-4aab-94c3-b9e94e43b202" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherComprehensiveIncomeLossDefinedBenefitPlanGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax_e7444004-e504-4fb9-8b2f-de9a047c62d8" xlink:href="ppl-20250630.xsd#ppl_OtherComprehensiveIncomeLossDefinedBenefitPlanGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_16e977eb-ab51-4552-9bf7-8b0863dd9a18" xlink:to="loc_ppl_OtherComprehensiveIncomeLossDefinedBenefitPlanGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax_e7444004-e504-4fb9-8b2f-de9a047c62d8" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherComprehensiveIncomeLossForeignCurrencyTranslationGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax_ca9954b7-983f-4030-adfd-d1fac6dd4703" xlink:href="ppl-20250630.xsd#ppl_OtherComprehensiveIncomeLossForeignCurrencyTranslationGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_16e977eb-ab51-4552-9bf7-8b0863dd9a18" xlink:to="loc_ppl_OtherComprehensiveIncomeLossForeignCurrencyTranslationGainLossReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax_ca9954b7-983f-4030-adfd-d1fac6dd4703" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUnaudited" xlink:type="simple" xlink:href="ppl-20250630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUnaudited"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_73a94701-166d-41fd-9df9-3d5ab3ec86d8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_8b48b68e-b7ed-4006-aab9-bf399c711860" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_73a94701-166d-41fd-9df9-3d5ab3ec86d8" xlink:to="loc_us-gaap_StatementTable_8b48b68e-b7ed-4006-aab9-bf399c711860" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_30dcd2c9-8c37-419e-85c5-9e5605109031" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_8b48b68e-b7ed-4006-aab9-bf399c711860" xlink:to="loc_dei_LegalEntityAxis_30dcd2c9-8c37-419e-85c5-9e5605109031" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_30dcd2c9-8c37-419e-85c5-9e5605109031_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_30dcd2c9-8c37-419e-85c5-9e5605109031" xlink:to="loc_dei_EntityDomain_30dcd2c9-8c37-419e-85c5-9e5605109031_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_131ab89e-4747-4007-95bb-c65ac691d276" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_30dcd2c9-8c37-419e-85c5-9e5605109031" xlink:to="loc_dei_EntityDomain_131ab89e-4747-4007-95bb-c65ac691d276" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_af50621a-af12-4397-ad29-86bd9bcb5723" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_131ab89e-4747-4007-95bb-c65ac691d276" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_af50621a-af12-4397-ad29-86bd9bcb5723" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_4859fb80-3901-4674-8edf-c2b6d60de9d2" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_131ab89e-4747-4007-95bb-c65ac691d276" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_4859fb80-3901-4674-8edf-c2b6d60de9d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_8ca3b436-4928-41da-9ece-c8bece91704c" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_131ab89e-4747-4007-95bb-c65ac691d276" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_8ca3b436-4928-41da-9ece-c8bece91704c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73a94701-166d-41fd-9df9-3d5ab3ec86d8" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_54f95c85-c3a9-4d17-811b-733e2fa212b5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_us-gaap_NetIncomeLoss_54f95c85-c3a9-4d17-811b-733e2fa212b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperations_2c777985-5e2a-4aa9-9bcf-443e0fb34736" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperations_2c777985-5e2a-4aa9-9bcf-443e0fb34736" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_e45647bd-fce4-45f8-b4c9-670f3509f8b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_us-gaap_Depreciation_e45647bd-fce4-45f8-b4c9-670f3509f8b7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentForAmortization_b25e5d38-557f-4820-902c-fd458363c194" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdjustmentForAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_us-gaap_AdjustmentForAmortization_b25e5d38-557f-4820-902c-fd458363c194" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash_aebca577-decb-4363-be7a-b62ef540cdfe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash_aebca577-decb-4363-be7a-b62ef540cdfe" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_1ac3bc3d-e842-466a-9240-5de0fee5bc70" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_1ac3bc3d-e842-466a-9240-5de0fee5bc70" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_Unrealizedgainsonderivativesandotherhedgingactivities_feb5cf6c-6024-4e8a-a1b3-ad620bb0a137" xlink:href="ppl-20250630.xsd#ppl_Unrealizedgainsonderivativesandotherhedgingactivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_ppl_Unrealizedgainsonderivativesandotherhedgingactivities_feb5cf6c-6024-4e8a-a1b3-ad620bb0a137" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWriteDown_4220e231-ec37-4fd5-813c-94803466fc65" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryWriteDown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_us-gaap_InventoryWriteDown_4220e231-ec37-4fd5-813c-94803466fc65" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_3c644658-35b4-4479-bc45-0463b86da0f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_3c644658-35b4-4479-bc45-0463b86da0f0" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_70f1d5de-63a4-4653-acef-8773b638de1d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_us-gaap_ShareBasedCompensation_70f1d5de-63a4-4653-acef-8773b638de1d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_af25aafc-90d3-4980-9ceb-9d8079027121" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_af25aafc-90d3-4980-9ceb-9d8079027121" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_d6c244aa-3e75-4a7b-98e7-edf95c1b7321" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNoncashIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_d6c244aa-3e75-4a7b-98e7-edf95c1b7321" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_54922414-3ed4-47e0-abae-1dc28fbc7260" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_54922414-3ed4-47e0-abae-1dc28fbc7260" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInReceivables_655a13cb-016a-4e12-8d0b-00c66fc69ea3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_54922414-3ed4-47e0-abae-1dc28fbc7260" xlink:to="loc_us-gaap_IncreaseDecreaseInReceivables_655a13cb-016a-4e12-8d0b-00c66fc69ea3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivableRelatedParties_4ee02925-9fdf-4ae9-840a-8bbd60eb4f28" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsReceivableRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_54922414-3ed4-47e0-abae-1dc28fbc7260" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivableRelatedParties_4ee02925-9fdf-4ae9-840a-8bbd60eb4f28" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableTrade_455fd697-3b9c-4b5d-8eaa-569fcb6f531d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsPayableTrade"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_54922414-3ed4-47e0-abae-1dc28fbc7260" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableTrade_455fd697-3b9c-4b5d-8eaa-569fcb6f531d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties_4150f9f0-64a2-4236-9bf5-501671e9fcd0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_54922414-3ed4-47e0-abae-1dc28fbc7260" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties_4150f9f0-64a2-4236-9bf5-501671e9fcd0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NetChangeUnbilledRevenues_ef442a72-ad9a-4ee2-9187-f3a21bc5e9a8" xlink:href="ppl-20250630.xsd#ppl_NetChangeUnbilledRevenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_54922414-3ed4-47e0-abae-1dc28fbc7260" xlink:to="loc_ppl_NetChangeUnbilledRevenues_ef442a72-ad9a-4ee2-9187-f3a21bc5e9a8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_a5bc33aa-2e7f-461e-ac5c-5e0d0f9f9567" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_54922414-3ed4-47e0-abae-1dc28fbc7260" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_a5bc33aa-2e7f-461e-ac5c-5e0d0f9f9567" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidExpense_ce0fcb29-fce0-4414-9c32-3628829b23b0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInPrepaidExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_54922414-3ed4-47e0-abae-1dc28fbc7260" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidExpense_ce0fcb29-fce0-4414-9c32-3628829b23b0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedTaxesPayable_5b8d76ac-15d7-4d8e-b37a-37ad175649ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccruedTaxesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_54922414-3ed4-47e0-abae-1dc28fbc7260" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedTaxesPayable_5b8d76ac-15d7-4d8e-b37a-37ad175649ce" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IncreaseDecreaseInCollateralOnPLREnergySupply_d7d412e4-ac36-48d2-8e53-8252d5cc88dc" xlink:href="ppl-20250630.xsd#ppl_IncreaseDecreaseInCollateralOnPLREnergySupply"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_54922414-3ed4-47e0-abae-1dc28fbc7260" xlink:to="loc_ppl_IncreaseDecreaseInCollateralOnPLREnergySupply_d7d412e4-ac36-48d2-8e53-8252d5cc88dc" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities_fdcf4ee5-649a-4cb0-aa37-13865997077b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_54922414-3ed4-47e0-abae-1dc28fbc7260" xlink:to="loc_us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities_fdcf4ee5-649a-4cb0-aa37-13865997077b" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInterestPayableNet_396ac861-51db-4551-9a9f-1b036d5cb406" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInInterestPayableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_54922414-3ed4-47e0-abae-1dc28fbc7260" xlink:to="loc_us-gaap_IncreaseDecreaseInInterestPayableNet_396ac861-51db-4551-9a9f-1b036d5cb406" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherCurrentLiabilities_9b4fe438-737b-409f-af08-f7d7e7d300af" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherCurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_54922414-3ed4-47e0-abae-1dc28fbc7260" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherCurrentLiabilities_9b4fe438-737b-409f-af08-f7d7e7d300af" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_d96ac466-3f88-453c-99cc-a182947022c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_54922414-3ed4-47e0-abae-1dc28fbc7260" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_d96ac466-3f88-453c-99cc-a182947022c7" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherOperatingActivitiesAbstract_eada1e73-c442-441b-bc8f-b56e8887b5cb" xlink:href="ppl-20250630.xsd#ppl_OtherOperatingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_ppl_OtherOperatingActivitiesAbstract_eada1e73-c442-441b-bc8f-b56e8887b5cb" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitContributions_8af0f181-d5a8-4814-b421-7a5b438b6b1e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionAndOtherPostretirementBenefitContributions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherOperatingActivitiesAbstract_eada1e73-c442-441b-bc8f-b56e8887b5cb" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitContributions_8af0f181-d5a8-4814-b421-7a5b438b6b1e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationCashPaidToSettle_79207a1f-0cae-47aa-90eb-2da9faddec6d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationCashPaidToSettle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherOperatingActivitiesAbstract_eada1e73-c442-441b-bc8f-b56e8887b5cb" xlink:to="loc_us-gaap_AssetRetirementObligationCashPaidToSettle_79207a1f-0cae-47aa-90eb-2da9faddec6d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_936def4e-0d8e-42c5-be5d-57d5cdcd335e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherOperatingActivitiesAbstract_eada1e73-c442-441b-bc8f-b56e8887b5cb" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_936def4e-0d8e-42c5-be5d-57d5cdcd335e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_139c59c7-7a71-467d-9e54-b71daa199559" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherOperatingActivitiesAbstract_eada1e73-c442-441b-bc8f-b56e8887b5cb" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_139c59c7-7a71-467d-9e54-b71daa199559" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_f72b2f6b-e345-43d7-a1e4-3a19b8cecba0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_f72b2f6b-e345-43d7-a1e4-3a19b8cecba0" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_836ae7c3-89c8-4028-92ab-4a233e025cbb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_836ae7c3-89c8-4028-92ab-4a233e025cbb" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d7b06791-bfae-4fb8-a471-d3122ce7a76f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8ebadcf7-fd41-4f25-bfb3-ad43088ed223" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d7b06791-bfae-4fb8-a471-d3122ce7a76f" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_26e3ba29-98e0-45db-9a29-531a94590b05" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73a94701-166d-41fd-9df9-3d5ab3ec86d8" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_26e3ba29-98e0-45db-9a29-531a94590b05" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_3e699c43-72d7-41a7-8a17-1778d00c4899" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_26e3ba29-98e0-45db-9a29-531a94590b05" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_3e699c43-72d7-41a7-8a17-1778d00c4899" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_564ad952-ab9c-4fed-a4ab-6b3f5f095708" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_26e3ba29-98e0-45db-9a29-531a94590b05" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_564ad952-ab9c-4fed-a4ab-6b3f5f095708" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IncreaseDecreaseInNotesReceivableFromAffiliates_db6fa211-043a-4c51-8e46-ae874438ecf4" xlink:href="ppl-20250630.xsd#ppl_IncreaseDecreaseInNotesReceivableFromAffiliates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_26e3ba29-98e0-45db-9a29-531a94590b05" xlink:to="loc_ppl_IncreaseDecreaseInNotesReceivableFromAffiliates_db6fa211-043a-4c51-8e46-ae874438ecf4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireInvestments_51edb695-cf50-46e3-9ff1-840865d5985b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_26e3ba29-98e0-45db-9a29-531a94590b05" xlink:to="loc_us-gaap_PaymentsToAcquireInvestments_51edb695-cf50-46e3-9ff1-840865d5985b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_99a76cf8-0aaf-4bc0-bd00-0dffb4fbe0ac" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_26e3ba29-98e0-45db-9a29-531a94590b05" xlink:to="loc_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_99a76cf8-0aaf-4bc0-bd00-0dffb4fbe0ac" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireIntangibleAssets_81fed2f9-d1d3-4d7d-8937-3fcb541ec615" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_26e3ba29-98e0-45db-9a29-531a94590b05" xlink:to="loc_us-gaap_PaymentsToAcquireIntangibleAssets_81fed2f9-d1d3-4d7d-8937-3fcb541ec615" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties_e035b46a-77c3-43e6-967f-6a5287c0004a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_26e3ba29-98e0-45db-9a29-531a94590b05" xlink:to="loc_us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties_e035b46a-77c3-43e6-967f-6a5287c0004a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested_1594c6fb-dfd4-412c-905b-f6a6252056b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_26e3ba29-98e0-45db-9a29-531a94590b05" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested_1594c6fb-dfd4-412c-905b-f6a6252056b7" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_701a4d7f-3728-4877-a1f9-c20c5065e567" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_26e3ba29-98e0-45db-9a29-531a94590b05" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_701a4d7f-3728-4877-a1f9-c20c5065e567" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_bc220e6c-2199-4cce-b5d0-0806ef9ef6b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_26e3ba29-98e0-45db-9a29-531a94590b05" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_bc220e6c-2199-4cce-b5d0-0806ef9ef6b3" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_493f5d1a-b645-472b-bf89-72028e169348" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_26e3ba29-98e0-45db-9a29-531a94590b05" xlink:to="loc_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_493f5d1a-b645-472b-bf89-72028e169348" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_5a47c629-81d5-4156-ad0c-13212f2e44f7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_26e3ba29-98e0-45db-9a29-531a94590b05" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_5a47c629-81d5-4156-ad0c-13212f2e44f7" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73a94701-166d-41fd-9df9-3d5ab3ec86d8" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_d580888b-a52c-4b1d-a639-cab9576ca2ba" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_d580888b-a52c-4b1d-a639-cab9576ca2ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_5a3d219e-2f6b-480d-b938-468e34b97899" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_5a3d219e-2f6b-480d-b938-468e34b97899" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ProceedsFromProjectFinancing_80e3c60a-17de-46e8-9f67-127efbb43ade" xlink:href="ppl-20250630.xsd#ppl_ProceedsFromProjectFinancing"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_ppl_ProceedsFromProjectFinancing_80e3c60a-17de-46e8-9f67-127efbb43ade" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IncreaseDecreaseInNotesPayableToAffiliates_8d4a7484-0e17-4d4e-82f7-16c6a9d70116" xlink:href="ppl-20250630.xsd#ppl_IncreaseDecreaseInNotesPayableToAffiliates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_ppl_IncreaseDecreaseInNotesPayableToAffiliates_8d4a7484-0e17-4d4e-82f7-16c6a9d70116" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDistributionsToAffiliates_9bbedb19-f9b8-4b12-9aa7-f53e405221c4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfDistributionsToAffiliates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_PaymentsOfDistributionsToAffiliates_9bbedb19-f9b8-4b12-9aa7-f53e405221c4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromContributionsFromAffiliates_6f5167c6-075f-4000-890b-068faaf8ab92" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromContributionsFromAffiliates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_ProceedsFromContributionsFromAffiliates_6f5167c6-075f-4000-890b-068faaf8ab92" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_66ee3eda-9d5d-4555-8c59-ae2b2c6d470b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_66ee3eda-9d5d-4555-8c59-ae2b2c6d470b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_2a50c0e8-fbc9-4b90-9ff5-03ea1842c5d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_2a50c0e8-fbc9-4b90-9ff5-03ea1842c5d5" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_9f617e6f-a7a6-4efb-ba1a-bb8ef434eb8b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_9f617e6f-a7a6-4efb-ba1a-bb8ef434eb8b" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ProceedsFromIssuanceOfTermLoansShortTermDebtMaturingInMoreThanThreeMonths_888fff5a-94dc-43fa-b4b1-053ecab93af1" xlink:href="ppl-20250630.xsd#ppl_ProceedsFromIssuanceOfTermLoansShortTermDebtMaturingInMoreThanThreeMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_ppl_ProceedsFromIssuanceOfTermLoansShortTermDebtMaturingInMoreThanThreeMonths_888fff5a-94dc-43fa-b4b1-053ecab93af1" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RepaymentsOfTermLoanShortTermDebtMaturingInMoreThanThreeMonths_28ea77ad-a9d4-4535-911d-295764949bd1" xlink:href="ppl-20250630.xsd#ppl_RepaymentsOfTermLoanShortTermDebtMaturingInMoreThanThreeMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_ppl_RepaymentsOfTermLoanShortTermDebtMaturingInMoreThanThreeMonths_28ea77ad-a9d4-4535-911d-295764949bd1" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromShortTermDebtMaturingInMoreThanThreeMonths_75f5bff9-623e-436d-8c80-b7042feb01d8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromShortTermDebtMaturingInMoreThanThreeMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_ProceedsFromShortTermDebtMaturingInMoreThanThreeMonths_75f5bff9-623e-436d-8c80-b7042feb01d8" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RepaymentsOfCommercialPaperShortTermDebtMaturingInMoreThanThreeMonths_887cdd82-36ec-4e4d-8dbd-78ddc8896e19" xlink:href="ppl-20250630.xsd#ppl_RepaymentsOfCommercialPaperShortTermDebtMaturingInMoreThanThreeMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_ppl_RepaymentsOfCommercialPaperShortTermDebtMaturingInMoreThanThreeMonths_887cdd82-36ec-4e4d-8dbd-78ddc8896e19" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashDividendsPaidToParentCompany_a345a505-ea7f-425c-884f-1b0a0fa56a2e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashDividendsPaidToParentCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_CashDividendsPaidToParentCompany_a345a505-ea7f-425c-884f-1b0a0fa56a2e" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_19d17561-7c63-44c2-bf2c-831d4d0e5f63" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_19d17561-7c63-44c2-bf2c-831d4d0e5f63" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess_3a2f0064-ad6f-451a-a17f-5a2abc5af377" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess_3a2f0064-ad6f-451a-a17f-5a2abc5af377" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromContributionsFromParent_2fa3d47e-0f00-48a0-a0e7-e0daf8db97c4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromContributionsFromParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_ProceedsFromContributionsFromParent_2fa3d47e-0f00-48a0-a0e7-e0daf8db97c4" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RepaymentOfCapitalToParent_486b2926-191d-41cb-9b35-688c108e3057" xlink:href="ppl-20250630.xsd#ppl_RepaymentOfCapitalToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_ppl_RepaymentOfCapitalToParent_486b2926-191d-41cb-9b35-688c108e3057" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_30fb955c-ad3b-4f54-bf94-5ad22c1c6827" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_30fb955c-ad3b-4f54-bf94-5ad22c1c6827" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_dbb9483f-e7f4-4a8b-b075-bfa98d6bbda9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_dbb9483f-e7f4-4a8b-b075-bfa98d6bbda9" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations_fd2fd688-c106-4225-8b82-ac65286968b6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations_fd2fd688-c106-4225-8b82-ac65286968b6" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ProceedsFromContributionsFromDiscontinuedOperations_c9b887e0-49e7-4384-9919-2983fdb60a90" xlink:href="ppl-20250630.xsd#ppl_ProceedsFromContributionsFromDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_ppl_ProceedsFromContributionsFromDiscontinuedOperations_c9b887e0-49e7-4384-9919-2983fdb60a90" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_802aca4f-23e8-41a6-8456-52c427bbab76" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_802aca4f-23e8-41a6-8456-52c427bbab76" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_9e8ada88-4229-4df6-bc74-8c3e5bf12b79" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_d6631c37-76cc-4b82-b623-4fc7c5609a75" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_9e8ada88-4229-4df6-bc74-8c3e5bf12b79" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_9145d46f-64cf-4ac4-84a5-c5f0d3bbc9b0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73a94701-166d-41fd-9df9-3d5ab3ec86d8" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_9145d46f-64cf-4ac4-84a5-c5f0d3bbc9b0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseDiscontinuedOperations_c79bfbb4-5d20-4c18-b3ef-81eba3ab80f0" xlink:href="ppl-20250630.xsd#ppl_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73a94701-166d-41fd-9df9-3d5ab3ec86d8" xlink:to="loc_ppl_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseDiscontinuedOperations_c79bfbb4-5d20-4c18-b3ef-81eba3ab80f0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_235e6c73-51f9-4989-b19b-edd65238f203" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73a94701-166d-41fd-9df9-3d5ab3ec86d8" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_235e6c73-51f9-4989-b19b-edd65238f203" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_74407904-5bbf-46b6-bfd9-b6d19e49a466" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73a94701-166d-41fd-9df9-3d5ab3ec86d8" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_74407904-5bbf-46b6-bfd9-b6d19e49a466" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_553c33e8-584c-4cc5-b5a0-86ef2db8688c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73a94701-166d-41fd-9df9-3d5ab3ec86d8" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_553c33e8-584c-4cc5-b5a0-86ef2db8688c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a5b164-77e0-45e0-8abd-a18f3fff389c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_f4addaf5-ade5-4fa6-b2b2-c22616a8007e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_81d0ebcf-27e7-4593-86ee-4c44b51ff629" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SupplementalCashFlowInformationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73a94701-166d-41fd-9df9-3d5ab3ec86d8" xlink:to="loc_us-gaap_SupplementalCashFlowInformationAbstract_81d0ebcf-27e7-4593-86ee-4c44b51ff629" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_aae47d69-4178-44be-9d5c-e8fe0e17fd05" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CapitalExpendituresIncurredButNotYetPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_81d0ebcf-27e7-4593-86ee-4c44b51ff629" xlink:to="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_aae47d69-4178-44be-9d5c-e8fe0e17fd05" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IntangibleAssetExpendituresIncurredButNotYetPaid_52621588-47bd-450f-9b25-a04ba4b89f3c" xlink:href="ppl-20250630.xsd#ppl_IntangibleAssetExpendituresIncurredButNotYetPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_81d0ebcf-27e7-4593-86ee-4c44b51ff629" xlink:to="loc_ppl_IntangibleAssetExpendituresIncurredButNotYetPaid_52621588-47bd-450f-9b25-a04ba4b89f3c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPaidNet_4116a12a-a2df-4cff-8b05-608893816e22" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestPaidNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73a94701-166d-41fd-9df9-3d5ab3ec86d8" xlink:to="loc_us-gaap_InterestPaidNet_4116a12a-a2df-4cff-8b05-608893816e22" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesPaidNet_801eb6ec-9d5f-4acf-ae6d-7e2d8266a5c1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxesPaidNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73a94701-166d-41fd-9df9-3d5ab3ec86d8" xlink:to="loc_us-gaap_IncomeTaxesPaidNet_801eb6ec-9d5f-4acf-ae6d-7e2d8266a5c1" xlink:type="arc" order="12"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUnaudited" xlink:type="simple" xlink:href="ppl-20250630.xsd#CONDENSEDCONSOLIDATEDBALANCESHEETSUnaudited"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_5e61532e-6199-4df4-b024-66fb8784f08e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_907ce394-c59e-4078-a556-bd8b8b68faa2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_5e61532e-6199-4df4-b024-66fb8784f08e" xlink:to="loc_us-gaap_StatementTable_907ce394-c59e-4078-a556-bd8b8b68faa2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_24791c5f-99f3-4629-b963-40a397f39f39" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_907ce394-c59e-4078-a556-bd8b8b68faa2" xlink:to="loc_dei_LegalEntityAxis_24791c5f-99f3-4629-b963-40a397f39f39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_24791c5f-99f3-4629-b963-40a397f39f39_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_24791c5f-99f3-4629-b963-40a397f39f39" xlink:to="loc_dei_EntityDomain_24791c5f-99f3-4629-b963-40a397f39f39_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_eb675db1-0fe3-4a8d-9222-82a580726d0b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_24791c5f-99f3-4629-b963-40a397f39f39" xlink:to="loc_dei_EntityDomain_eb675db1-0fe3-4a8d-9222-82a580726d0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_bd750015-daae-4ee9-b66c-8650e7191dd7" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_eb675db1-0fe3-4a8d-9222-82a580726d0b" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_bd750015-daae-4ee9-b66c-8650e7191dd7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_bb9c372c-1070-4e1d-ba54-f75662878d46" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_eb675db1-0fe3-4a8d-9222-82a580726d0b" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_bb9c372c-1070-4e1d-ba54-f75662878d46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_430bbe0d-f94d-42f8-a521-2c0067746939" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_eb675db1-0fe3-4a8d-9222-82a580726d0b" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_430bbe0d-f94d-42f8-a521-2c0067746939" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_aa054db5-50ac-4fc7-9b36-be47618160e9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_907ce394-c59e-4078-a556-bd8b8b68faa2" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_aa054db5-50ac-4fc7-9b36-be47618160e9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_aa054db5-50ac-4fc7-9b36-be47618160e9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_aa054db5-50ac-4fc7-9b36-be47618160e9" xlink:to="loc_us-gaap_RelatedPartyDomain_aa054db5-50ac-4fc7-9b36-be47618160e9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_ceb6f89f-60e5-435d-bb3f-070c61a912a9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_aa054db5-50ac-4fc7-9b36-be47618160e9" xlink:to="loc_us-gaap_RelatedPartyDomain_ceb6f89f-60e5-435d-bb3f-070c61a912a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_200488cc-7386-4b0a-b056-2a5cafefd682" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_ceb6f89f-60e5-435d-bb3f-070c61a912a9" xlink:to="loc_us-gaap_RelatedPartyMember_200488cc-7386-4b0a-b056-2a5cafefd682" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonrelatedPartyMember_15f58019-d845-4830-9136-b6ef8f9102f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonrelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_ceb6f89f-60e5-435d-bb3f-070c61a912a9" xlink:to="loc_us-gaap_NonrelatedPartyMember_15f58019-d845-4830-9136-b6ef8f9102f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_d70eab05-ced1-4c45-a091-15bb4320376f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5e61532e-6199-4df4-b024-66fb8784f08e" xlink:to="loc_us-gaap_AssetsAbstract_d70eab05-ced1-4c45-a091-15bb4320376f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_f0a0ceae-2b84-4f15-9251-fc68df9d3382" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_d70eab05-ced1-4c45-a091-15bb4320376f" xlink:to="loc_us-gaap_AssetsCurrentAbstract_f0a0ceae-2b84-4f15-9251-fc68df9d3382" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_a679fde6-5e31-4f57-afcc-d0965015b1d7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_f0a0ceae-2b84-4f15-9251-fc68df9d3382" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_a679fde6-5e31-4f57-afcc-d0965015b1d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesNetCurrentAbstract_f3c18b42-fe08-4173-9f06-b7526b5f040e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivablesNetCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_f0a0ceae-2b84-4f15-9251-fc68df9d3382" xlink:to="loc_us-gaap_ReceivablesNetCurrentAbstract_f3c18b42-fe08-4173-9f06-b7526b5f040e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_fe3b6a2f-b8cd-4003-83d7-1ace4750dd9c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivablesNetCurrentAbstract_f3c18b42-fe08-4173-9f06-b7526b5f040e" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_fe3b6a2f-b8cd-4003-83d7-1ace4750dd9c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NontradeReceivablesCurrent_bf868056-1172-4c49-ad0e-d5843ca65ec7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NontradeReceivablesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivablesNetCurrentAbstract_f3c18b42-fe08-4173-9f06-b7526b5f040e" xlink:to="loc_us-gaap_NontradeReceivablesCurrent_bf868056-1172-4c49-ad0e-d5843ca65ec7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnbilledContractsReceivable_fd37840a-368e-4e76-a22c-00bbfe28644b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnbilledContractsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_f0a0ceae-2b84-4f15-9251-fc68df9d3382" xlink:to="loc_us-gaap_UnbilledContractsReceivable_fd37840a-368e-4e76-a22c-00bbfe28644b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_a8c1b6cc-b361-4201-bda1-2a0a3c806c7a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_f0a0ceae-2b84-4f15-9251-fc68df9d3382" xlink:to="loc_us-gaap_NotesReceivableNet_a8c1b6cc-b361-4201-bda1-2a0a3c806c7a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_580fcb16-29a4-427a-b041-b877cab77cea" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_f0a0ceae-2b84-4f15-9251-fc68df9d3382" xlink:to="loc_us-gaap_InventoryNet_580fcb16-29a4-427a-b041-b877cab77cea" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrent_ede5c9b8-baea-4e24-9be6-ddae55800e1b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidExpenseCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_f0a0ceae-2b84-4f15-9251-fc68df9d3382" xlink:to="loc_us-gaap_PrepaidExpenseCurrent_ede5c9b8-baea-4e24-9be6-ddae55800e1b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetsCurrent_3a4c6cd3-b45f-47e1-9086-7814a3fc7b8f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_f0a0ceae-2b84-4f15-9251-fc68df9d3382" xlink:to="loc_us-gaap_RegulatoryAssetsCurrent_3a4c6cd3-b45f-47e1-9086-7814a3fc7b8f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_62f784c3-1f16-4d9a-aa2f-d167065d9f8d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_f0a0ceae-2b84-4f15-9251-fc68df9d3382" xlink:to="loc_us-gaap_OtherAssetsCurrent_62f784c3-1f16-4d9a-aa2f-d167065d9f8d" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_7cf30eac-1106-44b0-8804-acc9813e4c10" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_f0a0ceae-2b84-4f15-9251-fc68df9d3382" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_7cf30eac-1106-44b0-8804-acc9813e4c10" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_b64fc8e5-4e15-44d0-861f-f03bdbc5bcf1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_d70eab05-ced1-4c45-a091-15bb4320376f" xlink:to="loc_us-gaap_AssetsCurrent_b64fc8e5-4e15-44d0-861f-f03bdbc5bcf1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_9dc420d0-05bb-45cb-87f7-eda469a018c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_d70eab05-ced1-4c45-a091-15bb4320376f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_9dc420d0-05bb-45cb-87f7-eda469a018c7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService_dc3260a5-566f-49de-b451-80fe029bde7a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_9dc420d0-05bb-45cb-87f7-eda469a018c7" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService_dc3260a5-566f-49de-b451-80fe029bde7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_0db096c8-bdad-4218-bf02-9b0588c14422" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_9dc420d0-05bb-45cb-87f7-eda469a018c7" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_0db096c8-bdad-4218-bf02-9b0588c14422" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet_f4be4867-6659-4206-888e-f910defb3f1c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_9dc420d0-05bb-45cb-87f7-eda469a018c7" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet_f4be4867-6659-4206-888e-f910defb3f1c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentOther_507025d7-bd07-4f75-82a3-175e86145682" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_9dc420d0-05bb-45cb-87f7-eda469a018c7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentOther_507025d7-bd07-4f75-82a3-175e86145682" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_829554f3-572d-45a9-b9a2-870f3bd69794" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_9dc420d0-05bb-45cb-87f7-eda469a018c7" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_829554f3-572d-45a9-b9a2-870f3bd69794" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PropertyPlantAndEquipmentNetNonregulated_151a18db-7ed0-4915-afb9-8eaae43c8b37" xlink:href="ppl-20250630.xsd#ppl_PropertyPlantAndEquipmentNetNonregulated"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_9dc420d0-05bb-45cb-87f7-eda469a018c7" xlink:to="loc_ppl_PropertyPlantAndEquipmentNetNonregulated_151a18db-7ed0-4915-afb9-8eaae43c8b37" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressGross_42105a0b-8ac9-4050-a34d-46b0f1433d99" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConstructionInProgressGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_9dc420d0-05bb-45cb-87f7-eda469a018c7" xlink:to="loc_us-gaap_ConstructionInProgressGross_42105a0b-8ac9-4050-a34d-46b0f1433d99" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_35dd4b0a-f322-4953-8437-af39d441f254" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_9dc420d0-05bb-45cb-87f7-eda469a018c7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_35dd4b0a-f322-4953-8437-af39d441f254" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsNoncurrentAbstract_2fb9a79e-9ec7-4112-b006-878c6a05734b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsNoncurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_d70eab05-ced1-4c45-a091-15bb4320376f" xlink:to="loc_us-gaap_AssetsNoncurrentAbstract_2fb9a79e-9ec7-4112-b006-878c6a05734b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetsNoncurrent_0b259db4-b93b-4810-b98f-756adc13c151" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_2fb9a79e-9ec7-4112-b006-878c6a05734b" xlink:to="loc_us-gaap_RegulatoryAssetsNoncurrent_0b259db4-b93b-4810-b98f-756adc13c151" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_02422b97-76fe-4df2-bf3a-4a0ff00c03d3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_2fb9a79e-9ec7-4112-b006-878c6a05734b" xlink:to="loc_us-gaap_Goodwill_02422b97-76fe-4df2-bf3a-4a0ff00c03d3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_6315297f-0209-4535-a0d0-c6df771c709a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_2fb9a79e-9ec7-4112-b006-878c6a05734b" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_6315297f-0209-4535-a0d0-c6df771c709a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_6e278828-a51e-497c-9d0c-a0dd7e067209" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_2fb9a79e-9ec7-4112-b006-878c6a05734b" xlink:to="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_6e278828-a51e-497c-9d0c-a0dd7e067209" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_21f7eb2e-0262-456e-a66b-6c11b427f1d3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_2fb9a79e-9ec7-4112-b006-878c6a05734b" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_21f7eb2e-0262-456e-a66b-6c11b427f1d3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsNoncurrent_63af8eb6-8435-4d76-831b-8349dbab049a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_2fb9a79e-9ec7-4112-b006-878c6a05734b" xlink:to="loc_us-gaap_AssetsNoncurrent_63af8eb6-8435-4d76-831b-8349dbab049a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_75dea734-7088-4634-a98b-9b9ee82e9bf4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_d70eab05-ced1-4c45-a091-15bb4320376f" xlink:to="loc_us-gaap_Assets_75dea734-7088-4634-a98b-9b9ee82e9bf4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_11a0ac7c-6054-4f64-a512-ed37aa8fe5c2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5e61532e-6199-4df4-b024-66fb8784f08e" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_11a0ac7c-6054-4f64-a512-ed37aa8fe5c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_11a0ac7c-6054-4f64-a512-ed37aa8fe5c2" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermBorrowings_9fd51a72-6b84-4db0-96e7-aecdc359e44a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_us-gaap_ShortTermBorrowings_9fd51a72-6b84-4db0-96e7-aecdc359e44a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_36d6705b-2488-498d-a155-04142cf98530" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_us-gaap_LongTermDebtCurrent_36d6705b-2488-498d-a155-04142cf98530" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayableRelatedPartyTypeExtensibleEnumeration_38e442f8-a1b8-48f0-8626-936b25857eb4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesPayableRelatedPartyTypeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_us-gaap_NotesPayableRelatedPartyTypeExtensibleEnumeration_38e442f8-a1b8-48f0-8626-936b25857eb4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayable_def122a7-e398-4b8b-b621-3b096ee97d0a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_us-gaap_NotesPayable_def122a7-e398-4b8b-b621-3b096ee97d0a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_d26b3902-c677-415e-992d-2471a2bdc0c1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_us-gaap_AccountsPayableCurrent_d26b3902-c677-415e-992d-2471a2bdc0c1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesPayableCurrent_2876d992-ec99-47e0-ace8-d91093298bee" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TaxesPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_us-gaap_TaxesPayableCurrent_2876d992-ec99-47e0-ace8-d91093298bee" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PriceRiskManagementLiabilitiesCurrent_2fe46ecc-0c4b-47a2-810f-c2845fe8ae91" xlink:href="ppl-20250630.xsd#ppl_PriceRiskManagementLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_ppl_PriceRiskManagementLiabilitiesCurrent_2fe46ecc-0c4b-47a2-810f-c2845fe8ae91" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrent_3288ce92-a276-426d-8098-284ff970ba69" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_us-gaap_InterestPayableCurrent_3288ce92-a276-426d-8098-284ff970ba69" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsPayableCurrent_5100c7a1-d90a-49f4-b06e-063863532252" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DividendsPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_us-gaap_DividendsPayableCurrent_5100c7a1-d90a-49f4-b06e-063863532252" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CurrentCustomerDeposits_5d1ab7a2-29cd-41d4-be2d-ceea6777c7d7" xlink:href="ppl-20250630.xsd#ppl_CurrentCustomerDeposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_ppl_CurrentCustomerDeposits_5d1ab7a2-29cd-41d4-be2d-ceea6777c7d7" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityCurrent_55ffec04-21a5-4b01-a31d-ea24f06b3dfa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_us-gaap_RegulatoryLiabilityCurrent_55ffec04-21a5-4b01-a31d-ea24f06b3dfa" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CounterpartyCollateral_c3caee80-e04e-4876-800f-1ed58241e21f" xlink:href="ppl-20250630.xsd#ppl_CounterpartyCollateral"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_ppl_CounterpartyCollateral_c3caee80-e04e-4876-800f-1ed58241e21f" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationCurrent_5be32c3e-0cb1-4b4c-8774-bee8dd0b9530" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_us-gaap_AssetRetirementObligationCurrent_5be32c3e-0cb1-4b4c-8774-bee8dd0b9530" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_98a70c1e-79ea-46b6-8354-c2c72b9a1712" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_98a70c1e-79ea-46b6-8354-c2c72b9a1712" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_588597f8-bb11-4682-85d6-a5e9eb203636" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_588597f8-bb11-4682-85d6-a5e9eb203636" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_0a32a002-0c32-4cff-8170-3774e3c28d9d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_a0cd34c1-1997-4d24-b8c2-5ae117d36cdf" xlink:to="loc_us-gaap_LiabilitiesCurrent_0a32a002-0c32-4cff-8170-3774e3c28d9d" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAbstract_d9270b7e-9735-4ae4-9459-97d45f71a514" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_11a0ac7c-6054-4f64-a512-ed37aa8fe5c2" xlink:to="loc_us-gaap_LongTermDebtAbstract_d9270b7e-9735-4ae4-9459-97d45f71a514" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermNotesAndLoans_f43941b2-145d-4a60-b170-24f157477adb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermNotesAndLoans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtAbstract_d9270b7e-9735-4ae4-9459-97d45f71a514" xlink:to="loc_us-gaap_LongTermNotesAndLoans_f43941b2-145d-4a60-b170-24f157477adb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_9dede7c9-bc75-4a0b-b434-4c378e4606b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtAbstract_d9270b7e-9735-4ae4-9459-97d45f71a514" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_9dede7c9-bc75-4a0b-b434-4c378e4606b7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrentAbstract_f2dc3f69-7143-4b89-999a-55421bbdd730" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesNoncurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_11a0ac7c-6054-4f64-a512-ed37aa8fe5c2" xlink:to="loc_us-gaap_LiabilitiesNoncurrentAbstract_f2dc3f69-7143-4b89-999a-55421bbdd730" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_a48e2f52-1d71-46f7-9159-fe8cd53db908" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_f2dc3f69-7143-4b89-999a-55421bbdd730" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_a48e2f52-1d71-46f7-9159-fe8cd53db908" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DeferredInvestmentTaxCredit_a3eb609d-0717-4d5d-9a2e-947938da8b01" xlink:href="ppl-20250630.xsd#ppl_DeferredInvestmentTaxCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_f2dc3f69-7143-4b89-999a-55421bbdd730" xlink:to="loc_ppl_DeferredInvestmentTaxCredit_a3eb609d-0717-4d5d-9a2e-947938da8b01" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent_2320ec19-7d2b-4161-a305-6ec2757a3175" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_f2dc3f69-7143-4b89-999a-55421bbdd730" xlink:to="loc_us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent_2320ec19-7d2b-4161-a305-6ec2757a3175" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationsNoncurrent_15e2afb1-470f-412c-8ebc-0e6d46d96ec8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_f2dc3f69-7143-4b89-999a-55421bbdd730" xlink:to="loc_us-gaap_AssetRetirementObligationsNoncurrent_15e2afb1-470f-412c-8ebc-0e6d46d96ec8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityNoncurrent_18462d2d-e0be-47df-bb35-5709ccce0842" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_f2dc3f69-7143-4b89-999a-55421bbdd730" xlink:to="loc_us-gaap_RegulatoryLiabilityNoncurrent_18462d2d-e0be-47df-bb35-5709ccce0842" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PriceRiskManagementLiabilities_d68cf429-6e1c-401c-9bca-b3b146632021" xlink:href="ppl-20250630.xsd#ppl_PriceRiskManagementLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_f2dc3f69-7143-4b89-999a-55421bbdd730" xlink:to="loc_ppl_PriceRiskManagementLiabilities_d68cf429-6e1c-401c-9bca-b3b146632021" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_36e7ada7-8cfa-4340-930e-7fd8ae738c20" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_f2dc3f69-7143-4b89-999a-55421bbdd730" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_36e7ada7-8cfa-4340-930e-7fd8ae738c20" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_764d6c87-9372-4f5c-9188-dbaf158fc892" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_f2dc3f69-7143-4b89-999a-55421bbdd730" xlink:to="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_764d6c87-9372-4f5c-9188-dbaf158fc892" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_942ede60-382f-4cf5-83fb-538b32831097" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_11a0ac7c-6054-4f64-a512-ed37aa8fe5c2" xlink:to="loc_us-gaap_CommitmentsAndContingencies_942ede60-382f-4cf5-83fb-538b32831097" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_6862edc1-27cd-459f-852e-907f06b88e16" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_11a0ac7c-6054-4f64-a512-ed37aa8fe5c2" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_6862edc1-27cd-459f-852e-907f06b88e16" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_cd80a47e-bda7-4df8-a656-a2277ef74194" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_6862edc1-27cd-459f-852e-907f06b88e16" xlink:to="loc_us-gaap_CommonStockValue_cd80a47e-bda7-4df8-a656-a2277ef74194" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_eb319a47-5cf4-4479-8c82-41e5e8b69a44" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_6862edc1-27cd-459f-852e-907f06b88e16" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_eb319a47-5cf4-4479-8c82-41e5e8b69a44" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonValue_5e644953-bec1-4b71-9b58-b0aba4922794" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockCommonValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_6862edc1-27cd-459f-852e-907f06b88e16" xlink:to="loc_us-gaap_TreasuryStockCommonValue_5e644953-bec1-4b71-9b58-b0aba4922794" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_3e77e3e7-5750-4308-8c91-cb1cc82d7d9f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_6862edc1-27cd-459f-852e-907f06b88e16" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_3e77e3e7-5750-4308-8c91-cb1cc82d7d9f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_a049062b-61f5-48ea-9a0b-eeed14f8f9d7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_6862edc1-27cd-459f-852e-907f06b88e16" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_a049062b-61f5-48ea-9a0b-eeed14f8f9d7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_e453c226-e9e3-4fec-b76a-2d8dc4eed009" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_6862edc1-27cd-459f-852e-907f06b88e16" xlink:to="loc_us-gaap_StockholdersEquity_e453c226-e9e3-4fec-b76a-2d8dc4eed009" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_5ac7cf0d-0917-4b15-a7ca-405ca5a1f596" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MinorityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_6862edc1-27cd-459f-852e-907f06b88e16" xlink:to="loc_us-gaap_MinorityInterest_5ac7cf0d-0917-4b15-a7ca-405ca5a1f596" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_7b0b0c83-d3e8-496c-acaa-9a30528414f6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_6862edc1-27cd-459f-852e-907f06b88e16" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_7b0b0c83-d3e8-496c-acaa-9a30528414f6" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MembersEquity_4cfd99ec-49bf-43ee-9e75-c140d1c05f9e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MembersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_6862edc1-27cd-459f-852e-907f06b88e16" xlink:to="loc_us-gaap_MembersEquity_4cfd99ec-49bf-43ee-9e75-c140d1c05f9e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_8bf1c828-90fc-4f87-96d8-9bdfa3ed87bc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_11a0ac7c-6054-4f64-a512-ed37aa8fe5c2" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_8bf1c828-90fc-4f87-96d8-9bdfa3ed87bc" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAfterAllowanceForCreditLossRelatedPartyTypeExtensibleEnumeration_e32b7fda-70cf-406a-8f53-42f408904209" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableAfterAllowanceForCreditLossRelatedPartyTypeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5e61532e-6199-4df4-b024-66fb8784f08e" xlink:to="loc_us-gaap_FinancingReceivableAfterAllowanceForCreditLossRelatedPartyTypeExtensibleEnumeration_e32b7fda-70cf-406a-8f53-42f408904209" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUnauditedParenthetical" xlink:type="simple" xlink:href="ppl-20250630.xsd#CONDENSEDCONSOLIDATEDBALANCESHEETSUnauditedParenthetical"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUnauditedParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_c257c1c1-e1d8-49f0-b22c-26c60ab196de" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_ae7ad97a-ef45-4412-a775-c418daebf858" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_c257c1c1-e1d8-49f0-b22c-26c60ab196de" xlink:to="loc_us-gaap_StatementTable_ae7ad97a-ef45-4412-a775-c418daebf858" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_d28667f9-5d1d-45da-beff-4bc8f92ba72d" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_ae7ad97a-ef45-4412-a775-c418daebf858" xlink:to="loc_dei_LegalEntityAxis_d28667f9-5d1d-45da-beff-4bc8f92ba72d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_d28667f9-5d1d-45da-beff-4bc8f92ba72d_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_d28667f9-5d1d-45da-beff-4bc8f92ba72d" xlink:to="loc_dei_EntityDomain_d28667f9-5d1d-45da-beff-4bc8f92ba72d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9a886aea-d20f-489a-8403-21a56b4869fb" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_d28667f9-5d1d-45da-beff-4bc8f92ba72d" xlink:to="loc_dei_EntityDomain_9a886aea-d20f-489a-8403-21a56b4869fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_354792e0-6c7c-4da6-b404-0b6bbedbb42f" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9a886aea-d20f-489a-8403-21a56b4869fb" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_354792e0-6c7c-4da6-b404-0b6bbedbb42f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_4381dd68-3a73-4039-b0bf-9775210a21f2" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9a886aea-d20f-489a-8403-21a56b4869fb" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_4381dd68-3a73-4039-b0bf-9775210a21f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_34060149-72ab-45a8-93ff-3fa1197bd959" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9a886aea-d20f-489a-8403-21a56b4869fb" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_34060149-72ab-45a8-93ff-3fa1197bd959" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_1342a1ae-a1b9-4acf-92fe-4f9313408276" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c257c1c1-e1d8-49f0-b22c-26c60ab196de" xlink:to="loc_us-gaap_AssetsAbstract_1342a1ae-a1b9-4acf-92fe-4f9313408276" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_bd3b0636-732e-418d-8b2b-135e2a2694e0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_1342a1ae-a1b9-4acf-92fe-4f9313408276" xlink:to="loc_us-gaap_AssetsCurrentAbstract_bd3b0636-732e-418d-8b2b-135e2a2694e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesNetCurrentAbstract_a464e06d-d18f-44b9-ac22-df1f856ed5b8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivablesNetCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bd3b0636-732e-418d-8b2b-135e2a2694e0" xlink:to="loc_us-gaap_ReceivablesNetCurrentAbstract_a464e06d-d18f-44b9-ac22-df1f856ed5b8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_54289bef-5592-4fad-b3c8-e87201650ff6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivablesNetCurrentAbstract_a464e06d-d18f-44b9-ac22-df1f856ed5b8" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_54289bef-5592-4fad-b3c8-e87201650ff6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_UnbilledContractsReceivableAllowanceforCreditLossCurrent_4e78af3f-d815-4a21-9988-e7294b1956e2" xlink:href="ppl-20250630.xsd#ppl_UnbilledContractsReceivableAllowanceforCreditLossCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bd3b0636-732e-418d-8b2b-135e2a2694e0" xlink:to="loc_ppl_UnbilledContractsReceivableAllowanceforCreditLossCurrent_4e78af3f-d815-4a21-9988-e7294b1956e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableNoncurrent_4f6ebf72-f83e-4f8a-81b6-634b5a6460ec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bd3b0636-732e-418d-8b2b-135e2a2694e0" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableNoncurrent_4f6ebf72-f83e-4f8a-81b6-634b5a6460ec" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_8ef1d9e5-de90-461e-a513-724c5761d280" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c257c1c1-e1d8-49f0-b22c-26c60ab196de" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_8ef1d9e5-de90-461e-a513-724c5761d280" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_567b9df0-c103-4640-a842-edbc9834dc20" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_8ef1d9e5-de90-461e-a513-724c5761d280" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_567b9df0-c103-4640-a842-edbc9834dc20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_f1267045-a6db-4944-8907-69f8039435e4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_567b9df0-c103-4640-a842-edbc9834dc20" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_f1267045-a6db-4944-8907-69f8039435e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockNoParValue_3bb394ed-2302-43c3-ac3c-dbf13a1af485" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockNoParValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_567b9df0-c103-4640-a842-edbc9834dc20" xlink:to="loc_us-gaap_CommonStockNoParValue_3bb394ed-2302-43c3-ac3c-dbf13a1af485" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_ca6e6cfb-22fd-461e-b41d-ef0023e7d9e1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_567b9df0-c103-4640-a842-edbc9834dc20" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_ca6e6cfb-22fd-461e-b41d-ef0023e7d9e1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_6c082191-8853-43cb-9bb6-df7e7c8d803c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_567b9df0-c103-4640-a842-edbc9834dc20" xlink:to="loc_us-gaap_CommonStockSharesIssued_6c082191-8853-43cb-9bb6-df7e7c8d803c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_bf3b9c18-bcd4-424b-8976-d2db03b700f1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_567b9df0-c103-4640-a842-edbc9834dc20" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_bf3b9c18-bcd4-424b-8976-d2db03b700f1" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITYUnaudited" xlink:type="simple" xlink:href="ppl-20250630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITYUnaudited"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITYUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_7751bc63-9b99-4767-b697-79bb72049780" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_StatementTable_7751bc63-9b99-4767-b697-79bb72049780" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_1d3f6576-dda6-4dd3-9681-dcb6abaa0c4d" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_7751bc63-9b99-4767-b697-79bb72049780" xlink:to="loc_dei_LegalEntityAxis_1d3f6576-dda6-4dd3-9681-dcb6abaa0c4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1d3f6576-dda6-4dd3-9681-dcb6abaa0c4d_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1d3f6576-dda6-4dd3-9681-dcb6abaa0c4d" xlink:to="loc_dei_EntityDomain_1d3f6576-dda6-4dd3-9681-dcb6abaa0c4d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9bbd611c-0fdb-4386-9260-677b5dee0d86" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1d3f6576-dda6-4dd3-9681-dcb6abaa0c4d" xlink:to="loc_dei_EntityDomain_9bbd611c-0fdb-4386-9260-677b5dee0d86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_13cd89ee-6908-4ab8-b8e0-28b3c1299007" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9bbd611c-0fdb-4386-9260-677b5dee0d86" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_13cd89ee-6908-4ab8-b8e0-28b3c1299007" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_d8353b2d-0c05-4a28-b5ce-c5ebc4f6f20a" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9bbd611c-0fdb-4386-9260-677b5dee0d86" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_d8353b2d-0c05-4a28-b5ce-c5ebc4f6f20a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_5f2ee2b0-29ea-48a5-810f-cb2f3d375325" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9bbd611c-0fdb-4386-9260-677b5dee0d86" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_5f2ee2b0-29ea-48a5-810f-cb2f3d375325" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_b0eab052-17ef-4dcf-bc29-487a1b024bde" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_7751bc63-9b99-4767-b697-79bb72049780" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_b0eab052-17ef-4dcf-bc29-487a1b024bde" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_b0eab052-17ef-4dcf-bc29-487a1b024bde_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_b0eab052-17ef-4dcf-bc29-487a1b024bde" xlink:to="loc_us-gaap_EquityComponentDomain_b0eab052-17ef-4dcf-bc29-487a1b024bde_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_d7502493-dc1b-4afc-9601-fd6bc69b4ef6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_b0eab052-17ef-4dcf-bc29-487a1b024bde" xlink:to="loc_us-gaap_EquityComponentDomain_d7502493-dc1b-4afc-9601-fd6bc69b4ef6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_5251e7a4-2f3c-48d3-b22f-dbc7b6e3c566" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_d7502493-dc1b-4afc-9601-fd6bc69b4ef6" xlink:to="loc_us-gaap_CommonStockMember_5251e7a4-2f3c-48d3-b22f-dbc7b6e3c566" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_2d12cfab-8b1f-477e-b671-eb7651766ce9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_d7502493-dc1b-4afc-9601-fd6bc69b4ef6" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_2d12cfab-8b1f-477e-b671-eb7651766ce9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_caf73021-8644-4ca4-9823-79f9300cedea" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_d7502493-dc1b-4afc-9601-fd6bc69b4ef6" xlink:to="loc_us-gaap_RetainedEarningsMember_caf73021-8644-4ca4-9823-79f9300cedea" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_a35e076b-0365-43da-b34e-0d673caed9ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_d7502493-dc1b-4afc-9601-fd6bc69b4ef6" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_a35e076b-0365-43da-b34e-0d673caed9ce" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_c07830d3-f8a6-4a0e-9cc3-c74eebf3de25" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_d7502493-dc1b-4afc-9601-fd6bc69b4ef6" xlink:to="loc_us-gaap_TreasuryStockCommonMember_c07830d3-f8a6-4a0e-9cc3-c74eebf3de25" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_f73a66a4-be10-4994-a931-49efc3ae7c46" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_d7502493-dc1b-4afc-9601-fd6bc69b4ef6" xlink:to="loc_us-gaap_NoncontrollingInterestMember_f73a66a4-be10-4994-a931-49efc3ae7c46" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_a41a6d56-6189-4819-86fc-320a5c4fbefc" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_7751bc63-9b99-4767-b697-79bb72049780" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_a41a6d56-6189-4819-86fc-320a5c4fbefc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_a41a6d56-6189-4819-86fc-320a5c4fbefc_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_a41a6d56-6189-4819-86fc-320a5c4fbefc" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_a41a6d56-6189-4819-86fc-320a5c4fbefc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_5dd0047b-d117-40b4-859d-89c5dbd67517" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_a41a6d56-6189-4819-86fc-320a5c4fbefc" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_5dd0047b-d117-40b4-859d-89c5dbd67517" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_93d1a09e-a9e8-4d2f-b7fb-3007b3f4d62b" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_5dd0047b-d117-40b4-859d-89c5dbd67517" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_93d1a09e-a9e8-4d2f-b7fb-3007b3f4d62b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_9e073a32-56a2-4e56-b004-f34d777bfde4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_9e073a32-56a2-4e56-b004-f34d777bfde4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_fbe29a50-b1a3-4b67-9617-a08d70155e6c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_fbe29a50-b1a3-4b67-9617-a08d70155e6c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_6f53540e-75d5-4d12-b8ab-32a8d28ddb05" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_StockholdersEquity_6f53540e-75d5-4d12-b8ab-32a8d28ddb05" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MembersEquity_06c6e304-ddc0-46af-baf1-6b7488c69699" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MembersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_MembersEquity_06c6e304-ddc0-46af-baf1-6b7488c69699" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_93674e7a-01e1-4dd9-b721-df65e8239185" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_93674e7a-01e1-4dd9-b721-df65e8239185" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_0ce82ab5-3fdd-453b-bea1-6ee95156f724" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_0ce82ab5-3fdd-453b-bea1-6ee95156f724" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued_b77e87e4-7fcf-4c33-956d-2243c0023242" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued_b77e87e4-7fcf-4c33-956d-2243c0023242" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_StockIssuedDuringPeriodValueReissuedTreasuryStock_559346a9-2ded-4b52-8b1c-4dd8cc5d6aa9" xlink:href="ppl-20250630.xsd#ppl_StockIssuedDuringPeriodValueReissuedTreasuryStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_ppl_StockIssuedDuringPeriodValueReissuedTreasuryStock_559346a9-2ded-4b52-8b1c-4dd8cc5d6aa9" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued_33ac32ac-fb44-4617-8a65-98211e941df3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued_33ac32ac-fb44-4617-8a65-98211e941df3" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions_cc878b24-9c28-4190-be7f-8f8593fb8bd1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions_cc878b24-9c28-4190-be7f-8f8593fb8bd1" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_StockBasedCompensation_abf7bfe5-5b46-4a10-bc48-4306c7707170" xlink:href="ppl-20250630.xsd#ppl_StockBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_ppl_StockBasedCompensation_abf7bfe5-5b46-4a10-bc48-4306c7707170" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_c56327be-8188-4ebe-902b-87a96bde0042" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_NetIncomeLoss_c56327be-8188-4ebe-902b-87a96bde0042" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromContributionsFromParent_450a7165-eb98-4db6-97e8-6965a103af5d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromContributionsFromParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_ProceedsFromContributionsFromParent_450a7165-eb98-4db6-97e8-6965a103af5d" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CapitalContributionsFromParent_f3b75b2f-fa69-4c36-9d4a-a55777326b3d" xlink:href="ppl-20250630.xsd#ppl_CapitalContributionsFromParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_ppl_CapitalContributionsFromParent_f3b75b2f-fa69-4c36-9d4a-a55777326b3d" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfCapitalDistribution_e24b0f76-da32-4fba-8152-43798bd97d81" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfCapitalDistribution"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_PaymentsOfCapitalDistribution_e24b0f76-da32-4fba-8152-43798bd97d81" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Dividends_473ce6cd-425a-40a6-ab2e-61af489c90a5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Dividends"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_Dividends_473ce6cd-425a-40a6-ab2e-61af489c90a5" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DividendsCommonStockCashAndNonCash_15e0454a-08df-4aec-976e-f0890006389a" xlink:href="ppl-20250630.xsd#ppl_DividendsCommonStockCashAndNonCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_ppl_DividendsCommonStockCashAndNonCash_15e0454a-08df-4aec-976e-f0890006389a" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_7fbb57f3-2480-4c6a-aae0-bfad341b96ef" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_7fbb57f3-2480-4c6a-aae0-bfad341b96ef" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_4978c765-394d-4531-842d-7f181f41b88e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01097935-8bce-4338-b2d2-3429a584a591" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MembersEquity_2367198d-05ec-4df3-b762-91ddeee91a3e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MembersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromContributionsFromAffiliates_e8bd21cf-5ba3-4f71-8c86-578818e39c97" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromContributionsFromAffiliates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_ProceedsFromContributionsFromAffiliates_e8bd21cf-5ba3-4f71-8c86-578818e39c97" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ContributionsMadeToLimitedLiabilityCompanyLLC_7b69a81e-004d-460a-929f-8ec61eb2769f" xlink:href="ppl-20250630.xsd#ppl_ContributionsMadeToLimitedLiabilityCompanyLLC"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_ppl_ContributionsMadeToLimitedLiabilityCompanyLLC_7b69a81e-004d-460a-929f-8ec61eb2769f" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_3cb1848a-afb1-4716-a7ab-7d38e736bf0d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_3cb1848a-afb1-4716-a7ab-7d38e736bf0d" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReturnOfCapitalToParent_7cc44fbb-e231-4b76-ae2c-12072498351e" xlink:href="ppl-20250630.xsd#ppl_ReturnOfCapitalToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_ppl_ReturnOfCapitalToParent_7cc44fbb-e231-4b76-ae2c-12072498351e" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TaxEffectOfNewAccountingPrincipleInPeriodOfAdoption_42104405-200e-4153-a296-d90ac8540636" xlink:href="ppl-20250630.xsd#ppl_TaxEffectOfNewAccountingPrincipleInPeriodOfAdoption"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_ppl_TaxEffectOfNewAccountingPrincipleInPeriodOfAdoption_42104405-200e-4153-a296-d90ac8540636" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromRedemptions_496ed08e-0f7f-4c77-abc9-1eea7f015788" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MinorityInterestDecreaseFromRedemptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cceb2088-afd2-40b3-af2d-922e02bf22b7" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromRedemptions_496ed08e-0f7f-4c77-abc9-1eea7f015788" xlink:type="arc" order="26"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITYUnauditedParenthetical" xlink:type="simple" xlink:href="ppl-20250630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITYUnauditedParenthetical"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITYUnauditedParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_6832b856-3c4d-4d46-bd52-941a692214fb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_f7224c92-4e9c-4b5b-bc29-a6d8eb3c24c8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_6832b856-3c4d-4d46-bd52-941a692214fb" xlink:to="loc_us-gaap_StatementTable_f7224c92-4e9c-4b5b-bc29-a6d8eb3c24c8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_ebf5185f-2e14-4e85-9e82-3241e1088804" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_f7224c92-4e9c-4b5b-bc29-a6d8eb3c24c8" xlink:to="loc_dei_LegalEntityAxis_ebf5185f-2e14-4e85-9e82-3241e1088804" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ebf5185f-2e14-4e85-9e82-3241e1088804_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_ebf5185f-2e14-4e85-9e82-3241e1088804" xlink:to="loc_dei_EntityDomain_ebf5185f-2e14-4e85-9e82-3241e1088804_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_d80b0c12-c642-4d57-ae8f-18dd32ace53c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_ebf5185f-2e14-4e85-9e82-3241e1088804" xlink:to="loc_dei_EntityDomain_d80b0c12-c642-4d57-ae8f-18dd32ace53c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_c73b0978-1f9b-4336-812e-992ffde1ee7e" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_d80b0c12-c642-4d57-ae8f-18dd32ace53c" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_c73b0978-1f9b-4336-812e-992ffde1ee7e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_327710d5-ad38-4c5c-b9d8-69cf12b0bfd6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_f7224c92-4e9c-4b5b-bc29-a6d8eb3c24c8" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_327710d5-ad38-4c5c-b9d8-69cf12b0bfd6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_327710d5-ad38-4c5c-b9d8-69cf12b0bfd6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_327710d5-ad38-4c5c-b9d8-69cf12b0bfd6" xlink:to="loc_us-gaap_EquityComponentDomain_327710d5-ad38-4c5c-b9d8-69cf12b0bfd6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_1aad0f31-6dfd-4154-a33c-a2fdb178fbf5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_327710d5-ad38-4c5c-b9d8-69cf12b0bfd6" xlink:to="loc_us-gaap_EquityComponentDomain_1aad0f31-6dfd-4154-a33c-a2fdb178fbf5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_c06c4d04-c051-49ac-9657-5a020d03624f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_1aad0f31-6dfd-4154-a33c-a2fdb178fbf5" xlink:to="loc_us-gaap_RetainedEarningsMember_c06c4d04-c051-49ac-9657-5a020d03624f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_VotesPerShareOfCommonStock_1bf80f0e-2c81-44fb-ba97-e69df205bf77" xlink:href="ppl-20250630.xsd#ppl_VotesPerShareOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6832b856-3c4d-4d46-bd52-941a692214fb" xlink:to="loc_ppl_VotesPerShareOfCommonStock_1bf80f0e-2c81-44fb-ba97-e69df205bf77" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TaxEffectOfNewAccountingPrincipleInPeriodOfAdoption_6480f953-7375-4011-bb5b-ca7e9c7fa1c4" xlink:href="ppl-20250630.xsd#ppl_TaxEffectOfNewAccountingPrincipleInPeriodOfAdoption"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6832b856-3c4d-4d46-bd52-941a692214fb" xlink:to="loc_ppl_TaxEffectOfNewAccountingPrincipleInPeriodOfAdoption_6480f953-7375-4011-bb5b-ca7e9c7fa1c4" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/RelatedPartyTransactions" xlink:type="simple" xlink:href="ppl-20250630.xsd#RelatedPartyTransactions"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/RelatedPartyTransactions" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_34a7317f-b7fd-4372-a93b-4493c424dadb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisclosureTable_51659d4f-3e83-4121-89ec-f83c25da1864" xlink:href="ppl-20250630.xsd#ppl_DisclosureTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_34a7317f-b7fd-4372-a93b-4493c424dadb" xlink:to="loc_ppl_DisclosureTable_51659d4f-3e83-4121-89ec-f83c25da1864" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_32b68d19-42ec-4a29-95f7-7f11549d9f3c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_DisclosureTable_51659d4f-3e83-4121-89ec-f83c25da1864" xlink:to="loc_dei_LegalEntityAxis_32b68d19-42ec-4a29-95f7-7f11549d9f3c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_32b68d19-42ec-4a29-95f7-7f11549d9f3c_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_32b68d19-42ec-4a29-95f7-7f11549d9f3c" xlink:to="loc_dei_EntityDomain_32b68d19-42ec-4a29-95f7-7f11549d9f3c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_670957f2-95de-42b2-b614-edc2e236dfe1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_32b68d19-42ec-4a29-95f7-7f11549d9f3c" xlink:to="loc_dei_EntityDomain_670957f2-95de-42b2-b614-edc2e236dfe1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_287db81f-1e61-41c9-842b-5936b599a425" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_670957f2-95de-42b2-b614-edc2e236dfe1" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_287db81f-1e61-41c9-842b-5936b599a425" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_4be5945c-6d57-4ee1-abe6-b6a2ea67e325" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_670957f2-95de-42b2-b614-edc2e236dfe1" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_4be5945c-6d57-4ee1-abe6-b6a2ea67e325" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_e6c5d29f-462e-4099-b446-edde949cd824" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_670957f2-95de-42b2-b614-edc2e236dfe1" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_e6c5d29f-462e-4099-b446-edde949cd824" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_f2d0223d-8e5e-4319-985d-e9d80e06d32c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsDisclosureTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_34a7317f-b7fd-4372-a93b-4493c424dadb" xlink:to="loc_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_f2d0223d-8e5e-4319-985d-e9d80e06d32c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/AssetRetirementObligations" xlink:type="simple" xlink:href="ppl-20250630.xsd#AssetRetirementObligations"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/AssetRetirementObligations" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AssetRetirementObligationsLineItems_823eacde-16ba-407f-adef-4eb6aea58278" xlink:href="ppl-20250630.xsd#ppl_AssetRetirementObligationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisclosureTable_ed7bf650-32cf-4ad0-b5d0-efee93179055" xlink:href="ppl-20250630.xsd#ppl_DisclosureTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_AssetRetirementObligationsLineItems_823eacde-16ba-407f-adef-4eb6aea58278" xlink:to="loc_ppl_DisclosureTable_ed7bf650-32cf-4ad0-b5d0-efee93179055" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_a362386a-da31-44a8-8ef1-0b9f609778f6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_DisclosureTable_ed7bf650-32cf-4ad0-b5d0-efee93179055" xlink:to="loc_dei_LegalEntityAxis_a362386a-da31-44a8-8ef1-0b9f609778f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a362386a-da31-44a8-8ef1-0b9f609778f6_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_a362386a-da31-44a8-8ef1-0b9f609778f6" xlink:to="loc_dei_EntityDomain_a362386a-da31-44a8-8ef1-0b9f609778f6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_086a90a3-c52c-422c-a8cf-17511617102b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_a362386a-da31-44a8-8ef1-0b9f609778f6" xlink:to="loc_dei_EntityDomain_086a90a3-c52c-422c-a8cf-17511617102b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_b1b6c9d1-f5a7-42ab-8d32-4fa1f2afb832" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_086a90a3-c52c-422c-a8cf-17511617102b" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_b1b6c9d1-f5a7-42ab-8d32-4fa1f2afb832" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_fbe3174b-244f-4805-b2d9-9447c0f9985e" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_086a90a3-c52c-422c-a8cf-17511617102b" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_fbe3174b-244f-4805-b2d9-9447c0f9985e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationDisclosureTextBlock_1dae4062-2f31-4239-80d9-2783e767ec47" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationDisclosureTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AssetRetirementObligationsLineItems_823eacde-16ba-407f-adef-4eb6aea58278" xlink:to="loc_us-gaap_AssetRetirementObligationDisclosureTextBlock_1dae4062-2f31-4239-80d9-2783e767ec47" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/AccumulatedOtherComprehensiveIncomeLoss" xlink:type="simple" xlink:href="ppl-20250630.xsd#AccumulatedOtherComprehensiveIncomeLoss"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/AccumulatedOtherComprehensiveIncomeLoss" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_7120c66f-452b-45df-8477-7453e80a5783" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_481986c6-8693-4338-81dd-37b86b199517" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_7120c66f-452b-45df-8477-7453e80a5783" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_481986c6-8693-4338-81dd-37b86b199517" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccumulatedOtherComprehensiveIncomeTextBlock_471edc99-d9ff-4425-b7aa-6cbdd6213ac6" xlink:href="ppl-20250630.xsd#ppl_AccumulatedOtherComprehensiveIncomeTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_7120c66f-452b-45df-8477-7453e80a5783" xlink:to="loc_ppl_AccumulatedOtherComprehensiveIncomeTextBlock_471edc99-d9ff-4425-b7aa-6cbdd6213ac6" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/Leases" xlink:type="simple" xlink:href="ppl-20250630.xsd#Leases"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/Leases" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_44708ea8-cb3f-417d-a65e-d28221188fed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_3f50fd1d-c1cb-4075-8804-92aadf945c81" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_44708ea8-cb3f-417d-a65e-d28221188fed" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_3f50fd1d-c1cb-4075-8804-92aadf945c81" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f9e6df90-272a-42ab-bdd1-c1727b54c37f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_3f50fd1d-c1cb-4075-8804-92aadf945c81" xlink:to="loc_dei_LegalEntityAxis_f9e6df90-272a-42ab-bdd1-c1727b54c37f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f9e6df90-272a-42ab-bdd1-c1727b54c37f_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f9e6df90-272a-42ab-bdd1-c1727b54c37f" xlink:to="loc_dei_EntityDomain_f9e6df90-272a-42ab-bdd1-c1727b54c37f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8d96f573-672a-4951-b415-55244226f6ea" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f9e6df90-272a-42ab-bdd1-c1727b54c37f" xlink:to="loc_dei_EntityDomain_8d96f573-672a-4951-b415-55244226f6ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_d25b3c22-d7ba-430c-98df-09ea617e0bf8" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8d96f573-672a-4951-b415-55244226f6ea" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_d25b3c22-d7ba-430c-98df-09ea617e0bf8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_dd2c0cd9-732e-4c66-b172-df1b983b6341" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8d96f573-672a-4951-b415-55244226f6ea" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_dd2c0cd9-732e-4c66-b172-df1b983b6341" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/OtherIncomeExpensenet" xlink:type="simple" xlink:href="ppl-20250630.xsd#OtherIncomeExpensenet"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/OtherIncomeExpensenet" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherIncomeExpenseNetLineItems_290eeb4f-4dde-46e3-a2bb-424db060475a" xlink:href="ppl-20250630.xsd#ppl_OtherIncomeExpenseNetLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisclosureTable_925aece8-d041-4c05-b901-b0f31e14fe99" xlink:href="ppl-20250630.xsd#ppl_DisclosureTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_OtherIncomeExpenseNetLineItems_290eeb4f-4dde-46e3-a2bb-424db060475a" xlink:to="loc_ppl_DisclosureTable_925aece8-d041-4c05-b901-b0f31e14fe99" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8b9d5b5b-866d-4946-a9d9-d59c5c77cf8f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_DisclosureTable_925aece8-d041-4c05-b901-b0f31e14fe99" xlink:to="loc_dei_LegalEntityAxis_8b9d5b5b-866d-4946-a9d9-d59c5c77cf8f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8b9d5b5b-866d-4946-a9d9-d59c5c77cf8f_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8b9d5b5b-866d-4946-a9d9-d59c5c77cf8f" xlink:to="loc_dei_EntityDomain_8b9d5b5b-866d-4946-a9d9-d59c5c77cf8f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_00992196-f220-46d3-91d3-dd05215d1a79" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8b9d5b5b-866d-4946-a9d9-d59c5c77cf8f" xlink:to="loc_dei_EntityDomain_00992196-f220-46d3-91d3-dd05215d1a79" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_f951bc40-bf65-4468-968c-5f4cf051533b" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_00992196-f220-46d3-91d3-dd05215d1a79" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_f951bc40-bf65-4468-968c-5f4cf051533b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherIncomeOtherExpenseDisclosureNonoperatingTextBlock_283a3846-4335-44b1-bc2b-118d05bc820e" xlink:href="ppl-20250630.xsd#ppl_OtherIncomeOtherExpenseDisclosureNonoperatingTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherIncomeExpenseNetLineItems_290eeb4f-4dde-46e3-a2bb-424db060475a" xlink:to="loc_ppl_OtherIncomeOtherExpenseDisclosureNonoperatingTextBlock_283a3846-4335-44b1-bc2b-118d05bc820e" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/SummaryofSignificantAccountingPoliciesPolicies" xlink:type="simple" xlink:href="ppl-20250630.xsd#SummaryofSignificantAccountingPoliciesPolicies"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/SummaryofSignificantAccountingPoliciesPolicies" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_da2f04d5-1f75-41e4-8dd2-ba4f808d91c3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_445e9413-0cc7-4a8e-8f22-c4df1b8959c4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_da2f04d5-1f75-41e4-8dd2-ba4f808d91c3" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_445e9413-0cc7-4a8e-8f22-c4df1b8959c4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_e3c35e1a-15cc-4e0e-9a69-8a52363f0177" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_445e9413-0cc7-4a8e-8f22-c4df1b8959c4" xlink:to="loc_dei_LegalEntityAxis_e3c35e1a-15cc-4e0e-9a69-8a52363f0177" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e3c35e1a-15cc-4e0e-9a69-8a52363f0177_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_e3c35e1a-15cc-4e0e-9a69-8a52363f0177" xlink:to="loc_dei_EntityDomain_e3c35e1a-15cc-4e0e-9a69-8a52363f0177_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_274f484c-63e2-441a-9277-7242e7899b57" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_e3c35e1a-15cc-4e0e-9a69-8a52363f0177" xlink:to="loc_dei_EntityDomain_274f484c-63e2-441a-9277-7242e7899b57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_9f71699d-06b1-4e2e-8edb-9fc82393f093" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_274f484c-63e2-441a-9277-7242e7899b57" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_9f71699d-06b1-4e2e-8edb-9fc82393f093" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/AdoptionofAccountingGuidanceTables" xlink:type="simple" xlink:href="ppl-20250630.xsd#AdoptionofAccountingGuidanceTables"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/AdoptionofAccountingGuidanceTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SummaryOfSignificantAccountingPoliciesLineItems_9231e833-7b89-419a-8fe8-c6b9359f4f01" xlink:href="ppl-20250630.xsd#ppl_SummaryOfSignificantAccountingPoliciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SummaryOfSignificantAccountingPoliciesTable_7bcabdc1-dff2-4596-abad-8b32af9198bc" xlink:href="ppl-20250630.xsd#ppl_SummaryOfSignificantAccountingPoliciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_SummaryOfSignificantAccountingPoliciesLineItems_9231e833-7b89-419a-8fe8-c6b9359f4f01" xlink:to="loc_ppl_SummaryOfSignificantAccountingPoliciesTable_7bcabdc1-dff2-4596-abad-8b32af9198bc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_64b0aa0b-7ae1-42b7-b633-ca10bf25ef5e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_SummaryOfSignificantAccountingPoliciesTable_7bcabdc1-dff2-4596-abad-8b32af9198bc" xlink:to="loc_dei_LegalEntityAxis_64b0aa0b-7ae1-42b7-b633-ca10bf25ef5e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_64b0aa0b-7ae1-42b7-b633-ca10bf25ef5e_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_64b0aa0b-7ae1-42b7-b633-ca10bf25ef5e" xlink:to="loc_dei_EntityDomain_64b0aa0b-7ae1-42b7-b633-ca10bf25ef5e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7f771032-a72e-412b-a1ea-0bc6897e95db" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_64b0aa0b-7ae1-42b7-b633-ca10bf25ef5e" xlink:to="loc_dei_EntityDomain_7f771032-a72e-412b-a1ea-0bc6897e95db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_e724502b-d75d-49be-b92b-4738979a723b" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_7f771032-a72e-412b-a1ea-0bc6897e95db" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_e724502b-d75d-49be-b92b-4738979a723b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_f8b1888c-9abe-4dfb-b2cc-3b1baea5c4dd" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_7f771032-a72e-412b-a1ea-0bc6897e95db" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_f8b1888c-9abe-4dfb-b2cc-3b1baea5c4dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_f4e91d08-15ec-432c-bec0-c14bf821e9c9" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_7f771032-a72e-412b-a1ea-0bc6897e95db" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_f4e91d08-15ec-432c-bec0-c14bf821e9c9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock_30acfcb2-775d-463e-9156-07f3a52490b4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_SummaryOfSignificantAccountingPoliciesLineItems_9231e833-7b89-419a-8fe8-c6b9359f4f01" xlink:to="loc_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock_30acfcb2-775d-463e-9156-07f3a52490b4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReconciliationofCashCashEquivalentsandRestrictedCashfromtheBalanceSheettoCashFlowTableTextBlock_a365fd92-d6f8-4a40-9fb9-50f5b5e7cb1e" xlink:href="ppl-20250630.xsd#ppl_ReconciliationofCashCashEquivalentsandRestrictedCashfromtheBalanceSheettoCashFlowTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_SummaryOfSignificantAccountingPoliciesLineItems_9231e833-7b89-419a-8fe8-c6b9359f4f01" xlink:to="loc_ppl_ReconciliationofCashCashEquivalentsandRestrictedCashfromtheBalanceSheettoCashFlowTableTextBlock_a365fd92-d6f8-4a40-9fb9-50f5b5e7cb1e" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/RevenuefromContractswithCustomersTables" xlink:type="simple" xlink:href="ppl-20250630.xsd#RevenuefromContractswithCustomersTables"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/RevenuefromContractswithCustomersTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RevenuefromcontractswithcustomersLineItems_45784271-c4a5-46c0-b901-4c8964bd21d7" xlink:href="ppl-20250630.xsd#ppl_RevenuefromcontractswithcustomersLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RevenuefromcontractswithcustomersTable_491476bf-f4c7-4d53-85ea-955f8ee9ca3e" xlink:href="ppl-20250630.xsd#ppl_RevenuefromcontractswithcustomersTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_RevenuefromcontractswithcustomersLineItems_45784271-c4a5-46c0-b901-4c8964bd21d7" xlink:to="loc_ppl_RevenuefromcontractswithcustomersTable_491476bf-f4c7-4d53-85ea-955f8ee9ca3e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_e55766cb-8101-4c03-8620-925c697c557c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RevenuefromcontractswithcustomersTable_491476bf-f4c7-4d53-85ea-955f8ee9ca3e" xlink:to="loc_dei_LegalEntityAxis_e55766cb-8101-4c03-8620-925c697c557c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e55766cb-8101-4c03-8620-925c697c557c_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_e55766cb-8101-4c03-8620-925c697c557c" xlink:to="loc_dei_EntityDomain_e55766cb-8101-4c03-8620-925c697c557c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a4fb2232-ba51-45c1-b4d1-0c8273286203" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_e55766cb-8101-4c03-8620-925c697c557c" xlink:to="loc_dei_EntityDomain_a4fb2232-ba51-45c1-b4d1-0c8273286203" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReconciliationofrevenuefromcontractswithcustomersTableTextBlock_10d0bc06-a391-4b92-ad25-2db3d936c304" xlink:href="ppl-20250630.xsd#ppl_ReconciliationofrevenuefromcontractswithcustomersTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RevenuefromcontractswithcustomersLineItems_45784271-c4a5-46c0-b901-4c8964bd21d7" xlink:to="loc_ppl_ReconciliationofrevenuefromcontractswithcustomersTableTextBlock_10d0bc06-a391-4b92-ad25-2db3d936c304" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTableTextBlock_999e2782-8919-4927-ae90-8ca3507247de" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RevenuefromcontractswithcustomersLineItems_45784271-c4a5-46c0-b901-4c8964bd21d7" xlink:to="loc_us-gaap_DisaggregationOfRevenueTableTextBlock_999e2782-8919-4927-ae90-8ca3507247de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CreditlossrecognizedfromcontractwithcustomerTableTextBlock_b5e0c2eb-8a39-4ac9-b9c9-6bac07f4c148" xlink:href="ppl-20250630.xsd#ppl_CreditlossrecognizedfromcontractwithcustomerTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RevenuefromcontractswithcustomersLineItems_45784271-c4a5-46c0-b901-4c8964bd21d7" xlink:to="loc_ppl_CreditlossrecognizedfromcontractwithcustomerTableTextBlock_b5e0c2eb-8a39-4ac9-b9c9-6bac07f4c148" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_bb49a0b6-86f0-458d-ab7f-1e36c1f48ad5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RevenuefromcontractswithcustomersLineItems_45784271-c4a5-46c0-b901-4c8964bd21d7" xlink:to="loc_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_bb49a0b6-86f0-458d-ab7f-1e36c1f48ad5" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/IncomeTaxesTables" xlink:type="simple" xlink:href="ppl-20250630.xsd#IncomeTaxesTables"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/IncomeTaxesTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IncomeTaxesLineItems_b3a856a4-cf32-4de2-834b-002ae3684ff1" xlink:href="ppl-20250630.xsd#ppl_IncomeTaxesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IncomeTaxesTable_ff31fd7e-4b5c-4c6c-9405-c54f5ab109bc" xlink:href="ppl-20250630.xsd#ppl_IncomeTaxesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_IncomeTaxesLineItems_b3a856a4-cf32-4de2-834b-002ae3684ff1" xlink:to="loc_ppl_IncomeTaxesTable_ff31fd7e-4b5c-4c6c-9405-c54f5ab109bc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_ee8dff7c-c7a6-4ded-acd3-868e4ee5810a" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_IncomeTaxesTable_ff31fd7e-4b5c-4c6c-9405-c54f5ab109bc" xlink:to="loc_dei_LegalEntityAxis_ee8dff7c-c7a6-4ded-acd3-868e4ee5810a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ee8dff7c-c7a6-4ded-acd3-868e4ee5810a_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_ee8dff7c-c7a6-4ded-acd3-868e4ee5810a" xlink:to="loc_dei_EntityDomain_ee8dff7c-c7a6-4ded-acd3-868e4ee5810a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_61762786-e10f-4b01-94e2-a08abae6bc4b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_ee8dff7c-c7a6-4ded-acd3-868e4ee5810a" xlink:to="loc_dei_EntityDomain_61762786-e10f-4b01-94e2-a08abae6bc4b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_897b636a-eac0-43a4-846b-0b071f8f8287" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_61762786-e10f-4b01-94e2-a08abae6bc4b" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_897b636a-eac0-43a4-846b-0b071f8f8287" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_cd7c975a-581a-43a9-9f1f-f2befc1a23ee" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_61762786-e10f-4b01-94e2-a08abae6bc4b" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_cd7c975a-581a-43a9-9f1f-f2befc1a23ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_8348a4ba-32f7-46f6-b0e7-77c0905edec1" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_61762786-e10f-4b01-94e2-a08abae6bc4b" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_8348a4ba-32f7-46f6-b0e7-77c0905edec1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_5785c043-315f-4886-99b7-931af8eb75f4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncomeTaxesLineItems_b3a856a4-cf32-4de2-834b-002ae3684ff1" xlink:to="loc_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_5785c043-315f-4886-99b7-931af8eb75f4" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/UtilityRateRegulationTables" xlink:type="simple" xlink:href="ppl-20250630.xsd#UtilityRateRegulationTables"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/UtilityRateRegulationTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatedOperationsLineItems_7095f91e-ce53-4762-b650-095347b367c1" xlink:href="ppl-20250630.xsd#ppl_RegulatedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisclosureTable_664014df-2c63-42fb-8df7-6ff8cf1483bb" xlink:href="ppl-20250630.xsd#ppl_DisclosureTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_RegulatedOperationsLineItems_7095f91e-ce53-4762-b650-095347b367c1" xlink:to="loc_ppl_DisclosureTable_664014df-2c63-42fb-8df7-6ff8cf1483bb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8ac4b880-f224-48ad-a4ad-c8639b0f0242" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_DisclosureTable_664014df-2c63-42fb-8df7-6ff8cf1483bb" xlink:to="loc_dei_LegalEntityAxis_8ac4b880-f224-48ad-a4ad-c8639b0f0242" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8ac4b880-f224-48ad-a4ad-c8639b0f0242_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8ac4b880-f224-48ad-a4ad-c8639b0f0242" xlink:to="loc_dei_EntityDomain_8ac4b880-f224-48ad-a4ad-c8639b0f0242_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_36478d9d-899d-463d-a4d6-b92ee99f5b30" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8ac4b880-f224-48ad-a4ad-c8639b0f0242" xlink:to="loc_dei_EntityDomain_36478d9d-899d-463d-a4d6-b92ee99f5b30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_40b4a1e4-d6d8-4d7e-8bb1-fc7701b1d6df" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_36478d9d-899d-463d-a4d6-b92ee99f5b30" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_40b4a1e4-d6d8-4d7e-8bb1-fc7701b1d6df" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_342adb64-6939-4f1f-af75-d43b0c3fb9ba" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_36478d9d-899d-463d-a4d6-b92ee99f5b30" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_342adb64-6939-4f1f-af75-d43b0c3fb9ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_ffe30049-78f6-4731-946b-de70967e8b47" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_36478d9d-899d-463d-a4d6-b92ee99f5b30" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_ffe30049-78f6-4731-946b-de70967e8b47" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ScheduleOfRegulatoryAssetsAndLiabilitiesTableTextBlock_5fa9905e-ca4a-4179-9f52-bb50880eff65" xlink:href="ppl-20250630.xsd#ppl_ScheduleOfRegulatoryAssetsAndLiabilitiesTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatedOperationsLineItems_7095f91e-ce53-4762-b650-095347b367c1" xlink:to="loc_ppl_ScheduleOfRegulatoryAssetsAndLiabilitiesTableTextBlock_5fa9905e-ca4a-4179-9f52-bb50880eff65" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/LeasesTables" xlink:type="simple" xlink:href="ppl-20250630.xsd#LeasesTables"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/LeasesTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_ed8341f1-60ba-48e3-85af-9d3a4cb75c9c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_ad632966-5853-42f3-ac7f-d9e04e69c68c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_ed8341f1-60ba-48e3-85af-9d3a4cb75c9c" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_ad632966-5853-42f3-ac7f-d9e04e69c68c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_266e5790-1ec9-4747-8e99-20c7b15ea274" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_ad632966-5853-42f3-ac7f-d9e04e69c68c" xlink:to="loc_dei_LegalEntityAxis_266e5790-1ec9-4747-8e99-20c7b15ea274" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_266e5790-1ec9-4747-8e99-20c7b15ea274_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_266e5790-1ec9-4747-8e99-20c7b15ea274" xlink:to="loc_dei_EntityDomain_266e5790-1ec9-4747-8e99-20c7b15ea274_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a4819438-e19a-4ebe-9af2-51d8120c591e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_266e5790-1ec9-4747-8e99-20c7b15ea274" xlink:to="loc_dei_EntityDomain_a4819438-e19a-4ebe-9af2-51d8120c591e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_a741937d-f07e-4689-921b-b2ac4956eadd" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a4819438-e19a-4ebe-9af2-51d8120c591e" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_a741937d-f07e-4689-921b-b2ac4956eadd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_a3feeed4-4a58-4c31-8e94-9153c7bcde92" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a4819438-e19a-4ebe-9af2-51d8120c591e" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_a3feeed4-4a58-4c31-8e94-9153c7bcde92" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/DefinedBenefitsTables" xlink:type="simple" xlink:href="ppl-20250630.xsd#DefinedBenefitsTables"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/DefinedBenefitsTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_0cbd3d0d-b96e-4442-805e-e111894ea6c4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_8a6efedc-2686-418a-90a0-f0088a4abfab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_0cbd3d0d-b96e-4442-805e-e111894ea6c4" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_8a6efedc-2686-418a-90a0-f0088a4abfab" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_e258fe05-cb4e-47af-95e9-bb4599974be6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_8a6efedc-2686-418a-90a0-f0088a4abfab" xlink:to="loc_dei_LegalEntityAxis_e258fe05-cb4e-47af-95e9-bb4599974be6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e258fe05-cb4e-47af-95e9-bb4599974be6_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_e258fe05-cb4e-47af-95e9-bb4599974be6" xlink:to="loc_dei_EntityDomain_e258fe05-cb4e-47af-95e9-bb4599974be6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_52e47843-0dac-40cd-803e-f40ce9d66cf3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_e258fe05-cb4e-47af-95e9-bb4599974be6" xlink:to="loc_dei_EntityDomain_52e47843-0dac-40cd-803e-f40ce9d66cf3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_8d6a6b74-8866-41b5-9c05-eb78df91e17a" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_52e47843-0dac-40cd-803e-f40ce9d66cf3" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_8d6a6b74-8866-41b5-9c05-eb78df91e17a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_dd1e8049-d12e-4ac6-bd09-fcb848ff9310" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_52e47843-0dac-40cd-803e-f40ce9d66cf3" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_dd1e8049-d12e-4ac6-bd09-fcb848ff9310" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_f83108eb-8d9a-48e0-850d-4c095bcd3812" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_52e47843-0dac-40cd-803e-f40ce9d66cf3" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_f83108eb-8d9a-48e0-850d-4c095bcd3812" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock_6e4e1807-a366-4a10-ba70-e97393b71fe5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_0cbd3d0d-b96e-4442-805e-e111894ea6c4" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock_6e4e1807-a366-4a10-ba70-e97393b71fe5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ScheduleOfNetPeriodicBenefitCostsAllocationTableTextBlock_7b7a3f44-a565-4c55-844b-43c5ccd62b9c" xlink:href="ppl-20250630.xsd#ppl_ScheduleOfNetPeriodicBenefitCostsAllocationTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_0cbd3d0d-b96e-4442-805e-e111894ea6c4" xlink:to="loc_ppl_ScheduleOfNetPeriodicBenefitCostsAllocationTableTextBlock_7b7a3f44-a565-4c55-844b-43c5ccd62b9c" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/RelatedPartyTransactionsTables" xlink:type="simple" xlink:href="ppl-20250630.xsd#RelatedPartyTransactionsTables"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/RelatedPartyTransactionsTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_f0f1269e-8c9d-445b-ae91-e1eb9b2f1ce5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisclosureTable_3feaa727-2664-4f15-bedb-29b0ddf48416" xlink:href="ppl-20250630.xsd#ppl_DisclosureTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_f0f1269e-8c9d-445b-ae91-e1eb9b2f1ce5" xlink:to="loc_ppl_DisclosureTable_3feaa727-2664-4f15-bedb-29b0ddf48416" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_5590ee0d-5cf1-4d72-8a7a-865580f1bfb4" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_DisclosureTable_3feaa727-2664-4f15-bedb-29b0ddf48416" xlink:to="loc_dei_LegalEntityAxis_5590ee0d-5cf1-4d72-8a7a-865580f1bfb4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5590ee0d-5cf1-4d72-8a7a-865580f1bfb4_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_5590ee0d-5cf1-4d72-8a7a-865580f1bfb4" xlink:to="loc_dei_EntityDomain_5590ee0d-5cf1-4d72-8a7a-865580f1bfb4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8d36bf79-11c6-421e-ba05-e0f539712191" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_5590ee0d-5cf1-4d72-8a7a-865580f1bfb4" xlink:to="loc_dei_EntityDomain_8d36bf79-11c6-421e-ba05-e0f539712191" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_8ba9e89f-b1a0-4524-af9a-184962fea3ef" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8d36bf79-11c6-421e-ba05-e0f539712191" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_8ba9e89f-b1a0-4524-af9a-184962fea3ef" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_d73c8317-9841-4921-b0a0-5b86149b68a0" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8d36bf79-11c6-421e-ba05-e0f539712191" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_d73c8317-9841-4921-b0a0-5b86149b68a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_6b409434-f410-46a5-8555-2ca661c42b15" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8d36bf79-11c6-421e-ba05-e0f539712191" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_6b409434-f410-46a5-8555-2ca661c42b15" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ScheduleOfIntercompanySupportCostAllocationsTableTextBlock_d30ece67-1cfe-4ceb-a975-6c42fc7f1dfd" xlink:href="ppl-20250630.xsd#ppl_ScheduleOfIntercompanySupportCostAllocationsTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_f0f1269e-8c9d-445b-ae91-e1eb9b2f1ce5" xlink:to="loc_ppl_ScheduleOfIntercompanySupportCostAllocationsTableTextBlock_d30ece67-1cfe-4ceb-a975-6c42fc7f1dfd" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/OtherIncomeExpensenetTables" xlink:type="simple" xlink:href="ppl-20250630.xsd#OtherIncomeExpensenetTables"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/OtherIncomeExpensenetTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherIncomeExpenseNetLineItems_d5c21f5e-0440-48f0-9af0-f634dcd97130" xlink:href="ppl-20250630.xsd#ppl_OtherIncomeExpenseNetLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisclosureTable_7cc91d9b-71cc-40dd-80ba-ad9f2a497d6f" xlink:href="ppl-20250630.xsd#ppl_DisclosureTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_OtherIncomeExpenseNetLineItems_d5c21f5e-0440-48f0-9af0-f634dcd97130" xlink:to="loc_ppl_DisclosureTable_7cc91d9b-71cc-40dd-80ba-ad9f2a497d6f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_85acc116-32a3-46ba-acce-c53c5312367c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_DisclosureTable_7cc91d9b-71cc-40dd-80ba-ad9f2a497d6f" xlink:to="loc_dei_LegalEntityAxis_85acc116-32a3-46ba-acce-c53c5312367c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_85acc116-32a3-46ba-acce-c53c5312367c_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_85acc116-32a3-46ba-acce-c53c5312367c" xlink:to="loc_dei_EntityDomain_85acc116-32a3-46ba-acce-c53c5312367c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_393d75b9-55b5-4f35-9b1b-0e884cb9f9e1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_85acc116-32a3-46ba-acce-c53c5312367c" xlink:to="loc_dei_EntityDomain_393d75b9-55b5-4f35-9b1b-0e884cb9f9e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_cd3e33ef-ff21-4471-bc78-9385fcf885aa" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_393d75b9-55b5-4f35-9b1b-0e884cb9f9e1" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_cd3e33ef-ff21-4471-bc78-9385fcf885aa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_21b7a126-75f4-445a-8ecc-c601e0ab6035" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_393d75b9-55b5-4f35-9b1b-0e884cb9f9e1" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_21b7a126-75f4-445a-8ecc-c601e0ab6035" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_5c95efd0-c3b9-475c-934b-42fb74f4127a" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_393d75b9-55b5-4f35-9b1b-0e884cb9f9e1" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_5c95efd0-c3b9-475c-934b-42fb74f4127a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_11f6bda7-dd2d-4154-ba76-6c752baf85ba" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherIncomeExpenseNetLineItems_d5c21f5e-0440-48f0-9af0-f634dcd97130" xlink:to="loc_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_11f6bda7-dd2d-4154-ba76-6c752baf85ba" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesTables" xlink:type="simple" xlink:href="ppl-20250630.xsd#DerivativeInstrumentsandHedgingActivitiesTables"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeInstrumentsAndHedgingActivitiesLineItems_12ee84cf-ffb4-4915-8971-f2e1c8df51a8" xlink:href="ppl-20250630.xsd#ppl_DerivativeInstrumentsAndHedgingActivitiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisclosureTable_a881f53c-c801-4193-a826-8e1ccaec1a99" xlink:href="ppl-20250630.xsd#ppl_DisclosureTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_DerivativeInstrumentsAndHedgingActivitiesLineItems_12ee84cf-ffb4-4915-8971-f2e1c8df51a8" xlink:to="loc_ppl_DisclosureTable_a881f53c-c801-4193-a826-8e1ccaec1a99" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_58f8299b-5dfb-43f3-b949-f12fec136dda" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_DisclosureTable_a881f53c-c801-4193-a826-8e1ccaec1a99" xlink:to="loc_dei_LegalEntityAxis_58f8299b-5dfb-43f3-b949-f12fec136dda" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_58f8299b-5dfb-43f3-b949-f12fec136dda_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_58f8299b-5dfb-43f3-b949-f12fec136dda" xlink:to="loc_dei_EntityDomain_58f8299b-5dfb-43f3-b949-f12fec136dda_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0a277b42-1879-493d-9bb4-2007a184a41f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_58f8299b-5dfb-43f3-b949-f12fec136dda" xlink:to="loc_dei_EntityDomain_0a277b42-1879-493d-9bb4-2007a184a41f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_b16e93f4-27fb-419d-92ea-d1cffcf16c2c" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0a277b42-1879-493d-9bb4-2007a184a41f" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_b16e93f4-27fb-419d-92ea-d1cffcf16c2c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_f851bade-3c07-4a97-8965-fa7148a7e6af" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0a277b42-1879-493d-9bb4-2007a184a41f" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_f851bade-3c07-4a97-8965-fa7148a7e6af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_1ee6bd83-be77-46d5-9b71-34965197955d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DerivativeInstrumentsAndHedgingActivitiesLineItems_12ee84cf-ffb4-4915-8971-f2e1c8df51a8" xlink:to="loc_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_1ee6bd83-be77-46d5-9b71-34965197955d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock_cf8b5e73-64f7-4fcd-bc4d-9f4da4787577" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DerivativeInstrumentsAndHedgingActivitiesLineItems_12ee84cf-ffb4-4915-8971-f2e1c8df51a8" xlink:to="loc_us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock_cf8b5e73-64f7-4fcd-bc4d-9f4da4787577" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OffsettingAssetsAndLiabilitiesTableTextBlock_bb4f2b2b-1806-43b5-9f18-0279284c69ff" xlink:href="ppl-20250630.xsd#ppl_OffsettingAssetsAndLiabilitiesTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DerivativeInstrumentsAndHedgingActivitiesLineItems_12ee84cf-ffb4-4915-8971-f2e1c8df51a8" xlink:to="loc_ppl_OffsettingAssetsAndLiabilitiesTableTextBlock_bb4f2b2b-1806-43b5-9f18-0279284c69ff" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CreditRiskRelatedContingentFeaturesTableTextBlock_ad77ca92-8e9d-41fd-bbd6-231b91385064" xlink:href="ppl-20250630.xsd#ppl_CreditRiskRelatedContingentFeaturesTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DerivativeInstrumentsAndHedgingActivitiesLineItems_12ee84cf-ffb4-4915-8971-f2e1c8df51a8" xlink:to="loc_ppl_CreditRiskRelatedContingentFeaturesTableTextBlock_ad77ca92-8e9d-41fd-bbd6-231b91385064" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/AssetRetirementObligationsTables" xlink:type="simple" xlink:href="ppl-20250630.xsd#AssetRetirementObligationsTables"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/AssetRetirementObligationsTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AssetRetirementObligationLineItems_87409fed-57d2-4d66-8ea5-0715de206c72" xlink:href="ppl-20250630.xsd#ppl_AssetRetirementObligationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisclosureTable_d09b5898-5fcf-4f26-9f67-0bffe64fa85b" xlink:href="ppl-20250630.xsd#ppl_DisclosureTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_AssetRetirementObligationLineItems_87409fed-57d2-4d66-8ea5-0715de206c72" xlink:to="loc_ppl_DisclosureTable_d09b5898-5fcf-4f26-9f67-0bffe64fa85b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_96c82bb7-826d-40a0-b939-8141ae6054e5" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_DisclosureTable_d09b5898-5fcf-4f26-9f67-0bffe64fa85b" xlink:to="loc_dei_LegalEntityAxis_96c82bb7-826d-40a0-b939-8141ae6054e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_96c82bb7-826d-40a0-b939-8141ae6054e5_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_96c82bb7-826d-40a0-b939-8141ae6054e5" xlink:to="loc_dei_EntityDomain_96c82bb7-826d-40a0-b939-8141ae6054e5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_188f8e38-92e7-4930-9e81-85e7002689c1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_96c82bb7-826d-40a0-b939-8141ae6054e5" xlink:to="loc_dei_EntityDomain_188f8e38-92e7-4930-9e81-85e7002689c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_fd0763b5-61aa-4f07-9252-d4710a407053" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_188f8e38-92e7-4930-9e81-85e7002689c1" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_fd0763b5-61aa-4f07-9252-d4710a407053" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_942d4dbb-fcb1-4dc7-a788-99a06a4dd545" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_188f8e38-92e7-4930-9e81-85e7002689c1" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_942d4dbb-fcb1-4dc7-a788-99a06a4dd545" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock_e3d806b5-6b79-4ff4-9a69-1994e96c576b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AssetRetirementObligationLineItems_87409fed-57d2-4d66-8ea5-0715de206c72" xlink:to="loc_us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock_e3d806b5-6b79-4ff4-9a69-1994e96c576b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/AccumulatedOtherComprehensiveIncomeLossTables" xlink:type="simple" xlink:href="ppl-20250630.xsd#AccumulatedOtherComprehensiveIncomeLossTables"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/AccumulatedOtherComprehensiveIncomeLossTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_11b6a099-57df-46e1-94e5-77d3a2c63e16" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_97543dfe-fdf9-48c6-a9a6-45ed80e2006e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_11b6a099-57df-46e1-94e5-77d3a2c63e16" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_97543dfe-fdf9-48c6-a9a6-45ed80e2006e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_136539bc-2990-4860-8356-a99aee9eb377" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_11b6a099-57df-46e1-94e5-77d3a2c63e16" xlink:to="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_136539bc-2990-4860-8356-a99aee9eb377" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock_d5f2ee0f-47c0-43a0-943f-ffd194349b43" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_11b6a099-57df-46e1-94e5-77d3a2c63e16" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock_d5f2ee0f-47c0-43a0-943f-ffd194349b43" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/SummaryofSignificantAccountingPoliciesDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#SummaryofSignificantAccountingPoliciesDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/SummaryofSignificantAccountingPoliciesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SummaryOfSignificantAccountingPoliciesLineItems_fdd6844c-d14e-4b03-8087-e0f3249aa120" xlink:href="ppl-20250630.xsd#ppl_SummaryOfSignificantAccountingPoliciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SummaryOfSignificantAccountingPoliciesTable_47ffd333-0462-4577-8a32-214d8829f59e" xlink:href="ppl-20250630.xsd#ppl_SummaryOfSignificantAccountingPoliciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_SummaryOfSignificantAccountingPoliciesLineItems_fdd6844c-d14e-4b03-8087-e0f3249aa120" xlink:to="loc_ppl_SummaryOfSignificantAccountingPoliciesTable_47ffd333-0462-4577-8a32-214d8829f59e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_4f0f7358-2f7d-4713-9998-4b817d41239b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_SummaryOfSignificantAccountingPoliciesTable_47ffd333-0462-4577-8a32-214d8829f59e" xlink:to="loc_dei_LegalEntityAxis_4f0f7358-2f7d-4713-9998-4b817d41239b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4f0f7358-2f7d-4713-9998-4b817d41239b_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_4f0f7358-2f7d-4713-9998-4b817d41239b" xlink:to="loc_dei_EntityDomain_4f0f7358-2f7d-4713-9998-4b817d41239b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_6eef7bcd-56d1-4237-9d42-ceeb42869569" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_4f0f7358-2f7d-4713-9998-4b817d41239b" xlink:to="loc_dei_EntityDomain_6eef7bcd-56d1-4237-9d42-ceeb42869569" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_bc98ea23-246e-4ffa-830e-04ad0100d832" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_6eef7bcd-56d1-4237-9d42-ceeb42869569" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_bc98ea23-246e-4ffa-830e-04ad0100d832" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_5691d25c-27ee-4345-8c27-36d9ecdb2130" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_6eef7bcd-56d1-4237-9d42-ceeb42869569" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_5691d25c-27ee-4345-8c27-36d9ecdb2130" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_b13193e0-423c-4612-9abc-69bd13a33edc" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_6eef7bcd-56d1-4237-9d42-ceeb42869569" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_b13193e0-423c-4612-9abc-69bd13a33edc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_d4592d4b-fbe4-41ed-9cf0-659d658cb047" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_SummaryOfSignificantAccountingPoliciesTable_47ffd333-0462-4577-8a32-214d8829f59e" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_d4592d4b-fbe4-41ed-9cf0-659d658cb047" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_d4592d4b-fbe4-41ed-9cf0-659d658cb047_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_d4592d4b-fbe4-41ed-9cf0-659d658cb047" xlink:to="loc_us-gaap_SegmentDomain_d4592d4b-fbe4-41ed-9cf0-659d658cb047_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_41bc1a18-7d54-4f98-9d79-ff55d422e16f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_d4592d4b-fbe4-41ed-9cf0-659d658cb047" xlink:to="loc_us-gaap_SegmentDomain_41bc1a18-7d54-4f98-9d79-ff55d422e16f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_UnitedKingdomRegulatedMember_a633314f-a7ba-4e0e-aa63-cabf77794b99" xlink:href="ppl-20250630.xsd#ppl_UnitedKingdomRegulatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_41bc1a18-7d54-4f98-9d79-ff55d422e16f" xlink:to="loc_ppl_UnitedKingdomRegulatedMember_a633314f-a7ba-4e0e-aa63-cabf77794b99" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateMember_9264ecf9-9b34-40f5-9832-ced3579e0a43" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_41bc1a18-7d54-4f98-9d79-ff55d422e16f" xlink:to="loc_us-gaap_CorporateMember_9264ecf9-9b34-40f5-9832-ced3579e0a43" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_f557fcc7-a94f-410b-a67d-98f5861d2387" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_SummaryOfSignificantAccountingPoliciesTable_47ffd333-0462-4577-8a32-214d8829f59e" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_f557fcc7-a94f-410b-a67d-98f5861d2387" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_f557fcc7-a94f-410b-a67d-98f5861d2387_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_f557fcc7-a94f-410b-a67d-98f5861d2387" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_f557fcc7-a94f-410b-a67d-98f5861d2387_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_0d124b29-f2cd-47f2-8ae9-127c3c5907af" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_f557fcc7-a94f-410b-a67d-98f5861d2387" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_0d124b29-f2cd-47f2-8ae9-127c3c5907af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentAssetsMember_ef6abef2-e9e5-4301-aa70-85ef0de7aaa3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNoncurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_0d124b29-f2cd-47f2-8ae9-127c3c5907af" xlink:to="loc_us-gaap_OtherNoncurrentAssetsMember_ef6abef2-e9e5-4301-aa70-85ef0de7aaa3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_bcb72491-d52d-4c59-87e6-7e1581e7ae96" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_SummaryOfSignificantAccountingPoliciesTable_47ffd333-0462-4577-8a32-214d8829f59e" xlink:to="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_bcb72491-d52d-4c59-87e6-7e1581e7ae96" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_bcb72491-d52d-4c59-87e6-7e1581e7ae96_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ChangeInAccountingPrincipleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_bcb72491-d52d-4c59-87e6-7e1581e7ae96" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_bcb72491-d52d-4c59-87e6-7e1581e7ae96_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_790f80f9-4782-4d97-a63c-44830c631cad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ChangeInAccountingPrincipleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_bcb72491-d52d-4c59-87e6-7e1581e7ae96" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_790f80f9-4782-4d97-a63c-44830c631cad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_7c703fe5-ff13-442e-be2b-fc3a012723c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_SummaryOfSignificantAccountingPoliciesLineItems_fdd6844c-d14e-4b03-8087-e0f3249aa120" xlink:to="loc_us-gaap_Goodwill_7c703fe5-ff13-442e-be2b-fc3a012723c7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReconciliationofCashCashEquivalentsandRestrictedCashfromtheBalanceSheettoCashFlowLineItems_35e1083a-e156-44f7-b146-753205f03257" xlink:href="ppl-20250630.xsd#ppl_ReconciliationofCashCashEquivalentsandRestrictedCashfromtheBalanceSheettoCashFlowLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReconciliationofCashCashEquivalentsandRestrictedCashfromtheBalanceSheettoCashFlowTable_460b8468-78f8-4e27-95e2-687842f9eb0f" xlink:href="ppl-20250630.xsd#ppl_ReconciliationofCashCashEquivalentsandRestrictedCashfromtheBalanceSheettoCashFlowTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_ReconciliationofCashCashEquivalentsandRestrictedCashfromtheBalanceSheettoCashFlowLineItems_35e1083a-e156-44f7-b146-753205f03257" xlink:to="loc_ppl_ReconciliationofCashCashEquivalentsandRestrictedCashfromtheBalanceSheettoCashFlowTable_460b8468-78f8-4e27-95e2-687842f9eb0f" xlink:type="arc" order="2" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_7ceabd57-2236-4a60-b2d5-c545515b9120" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_ReconciliationofCashCashEquivalentsandRestrictedCashfromtheBalanceSheettoCashFlowTable_460b8468-78f8-4e27-95e2-687842f9eb0f" xlink:to="loc_dei_LegalEntityAxis_7ceabd57-2236-4a60-b2d5-c545515b9120" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7ceabd57-2236-4a60-b2d5-c545515b9120_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a5401932-5daa-4f1e-a88c-9979557f9be9" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_69d8dfed-7a2e-4d5e-a152-ab60cef68fa3" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_80b6a158-7b5a-4fe8-b420-b575d95ba149" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_4f935b29-83d7-42db-bfc0-838d27883bb7" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_35a5d8d5-abef-4167-af8d-8d1e944251df" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ReconciliationofCashCashEquivalentsandRestrictedCashfromtheBalanceSheettoCashFlowLineItems_35e1083a-e156-44f7-b146-753205f03257" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_35a5d8d5-abef-4167-af8d-8d1e944251df" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashCurrent_fb13572f-488d-4183-94f5-d2107542c4f2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ReconciliationofCashCashEquivalentsandRestrictedCashfromtheBalanceSheettoCashFlowLineItems_35e1083a-e156-44f7-b146-753205f03257" xlink:to="loc_us-gaap_RestrictedCashCurrent_fb13572f-488d-4183-94f5-d2107542c4f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashNoncurrent_e752f7dc-601f-4b7c-8add-d718ba00fba0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ReconciliationofCashCashEquivalentsandRestrictedCashfromtheBalanceSheettoCashFlowLineItems_35e1083a-e156-44f7-b146-753205f03257" xlink:to="loc_us-gaap_RestrictedCashNoncurrent_e752f7dc-601f-4b7c-8add-d718ba00fba0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TotalCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_115d7b5a-113b-490a-8512-1c30c1a9cd1e" xlink:href="ppl-20250630.xsd#ppl_TotalCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ReconciliationofCashCashEquivalentsandRestrictedCashfromtheBalanceSheettoCashFlowLineItems_35e1083a-e156-44f7-b146-753205f03257" xlink:to="loc_ppl_TotalCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_115d7b5a-113b-490a-8512-1c30c1a9cd1e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_7fe9f660-e2f0-4371-8c25-d2a180f8e116" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_f6ae9f64-d4f8-45f0-9a56-669dd0f413f4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_7fe9f660-e2f0-4371-8c25-d2a180f8e116" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_f6ae9f64-d4f8-45f0-9a56-669dd0f413f4" xlink:type="arc" order="3" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8fb56864-d7d1-4a43-913e-21b45334e1c0" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_f6ae9f64-d4f8-45f0-9a56-669dd0f413f4" xlink:to="loc_dei_LegalEntityAxis_8fb56864-d7d1-4a43-913e-21b45334e1c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8fb56864-d7d1-4a43-913e-21b45334e1c0_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_acaa0606-6fb2-42d0-a703-398d5275e7d3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_14eb3fbd-0321-4383-ade0-00b0f5f817d7" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_ba0f9dca-3517-4d9c-9c3b-652dcf5af4f5" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_9375d22b-0638-4db5-b528-344fb225a12f" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_c6f18d2f-bb65-4e5c-8cb2-e7222083ce6c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_f6ae9f64-d4f8-45f0-9a56-669dd0f413f4" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_c6f18d2f-bb65-4e5c-8cb2-e7222083ce6c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_c6f18d2f-bb65-4e5c-8cb2-e7222083ce6c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_c6f18d2f-bb65-4e5c-8cb2-e7222083ce6c" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_c6f18d2f-bb65-4e5c-8cb2-e7222083ce6c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_4385d33b-000b-49f6-8731-1bdc46bd636f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_c6f18d2f-bb65-4e5c-8cb2-e7222083ce6c" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_4385d33b-000b-49f6-8731-1bdc46bd636f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccountsReceivableCustomerandUnbilledRevenueMember_61d0d58f-e32f-4847-96eb-b039d548e09e" xlink:href="ppl-20250630.xsd#ppl_AccountsReceivableCustomerandUnbilledRevenueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_4385d33b-000b-49f6-8731-1bdc46bd636f" xlink:to="loc_ppl_AccountsReceivableCustomerandUnbilledRevenueMember_61d0d58f-e32f-4847-96eb-b039d548e09e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherClassofFinancingReceivableMember_0d76af76-671f-46c9-a58b-4cf4e5ae7917" xlink:href="ppl-20250630.xsd#ppl_OtherClassofFinancingReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_4385d33b-000b-49f6-8731-1bdc46bd636f" xlink:to="loc_ppl_OtherClassofFinancingReceivableMember_0d76af76-671f-46c9-a58b-4cf4e5ae7917" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_46e8a90d-6831-452c-b674-8f096e4eb85d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_7fe9f660-e2f0-4371-8c25-d2a180f8e116" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_46e8a90d-6831-452c-b674-8f096e4eb85d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForLoanLossesExpensed_946ca6b7-58be-4db7-bc66-f4d8b099ff21" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProvisionForLoanLossesExpensed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_7fe9f660-e2f0-4371-8c25-d2a180f8e116" xlink:to="loc_us-gaap_ProvisionForLoanLossesExpensed_946ca6b7-58be-4db7-bc66-f4d8b099ff21" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_597ec812-3635-450d-b3db-46c3990ca45e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_7fe9f660-e2f0-4371-8c25-d2a180f8e116" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_597ec812-3635-450d-b3db-46c3990ca45e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_f1f77cc0-862f-47cb-9e86-565a54b7f9a5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_2b4b31a2-7485-41f9-92ff-256bfacacbc9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_f1f77cc0-862f-47cb-9e86-565a54b7f9a5" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_2b4b31a2-7485-41f9-92ff-256bfacacbc9" xlink:type="arc" order="4" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_35231dfb-885c-4ffb-8f0c-6544eef07221" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_2b4b31a2-7485-41f9-92ff-256bfacacbc9" xlink:to="loc_dei_LegalEntityAxis_35231dfb-885c-4ffb-8f0c-6544eef07221" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_35231dfb-885c-4ffb-8f0c-6544eef07221_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_6dbf5d14-e16a-473e-85dc-c4b4a48c5fd2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_48e0f42f-19a3-4fa4-8e07-36cb502a8166" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_587f22f9-fef5-4692-af94-30099ac5b713" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_5d2880d4-7f65-435c-9feb-4fbc11dbae29" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_b91a5dbf-42c9-4726-a7a6-3921fa6931af" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_67335459-be77-4a2c-a64f-a50872d1cb0a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_4f160c11-71d4-473a-acc9-910e1aa7b9be" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4f160c11-71d4-473a-acc9-910e1aa7b9be_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_c3919147-ebaa-4b83-8138-ce9ceaf2936d" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_1879af85-bc07-46fd-9088-f5782142ce14" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/SegmentandRelatedInformationDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#SegmentandRelatedInformationDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/SegmentandRelatedInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_2e59dc87-d0f6-42bf-9225-0ebb502cc7a1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_45d38a7d-a918-4327-9d4a-cc81abf3d479" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2e59dc87-d0f6-42bf-9225-0ebb502cc7a1" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_45d38a7d-a918-4327-9d4a-cc81abf3d479" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_baa69bf2-628d-4e4b-ba11-4be64be1966c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_45d38a7d-a918-4327-9d4a-cc81abf3d479" xlink:to="loc_dei_LegalEntityAxis_baa69bf2-628d-4e4b-ba11-4be64be1966c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_baa69bf2-628d-4e4b-ba11-4be64be1966c_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_baa69bf2-628d-4e4b-ba11-4be64be1966c" xlink:to="loc_dei_EntityDomain_baa69bf2-628d-4e4b-ba11-4be64be1966c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_908bde60-d9af-4190-b7a5-dd6e275310c2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_baa69bf2-628d-4e4b-ba11-4be64be1966c" xlink:to="loc_dei_EntityDomain_908bde60-d9af-4190-b7a5-dd6e275310c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_a24822a4-ee6a-4866-8aca-bd078123c328" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_908bde60-d9af-4190-b7a5-dd6e275310c2" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_a24822a4-ee6a-4866-8aca-bd078123c328" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_b1067f47-bebf-4011-a1c1-e3f9b5b77bde" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_908bde60-d9af-4190-b7a5-dd6e275310c2" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_b1067f47-bebf-4011-a1c1-e3f9b5b77bde" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_7f1109c7-5a19-4023-aee8-5589738d514f" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_908bde60-d9af-4190-b7a5-dd6e275310c2" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_7f1109c7-5a19-4023-aee8-5589738d514f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_2ac844bd-e884-4268-a786-1f7f352a0d13" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_45d38a7d-a918-4327-9d4a-cc81abf3d479" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_2ac844bd-e884-4268-a786-1f7f352a0d13" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_2ac844bd-e884-4268-a786-1f7f352a0d13_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_2ac844bd-e884-4268-a786-1f7f352a0d13" xlink:to="loc_us-gaap_SegmentDomain_2ac844bd-e884-4268-a786-1f7f352a0d13_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_d9bfbb07-7cae-4415-93f0-f3e4a9a95124" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_2ac844bd-e884-4268-a786-1f7f352a0d13" xlink:to="loc_us-gaap_SegmentDomain_d9bfbb07-7cae-4415-93f0-f3e4a9a95124" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TotalSegmentsMember_87145549-5952-4885-bcce-a5cb7a9c9502" xlink:href="ppl-20250630.xsd#ppl_TotalSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_d9bfbb07-7cae-4415-93f0-f3e4a9a95124" xlink:to="loc_ppl_TotalSegmentsMember_87145549-5952-4885-bcce-a5cb7a9c9502" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandRegulatedMember_fb34cf05-f566-4e0e-9803-db017fc8aad8" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandRegulatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_TotalSegmentsMember_87145549-5952-4885-bcce-a5cb7a9c9502" xlink:to="loc_ppl_RhodeIslandRegulatedMember_fb34cf05-f566-4e0e-9803-db017fc8aad8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PennsylvaniaRegulatedMember_f1b51d25-f628-4ca6-bd1d-9eb45c658992" xlink:href="ppl-20250630.xsd#ppl_PennsylvaniaRegulatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_TotalSegmentsMember_87145549-5952-4885-bcce-a5cb7a9c9502" xlink:to="loc_ppl_PennsylvaniaRegulatedMember_f1b51d25-f628-4ca6-bd1d-9eb45c658992" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyRegulatedMember_47ce12e6-6113-4ede-89e9-a26635515929" xlink:href="ppl-20250630.xsd#ppl_KentuckyRegulatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_TotalSegmentsMember_87145549-5952-4885-bcce-a5cb7a9c9502" xlink:to="loc_ppl_KentuckyRegulatedMember_47ce12e6-6113-4ede-89e9-a26635515929" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateMember_5c597b72-d5ec-485b-a825-9fc3c154ec52" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_d9bfbb07-7cae-4415-93f0-f3e4a9a95124" xlink:to="loc_us-gaap_CorporateMember_5c597b72-d5ec-485b-a825-9fc3c154ec52" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d47b27a3-ef48-44a1-9aa2-742dfb0ef763" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_45d38a7d-a918-4327-9d4a-cc81abf3d479" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d47b27a3-ef48-44a1-9aa2-742dfb0ef763" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_d47b27a3-ef48-44a1-9aa2-742dfb0ef763_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d47b27a3-ef48-44a1-9aa2-742dfb0ef763" xlink:to="loc_us-gaap_RelatedPartyDomain_d47b27a3-ef48-44a1-9aa2-742dfb0ef763_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_d4d3e55b-8eeb-4d40-af48-fc5d546d455a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d47b27a3-ef48-44a1-9aa2-742dfb0ef763" xlink:to="loc_us-gaap_RelatedPartyDomain_d4d3e55b-8eeb-4d40-af48-fc5d546d455a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_a409e0be-f5c1-43d4-9819-e3245421370a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_d4d3e55b-8eeb-4d40-af48-fc5d546d455a" xlink:to="loc_us-gaap_RelatedPartyMember_a409e0be-f5c1-43d4-9819-e3245421370a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_7fb87930-9f8f-4547-a446-536dc9402c68" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingInformationProfitLossAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2e59dc87-d0f6-42bf-9225-0ebb502cc7a1" xlink:to="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_7fb87930-9f8f-4547-a446-536dc9402c68" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_9f3b438a-ccc3-40c9-abd6-c9e8fd5f4ce6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_7fb87930-9f8f-4547-a446-536dc9402c68" xlink:to="loc_us-gaap_Revenues_9f3b438a-ccc3-40c9-abd6-c9e8fd5f4ce6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FuelCosts_dc3d6d9a-47e6-47e8-9261-a66032ca4250" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FuelCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_7fb87930-9f8f-4547-a446-536dc9402c68" xlink:to="loc_us-gaap_FuelCosts_dc3d6d9a-47e6-47e8-9261-a66032ca4250" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PurchasedPowerAndGas_bcc304b2-ceeb-4c25-bed9-1dcd692b6aea" xlink:href="ppl-20250630.xsd#ppl_PurchasedPowerAndGas"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_7fb87930-9f8f-4547-a446-536dc9402c68" xlink:to="loc_ppl_PurchasedPowerAndGas_bcc304b2-ceeb-4c25-bed9-1dcd692b6aea" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilitiesOperatingExpenseOperations_4bf4bced-e5bb-4a6a-98fc-5bba7ba91a57" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UtilitiesOperatingExpenseOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_7fb87930-9f8f-4547-a446-536dc9402c68" xlink:to="loc_us-gaap_UtilitiesOperatingExpenseOperations_4bf4bced-e5bb-4a6a-98fc-5bba7ba91a57" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_4b902ae6-4d99-44e1-945d-31c92229fc29" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_7fb87930-9f8f-4547-a446-536dc9402c68" xlink:to="loc_us-gaap_Depreciation_4b902ae6-4d99-44e1-945d-31c92229fc29" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilitiesOperatingExpenseTaxes_cdc2a370-ea4b-4d2d-9d98-e020b29fe706" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UtilitiesOperatingExpenseTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_7fb87930-9f8f-4547-a446-536dc9402c68" xlink:to="loc_us-gaap_UtilitiesOperatingExpenseTaxes_cdc2a370-ea4b-4d2d-9d98-e020b29fe706" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_c83d1736-fd77-435a-ac11-2fe47c00eade" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_7fb87930-9f8f-4547-a446-536dc9402c68" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_c83d1736-fd77-435a-ac11-2fe47c00eade" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_228f11eb-1a0a-4b26-addf-13d6ca72c783" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_7fb87930-9f8f-4547-a446-536dc9402c68" xlink:to="loc_us-gaap_InterestExpense_228f11eb-1a0a-4b26-addf-13d6ca72c783" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_4352c981-b2d3-45aa-a7db-12e2a9d0926e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_7fb87930-9f8f-4547-a446-536dc9402c68" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_4352c981-b2d3-45aa-a7db-12e2a9d0926e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_a2201b84-e532-49e0-b5a5-b6fc0e1afb55" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_7fb87930-9f8f-4547-a446-536dc9402c68" xlink:to="loc_us-gaap_NetIncomeLoss_a2201b84-e532-49e0-b5a5-b6fc0e1afb55" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FinancingCostsAllocatedToSegmentNetOfTax_9aa82164-55c2-44d7-8ba2-a5ca68a7c0ec" xlink:href="ppl-20250630.xsd#ppl_FinancingCostsAllocatedToSegmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_7fb87930-9f8f-4547-a446-536dc9402c68" xlink:to="loc_ppl_FinancingCostsAllocatedToSegmentNetOfTax_9aa82164-55c2-44d7-8ba2-a5ca68a7c0ec" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IncomeTaxesAllocatedToSegment_a354a262-8268-48c2-8d7f-f1d1a5727113" xlink:href="ppl-20250630.xsd#ppl_IncomeTaxesAllocatedToSegment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_7fb87930-9f8f-4547-a446-536dc9402c68" xlink:to="loc_ppl_IncomeTaxesAllocatedToSegment_a354a262-8268-48c2-8d7f-f1d1a5727113" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SegmentReportingInformationBalanceSheetDataAbstract_6dcde433-fd96-4985-87a2-ad6040d21ea9" xlink:href="ppl-20250630.xsd#ppl_SegmentReportingInformationBalanceSheetDataAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2e59dc87-d0f6-42bf-9225-0ebb502cc7a1" xlink:to="loc_ppl_SegmentReportingInformationBalanceSheetDataAbstract_6dcde433-fd96-4985-87a2-ad6040d21ea9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_334bf58e-71b8-490e-ac07-a6928cf75a68" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_SegmentReportingInformationBalanceSheetDataAbstract_6dcde433-fd96-4985-87a2-ad6040d21ea9" xlink:to="loc_us-gaap_Assets_334bf58e-71b8-490e-ac07-a6928cf75a68" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationAdditionalInformationAbstract_49374639-97c6-4a27-a065-5ff7ca43ba53" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingInformationAdditionalInformationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2e59dc87-d0f6-42bf-9225-0ebb502cc7a1" xlink:to="loc_us-gaap_SegmentReportingInformationAdditionalInformationAbstract_49374639-97c6-4a27-a065-5ff7ca43ba53" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SegmentAssetsPropertyPlantAndEquipmentNotSubjectToEffectsOfCertainTypeOfRegulation_3bf0f456-f554-46f6-a46b-c1a9b60eaefd" xlink:href="ppl-20250630.xsd#ppl_SegmentAssetsPropertyPlantAndEquipmentNotSubjectToEffectsOfCertainTypeOfRegulation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationAdditionalInformationAbstract_49374639-97c6-4a27-a065-5ff7ca43ba53" xlink:to="loc_ppl_SegmentAssetsPropertyPlantAndEquipmentNotSubjectToEffectsOfCertainTypeOfRegulation_3bf0f456-f554-46f6-a46b-c1a9b60eaefd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_0dd12617-fdf9-4822-a57c-80b751ed74d4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationAdditionalInformationAbstract_49374639-97c6-4a27-a065-5ff7ca43ba53" xlink:to="loc_us-gaap_Goodwill_0dd12617-fdf9-4822-a57c-80b751ed74d4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_8b05084b-3768-4db9-b07a-f08131a57a66" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NumberOfReportableSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationAdditionalInformationAbstract_49374639-97c6-4a27-a065-5ff7ca43ba53" xlink:to="loc_us-gaap_NumberOfReportableSegments_8b05084b-3768-4db9-b07a-f08131a57a66" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfOperatingSegments_c62dbb67-9379-4ce0-bde8-62604ed58ac3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NumberOfOperatingSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationAdditionalInformationAbstract_49374639-97c6-4a27-a065-5ff7ca43ba53" xlink:to="loc_us-gaap_NumberOfOperatingSegments_c62dbb67-9379-4ce0-bde8-62604ed58ac3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentExpenditureAdditionToLongLivedAssets_e7457991-902a-456b-af61-ef4cc9a8ff5f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentExpenditureAdditionToLongLivedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2e59dc87-d0f6-42bf-9225-0ebb502cc7a1" xlink:to="loc_us-gaap_SegmentExpenditureAdditionToLongLivedAssets_e7457991-902a-456b-af61-ef4cc9a8ff5f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentForAmortization_e9d7b7f5-1288-4dde-8c15-322925fc495a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdjustmentForAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2e59dc87-d0f6-42bf-9225-0ebb502cc7a1" xlink:to="loc_us-gaap_AdjustmentForAmortization_e9d7b7f5-1288-4dde-8c15-322925fc495a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_ec95db3e-3778-438f-b055-9f268f08e28f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2e59dc87-d0f6-42bf-9225-0ebb502cc7a1" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_ec95db3e-3778-438f-b055-9f268f08e28f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeOther_ceebd4e6-7ed3-48f3-b25b-f900b7b5bd64" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2e59dc87-d0f6-42bf-9225-0ebb502cc7a1" xlink:to="loc_us-gaap_InterestIncomeOther_ceebd4e6-7ed3-48f3-b25b-f900b7b5bd64" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/RevenuefromContractswithCustomersDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#RevenuefromContractswithCustomersDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/RevenuefromContractswithCustomersDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RevenuefromcontractswithcustomersLineItems_49b09f50-c67f-4e1a-8af4-3d2792476a57" xlink:href="ppl-20250630.xsd#ppl_RevenuefromcontractswithcustomersLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RevenuefromcontractswithcustomersTable_79932406-c5e7-4fe0-8761-d6528da8c6de" xlink:href="ppl-20250630.xsd#ppl_RevenuefromcontractswithcustomersTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_RevenuefromcontractswithcustomersLineItems_49b09f50-c67f-4e1a-8af4-3d2792476a57" xlink:to="loc_ppl_RevenuefromcontractswithcustomersTable_79932406-c5e7-4fe0-8761-d6528da8c6de" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_e4b4a4c5-1f2e-41dc-8790-67176b15f9c9" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RevenuefromcontractswithcustomersTable_79932406-c5e7-4fe0-8761-d6528da8c6de" xlink:to="loc_dei_LegalEntityAxis_e4b4a4c5-1f2e-41dc-8790-67176b15f9c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e4b4a4c5-1f2e-41dc-8790-67176b15f9c9_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_e4b4a4c5-1f2e-41dc-8790-67176b15f9c9" xlink:to="loc_dei_EntityDomain_e4b4a4c5-1f2e-41dc-8790-67176b15f9c9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_cb1ed1d7-b245-4556-bb5c-cf5587fa0d52" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_e4b4a4c5-1f2e-41dc-8790-67176b15f9c9" xlink:to="loc_dei_EntityDomain_cb1ed1d7-b245-4556-bb5c-cf5587fa0d52" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_693d5a69-37d9-4310-98fc-0217f4fb075c" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_cb1ed1d7-b245-4556-bb5c-cf5587fa0d52" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_693d5a69-37d9-4310-98fc-0217f4fb075c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_ec6244b7-6b2f-43f0-8a7b-f0f4cbd1194c" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_cb1ed1d7-b245-4556-bb5c-cf5587fa0d52" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_ec6244b7-6b2f-43f0-8a7b-f0f4cbd1194c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_33b1b32a-d39d-43a9-84ff-fbcbaa59265f" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_cb1ed1d7-b245-4556-bb5c-cf5587fa0d52" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_33b1b32a-d39d-43a9-84ff-fbcbaa59265f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PennsylvaniaRegulatedMember_6b1dbb28-a080-4c63-ac87-24855ebf5218" xlink:href="ppl-20250630.xsd#ppl_PennsylvaniaRegulatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_cb1ed1d7-b245-4556-bb5c-cf5587fa0d52" xlink:to="loc_ppl_PennsylvaniaRegulatedMember_6b1dbb28-a080-4c63-ac87-24855ebf5218" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyRegulatedMember_bbfb5104-4866-441a-a7ea-d5a452da140f" xlink:href="ppl-20250630.xsd#ppl_KentuckyRegulatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_cb1ed1d7-b245-4556-bb5c-cf5587fa0d52" xlink:to="loc_ppl_KentuckyRegulatedMember_bbfb5104-4866-441a-a7ea-d5a452da140f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_96735b61-14fa-4f80-ad83-5def161d6855" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RevenuefromcontractswithcustomersTable_79932406-c5e7-4fe0-8761-d6528da8c6de" xlink:to="loc_ppl_ByCompanyAxis_96735b61-14fa-4f80-ad83-5def161d6855" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_96735b61-14fa-4f80-ad83-5def161d6855_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_96735b61-14fa-4f80-ad83-5def161d6855" xlink:to="loc_ppl_ByCompanyDomain_96735b61-14fa-4f80-ad83-5def161d6855_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_1cc7d416-9782-4e0e-9919-53f664fc5cae" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_96735b61-14fa-4f80-ad83-5def161d6855" xlink:to="loc_ppl_ByCompanyDomain_1cc7d416-9782-4e0e-9919-53f664fc5cae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorporationMember_d299d218-4b1f-47fd-bbc2-5304c66c1ea6" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_1cc7d416-9782-4e0e-9919-53f664fc5cae" xlink:to="loc_ppl_PplElectricUtilitiesCorporationMember_d299d218-4b1f-47fd-bbc2-5304c66c1ea6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_2decd28a-e133-49e7-a522-8580cc2adf55" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_1cc7d416-9782-4e0e-9919-53f664fc5cae" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_2decd28a-e133-49e7-a522-8580cc2adf55" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCompanyMember_e9dbfe2b-b715-4560-8856-8852cd29f43f" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_1cc7d416-9782-4e0e-9919-53f664fc5cae" xlink:to="loc_ppl_KentuckyUtilitiesCompanyMember_e9dbfe2b-b715-4560-8856-8852cd29f43f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandEnergyMember_0a82eaf5-0a65-416b-9817-bdb2c11c8f1d" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandEnergyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_1cc7d416-9782-4e0e-9919-53f664fc5cae" xlink:to="loc_ppl_RhodeIslandEnergyMember_0a82eaf5-0a65-416b-9817-bdb2c11c8f1d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_d7cb8317-3dc7-4c97-91e4-d29578fa861c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RevenuefromcontractswithcustomersTable_79932406-c5e7-4fe0-8761-d6528da8c6de" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_d7cb8317-3dc7-4c97-91e4-d29578fa861c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_d7cb8317-3dc7-4c97-91e4-d29578fa861c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_d7cb8317-3dc7-4c97-91e4-d29578fa861c" xlink:to="loc_us-gaap_SegmentDomain_d7cb8317-3dc7-4c97-91e4-d29578fa861c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_afd4ce06-e58f-4dae-bb84-9e655378636f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_d7cb8317-3dc7-4c97-91e4-d29578fa861c" xlink:to="loc_us-gaap_SegmentDomain_afd4ce06-e58f-4dae-bb84-9e655378636f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PennsylvaniaRegulatedMember_440031d5-3338-4404-95fd-7e8e4fde1d81" xlink:href="ppl-20250630.xsd#ppl_PennsylvaniaRegulatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_afd4ce06-e58f-4dae-bb84-9e655378636f" xlink:to="loc_ppl_PennsylvaniaRegulatedMember_440031d5-3338-4404-95fd-7e8e4fde1d81" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyRegulatedMember_55620c4e-93ef-4731-84ec-888fa12553e4" xlink:href="ppl-20250630.xsd#ppl_KentuckyRegulatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_afd4ce06-e58f-4dae-bb84-9e655378636f" xlink:to="loc_ppl_KentuckyRegulatedMember_55620c4e-93ef-4731-84ec-888fa12553e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateMember_ac883933-38d2-4f74-acb5-cad610f80bdd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_afd4ce06-e58f-4dae-bb84-9e655378636f" xlink:to="loc_us-gaap_CorporateMember_ac883933-38d2-4f74-acb5-cad610f80bdd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandRegulatedMember_098de885-3672-493f-a526-d33dbe6056bc" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandRegulatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_afd4ce06-e58f-4dae-bb84-9e655378636f" xlink:to="loc_ppl_RhodeIslandRegulatedMember_098de885-3672-493f-a526-d33dbe6056bc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_2a7ca244-763c-484d-b518-67a828cd1a26" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MajorCustomersAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RevenuefromcontractswithcustomersTable_79932406-c5e7-4fe0-8761-d6528da8c6de" xlink:to="loc_srt_MajorCustomersAxis_2a7ca244-763c-484d-b518-67a828cd1a26" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_2a7ca244-763c-484d-b518-67a828cd1a26_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_2a7ca244-763c-484d-b518-67a828cd1a26" xlink:to="loc_srt_NameOfMajorCustomerDomain_2a7ca244-763c-484d-b518-67a828cd1a26_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_9c1cd921-5ccc-464b-bcd1-4bb9ee6e9675" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_2a7ca244-763c-484d-b518-67a828cd1a26" xlink:to="loc_srt_NameOfMajorCustomerDomain_9c1cd921-5ccc-464b-bcd1-4bb9ee6e9675" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LicensedenergysupplierMember_9b908193-2449-401a-88ad-6dfa1b82c830" xlink:href="ppl-20250630.xsd#ppl_LicensedenergysupplierMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_9c1cd921-5ccc-464b-bcd1-4bb9ee6e9675" xlink:to="loc_ppl_LicensedenergysupplierMember_9b908193-2449-401a-88ad-6dfa1b82c830" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ResidentialMember_dab9dab0-190e-467e-bd51-73b83d51611e" xlink:href="ppl-20250630.xsd#ppl_ResidentialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_9c1cd921-5ccc-464b-bcd1-4bb9ee6e9675" xlink:to="loc_ppl_ResidentialMember_dab9dab0-190e-467e-bd51-73b83d51611e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CommercialMember_7c5c6579-de62-4ba5-9f24-2a7d15255f7c" xlink:href="ppl-20250630.xsd#ppl_CommercialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_9c1cd921-5ccc-464b-bcd1-4bb9ee6e9675" xlink:to="loc_ppl_CommercialMember_7c5c6579-de62-4ba5-9f24-2a7d15255f7c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IndustrialMember_5e535483-72c4-444a-9713-d583bde93bc4" xlink:href="ppl-20250630.xsd#ppl_IndustrialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_9c1cd921-5ccc-464b-bcd1-4bb9ee6e9675" xlink:to="loc_ppl_IndustrialMember_5e535483-72c4-444a-9713-d583bde93bc4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherMember_c0e07796-a28f-4fd2-9069-125b70d57596" xlink:href="ppl-20250630.xsd#ppl_OtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_9c1cd921-5ccc-464b-bcd1-4bb9ee6e9675" xlink:to="loc_ppl_OtherMember_c0e07796-a28f-4fd2-9069-125b70d57596" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_WholesaleMunicipalMember_4ff69c9a-faa8-4251-9831-354ded00d775" xlink:href="ppl-20250630.xsd#ppl_WholesaleMunicipalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_9c1cd921-5ccc-464b-bcd1-4bb9ee6e9675" xlink:to="loc_ppl_WholesaleMunicipalMember_4ff69c9a-faa8-4251-9831-354ded00d775" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_WholesaleOtherMember_24f53bff-9ca0-4270-b9fe-33ff8a32e12b" xlink:href="ppl-20250630.xsd#ppl_WholesaleOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_9c1cd921-5ccc-464b-bcd1-4bb9ee6e9675" xlink:to="loc_ppl_WholesaleOtherMember_24f53bff-9ca0-4270-b9fe-33ff8a32e12b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DistributionMember_9b8c4720-632a-479f-af56-c8c1fa4b0959" xlink:href="ppl-20250630.xsd#ppl_DistributionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_9c1cd921-5ccc-464b-bcd1-4bb9ee6e9675" xlink:to="loc_ppl_DistributionMember_9b8c4720-632a-479f-af56-c8c1fa4b0959" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TransmissionMember_9f6c6041-432c-4298-a586-3755120386b4" xlink:href="ppl-20250630.xsd#ppl_TransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_9c1cd921-5ccc-464b-bcd1-4bb9ee6e9675" xlink:to="loc_ppl_TransmissionMember_9f6c6041-432c-4298-a586-3755120386b4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationTypeAxis_5d5a3e41-9d45-4972-a64f-c5a474fcffce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RevenuefromcontractswithcustomersTable_79932406-c5e7-4fe0-8761-d6528da8c6de" xlink:to="loc_us-gaap_ReclassificationTypeAxis_5d5a3e41-9d45-4972-a64f-c5a474fcffce" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationTypeDomain_5d5a3e41-9d45-4972-a64f-c5a474fcffce_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReclassificationTypeAxis_5d5a3e41-9d45-4972-a64f-c5a474fcffce" xlink:to="loc_us-gaap_ReclassificationTypeDomain_5d5a3e41-9d45-4972-a64f-c5a474fcffce_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationTypeDomain_e556172b-3c5c-4a0b-a13e-94150cfc25b9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReclassificationTypeAxis_5d5a3e41-9d45-4972-a64f-c5a474fcffce" xlink:to="loc_us-gaap_ReclassificationTypeDomain_e556172b-3c5c-4a0b-a13e-94150cfc25b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOtherMember_4c27ca68-ca67-4cb9-92fd-dd563c67aa34" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationTypeDomain_e556172b-3c5c-4a0b-a13e-94150cfc25b9" xlink:to="loc_us-gaap_ReclassificationOtherMember_4c27ca68-ca67-4cb9-92fd-dd563c67aa34" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransactionTypeAxis_1bef65b5-13f0-4c85-9cd3-a0bab2fcdb26" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransactionTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RevenuefromcontractswithcustomersTable_79932406-c5e7-4fe0-8761-d6528da8c6de" xlink:to="loc_us-gaap_TransactionTypeAxis_1bef65b5-13f0-4c85-9cd3-a0bab2fcdb26" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransactionDomain_1bef65b5-13f0-4c85-9cd3-a0bab2fcdb26_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TransactionTypeAxis_1bef65b5-13f0-4c85-9cd3-a0bab2fcdb26" xlink:to="loc_us-gaap_TransactionDomain_1bef65b5-13f0-4c85-9cd3-a0bab2fcdb26_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransactionDomain_4898077b-ea01-47bc-9151-f3e053ad3a1e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TransactionTypeAxis_1bef65b5-13f0-4c85-9cd3-a0bab2fcdb26" xlink:to="loc_us-gaap_TransactionDomain_4898077b-ea01-47bc-9151-f3e053ad3a1e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NetMeteringMember_41d847d0-16e4-44eb-a1fe-0d773a4538b1" xlink:href="ppl-20250630.xsd#ppl_NetMeteringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransactionDomain_4898077b-ea01-47bc-9151-f3e053ad3a1e" xlink:to="loc_ppl_NetMeteringMember_41d847d0-16e4-44eb-a1fe-0d773a4538b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReconciliationofrevenuefromcontactswithcustomersAbstract_b2a01f32-b65c-4276-a51b-c5bccb3c869e" xlink:href="ppl-20250630.xsd#ppl_ReconciliationofrevenuefromcontactswithcustomersAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RevenuefromcontractswithcustomersLineItems_49b09f50-c67f-4e1a-8af4-3d2792476a57" xlink:to="loc_ppl_ReconciliationofrevenuefromcontactswithcustomersAbstract_b2a01f32-b65c-4276-a51b-c5bccb3c869e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_f9371388-7c28-4f07-9e0b-7bae0ace50a8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ReconciliationofrevenuefromcontactswithcustomersAbstract_b2a01f32-b65c-4276-a51b-c5bccb3c869e" xlink:to="loc_us-gaap_Revenues_f9371388-7c28-4f07-9e0b-7bae0ace50a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AlternativeRevenuePrograms_25abf4b4-b14a-47ac-bc35-7d4cd6b0d6ae" xlink:href="ppl-20250630.xsd#ppl_AlternativeRevenuePrograms"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ReconciliationofrevenuefromcontactswithcustomersAbstract_b2a01f32-b65c-4276-a51b-c5bccb3c869e" xlink:to="loc_ppl_AlternativeRevenuePrograms_25abf4b4-b14a-47ac-bc35-7d4cd6b0d6ae" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherRevenue_8bbabec9-207e-486e-884f-87a71a5e6afe" xlink:href="ppl-20250630.xsd#ppl_OtherRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ReconciliationofrevenuefromcontactswithcustomersAbstract_b2a01f32-b65c-4276-a51b-c5bccb3c869e" xlink:to="loc_ppl_OtherRevenue_8bbabec9-207e-486e-884f-87a71a5e6afe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueAbstract_563f6b7c-ecf7-44dc-b8eb-fbfc986bccc4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RevenuefromcontractswithcustomersLineItems_49b09f50-c67f-4e1a-8af4-3d2792476a57" xlink:to="loc_us-gaap_DisaggregationOfRevenueAbstract_563f6b7c-ecf7-44dc-b8eb-fbfc986bccc4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_d6885352-8efd-4fc0-bb4f-4d2521598859" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueAbstract_563f6b7c-ecf7-44dc-b8eb-fbfc986bccc4" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_d6885352-8efd-4fc0-bb4f-4d2521598859" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_838f3344-dde0-4298-9544-4fb799915300" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerAssetAndLiabilityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RevenuefromcontractswithcustomersLineItems_49b09f50-c67f-4e1a-8af4-3d2792476a57" xlink:to="loc_us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_838f3344-dde0-4298-9544-4fb799915300" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_baca639a-a1bb-42c3-aeb3-c73102a08875" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_838f3344-dde0-4298-9544-4fb799915300" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_baca639a-a1bb-42c3-aeb3-c73102a08875" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_6c3c9364-c95a-4446-90c9-468678997d34" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_838f3344-dde0-4298-9544-4fb799915300" xlink:to="loc_us-gaap_ContractWithCustomerLiability_6c3c9364-c95a-4446-90c9-468678997d34" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_d118b21d-de20-4b7c-ac00-f9da9fe41a5e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_838f3344-dde0-4298-9544-4fb799915300" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_d118b21d-de20-4b7c-ac00-f9da9fe41a5e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RevenueReserveForROEChallenge_d503159e-48dd-49a1-9442-7c3ee564bcd7" xlink:href="ppl-20250630.xsd#ppl_RevenueReserveForROEChallenge"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RevenuefromcontractswithcustomersLineItems_49b09f50-c67f-4e1a-8af4-3d2792476a57" xlink:to="loc_ppl_RevenueReserveForROEChallenge_d503159e-48dd-49a1-9442-7c3ee564bcd7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AmortizationOfRevenueReserveForROEChallenge_548717f1-dea0-48d1-89a0-3df75156484c" xlink:href="ppl-20250630.xsd#ppl_AmortizationOfRevenueReserveForROEChallenge"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RevenuefromcontractswithcustomersLineItems_49b09f50-c67f-4e1a-8af4-3d2792476a57" xlink:to="loc_ppl_AmortizationOfRevenueReserveForROEChallenge_548717f1-dea0-48d1-89a0-3df75156484c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccountsReceivableForgivenARReserve_2eebd18d-f2eb-4c65-b40b-428f9262b2be" xlink:href="ppl-20250630.xsd#ppl_AccountsReceivableForgivenARReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RevenuefromcontractswithcustomersLineItems_49b09f50-c67f-4e1a-8af4-3d2792476a57" xlink:to="loc_ppl_AccountsReceivableForgivenARReserve_2eebd18d-f2eb-4c65-b40b-428f9262b2be" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PurchasedPowerAndGas_e48ca69a-9f12-4464-8c2d-acc0d3ae6cac" xlink:href="ppl-20250630.xsd#ppl_PurchasedPowerAndGas"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RevenuefromcontractswithcustomersLineItems_49b09f50-c67f-4e1a-8af4-3d2792476a57" xlink:to="loc_ppl_PurchasedPowerAndGas_e48ca69a-9f12-4464-8c2d-acc0d3ae6cac" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_b581fbc6-d401-464b-8f09-52d86ff041f8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_33169576-607b-4fab-9f9f-9e3cc2505022" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_b581fbc6-d401-464b-8f09-52d86ff041f8" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_33169576-607b-4fab-9f9f-9e3cc2505022" xlink:type="arc" order="2" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_6b95cf3f-7ae2-45a0-8a1b-d6d1e6bc3e35" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_33169576-607b-4fab-9f9f-9e3cc2505022" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_6b95cf3f-7ae2-45a0-8a1b-d6d1e6bc3e35" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_6b95cf3f-7ae2-45a0-8a1b-d6d1e6bc3e35_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_e4d31cd9-8c34-4173-9a81-a210f5e6639e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateMember_0d48d1dc-5801-42fd-8b50-17617c7533cc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_61c26799-c274-4e16-9106-623d01bb9ef5" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_33169576-607b-4fab-9f9f-9e3cc2505022" xlink:to="loc_srt_StatementScenarioAxis_61c26799-c274-4e16-9106-623d01bb9ef5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_61c26799-c274-4e16-9106-623d01bb9ef5_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_61c26799-c274-4e16-9106-623d01bb9ef5" xlink:to="loc_srt_ScenarioUnspecifiedDomain_61c26799-c274-4e16-9106-623d01bb9ef5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_3497d152-7dc7-48a7-a4aa-dbf00ba1f43c" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_61c26799-c274-4e16-9106-623d01bb9ef5" xlink:to="loc_srt_ScenarioUnspecifiedDomain_3497d152-7dc7-48a7-a4aa-dbf00ba1f43c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_c5e7a4cf-048c-4ec3-9f3c-5b5e877111d1" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_3497d152-7dc7-48a7-a4aa-dbf00ba1f43c" xlink:to="loc_srt_ScenarioForecastMember_c5e7a4cf-048c-4ec3-9f3c-5b5e877111d1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_213a4628-2267-4a40-ab88-fcb2acdebeeb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_33169576-607b-4fab-9f9f-9e3cc2505022" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_213a4628-2267-4a40-ab88-fcb2acdebeeb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_ea9fbe57-cb46-424c-9128-7f46d30fed94" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_b581fbc6-d401-464b-8f09-52d86ff041f8" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_ea9fbe57-cb46-424c-9128-7f46d30fed94" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_c5e921c3-0437-47b6-884c-8cdd75fae653" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_b581fbc6-d401-464b-8f09-52d86ff041f8" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_c5e921c3-0437-47b6-884c-8cdd75fae653" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/RevenuefromContractswithCustomersDetails_1" xlink:type="simple" xlink:href="ppl-20250630.xsd#RevenuefromContractswithCustomersDetails_1"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/RevenuefromContractswithCustomersDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_b581fbc6-d401-464b-8f09-52d86ff041f8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_33169576-607b-4fab-9f9f-9e3cc2505022" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_b581fbc6-d401-464b-8f09-52d86ff041f8" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_33169576-607b-4fab-9f9f-9e3cc2505022" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_6b95cf3f-7ae2-45a0-8a1b-d6d1e6bc3e35" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_33169576-607b-4fab-9f9f-9e3cc2505022" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_6b95cf3f-7ae2-45a0-8a1b-d6d1e6bc3e35" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_6b95cf3f-7ae2-45a0-8a1b-d6d1e6bc3e35_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_6b95cf3f-7ae2-45a0-8a1b-d6d1e6bc3e35" xlink:to="loc_us-gaap_SegmentDomain_6b95cf3f-7ae2-45a0-8a1b-d6d1e6bc3e35_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_e4d31cd9-8c34-4173-9a81-a210f5e6639e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_6b95cf3f-7ae2-45a0-8a1b-d6d1e6bc3e35" xlink:to="loc_us-gaap_SegmentDomain_e4d31cd9-8c34-4173-9a81-a210f5e6639e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateMember_0d48d1dc-5801-42fd-8b50-17617c7533cc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_e4d31cd9-8c34-4173-9a81-a210f5e6639e" xlink:to="loc_us-gaap_CorporateMember_0d48d1dc-5801-42fd-8b50-17617c7533cc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_61c26799-c274-4e16-9106-623d01bb9ef5" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_33169576-607b-4fab-9f9f-9e3cc2505022" xlink:to="loc_srt_StatementScenarioAxis_61c26799-c274-4e16-9106-623d01bb9ef5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_61c26799-c274-4e16-9106-623d01bb9ef5_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_61c26799-c274-4e16-9106-623d01bb9ef5" xlink:to="loc_srt_ScenarioUnspecifiedDomain_61c26799-c274-4e16-9106-623d01bb9ef5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_3497d152-7dc7-48a7-a4aa-dbf00ba1f43c" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_61c26799-c274-4e16-9106-623d01bb9ef5" xlink:to="loc_srt_ScenarioUnspecifiedDomain_3497d152-7dc7-48a7-a4aa-dbf00ba1f43c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_c5e7a4cf-048c-4ec3-9f3c-5b5e877111d1" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_3497d152-7dc7-48a7-a4aa-dbf00ba1f43c" xlink:to="loc_srt_ScenarioForecastMember_c5e7a4cf-048c-4ec3-9f3c-5b5e877111d1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_ea9fbe57-cb46-424c-9128-7f46d30fed94" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_b581fbc6-d401-464b-8f09-52d86ff041f8" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_ea9fbe57-cb46-424c-9128-7f46d30fed94" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_c5e921c3-0437-47b6-884c-8cdd75fae653" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_b581fbc6-d401-464b-8f09-52d86ff041f8" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_c5e921c3-0437-47b6-884c-8cdd75fae653" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/EarningsPerShareDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#EarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/EarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_e833a672-f426-46eb-81f9-316ee1a55130" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_187bdfeb-5bc9-42c4-bb5d-1764e32cdd0d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_e833a672-f426-46eb-81f9-316ee1a55130" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_187bdfeb-5bc9-42c4-bb5d-1764e32cdd0d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_bbe370d1-e0fe-4809-8edd-491f0fa81d1d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_187bdfeb-5bc9-42c4-bb5d-1764e32cdd0d" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_bbe370d1-e0fe-4809-8edd-491f0fa81d1d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_bbe370d1-e0fe-4809-8edd-491f0fa81d1d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_bbe370d1-e0fe-4809-8edd-491f0fa81d1d" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_bbe370d1-e0fe-4809-8edd-491f0fa81d1d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_850d48c4-c387-41dc-95c8-f99b2994234b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_bbe370d1-e0fe-4809-8edd-491f0fa81d1d" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_850d48c4-c387-41dc-95c8-f99b2994234b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_42b4068a-d4c3-4345-bae2-4f6fc8adb6e2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_850d48c4-c387-41dc-95c8-f99b2994234b" xlink:to="loc_us-gaap_EmployeeStockOptionMember_42b4068a-d4c3-4345-bae2-4f6fc8adb6e2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_78bfae8d-6aac-4a47-b385-7797a4e1fa33" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_e833a672-f426-46eb-81f9-316ee1a55130" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_78bfae8d-6aac-4a47-b385-7797a4e1fa33" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ForwardSaleAgreementsShares_9b18abcc-258c-4259-adb0-ac8552d41874" xlink:href="ppl-20250630.xsd#ppl_ForwardSaleAgreementsShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_e833a672-f426-46eb-81f9-316ee1a55130" xlink:to="loc_ppl_ForwardSaleAgreementsShares_9b18abcc-258c-4259-adb0-ac8552d41874" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/IncomeTaxesDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#IncomeTaxesDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/IncomeTaxesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IncomeTaxesLineItems_c0acc56d-b28c-4dac-8025-30430a670307" xlink:href="ppl-20250630.xsd#ppl_IncomeTaxesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IncomeTaxesTable_3ac3c152-9dfa-4478-baf0-6007e3bfd7e2" xlink:href="ppl-20250630.xsd#ppl_IncomeTaxesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_IncomeTaxesLineItems_c0acc56d-b28c-4dac-8025-30430a670307" xlink:to="loc_ppl_IncomeTaxesTable_3ac3c152-9dfa-4478-baf0-6007e3bfd7e2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_064ea747-bfb7-477c-98f6-5e7e8d27296e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_IncomeTaxesTable_3ac3c152-9dfa-4478-baf0-6007e3bfd7e2" xlink:to="loc_dei_LegalEntityAxis_064ea747-bfb7-477c-98f6-5e7e8d27296e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_064ea747-bfb7-477c-98f6-5e7e8d27296e_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_064ea747-bfb7-477c-98f6-5e7e8d27296e" xlink:to="loc_dei_EntityDomain_064ea747-bfb7-477c-98f6-5e7e8d27296e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ff3391ab-fc0d-4074-b041-86635b5989a0" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_064ea747-bfb7-477c-98f6-5e7e8d27296e" xlink:to="loc_dei_EntityDomain_ff3391ab-fc0d-4074-b041-86635b5989a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_5744bd13-fc37-421f-8327-be938f080eb3" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ff3391ab-fc0d-4074-b041-86635b5989a0" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_5744bd13-fc37-421f-8327-be938f080eb3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_79ad603f-99b3-4324-b0bb-871602dc0a42" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ff3391ab-fc0d-4074-b041-86635b5989a0" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_79ad603f-99b3-4324-b0bb-871602dc0a42" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_a890ad22-8aba-453a-8e55-eaf86c8875ab" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ff3391ab-fc0d-4074-b041-86635b5989a0" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_a890ad22-8aba-453a-8e55-eaf86c8875ab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_fa827f70-45b7-4dd7-a7af-226762335971" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_IncomeTaxesTable_3ac3c152-9dfa-4478-baf0-6007e3bfd7e2" xlink:to="loc_ppl_ByCompanyAxis_fa827f70-45b7-4dd7-a7af-226762335971" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_fa827f70-45b7-4dd7-a7af-226762335971_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_fa827f70-45b7-4dd7-a7af-226762335971" xlink:to="loc_ppl_ByCompanyDomain_fa827f70-45b7-4dd7-a7af-226762335971_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_c88ca163-7b30-471b-a34b-7191d1f15de5" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_fa827f70-45b7-4dd7-a7af-226762335971" xlink:to="loc_ppl_ByCompanyDomain_c88ca163-7b30-471b-a34b-7191d1f15de5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_8ac094c9-96ad-438a-9be3-4925d5bce03c" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_c88ca163-7b30-471b-a34b-7191d1f15de5" xlink:to="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_8ac094c9-96ad-438a-9be3-4925d5bce03c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_54d6af2b-8566-49f1-80bc-eec75bbb438f" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_c88ca163-7b30-471b-a34b-7191d1f15de5" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_54d6af2b-8566-49f1-80bc-eec75bbb438f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCompanyMember_29d92e46-4f9c-4613-b8d3-41b8f559bbd2" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_c88ca163-7b30-471b-a34b-7191d1f15de5" xlink:to="loc_ppl_KentuckyUtilitiesCompanyMember_29d92e46-4f9c-4613-b8d3-41b8f559bbd2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorporationMember_f0fc4216-42cd-4a3c-9193-7d1a829b5351" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_c88ca163-7b30-471b-a34b-7191d1f15de5" xlink:to="loc_ppl_PplElectricUtilitiesCorporationMember_f0fc4216-42cd-4a3c-9193-7d1a829b5351" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CauseOfValuationAllowanceAxis_01c01e9f-73bf-45cb-a261-4d96056e7203" xlink:href="ppl-20250630.xsd#ppl_CauseOfValuationAllowanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_IncomeTaxesTable_3ac3c152-9dfa-4478-baf0-6007e3bfd7e2" xlink:to="loc_ppl_CauseOfValuationAllowanceAxis_01c01e9f-73bf-45cb-a261-4d96056e7203" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CauseOfValuationAllowanceDomain_01c01e9f-73bf-45cb-a261-4d96056e7203_default" xlink:href="ppl-20250630.xsd#ppl_CauseOfValuationAllowanceDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_CauseOfValuationAllowanceAxis_01c01e9f-73bf-45cb-a261-4d96056e7203" xlink:to="loc_ppl_CauseOfValuationAllowanceDomain_01c01e9f-73bf-45cb-a261-4d96056e7203_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CauseOfValuationAllowanceDomain_3e958c5f-ff31-4581-bbcf-bbdb4abe8d43" xlink:href="ppl-20250630.xsd#ppl_CauseOfValuationAllowanceDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_CauseOfValuationAllowanceAxis_01c01e9f-73bf-45cb-a261-4d96056e7203" xlink:to="loc_ppl_CauseOfValuationAllowanceDomain_3e958c5f-ff31-4581-bbcf-bbdb4abe8d43" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_2c5f2359-de30-4696-b8ff-23f7a6d96cd9" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_IncomeTaxesTable_3ac3c152-9dfa-4478-baf0-6007e3bfd7e2" xlink:to="loc_srt_RangeAxis_2c5f2359-de30-4696-b8ff-23f7a6d96cd9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_2c5f2359-de30-4696-b8ff-23f7a6d96cd9_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_2c5f2359-de30-4696-b8ff-23f7a6d96cd9" xlink:to="loc_srt_RangeMember_2c5f2359-de30-4696-b8ff-23f7a6d96cd9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_35470fe1-d24e-4655-ba77-1e8c5f2307e1" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_2c5f2359-de30-4696-b8ff-23f7a6d96cd9" xlink:to="loc_srt_RangeMember_35470fe1-d24e-4655-ba77-1e8c5f2307e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_9361c9c8-e825-44c9-b617-6d89cea87ee0" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_35470fe1-d24e-4655-ba77-1e8c5f2307e1" xlink:to="loc_srt_MinimumMember_9361c9c8-e825-44c9-b617-6d89cea87ee0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_e5f38d9a-aa67-4bbd-8d85-9b6ee00e390f" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_35470fe1-d24e-4655-ba77-1e8c5f2307e1" xlink:to="loc_srt_MaximumMember_e5f38d9a-aa67-4bbd-8d85-9b6ee00e390f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_8416ffcf-a63d-4604-b92e-12f9b3c5abb5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_IncomeTaxesTable_3ac3c152-9dfa-4478-baf0-6007e3bfd7e2" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_8416ffcf-a63d-4604-b92e-12f9b3c5abb5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_8416ffcf-a63d-4604-b92e-12f9b3c5abb5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_8416ffcf-a63d-4604-b92e-12f9b3c5abb5" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_8416ffcf-a63d-4604-b92e-12f9b3c5abb5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_5a6a1e61-56e8-430c-b67e-f9dd8d9a06c3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_8416ffcf-a63d-4604-b92e-12f9b3c5abb5" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_5a6a1e61-56e8-430c-b67e-f9dd8d9a06c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticCountryMember_bfe704ba-d12d-43f2-8e04-9f346c260da7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DomesticCountryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_5a6a1e61-56e8-430c-b67e-f9dd8d9a06c3" xlink:to="loc_us-gaap_DomesticCountryMember_bfe704ba-d12d-43f2-8e04-9f346c260da7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardAxis_9bb84feb-95ea-4b59-a6c4-0998bc929668" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TaxCreditCarryforwardAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_IncomeTaxesTable_3ac3c152-9dfa-4478-baf0-6007e3bfd7e2" xlink:to="loc_us-gaap_TaxCreditCarryforwardAxis_9bb84feb-95ea-4b59-a6c4-0998bc929668" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_9bb84feb-95ea-4b59-a6c4-0998bc929668_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_9bb84feb-95ea-4b59-a6c4-0998bc929668" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_9bb84feb-95ea-4b59-a6c4-0998bc929668_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_29d91040-e5fc-40f9-962f-c088f94a740b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_9bb84feb-95ea-4b59-a6c4-0998bc929668" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_29d91040-e5fc-40f9-962f-c088f94a740b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCreditMember_f1e6077c-d6f9-42ef-8c29-1f2a2de05660" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardNameDomain_29d91040-e5fc-40f9-962f-c088f94a740b" xlink:to="loc_us-gaap_InvestmentCreditMember_f1e6077c-d6f9-42ef-8c29-1f2a2de05660" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_b2afc756-58fd-4d68-8e23-1bbe7a2f496b" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_IncomeTaxesTable_3ac3c152-9dfa-4478-baf0-6007e3bfd7e2" xlink:to="loc_srt_StatementScenarioAxis_b2afc756-58fd-4d68-8e23-1bbe7a2f496b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_b2afc756-58fd-4d68-8e23-1bbe7a2f496b_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_b2afc756-58fd-4d68-8e23-1bbe7a2f496b" xlink:to="loc_srt_ScenarioUnspecifiedDomain_b2afc756-58fd-4d68-8e23-1bbe7a2f496b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_03d4f33d-0498-4e36-aa8e-b4d77b7d6573" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_b2afc756-58fd-4d68-8e23-1bbe7a2f496b" xlink:to="loc_srt_ScenarioUnspecifiedDomain_03d4f33d-0498-4e36-aa8e-b4d77b7d6573" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_eecbae01-6c4f-4b73-bdc8-365379b37eca" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_03d4f33d-0498-4e36-aa8e-b4d77b7d6573" xlink:to="loc_srt_ScenarioForecastMember_eecbae01-6c4f-4b73-bdc8-365379b37eca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionAxis_f661f5e0-03cc-4749-860b-041463d98b0f" xlink:href="ppl-20250630.xsd#ppl_ChangeInEnactedTaxRateRecognitionDescriptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_IncomeTaxesTable_3ac3c152-9dfa-4478-baf0-6007e3bfd7e2" xlink:to="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionAxis_f661f5e0-03cc-4749-860b-041463d98b0f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain_f661f5e0-03cc-4749-860b-041463d98b0f_default" xlink:href="ppl-20250630.xsd#ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionAxis_f661f5e0-03cc-4749-860b-041463d98b0f" xlink:to="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain_f661f5e0-03cc-4749-860b-041463d98b0f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain_e84f3a64-9f93-4f12-b2b4-094cd6cba9eb" xlink:href="ppl-20250630.xsd#ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionAxis_f661f5e0-03cc-4749-860b-041463d98b0f" xlink:to="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain_e84f3a64-9f93-4f12-b2b4-094cd6cba9eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatedDeferredIncomeTaxesReductionMember_2e009c95-faaf-4b43-a2a0-2fc58d421376" xlink:href="ppl-20250630.xsd#ppl_RegulatedDeferredIncomeTaxesReductionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain_e84f3a64-9f93-4f12-b2b4-094cd6cba9eb" xlink:to="loc_ppl_RegulatedDeferredIncomeTaxesReductionMember_2e009c95-faaf-4b43-a2a0-2fc58d421376" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DeferredTaxBenefitMember_b4da9b10-9fc9-4607-9059-3f641c8fc0d2" xlink:href="ppl-20250630.xsd#ppl_DeferredTaxBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain_e84f3a64-9f93-4f12-b2b4-094cd6cba9eb" xlink:to="loc_ppl_DeferredTaxBenefitMember_b4da9b10-9fc9-4607-9059-3f641c8fc0d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_9034af13-ffee-49ef-8c61-c98d97b54ff4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncomeTaxesLineItems_c0acc56d-b28c-4dac-8025-30430a670307" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_9034af13-ffee-49ef-8c61-c98d97b54ff4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_b1c2c5d8-c8ec-4c88-af6b-02ac708cb769" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_9034af13-ffee-49ef-8c61-c98d97b54ff4" xlink:to="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_b1c2c5d8-c8ec-4c88-af6b-02ac708cb769" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:href="ppl-20250630.xsd#ppl_IncreaseDecreaseDueToAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_9034af13-ffee-49ef-8c61-c98d97b54ff4" xlink:to="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_d4be028d-ae71-4954-891f-4bc1aebf0aaa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:to="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_d4be028d-ae71-4954-891f-4bc1aebf0aaa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsCapitalLossCarryforwards_f1e8b7af-d192-4cf7-a3d0-4bf4380c595f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsCapitalLossCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:to="loc_us-gaap_DeferredTaxAssetsCapitalLossCarryforwards_f1e8b7af-d192-4cf7-a3d0-4bf4380c595f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ValuationAllowanceOnCapitalLossA_bb2f1d11-d976-4d0b-83bd-56341fc71b83" xlink:href="ppl-20250630.xsd#ppl_ValuationAllowanceOnCapitalLossA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:to="loc_ppl_ValuationAllowanceOnCapitalLossA_bb2f1d11-d976-4d0b-83bd-56341fc71b83" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DepreciationNotNormalized_de79591f-3391-45db-8b2b-bab49b6a7730" xlink:href="ppl-20250630.xsd#ppl_DepreciationNotNormalized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:to="loc_ppl_DepreciationNotNormalized_de79591f-3391-45db-8b2b-bab49b6a7730" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_fedfc169-51c3-43bb-87a1-cabb4b37b403" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:to="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_fedfc169-51c3-43bb-87a1-cabb4b37b403" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxCredits_79cd5a70-75e5-4332-9081-02cd8297ea58" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationTaxCredits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxCredits_79cd5a70-75e5-4332-9081-02cd8297ea58" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AmortizationOfExcessDeferredIncomeTaxes_9aa2f65b-5331-43df-96ac-8c162362ac0d" xlink:href="ppl-20250630.xsd#ppl_AmortizationOfExcessDeferredIncomeTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:to="loc_ppl_AmortizationOfExcessDeferredIncomeTaxes_9aa2f65b-5331-43df-96ac-8c162362ac0d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EffectiveIncomeTaxRateReconciliationChangeInEnactedStateTaxRateAmount_af635ee8-9cfd-4347-9c1a-f6325087851f" xlink:href="ppl-20250630.xsd#ppl_EffectiveIncomeTaxRateReconciliationChangeInEnactedStateTaxRateAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:to="loc_ppl_EffectiveIncomeTaxRateReconciliationChangeInEnactedStateTaxRateAmount_af635ee8-9cfd-4347-9c1a-f6325087851f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes_57dbcbbe-6488-42ad-9fb8-ea4c99e3756f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:to="loc_us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes_57dbcbbe-6488-42ad-9fb8-ea4c99e3756f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpense_630f8dc3-941e-4d96-b931-cdad67b23e4f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:to="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpense_630f8dc3-941e-4d96-b931-cdad67b23e4f" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IncomeTaxReconciliationRecyclingTaxCreditNetOfFederalIncomeTaxExpense_7f1ab5a3-84c3-49c8-a205-42801cd56f0c" xlink:href="ppl-20250630.xsd#ppl_IncomeTaxReconciliationRecyclingTaxCreditNetOfFederalIncomeTaxExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:to="loc_ppl_IncomeTaxReconciliationRecyclingTaxCreditNetOfFederalIncomeTaxExpense_7f1ab5a3-84c3-49c8-a205-42801cd56f0c" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_e94b364c-4135-4343-bf24-11e9b6a0fad4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationOtherAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:to="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_e94b364c-4135-4343-bf24-11e9b6a0fad4" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TotalIncreaseDecreaseToFederalIncomeTaxOnIncomeFromContinuingOperationsAtStatutoryTaxRate_dbbe4421-dfea-4ae0-941d-743e60ccc1e5" xlink:href="ppl-20250630.xsd#ppl_TotalIncreaseDecreaseToFederalIncomeTaxOnIncomeFromContinuingOperationsAtStatutoryTaxRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:to="loc_ppl_TotalIncreaseDecreaseToFederalIncomeTaxOnIncomeFromContinuingOperationsAtStatutoryTaxRate_dbbe4421-dfea-4ae0-941d-743e60ccc1e5" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_b226a4f4-6b15-464b-adff-b0ad45426a63" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncreaseDecreaseDueToAbstract_d5831fc3-830c-4528-be90-32761ff3f242" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_b226a4f4-6b15-464b-adff-b0ad45426a63" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AmortizationOfInvestmentTaxCredit_39100e07-4b54-441d-87f3-9e3d97b60720" xlink:href="ppl-20250630.xsd#ppl_AmortizationOfInvestmentTaxCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncomeTaxesLineItems_c0acc56d-b28c-4dac-8025-30430a670307" xlink:to="loc_ppl_AmortizationOfInvestmentTaxCredit_39100e07-4b54-441d-87f3-9e3d97b60720" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_9eb261bb-d783-45be-ab9d-c87185bec03f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncomeTaxesLineItems_c0acc56d-b28c-4dac-8025-30430a670307" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_9eb261bb-d783-45be-ab9d-c87185bec03f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRateUKFinanceAct2020Amount_06e98a26-b213-4217-9e2a-9ee54edd03e4" xlink:href="ppl-20250630.xsd#ppl_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRateUKFinanceAct2020Amount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncomeTaxesLineItems_c0acc56d-b28c-4dac-8025-30430a670307" xlink:to="loc_ppl_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRateUKFinanceAct2020Amount_06e98a26-b213-4217-9e2a-9ee54edd03e4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRateUKFinanceAct2021Amount_ba382d1b-0ba3-4880-94fc-baabe879bb6d" xlink:href="ppl-20250630.xsd#ppl_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRateUKFinanceAct2021Amount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncomeTaxesLineItems_c0acc56d-b28c-4dac-8025-30430a670307" xlink:to="loc_ppl_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRateUKFinanceAct2021Amount_ba382d1b-0ba3-4880-94fc-baabe879bb6d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NetOperatingLossCarryforwardsUsedDuringThePeriod_5bbc7a8b-f358-4fe9-9dca-281beb51967f" xlink:href="ppl-20250630.xsd#ppl_NetOperatingLossCarryforwardsUsedDuringThePeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncomeTaxesLineItems_c0acc56d-b28c-4dac-8025-30430a670307" xlink:to="loc_ppl_NetOperatingLossCarryforwardsUsedDuringThePeriod_5bbc7a8b-f358-4fe9-9dca-281beb51967f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DeferredTaxAssetsOperatingLossCarryforwardsAdjustmentDomestic_eaac60a3-4031-4946-8229-9113dc1e56a3" xlink:href="ppl-20250630.xsd#ppl_DeferredTaxAssetsOperatingLossCarryforwardsAdjustmentDomestic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncomeTaxesLineItems_c0acc56d-b28c-4dac-8025-30430a670307" xlink:to="loc_ppl_DeferredTaxAssetsOperatingLossCarryforwardsAdjustmentDomestic_eaac60a3-4031-4946-8229-9113dc1e56a3" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DeferredTaxAssetsTaxCreditCarryforwardsUsedDuringThePeriod_1f045c5c-2ca3-4d24-8cbd-814f5c7b886c" xlink:href="ppl-20250630.xsd#ppl_DeferredTaxAssetsTaxCreditCarryforwardsUsedDuringThePeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncomeTaxesLineItems_c0acc56d-b28c-4dac-8025-30430a670307" xlink:to="loc_ppl_DeferredTaxAssetsTaxCreditCarryforwardsUsedDuringThePeriod_1f045c5c-2ca3-4d24-8cbd-814f5c7b886c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsDeferredIncome_ffcdba61-7fac-4723-a879-fbd4a4297f9f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsDeferredIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IncomeTaxesLineItems_c0acc56d-b28c-4dac-8025-30430a670307" xlink:to="loc_us-gaap_DeferredTaxAssetsDeferredIncome_ffcdba61-7fac-4723-a879-fbd4a4297f9f" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/IncomeTaxesTaxReformDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#IncomeTaxesTaxReformDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/IncomeTaxesTaxReformDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TaxReformLineItems_c716987f-f37f-4dcb-9ca3-b50d1a76c6a7" xlink:href="ppl-20250630.xsd#ppl_TaxReformLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TaxReformTable_a3fbe4c9-726a-4b7c-a8f4-84b9a6a83fc2" xlink:href="ppl-20250630.xsd#ppl_TaxReformTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_TaxReformLineItems_c716987f-f37f-4dcb-9ca3-b50d1a76c6a7" xlink:to="loc_ppl_TaxReformTable_a3fbe4c9-726a-4b7c-a8f4-84b9a6a83fc2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8a128fc1-74a4-4242-82a2-950c26be9879" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_TaxReformTable_a3fbe4c9-726a-4b7c-a8f4-84b9a6a83fc2" xlink:to="loc_dei_LegalEntityAxis_8a128fc1-74a4-4242-82a2-950c26be9879" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8a128fc1-74a4-4242-82a2-950c26be9879_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8a128fc1-74a4-4242-82a2-950c26be9879" xlink:to="loc_dei_EntityDomain_8a128fc1-74a4-4242-82a2-950c26be9879_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a836b10b-82f3-475c-b287-2d1b8dfdf1d2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8a128fc1-74a4-4242-82a2-950c26be9879" xlink:to="loc_dei_EntityDomain_a836b10b-82f3-475c-b287-2d1b8dfdf1d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_c074ff46-656e-4de5-a41c-af4fdb11f4cf" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a836b10b-82f3-475c-b287-2d1b8dfdf1d2" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_c074ff46-656e-4de5-a41c-af4fdb11f4cf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TaxAdjustmentTypeAxis_0d948536-3252-4495-9d33-572cce913efd" xlink:href="ppl-20250630.xsd#ppl_TaxAdjustmentTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_TaxReformTable_a3fbe4c9-726a-4b7c-a8f4-84b9a6a83fc2" xlink:to="loc_ppl_TaxAdjustmentTypeAxis_0d948536-3252-4495-9d33-572cce913efd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TaxAdjustmentTypeDomain_0d948536-3252-4495-9d33-572cce913efd_default" xlink:href="ppl-20250630.xsd#ppl_TaxAdjustmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_TaxAdjustmentTypeAxis_0d948536-3252-4495-9d33-572cce913efd" xlink:to="loc_ppl_TaxAdjustmentTypeDomain_0d948536-3252-4495-9d33-572cce913efd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TaxAdjustmentTypeDomain_e3285090-d8be-4700-a22c-6f7a3f436cd7" xlink:href="ppl-20250630.xsd#ppl_TaxAdjustmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_TaxAdjustmentTypeAxis_0d948536-3252-4495-9d33-572cce913efd" xlink:to="loc_ppl_TaxAdjustmentTypeDomain_e3285090-d8be-4700-a22c-6f7a3f436cd7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionAxis_b8f167d7-92c2-47f2-aa6b-924df3e245d0" xlink:href="ppl-20250630.xsd#ppl_ChangeInEnactedTaxRateRecognitionDescriptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_TaxReformTable_a3fbe4c9-726a-4b7c-a8f4-84b9a6a83fc2" xlink:to="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionAxis_b8f167d7-92c2-47f2-aa6b-924df3e245d0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain_b8f167d7-92c2-47f2-aa6b-924df3e245d0_default" xlink:href="ppl-20250630.xsd#ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionAxis_b8f167d7-92c2-47f2-aa6b-924df3e245d0" xlink:to="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain_b8f167d7-92c2-47f2-aa6b-924df3e245d0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain_1385c98c-09f3-43e9-ba56-92661e8d6b49" xlink:href="ppl-20250630.xsd#ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionAxis_b8f167d7-92c2-47f2-aa6b-924df3e245d0" xlink:to="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain_1385c98c-09f3-43e9-ba56-92661e8d6b49" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatedDeferredIncomeTaxesReductionMember_dfb3620c-965e-4e06-8aac-55d92306e72c" xlink:href="ppl-20250630.xsd#ppl_RegulatedDeferredIncomeTaxesReductionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain_1385c98c-09f3-43e9-ba56-92661e8d6b49" xlink:to="loc_ppl_RegulatedDeferredIncomeTaxesReductionMember_dfb3620c-965e-4e06-8aac-55d92306e72c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DeferredTaxBenefitMember_6e3e6d59-0e48-44bc-b861-9a6b4fc826ce" xlink:href="ppl-20250630.xsd#ppl_DeferredTaxBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ChangeInEnactedTaxRateRecognitionDescriptionDomain_1385c98c-09f3-43e9-ba56-92661e8d6b49" xlink:to="loc_ppl_DeferredTaxBenefitMember_6e3e6d59-0e48-44bc-b861-9a6b4fc826ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_f6cf2d00-cd3b-415a-b2ff-0bf199696fb2" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_TaxReformTable_a3fbe4c9-726a-4b7c-a8f4-84b9a6a83fc2" xlink:to="loc_ppl_ByCompanyAxis_f6cf2d00-cd3b-415a-b2ff-0bf199696fb2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_f6cf2d00-cd3b-415a-b2ff-0bf199696fb2_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_f6cf2d00-cd3b-415a-b2ff-0bf199696fb2" xlink:to="loc_ppl_ByCompanyDomain_f6cf2d00-cd3b-415a-b2ff-0bf199696fb2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_05c0fb9b-abeb-4594-b9eb-f73af2f257ed" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_f6cf2d00-cd3b-415a-b2ff-0bf199696fb2" xlink:to="loc_ppl_ByCompanyDomain_05c0fb9b-abeb-4594-b9eb-f73af2f257ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorporationMember_22e5a24d-ff40-48c7-8547-96964cfef816" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_05c0fb9b-abeb-4594-b9eb-f73af2f257ed" xlink:to="loc_ppl_PplElectricUtilitiesCorporationMember_22e5a24d-ff40-48c7-8547-96964cfef816" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_d4892450-e703-41e3-8652-71e8073dfb12" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_TaxReformLineItems_c716987f-f37f-4dcb-9ca3-b50d1a76c6a7" xlink:to="loc_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_d4892450-e703-41e3-8652-71e8073dfb12" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/UtilityRateRegulationRegulatoryAssetsDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#UtilityRateRegulationRegulatoryAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/UtilityRateRegulationRegulatoryAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetLineItems_45e41e5b-3080-46d5-9d35-bc3029797ff2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAssetLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_f2e4334d-13b5-4c2b-aa95-715bc9e4dbf8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfRegulatoryAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RegulatoryAssetLineItems_45e41e5b-3080-46d5-9d35-bc3029797ff2" xlink:to="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_f2e4334d-13b5-4c2b-aa95-715bc9e4dbf8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8427a409-2be9-4321-bf88-579131aacc6f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_f2e4334d-13b5-4c2b-aa95-715bc9e4dbf8" xlink:to="loc_dei_LegalEntityAxis_8427a409-2be9-4321-bf88-579131aacc6f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8427a409-2be9-4321-bf88-579131aacc6f_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8427a409-2be9-4321-bf88-579131aacc6f" xlink:to="loc_dei_EntityDomain_8427a409-2be9-4321-bf88-579131aacc6f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_934f9a79-1274-4dea-a2f6-4fc066d59e8c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8427a409-2be9-4321-bf88-579131aacc6f" xlink:to="loc_dei_EntityDomain_934f9a79-1274-4dea-a2f6-4fc066d59e8c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_af2cd3d8-6614-4a9d-85df-79389e5d921a" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_934f9a79-1274-4dea-a2f6-4fc066d59e8c" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_af2cd3d8-6614-4a9d-85df-79389e5d921a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_0613739e-95a0-4764-82bf-9808d79d3202" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_934f9a79-1274-4dea-a2f6-4fc066d59e8c" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_0613739e-95a0-4764-82bf-9808d79d3202" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_111de8d2-a7ad-4bf6-842c-fa8cb51aabf6" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_934f9a79-1274-4dea-a2f6-4fc066d59e8c" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_111de8d2-a7ad-4bf6-842c-fa8cb51aabf6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetAxis_c80c19ae-b69f-433c-a25b-f0b2532471a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAssetAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_f2e4334d-13b5-4c2b-aa95-715bc9e4dbf8" xlink:to="loc_us-gaap_RegulatoryAssetAxis_c80c19ae-b69f-433c-a25b-f0b2532471a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_c80c19ae-b69f-433c-a25b-f0b2532471a2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAssetAxis_c80c19ae-b69f-433c-a25b-f0b2532471a2" xlink:to="loc_us-gaap_RegulatoryAssetDomain_c80c19ae-b69f-433c-a25b-f0b2532471a2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAssetAxis_c80c19ae-b69f-433c-a25b-f0b2532471a2" xlink:to="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PlantoutagecostsMember_27271e21-8c6d-4403-b020-ea6ba9230fc4" xlink:href="ppl-20250630.xsd#ppl_PlantoutagecostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_PlantoutagecostsMember_27271e21-8c6d-4403-b020-ea6ba9230fc4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRecoverableGasCostsMember_7026f60d-b0a0-4d51-8a29-b29715ec64c3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRecoverableGasCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_us-gaap_AssetRecoverableGasCostsMember_7026f60d-b0a0-4d51-8a29-b29715ec64c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SmartMeterRiderMember_bde294a3-021b-4520-9b7b-dcbd9847ec87" xlink:href="ppl-20250630.xsd#ppl_SmartMeterRiderMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_SmartMeterRiderMember_bde294a3-021b-4520-9b7b-dcbd9847ec87" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TransmissionFormulaRateMember_5096826b-3eae-4275-9d1b-a12f82f1bb44" xlink:href="ppl-20250630.xsd#ppl_TransmissionFormulaRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_TransmissionFormulaRateMember_5096826b-3eae-4275-9d1b-a12f82f1bb44" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TransmissionServiceChargeMember_da4cb6ae-a09e-4f46-9d79-b974f48e268d" xlink:href="ppl-20250630.xsd#ppl_TransmissionServiceChargeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_TransmissionServiceChargeMember_da4cb6ae-a09e-4f46-9d79-b974f48e268d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementPlansCostsMember_5051f1fc-89a3-4aa2-bb47-45e6bec914b1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionAndOtherPostretirementPlansCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_us-gaap_PensionAndOtherPostretirementPlansCostsMember_5051f1fc-89a3-4aa2-bb47-45e6bec914b1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StormCostsMember_21de707e-da6a-4f18-9256-12e985018ed9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StormCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_us-gaap_StormCostsMember_21de707e-da6a-4f18-9256-12e985018ed9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GenerationFormulaRateMember_c9f891d0-2852-4252-abe9-cc0a6c74c7cc" xlink:href="ppl-20250630.xsd#ppl_GenerationFormulaRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_GenerationFormulaRateMember_c9f891d0-2852-4252-abe9-cc0a6c74c7cc" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossOnReacquiredDebtMember_732adfbb-45fe-4c0f-8671-3aad06ce8906" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LossOnReacquiredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_us-gaap_LossOnReacquiredDebtMember_732adfbb-45fe-4c0f-8671-3aad06ce8906" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_7df7f1e2-1037-499f-b651-411f3504e621" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_us-gaap_InterestRateSwapMember_7df7f1e2-1037-499f-b651-411f3504e621" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TerminatedInterestRateSwapMember_eed5139e-3cd4-46ff-9ad7-37cf53f82eb9" xlink:href="ppl-20250630.xsd#ppl_TerminatedInterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_TerminatedInterestRateSwapMember_eed5139e-3cd4-46ff-9ad7-37cf53f82eb9" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RemovalCostsMember_911bd34b-1d92-4ddf-a548-4663aebee65d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RemovalCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_us-gaap_RemovalCostsMember_911bd34b-1d92-4ddf-a548-4663aebee65d" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationCostsMember_020b15ad-6905-4c2a-ad8b-be8ae2452e51" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_us-gaap_AssetRetirementObligationCostsMember_020b15ad-6905-4c2a-ad8b-be8ae2452e51" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_Act129ComplianceRiderMember_5f2e2fac-b73c-4877-ac57-25b1ca1f4321" xlink:href="ppl-20250630.xsd#ppl_Act129ComplianceRiderMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_Act129ComplianceRiderMember_5f2e2fac-b73c-4877-ac57-25b1ca1f4321" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherRegulatoryAssetsMember_1c8c3f81-a1d3-482c-98eb-d73f55a053cf" xlink:href="ppl-20250630.xsd#ppl_OtherRegulatoryAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_OtherRegulatoryAssetsMember_1c8c3f81-a1d3-482c-98eb-d73f55a053cf" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_StormDamageExpenseMember_757d60cb-10ec-425d-8c92-3bef967fa3de" xlink:href="ppl-20250630.xsd#ppl_StormDamageExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_StormDamageExpenseMember_757d60cb-10ec-425d-8c92-3bef967fa3de" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFuelCostsMember_70ab4d5e-b4b0-4d51-98d4-2642a980ee21" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredFuelCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_us-gaap_DeferredFuelCostsMember_70ab4d5e-b4b0-4d51-98d4-2642a980ee21" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandEnergyMember_f2ddc91d-18da-4c0f-9e42-c2c84748a2e8" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandEnergyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_RhodeIslandEnergyMember_f2ddc91d-18da-4c0f-9e42-c2c84748a2e8" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NetMeteringMember_2be46c6d-8e89-475f-86b1-06cee94982bb" xlink:href="ppl-20250630.xsd#ppl_NetMeteringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_NetMeteringMember_2be46c6d-8e89-475f-86b1-06cee94982bb" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RateAdjustmentMechanismMember_d030dc86-2e56-49bc-ac97-344c0dec517a" xlink:href="ppl-20250630.xsd#ppl_RateAdjustmentMechanismMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_RateAdjustmentMechanismMember_d030dc86-2e56-49bc-ac97-344c0dec517a" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EnvironmentalCostRecoveryMember_55f025d0-df49-4998-9de0-6ed02501fc4d" xlink:href="ppl-20250630.xsd#ppl_EnvironmentalCostRecoveryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_EnvironmentalCostRecoveryMember_55f025d0-df49-4998-9de0-6ed02501fc4d" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TaxesRecoverableThroughFutureRatesMember_55155b3f-19cc-451a-a2ae-191ca036b2ef" xlink:href="ppl-20250630.xsd#ppl_TaxesRecoverableThroughFutureRatesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_TaxesRecoverableThroughFutureRatesMember_55155b3f-19cc-451a-a2ae-191ca036b2ef" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RenewableEnergyProgramMember_c54235ef-f646-41aa-bd05-d0926fef0774" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RenewableEnergyProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_us-gaap_RenewableEnergyProgramMember_c54235ef-f646-41aa-bd05-d0926fef0774" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeInstrumentsMember_0d867f09-79aa-4554-b730-f4dd5c4184d4" xlink:href="ppl-20250630.xsd#ppl_DerivativeInstrumentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_DerivativeInstrumentsMember_0d867f09-79aa-4554-b730-f4dd5c4184d4" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RateClassChargeMember_6939289b-bbbf-4fd5-ab9e-8fa63759f3e0" xlink:href="ppl-20250630.xsd#ppl_RateClassChargeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_RateClassChargeMember_6939289b-bbbf-4fd5-ab9e-8fa63759f3e0" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_UniversalServiceRiderMember_368639c8-7e20-43ca-89d3-406381c3583c" xlink:href="ppl-20250630.xsd#ppl_UniversalServiceRiderMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_UniversalServiceRiderMember_368639c8-7e20-43ca-89d3-406381c3583c" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DistributionSystemImprovementChargeMember_f9fc1aba-fb27-4711-baed-a0a302bdfe47" xlink:href="ppl-20250630.xsd#ppl_DistributionSystemImprovementChargeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_DistributionSystemImprovementChargeMember_f9fc1aba-fb27-4711-baed-a0a302bdfe47" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GasLineTrackerMember_722f8ee5-836f-4aac-b365-ccb02219638b" xlink:href="ppl-20250630.xsd#ppl_GasLineTrackerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_GasLineTrackerMember_722f8ee5-836f-4aac-b365-ccb02219638b" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRegulatoryAssetsLiabilitiesMember_ae782e25-05ae-407b-b746-26aa3a52be12" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherRegulatoryAssetsLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_us-gaap_OtherRegulatoryAssetsLiabilitiesMember_ae782e25-05ae-407b-b746-26aa3a52be12" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRestorationCostsMember_abe3a29d-4974-4ab6-8604-7e5c48fef032" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnvironmentalRestorationCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_us-gaap_EnvironmentalRestorationCostsMember_abe3a29d-4974-4ab6-8604-7e5c48fef032" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRestorationCostsMember_de70e745-860d-4e67-b3c0-91eec5ce3988" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnvironmentalRestorationCostsMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TCJAOverunderCollectionMember_d5e5b22f-f125-4d3d-8e20-de7a09c75ca3" xlink:href="ppl-20250630.xsd#ppl_TCJAOverunderCollectionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_TCJAOverunderCollectionMember_d5e5b22f-f125-4d3d-8e20-de7a09c75ca3" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GasLineInspectionsMember_86f39d69-3f18-4c63-85b2-ba32cd2c2447" xlink:href="ppl-20250630.xsd#ppl_GasLineInspectionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_GasLineInspectionsMember_86f39d69-3f18-4c63-85b2-ba32cd2c2447" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AdvanceMeteringInfrastructureMember_93beb0dc-f1bf-424e-bdf1-bb180aa893a5" xlink:href="ppl-20250630.xsd#ppl_AdvanceMeteringInfrastructureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_AdvanceMeteringInfrastructureMember_93beb0dc-f1bf-424e-bdf1-bb180aa893a5" xlink:type="arc" order="33"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRegulatoryAssetsLiabilitiesMember_bc22cd96-5aaf-4445-9006-3cd9ece9637d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherRegulatoryAssetsLiabilitiesMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ISRDeferralMember_ec50ba58-ddd3-47fc-8e35-79b701963ab6" xlink:href="ppl-20250630.xsd#ppl_ISRDeferralMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_ISRDeferralMember_ec50ba58-ddd3-47fc-8e35-79b701963ab6" xlink:type="arc" order="35"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RetiredAssetRecoveryMember_37dec064-1c44-4138-a88d-3ad82526fa59" xlink:href="ppl-20250630.xsd#ppl_RetiredAssetRecoveryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_c4fde6c6-9a78-4029-a04a-03c7450d6e11" xlink:to="loc_ppl_RetiredAssetRecoveryMember_37dec064-1c44-4138-a88d-3ad82526fa59" xlink:type="arc" order="36"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityAxis_3f17ec6d-449a-446c-a965-bde29352cfe2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryLiabilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_f2e4334d-13b5-4c2b-aa95-715bc9e4dbf8" xlink:to="loc_us-gaap_RegulatoryLiabilityAxis_3f17ec6d-449a-446c-a965-bde29352cfe2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_3f17ec6d-449a-446c-a965-bde29352cfe2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryLiabilityAxis_3f17ec6d-449a-446c-a965-bde29352cfe2" xlink:to="loc_us-gaap_RegulatoryLiabilityDomain_3f17ec6d-449a-446c-a965-bde29352cfe2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_cb0ccee1-5b4f-4ef2-ab54-2e6ee4655a4d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryLiabilityAxis_3f17ec6d-449a-446c-a965-bde29352cfe2" xlink:to="loc_us-gaap_RegulatoryLiabilityDomain_cb0ccee1-5b4f-4ef2-ab54-2e6ee4655a4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_UniversalServiceRiderMember_53e7c733-8de0-4190-a091-58f9e73892c9" xlink:href="ppl-20250630.xsd#ppl_UniversalServiceRiderMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_cb0ccee1-5b4f-4ef2-ab54-2e6ee4655a4d" xlink:to="loc_ppl_UniversalServiceRiderMember_53e7c733-8de0-4190-a091-58f9e73892c9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_StormDamageExpenseMember_9b96a3f8-e247-451f-b307-4915b703dc85" xlink:href="ppl-20250630.xsd#ppl_StormDamageExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_cb0ccee1-5b4f-4ef2-ab54-2e6ee4655a4d" xlink:to="loc_ppl_StormDamageExpenseMember_9b96a3f8-e247-451f-b307-4915b703dc85" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TransmissionServiceChargeMember_4b1e5851-550e-4377-b46b-058727d12b5e" xlink:href="ppl-20250630.xsd#ppl_TransmissionServiceChargeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_cb0ccee1-5b4f-4ef2-ab54-2e6ee4655a4d" xlink:to="loc_ppl_TransmissionServiceChargeMember_4b1e5851-550e-4377-b46b-058727d12b5e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRegulatoryAssetsLiabilitiesMember_f27a5164-8d67-433b-8831-90d8ceb0bb77" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherRegulatoryAssetsLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_cb0ccee1-5b4f-4ef2-ab54-2e6ee4655a4d" xlink:to="loc_us-gaap_OtherRegulatoryAssetsLiabilitiesMember_f27a5164-8d67-433b-8831-90d8ceb0bb77" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_0353eb25-da46-4f13-99fd-f5784e424edd" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_f2e4334d-13b5-4c2b-aa95-715bc9e4dbf8" xlink:to="loc_ppl_ByCompanyAxis_0353eb25-da46-4f13-99fd-f5784e424edd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_0353eb25-da46-4f13-99fd-f5784e424edd_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_0353eb25-da46-4f13-99fd-f5784e424edd" xlink:to="loc_ppl_ByCompanyDomain_0353eb25-da46-4f13-99fd-f5784e424edd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_4503a211-b085-4270-a5f1-f91d44ce8c0b" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_0353eb25-da46-4f13-99fd-f5784e424edd" xlink:to="loc_ppl_ByCompanyDomain_4503a211-b085-4270-a5f1-f91d44ce8c0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_9dd2ac3b-e2a3-4ac2-932e-6f3f99347d7f" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_4503a211-b085-4270-a5f1-f91d44ce8c0b" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_9dd2ac3b-e2a3-4ac2-932e-6f3f99347d7f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCompanyMember_cf03eadd-58da-438c-8fb1-2641494e02fd" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_4503a211-b085-4270-a5f1-f91d44ce8c0b" xlink:to="loc_ppl_KentuckyUtilitiesCompanyMember_cf03eadd-58da-438c-8fb1-2641494e02fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyAxis_19af8286-7298-4909-bf0a-6b911ad5a89e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAgencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_f2e4334d-13b5-4c2b-aa95-715bc9e4dbf8" xlink:to="loc_us-gaap_RegulatoryAgencyAxis_19af8286-7298-4909-bf0a-6b911ad5a89e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_19af8286-7298-4909-bf0a-6b911ad5a89e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_19af8286-7298-4909-bf0a-6b911ad5a89e" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_19af8286-7298-4909-bf0a-6b911ad5a89e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_d751c54d-0725-40f4-b043-736bd40c46e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_19af8286-7298-4909-bf0a-6b911ad5a89e" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_d751c54d-0725-40f4-b043-736bd40c46e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyPublicServiceCommissionMember_c0f9a27c-5509-4631-9d48-4227cd61b33f" xlink:href="ppl-20250630.xsd#ppl_KentuckyPublicServiceCommissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_d751c54d-0725-40f4-b043-736bd40c46e6" xlink:to="loc_ppl_KentuckyPublicServiceCommissionMember_c0f9a27c-5509-4631-9d48-4227cd61b33f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetsCurrent_ce3629b3-aa19-40e7-91e5-e562d05137a6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetLineItems_45e41e5b-3080-46d5-9d35-bc3029797ff2" xlink:to="loc_us-gaap_RegulatoryAssetsCurrent_ce3629b3-aa19-40e7-91e5-e562d05137a6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetsNoncurrent_f0af800b-da6c-487f-8bb0-ee5440509053" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetLineItems_45e41e5b-3080-46d5-9d35-bc3029797ff2" xlink:to="loc_us-gaap_RegulatoryAssetsNoncurrent_f0af800b-da6c-487f-8bb0-ee5440509053" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/UtilityRateRegulationRegulatoryLiabilitiesDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#UtilityRateRegulationRegulatoryLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/UtilityRateRegulationRegulatoryLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilitiesLineItems_ef9b3861-aac0-4e0c-b98b-237256fea67f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryLiabilitiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_a866e2f2-04ba-400a-b40f-197007cbdc60" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfRegulatoryLiabilitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RegulatoryLiabilitiesLineItems_ef9b3861-aac0-4e0c-b98b-237256fea67f" xlink:to="loc_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_a866e2f2-04ba-400a-b40f-197007cbdc60" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_bbcb4254-6ad9-4cc2-ae92-7a1d846bc69b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_a866e2f2-04ba-400a-b40f-197007cbdc60" xlink:to="loc_dei_LegalEntityAxis_bbcb4254-6ad9-4cc2-ae92-7a1d846bc69b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_bbcb4254-6ad9-4cc2-ae92-7a1d846bc69b_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_bbcb4254-6ad9-4cc2-ae92-7a1d846bc69b" xlink:to="loc_dei_EntityDomain_bbcb4254-6ad9-4cc2-ae92-7a1d846bc69b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_81671c41-1042-4b91-9a51-4dd8b3f018df" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_bbcb4254-6ad9-4cc2-ae92-7a1d846bc69b" xlink:to="loc_dei_EntityDomain_81671c41-1042-4b91-9a51-4dd8b3f018df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_11196a61-10d4-40c0-835c-dd9e10f3360c" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_81671c41-1042-4b91-9a51-4dd8b3f018df" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_11196a61-10d4-40c0-835c-dd9e10f3360c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_b72cbe68-355e-4322-8d1a-5f7efefc5e05" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_81671c41-1042-4b91-9a51-4dd8b3f018df" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_b72cbe68-355e-4322-8d1a-5f7efefc5e05" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_1e934801-9d7d-4a9a-909d-04dd4c280b23" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_81671c41-1042-4b91-9a51-4dd8b3f018df" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_1e934801-9d7d-4a9a-909d-04dd4c280b23" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorporationMember_59a7960d-e9b7-4468-9dde-5c13563f24e2" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_81671c41-1042-4b91-9a51-4dd8b3f018df" xlink:to="loc_ppl_PplElectricUtilitiesCorporationMember_59a7960d-e9b7-4468-9dde-5c13563f24e2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityAxis_6661eccf-a3a8-4944-b257-763816f2e6e4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryLiabilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_a866e2f2-04ba-400a-b40f-197007cbdc60" xlink:to="loc_us-gaap_RegulatoryLiabilityAxis_6661eccf-a3a8-4944-b257-763816f2e6e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_6661eccf-a3a8-4944-b257-763816f2e6e4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryLiabilityAxis_6661eccf-a3a8-4944-b257-763816f2e6e4" xlink:to="loc_us-gaap_RegulatoryLiabilityDomain_6661eccf-a3a8-4944-b257-763816f2e6e4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryLiabilityAxis_6661eccf-a3a8-4944-b257-763816f2e6e4" xlink:to="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GenerationSupplyChargeMember_43e9c55c-5e97-4572-a4db-fbf8958047fd" xlink:href="ppl-20250630.xsd#ppl_GenerationSupplyChargeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_GenerationSupplyChargeMember_43e9c55c-5e97-4572-a4db-fbf8958047fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EnvironmentalCostRecoveryMember_cb8898d5-4922-44cb-a77d-cec68b2815a0" xlink:href="ppl-20250630.xsd#ppl_EnvironmentalCostRecoveryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_EnvironmentalCostRecoveryMember_cb8898d5-4922-44cb-a77d-cec68b2815a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_UniversalServiceRiderMember_e5f7ff06-9100-4148-a367-421561e5871d" xlink:href="ppl-20250630.xsd#ppl_UniversalServiceRiderMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_UniversalServiceRiderMember_e5f7ff06-9100-4148-a367-421561e5871d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFuelCostsMember_060e933f-d2bc-4286-9215-0d9800d6e500" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredFuelCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_us-gaap_DeferredFuelCostsMember_060e933f-d2bc-4286-9215-0d9800d6e500" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TCJAsurcreditMember_988fe7ce-5beb-4481-8a9f-7fdd7d94172a" xlink:href="ppl-20250630.xsd#ppl_TCJAsurcreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_TCJAsurcreditMember_988fe7ce-5beb-4481-8a9f-7fdd7d94172a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_StormDamageExpenseMember_f579e5b8-5aef-4586-8083-4268c257d6bd" xlink:href="ppl-20250630.xsd#ppl_StormDamageExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_StormDamageExpenseMember_f579e5b8-5aef-4586-8083-4268c257d6bd" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_Act129ComplianceRiderMember_1cdf5ec0-b4be-4a57-9484-587766314f24" xlink:href="ppl-20250630.xsd#ppl_Act129ComplianceRiderMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_Act129ComplianceRiderMember_1cdf5ec0-b4be-4a57-9484-587766314f24" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EconomicReliefBillingCreditMember_b366967e-2b76-4868-9962-6aea040f0687" xlink:href="ppl-20250630.xsd#ppl_EconomicReliefBillingCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_EconomicReliefBillingCreditMember_b366967e-2b76-4868-9962-6aea040f0687" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatoryLiabilityDueToROEReserveMember_f3aab927-7002-4c3a-9429-780564fc9e40" xlink:href="ppl-20250630.xsd#ppl_RegulatoryLiabilityDueToROEReserveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_RegulatoryLiabilityDueToROEReserveMember_f3aab927-7002-4c3a-9429-780564fc9e40" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RemovalCostsMember_cfca596f-c65e-4bfd-b3d7-ab097880d827" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RemovalCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_us-gaap_RemovalCostsMember_cfca596f-c65e-4bfd-b3d7-ab097880d827" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PowerPurchaseAgreementOhioValleyElectricCorporationMember_c718dbf6-a145-4942-958e-4449dd8d18da" xlink:href="ppl-20250630.xsd#ppl_PowerPurchaseAgreementOhioValleyElectricCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_PowerPurchaseAgreementOhioValleyElectricCorporationMember_c718dbf6-a145-4942-958e-4449dd8d18da" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NetDeferredTaxAssetsMember_666b6ca4-fe00-4565-a044-255131f41105" xlink:href="ppl-20250630.xsd#ppl_NetDeferredTaxAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_NetDeferredTaxAssetsMember_666b6ca4-fe00-4565-a044-255131f41105" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementPlansCostsMember_3f2bc9c7-cfa1-48ee-ba12-b8bcd1cfb0c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionAndOtherPostretirementPlansCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_us-gaap_PensionAndOtherPostretirementPlansCostsMember_3f2bc9c7-cfa1-48ee-ba12-b8bcd1cfb0c7" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TerminatedInterestRateSwapMember_4e6c50f8-bf3a-4e9b-8394-558100aa6782" xlink:href="ppl-20250630.xsd#ppl_TerminatedInterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_TerminatedInterestRateSwapMember_4e6c50f8-bf3a-4e9b-8394-558100aa6782" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_d9f1a0ce-8b27-4bb2-a0c3-2bcecd15bdae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_us-gaap_InterestRateSwapMember_d9f1a0ce-8b27-4bb2-a0c3-2bcecd15bdae" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherRegulatoryLiabilitiesMember_e487f88a-c7a0-438e-ace7-f00495c22b3e" xlink:href="ppl-20250630.xsd#ppl_OtherRegulatoryLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_OtherRegulatoryLiabilitiesMember_e487f88a-c7a0-438e-ace7-f00495c22b3e" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TransmissionServiceChargeMember_2890c02d-6a6c-41fd-a7fa-9a28616dcb89" xlink:href="ppl-20250630.xsd#ppl_TransmissionServiceChargeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_TransmissionServiceChargeMember_2890c02d-6a6c-41fd-a7fa-9a28616dcb89" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GasLineTrackerMember_d3bc7524-d98f-479b-a18d-5d386c7053bf" xlink:href="ppl-20250630.xsd#ppl_GasLineTrackerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_GasLineTrackerMember_d3bc7524-d98f-479b-a18d-5d386c7053bf" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandEnergyMember_eed48a9a-8194-4db8-9543-e0f2db8eb657" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandEnergyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_RhodeIslandEnergyMember_eed48a9a-8194-4db8-9543-e0f2db8eb657" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EnergyEfficiencyChargeMember_47a8aff4-2f29-476a-a729-9d97d1dddb1c" xlink:href="ppl-20250630.xsd#ppl_EnergyEfficiencyChargeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_EnergyEfficiencyChargeMember_47a8aff4-2f29-476a-a729-9d97d1dddb1c" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RateAdjustmentMechanismMember_5f5ae340-5ddf-4348-8dcc-4d2f23054785" xlink:href="ppl-20250630.xsd#ppl_RateAdjustmentMechanismMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_RateAdjustmentMechanismMember_5f5ae340-5ddf-4348-8dcc-4d2f23054785" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeInstrumentsMember_fd623f47-91c6-4d35-8154-917416749b71" xlink:href="ppl-20250630.xsd#ppl_DerivativeInstrumentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_DerivativeInstrumentsMember_fd623f47-91c6-4d35-8154-917416749b71" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TransmissionFormulaRateMember_e615ff20-87f9-4cee-b3ef-9a059c464565" xlink:href="ppl-20250630.xsd#ppl_TransmissionFormulaRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_TransmissionFormulaRateMember_e615ff20-87f9-4cee-b3ef-9a059c464565" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RIEBillCreditMember_30707dca-e77c-4a94-8584-08d5cd07aad4" xlink:href="ppl-20250630.xsd#ppl_RIEBillCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_RIEBillCreditMember_30707dca-e77c-4a94-8584-08d5cd07aad4" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRecoverableGasCostsMember_06efd8b0-3338-4948-a406-5b66efee73be" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRecoverableGasCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_us-gaap_AssetRecoverableGasCostsMember_06efd8b0-3338-4948-a406-5b66efee73be" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DemandSideManagementMember_f302ff12-4dd4-467f-b7f3-5788e6097069" xlink:href="ppl-20250630.xsd#ppl_DemandSideManagementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_DemandSideManagementMember_f302ff12-4dd4-467f-b7f3-5788e6097069" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRegulatoryAssetsLiabilitiesMember_882e033f-6473-41f5-98b3-fe218227c925" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherRegulatoryAssetsLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_us-gaap_OtherRegulatoryAssetsLiabilitiesMember_882e033f-6473-41f5-98b3-fe218227c925" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DeferredRevenueMember_0854e369-726a-4a39-9c3d-c9586b3d65f3" xlink:href="ppl-20250630.xsd#ppl_DeferredRevenueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_DeferredRevenueMember_0854e369-726a-4a39-9c3d-c9586b3d65f3" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RevenueDecouplingMechanismMember_c3fdc47f-355b-4084-81ba-104a6d65511c" xlink:href="ppl-20250630.xsd#ppl_RevenueDecouplingMechanismMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_280bbd73-b3fd-4ba5-9019-f4c9de443128" xlink:to="loc_ppl_RevenueDecouplingMechanismMember_c3fdc47f-355b-4084-81ba-104a6d65511c" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityCurrent_8308e472-87ec-4037-923c-dde976ee0531" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilitiesLineItems_ef9b3861-aac0-4e0c-b98b-237256fea67f" xlink:to="loc_us-gaap_RegulatoryLiabilityCurrent_8308e472-87ec-4037-923c-dde976ee0531" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityNoncurrent_b1b693ce-37d2-4574-91a8-141715770147" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilitiesLineItems_ef9b3861-aac0-4e0c-b98b-237256fea67f" xlink:to="loc_us-gaap_RegulatoryLiabilityNoncurrent_b1b693ce-37d2-4574-91a8-141715770147" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatoryLiabilityDueToROEReserveAfterTax_68329f9e-d88c-4f8b-a4c7-a4ba480704a1" xlink:href="ppl-20250630.xsd#ppl_RegulatoryLiabilityDueToROEReserveAfterTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilitiesLineItems_ef9b3861-aac0-4e0c-b98b-237256fea67f" xlink:to="loc_ppl_RegulatoryLiabilityDueToROEReserveAfterTax_68329f9e-d88c-4f8b-a4c7-a4ba480704a1" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/UtilityRateRegulationRegulatoryMattersDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#UtilityRateRegulationRegulatoryMattersDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/UtilityRateRegulationRegulatoryMattersDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:href="ppl-20250630.xsd#ppl_RegulatoryMattersLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:href="ppl-20250630.xsd#ppl_RegulatoryMattersTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_343d80eb-2a5a-44fc-b60e-025752750bbe" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_dei_LegalEntityAxis_343d80eb-2a5a-44fc-b60e-025752750bbe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_343d80eb-2a5a-44fc-b60e-025752750bbe_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_343d80eb-2a5a-44fc-b60e-025752750bbe" xlink:to="loc_dei_EntityDomain_343d80eb-2a5a-44fc-b60e-025752750bbe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4818187b-586a-4c97-8be1-90ed87a5ef37" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_343d80eb-2a5a-44fc-b60e-025752750bbe" xlink:to="loc_dei_EntityDomain_4818187b-586a-4c97-8be1-90ed87a5ef37" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_69400da4-ebf0-418b-ab91-307686e27529" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4818187b-586a-4c97-8be1-90ed87a5ef37" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_69400da4-ebf0-418b-ab91-307686e27529" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_9691ce92-8e79-4f21-84db-a517182ee449" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4818187b-586a-4c97-8be1-90ed87a5ef37" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_9691ce92-8e79-4f21-84db-a517182ee449" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_c89b50cd-e914-47fe-8357-8292a7d16f30" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4818187b-586a-4c97-8be1-90ed87a5ef37" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_c89b50cd-e914-47fe-8357-8292a7d16f30" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCompanyMember_12847008-33a1-4e55-8350-6b5365a7a195" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4818187b-586a-4c97-8be1-90ed87a5ef37" xlink:to="loc_ppl_KentuckyUtilitiesCompanyMember_12847008-33a1-4e55-8350-6b5365a7a195" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorporationMember_d5c501c1-eb9c-4c63-8a22-ec995b69e376" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4818187b-586a-4c97-8be1-90ed87a5ef37" xlink:to="loc_ppl_PplElectricUtilitiesCorporationMember_d5c501c1-eb9c-4c63-8a22-ec995b69e376" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_4df0a76b-db65-4723-896b-c5fa1f75f90a" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_ppl_ByCompanyAxis_4df0a76b-db65-4723-896b-c5fa1f75f90a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_4df0a76b-db65-4723-896b-c5fa1f75f90a_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_4df0a76b-db65-4723-896b-c5fa1f75f90a" xlink:to="loc_ppl_ByCompanyDomain_4df0a76b-db65-4723-896b-c5fa1f75f90a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_b467222c-31ff-47aa-84b9-9f34166f2f92" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_4df0a76b-db65-4723-896b-c5fa1f75f90a" xlink:to="loc_ppl_ByCompanyDomain_b467222c-31ff-47aa-84b9-9f34166f2f92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorporationMember_a3b96b66-5cbe-4ffb-bd0b-79f6c27b6dab" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_b467222c-31ff-47aa-84b9-9f34166f2f92" xlink:to="loc_ppl_PplElectricUtilitiesCorporationMember_a3b96b66-5cbe-4ffb-bd0b-79f6c27b6dab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_3878b172-1c3d-4a56-91d1-c1ccff3254cc" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_b467222c-31ff-47aa-84b9-9f34166f2f92" xlink:to="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_3878b172-1c3d-4a56-91d1-c1ccff3254cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_b95adb39-6446-4587-a5fb-ec1fd09b918c" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_b467222c-31ff-47aa-84b9-9f34166f2f92" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_b95adb39-6446-4587-a5fb-ec1fd09b918c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCompanyMember_2472d34a-e2cb-429a-9491-6f69740b07f0" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_b467222c-31ff-47aa-84b9-9f34166f2f92" xlink:to="loc_ppl_KentuckyUtilitiesCompanyMember_2472d34a-e2cb-429a-9491-6f69740b07f0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_8b5fcb80-0eca-4616-9bd7-bfbb85e4bac3" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_b467222c-31ff-47aa-84b9-9f34166f2f92" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_8b5fcb80-0eca-4616-9bd7-bfbb85e4bac3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandEnergyMember_97973c46-70ae-4506-8606-21f201b3b3db" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandEnergyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_b467222c-31ff-47aa-84b9-9f34166f2f92" xlink:to="loc_ppl_RhodeIslandEnergyMember_97973c46-70ae-4506-8606-21f201b3b3db" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyAxis_aad99e28-0256-4463-a6c4-b239a33bb67a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAgencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_us-gaap_RegulatoryAgencyAxis_aad99e28-0256-4463-a6c4-b239a33bb67a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_aad99e28-0256-4463-a6c4-b239a33bb67a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_aad99e28-0256-4463-a6c4-b239a33bb67a" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_aad99e28-0256-4463-a6c4-b239a33bb67a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_e8d3be59-15a4-4196-beaf-2d0f8002b9e8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_aad99e28-0256-4463-a6c4-b239a33bb67a" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_e8d3be59-15a4-4196-beaf-2d0f8002b9e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyPublicServiceCommissionMember_d9c7a484-f75f-48ce-84e6-d6bee65a3a94" xlink:href="ppl-20250630.xsd#ppl_KentuckyPublicServiceCommissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_e8d3be59-15a4-4196-beaf-2d0f8002b9e8" xlink:to="loc_ppl_KentuckyPublicServiceCommissionMember_d9c7a484-f75f-48ce-84e6-d6bee65a3a94" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FederalEnergyRegulatoryCommissionMember_beecc9e6-4729-4e8a-85dd-1d67910a7e61" xlink:href="ppl-20250630.xsd#ppl_FederalEnergyRegulatoryCommissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_e8d3be59-15a4-4196-beaf-2d0f8002b9e8" xlink:to="loc_ppl_FederalEnergyRegulatoryCommissionMember_beecc9e6-4729-4e8a-85dd-1d67910a7e61" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandPublicUtilityCommissionMember_6b3acd72-c3f9-4d62-8baf-f2da02ccd610" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandPublicUtilityCommissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_e8d3be59-15a4-4196-beaf-2d0f8002b9e8" xlink:to="loc_ppl_RhodeIslandPublicUtilityCommissionMember_6b3acd72-c3f9-4d62-8baf-f2da02ccd610" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PennsylvaniaPublicUtilityCommissionMember_139a18af-71bd-4ee9-a1ac-0ce7ef0b539e" xlink:href="ppl-20250630.xsd#ppl_PennsylvaniaPublicUtilityCommissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_e8d3be59-15a4-4196-beaf-2d0f8002b9e8" xlink:to="loc_ppl_PennsylvaniaPublicUtilityCommissionMember_139a18af-71bd-4ee9-a1ac-0ce7ef0b539e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RatesTypeAxis_4561c1ad-3c12-41c3-bef0-e6e2d5199ed3" xlink:href="ppl-20250630.xsd#ppl_RatesTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_ppl_RatesTypeAxis_4561c1ad-3c12-41c3-bef0-e6e2d5199ed3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RatesTypeDomain_4561c1ad-3c12-41c3-bef0-e6e2d5199ed3_default" xlink:href="ppl-20250630.xsd#ppl_RatesTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_RatesTypeAxis_4561c1ad-3c12-41c3-bef0-e6e2d5199ed3" xlink:to="loc_ppl_RatesTypeDomain_4561c1ad-3c12-41c3-bef0-e6e2d5199ed3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RatesTypeDomain_279f838f-8063-42de-8767-fc2685b9dad8" xlink:href="ppl-20250630.xsd#ppl_RatesTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_RatesTypeAxis_4561c1ad-3c12-41c3-bef0-e6e2d5199ed3" xlink:to="loc_ppl_RatesTypeDomain_279f838f-8063-42de-8767-fc2685b9dad8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ElectricAndGasRatesMember_1f5b2aeb-6928-49fd-9933-49464e7a7f7c" xlink:href="ppl-20250630.xsd#ppl_ElectricAndGasRatesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RatesTypeDomain_279f838f-8063-42de-8767-fc2685b9dad8" xlink:to="loc_ppl_ElectricAndGasRatesMember_1f5b2aeb-6928-49fd-9933-49464e7a7f7c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ElectricRatesMember_81883cec-351e-48e1-aab9-ce110c474b96" xlink:href="ppl-20250630.xsd#ppl_ElectricRatesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RatesTypeDomain_279f838f-8063-42de-8767-fc2685b9dad8" xlink:to="loc_ppl_ElectricRatesMember_81883cec-351e-48e1-aab9-ce110c474b96" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GasRatesMember_70d7f36c-7ab4-4685-8d84-1af706bf974b" xlink:href="ppl-20250630.xsd#ppl_GasRatesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RatesTypeDomain_279f838f-8063-42de-8767-fc2685b9dad8" xlink:to="loc_ppl_GasRatesMember_70d7f36c-7ab4-4685-8d84-1af706bf974b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_7e825d3c-ccca-41fe-b0ae-7175aade647e" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_srt_CounterpartyNameAxis_7e825d3c-ccca-41fe-b0ae-7175aade647e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_7e825d3c-ccca-41fe-b0ae-7175aade647e_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_7e825d3c-ccca-41fe-b0ae-7175aade647e" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_7e825d3c-ccca-41fe-b0ae-7175aade647e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_26042997-18aa-42ac-b076-3c2bd43a6079" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_7e825d3c-ccca-41fe-b0ae-7175aade647e" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_26042997-18aa-42ac-b076-3c2bd43a6079" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_UnaffiliatedThirdPartyEntityMember_866dbdbc-963d-4275-b1b6-9e5636675ac8" xlink:href="ppl-20250630.xsd#ppl_UnaffiliatedThirdPartyEntityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_26042997-18aa-42ac-b076-3c2bd43a6079" xlink:to="loc_ppl_UnaffiliatedThirdPartyEntityMember_866dbdbc-963d-4275-b1b6-9e5636675ac8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_821d6112-ec05-4e24-ab6f-f4a0e2e1d2e0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_821d6112-ec05-4e24-ab6f-f4a0e2e1d2e0" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_821d6112-ec05-4e24-ab6f-f4a0e2e1d2e0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_821d6112-ec05-4e24-ab6f-f4a0e2e1d2e0" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_821d6112-ec05-4e24-ab6f-f4a0e2e1d2e0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_25a33edb-d756-450d-9173-073d380f1675" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_821d6112-ec05-4e24-ab6f-f4a0e2e1d2e0" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_25a33edb-d756-450d-9173-073d380f1675" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_aacfb4bb-2828-46cd-9af5-8f6a188e168e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_25a33edb-d756-450d-9173-073d380f1675" xlink:to="loc_us-gaap_SubsequentEventMember_aacfb4bb-2828-46cd-9af5-8f6a188e168e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_114f78e3-b8c4-4e18-932d-1a13e1f34520" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_srt_StatementScenarioAxis_114f78e3-b8c4-4e18-932d-1a13e1f34520" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_114f78e3-b8c4-4e18-932d-1a13e1f34520_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_114f78e3-b8c4-4e18-932d-1a13e1f34520" xlink:to="loc_srt_ScenarioUnspecifiedDomain_114f78e3-b8c4-4e18-932d-1a13e1f34520_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_ef1718be-7763-4835-aa60-a10749f5a692" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_114f78e3-b8c4-4e18-932d-1a13e1f34520" xlink:to="loc_srt_ScenarioUnspecifiedDomain_ef1718be-7763-4835-aa60-a10749f5a692" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_edbd0f3f-b724-46e8-87bc-53ef3c819d20" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_ef1718be-7763-4835-aa60-a10749f5a692" xlink:to="loc_srt_ScenarioForecastMember_edbd0f3f-b724-46e8-87bc-53ef3c819d20" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RIPUCApprovedROEAxis_b571ccf1-e7d6-4556-9315-839f51b3e929" xlink:href="ppl-20250630.xsd#ppl_RIPUCApprovedROEAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_ppl_RIPUCApprovedROEAxis_b571ccf1-e7d6-4556-9315-839f51b3e929" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RIPUCApprovedROEDomain_b571ccf1-e7d6-4556-9315-839f51b3e929_default" xlink:href="ppl-20250630.xsd#ppl_RIPUCApprovedROEDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_RIPUCApprovedROEAxis_b571ccf1-e7d6-4556-9315-839f51b3e929" xlink:to="loc_ppl_RIPUCApprovedROEDomain_b571ccf1-e7d6-4556-9315-839f51b3e929_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RIPUCApprovedROEDomain_f03df7ca-e593-48b8-acfa-21047acf968a" xlink:href="ppl-20250630.xsd#ppl_RIPUCApprovedROEDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_RIPUCApprovedROEAxis_b571ccf1-e7d6-4556-9315-839f51b3e929" xlink:to="loc_ppl_RIPUCApprovedROEDomain_f03df7ca-e593-48b8-acfa-21047acf968a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CommonEquityPercentageRelatedToApprovedRateMember_2ca58611-c3d4-4a93-bc2b-1b77282729af" xlink:href="ppl-20250630.xsd#ppl_CommonEquityPercentageRelatedToApprovedRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RIPUCApprovedROEDomain_f03df7ca-e593-48b8-acfa-21047acf968a" xlink:to="loc_ppl_CommonEquityPercentageRelatedToApprovedRateMember_2ca58611-c3d4-4a93-bc2b-1b77282729af" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FERCApprovedROEForTransmissionCostsAxis_4cebff28-2f19-474a-9d1b-fe75a16f1f58" xlink:href="ppl-20250630.xsd#ppl_FERCApprovedROEForTransmissionCostsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_ppl_FERCApprovedROEForTransmissionCostsAxis_4cebff28-2f19-474a-9d1b-fe75a16f1f58" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FERCApprovedROEForTransmissionCostsDomain_4cebff28-2f19-474a-9d1b-fe75a16f1f58_default" xlink:href="ppl-20250630.xsd#ppl_FERCApprovedROEForTransmissionCostsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_FERCApprovedROEForTransmissionCostsAxis_4cebff28-2f19-474a-9d1b-fe75a16f1f58" xlink:to="loc_ppl_FERCApprovedROEForTransmissionCostsDomain_4cebff28-2f19-474a-9d1b-fe75a16f1f58_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FERCApprovedROEForTransmissionCostsDomain_7db14a9b-aebc-4ebf-a4b4-d2720ed4763e" xlink:href="ppl-20250630.xsd#ppl_FERCApprovedROEForTransmissionCostsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_FERCApprovedROEForTransmissionCostsAxis_4cebff28-2f19-474a-9d1b-fe75a16f1f58" xlink:to="loc_ppl_FERCApprovedROEForTransmissionCostsDomain_7db14a9b-aebc-4ebf-a4b4-d2720ed4763e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MaximumROEAuthorizedMember_08e4bc8a-4d0b-4b17-8dea-41670c14b4e4" xlink:href="ppl-20250630.xsd#ppl_MaximumROEAuthorizedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FERCApprovedROEForTransmissionCostsDomain_7db14a9b-aebc-4ebf-a4b4-d2720ed4763e" xlink:to="loc_ppl_MaximumROEAuthorizedMember_08e4bc8a-4d0b-4b17-8dea-41670c14b4e4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AmountRemittedOnTheAuthorizedROEMember_8840cddf-b41a-49a4-bd7f-75f13a92c051" xlink:href="ppl-20250630.xsd#ppl_AmountRemittedOnTheAuthorizedROEMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FERCApprovedROEForTransmissionCostsDomain_7db14a9b-aebc-4ebf-a4b4-d2720ed4763e" xlink:to="loc_ppl_AmountRemittedOnTheAuthorizedROEMember_8840cddf-b41a-49a4-bd7f-75f13a92c051" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FY2024ElectricalISRPlanComponentAxis_d8172985-6d61-43d1-8c7f-c04ecaebf51b" xlink:href="ppl-20250630.xsd#ppl_FY2024ElectricalISRPlanComponentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_ppl_FY2024ElectricalISRPlanComponentAxis_d8172985-6d61-43d1-8c7f-c04ecaebf51b" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FY2024ElectricalISRPlanComponentDomain_d8172985-6d61-43d1-8c7f-c04ecaebf51b_default" xlink:href="ppl-20250630.xsd#ppl_FY2024ElectricalISRPlanComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_FY2024ElectricalISRPlanComponentAxis_d8172985-6d61-43d1-8c7f-c04ecaebf51b" xlink:to="loc_ppl_FY2024ElectricalISRPlanComponentDomain_d8172985-6d61-43d1-8c7f-c04ecaebf51b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FY2024ElectricalISRPlanComponentDomain_b2fe5627-3aed-4d30-a584-f38242039aec" xlink:href="ppl-20250630.xsd#ppl_FY2024ElectricalISRPlanComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_FY2024ElectricalISRPlanComponentAxis_d8172985-6d61-43d1-8c7f-c04ecaebf51b" xlink:to="loc_ppl_FY2024ElectricalISRPlanComponentDomain_b2fe5627-3aed-4d30-a584-f38242039aec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_VegetationManagementMember_c0424020-b83c-4ed9-ac96-2d62d438310f" xlink:href="ppl-20250630.xsd#ppl_VegetationManagementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FY2024ElectricalISRPlanComponentDomain_b2fe5627-3aed-4d30-a584-f38242039aec" xlink:to="loc_ppl_VegetationManagementMember_c0424020-b83c-4ed9-ac96-2d62d438310f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherOMMember_8ae60ce3-ceee-4239-a630-7d73234364e7" xlink:href="ppl-20250630.xsd#ppl_OtherOMMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FY2024ElectricalISRPlanComponentDomain_b2fe5627-3aed-4d30-a584-f38242039aec" xlink:to="loc_ppl_OtherOMMember_8ae60ce3-ceee-4239-a630-7d73234364e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CapitalInvestmentMember_443aa9c5-df6f-4387-99c5-a7b0bc70590b" xlink:href="ppl-20250630.xsd#ppl_CapitalInvestmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FY2024ElectricalISRPlanComponentDomain_b2fe5627-3aed-4d30-a584-f38242039aec" xlink:to="loc_ppl_CapitalInvestmentMember_443aa9c5-df6f-4387-99c5-a7b0bc70590b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnusualOrInfrequentItemAxis_4f7a7112-0f6d-41fd-a43d-0dd365b8ff73" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnusualOrInfrequentItemAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_us-gaap_UnusualOrInfrequentItemAxis_4f7a7112-0f6d-41fd-a43d-0dd365b8ff73" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_4f7a7112-0f6d-41fd-a43d-0dd365b8ff73_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnusualOrInfrequentItemDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_4f7a7112-0f6d-41fd-a43d-0dd365b8ff73" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_4f7a7112-0f6d-41fd-a43d-0dd365b8ff73_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_af70ffa5-4d30-4df2-af0a-3449b5e7ed05" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnusualOrInfrequentItemDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_4f7a7112-0f6d-41fd-a43d-0dd365b8ff73" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_af70ffa5-4d30-4df2-af0a-3449b5e7ed05" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_March2023KentuckyWindStormsMember_95737ff7-2825-41ed-acfc-bc3715136918" xlink:href="ppl-20250630.xsd#ppl_March2023KentuckyWindStormsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_af70ffa5-4d30-4df2-af0a-3449b5e7ed05" xlink:to="loc_ppl_March2023KentuckyWindStormsMember_95737ff7-2825-41ed-acfc-bc3715136918" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_May2024KentuckyStormMember_4cfb91f0-74e0-43fb-92d6-a09e912d4704" xlink:href="ppl-20250630.xsd#ppl_May2024KentuckyStormMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_af70ffa5-4d30-4df2-af0a-3449b5e7ed05" xlink:to="loc_ppl_May2024KentuckyStormMember_4cfb91f0-74e0-43fb-92d6-a09e912d4704" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_September2024KYStormMember_5aee08fa-1670-4d36-8a34-de69cc82aa53" xlink:href="ppl-20250630.xsd#ppl_September2024KYStormMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_af70ffa5-4d30-4df2-af0a-3449b5e7ed05" xlink:to="loc_ppl_September2024KYStormMember_5aee08fa-1670-4d36-8a34-de69cc82aa53" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MillCreekUnit1RetirementMember_09c4abc1-fd01-4902-bf67-a2c0739ea102" xlink:href="ppl-20250630.xsd#ppl_MillCreekUnit1RetirementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_af70ffa5-4d30-4df2-af0a-3449b5e7ed05" xlink:to="loc_ppl_MillCreekUnit1RetirementMember_09c4abc1-fd01-4902-bf67-a2c0739ea102" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_January2025KYStormMember_e56e1fbf-f0d6-44b7-acbb-09813afa40eb" xlink:href="ppl-20250630.xsd#ppl_January2025KYStormMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_af70ffa5-4d30-4df2-af0a-3449b5e7ed05" xlink:to="loc_ppl_January2025KYStormMember_e56e1fbf-f0d6-44b7-acbb-09813afa40eb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_A2025KYStormsMember_8a29f676-dfe0-45f3-b2cb-d151c480813f" xlink:href="ppl-20250630.xsd#ppl_A2025KYStormsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_af70ffa5-4d30-4df2-af0a-3449b5e7ed05" xlink:to="loc_ppl_A2025KYStormsMember_8a29f676-dfe0-45f3-b2cb-d151c480813f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetAxis_a63bf43c-6e11-4ae6-9322-f825a8c266f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAssetAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_us-gaap_RegulatoryAssetAxis_a63bf43c-6e11-4ae6-9322-f825a8c266f0" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_a63bf43c-6e11-4ae6-9322-f825a8c266f0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAssetAxis_a63bf43c-6e11-4ae6-9322-f825a8c266f0" xlink:to="loc_us-gaap_RegulatoryAssetDomain_a63bf43c-6e11-4ae6-9322-f825a8c266f0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_db66c3a1-6f3d-4490-9f9d-0db648fa63e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAssetAxis_a63bf43c-6e11-4ae6-9322-f825a8c266f0" xlink:to="loc_us-gaap_RegulatoryAssetDomain_db66c3a1-6f3d-4490-9f9d-0db648fa63e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherRegulatoryAssetsMember_bfdd862f-fe67-4ca4-9ae8-bcb69fb82148" xlink:href="ppl-20250630.xsd#ppl_OtherRegulatoryAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_db66c3a1-6f3d-4490-9f9d-0db648fa63e6" xlink:to="loc_ppl_OtherRegulatoryAssetsMember_bfdd862f-fe67-4ca4-9ae8-bcb69fb82148" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StormCostsMember_27eea990-0a62-4f21-8335-32b7a8673aa1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StormCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_db66c3a1-6f3d-4490-9f9d-0db648fa63e6" xlink:to="loc_us-gaap_StormCostsMember_27eea990-0a62-4f21-8335-32b7a8673aa1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FY2025ElectricalISRPlanComponentAxis_eee7fa49-8548-4999-a183-2125c4af9c70" xlink:href="ppl-20250630.xsd#ppl_FY2025ElectricalISRPlanComponentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_ppl_FY2025ElectricalISRPlanComponentAxis_eee7fa49-8548-4999-a183-2125c4af9c70" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FY2025ElectricalISRPlanComponentDomain_eee7fa49-8548-4999-a183-2125c4af9c70_default" xlink:href="ppl-20250630.xsd#ppl_FY2025ElectricalISRPlanComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_FY2025ElectricalISRPlanComponentAxis_eee7fa49-8548-4999-a183-2125c4af9c70" xlink:to="loc_ppl_FY2025ElectricalISRPlanComponentDomain_eee7fa49-8548-4999-a183-2125c4af9c70_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FY2025ElectricalISRPlanComponentDomain_5053c10f-88e0-480e-bfb4-45ed8e56e8b7" xlink:href="ppl-20250630.xsd#ppl_FY2025ElectricalISRPlanComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_FY2025ElectricalISRPlanComponentAxis_eee7fa49-8548-4999-a183-2125c4af9c70" xlink:to="loc_ppl_FY2025ElectricalISRPlanComponentDomain_5053c10f-88e0-480e-bfb4-45ed8e56e8b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_VegetationManagementMember_278dfdae-5e18-4268-ae95-cce8e540c54c" xlink:href="ppl-20250630.xsd#ppl_VegetationManagementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FY2025ElectricalISRPlanComponentDomain_5053c10f-88e0-480e-bfb4-45ed8e56e8b7" xlink:to="loc_ppl_VegetationManagementMember_278dfdae-5e18-4268-ae95-cce8e540c54c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherOMMember_4932bf43-7b6f-437c-94bb-6734de06f6b3" xlink:href="ppl-20250630.xsd#ppl_OtherOMMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FY2025ElectricalISRPlanComponentDomain_5053c10f-88e0-480e-bfb4-45ed8e56e8b7" xlink:to="loc_ppl_OtherOMMember_4932bf43-7b6f-437c-94bb-6734de06f6b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CapitalInvestmentMember_d228526a-9459-422e-9e11-69635976b2f5" xlink:href="ppl-20250630.xsd#ppl_CapitalInvestmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FY2025ElectricalISRPlanComponentDomain_5053c10f-88e0-480e-bfb4-45ed8e56e8b7" xlink:to="loc_ppl_CapitalInvestmentMember_d228526a-9459-422e-9e11-69635976b2f5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FY25GasISRPlanComponentAxis_8a070cda-ada2-4c6f-8ec5-0ee17ef702e5" xlink:href="ppl-20250630.xsd#ppl_FY25GasISRPlanComponentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_ppl_FY25GasISRPlanComponentAxis_8a070cda-ada2-4c6f-8ec5-0ee17ef702e5" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FY25GasISRPlanComponentDomain_8a070cda-ada2-4c6f-8ec5-0ee17ef702e5_default" xlink:href="ppl-20250630.xsd#ppl_FY25GasISRPlanComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_FY25GasISRPlanComponentAxis_8a070cda-ada2-4c6f-8ec5-0ee17ef702e5" xlink:to="loc_ppl_FY25GasISRPlanComponentDomain_8a070cda-ada2-4c6f-8ec5-0ee17ef702e5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FY25GasISRPlanComponentDomain_5fb7d9f8-5f10-4572-b9a6-e005bfa47905" xlink:href="ppl-20250630.xsd#ppl_FY25GasISRPlanComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_FY25GasISRPlanComponentAxis_8a070cda-ada2-4c6f-8ec5-0ee17ef702e5" xlink:to="loc_ppl_FY25GasISRPlanComponentDomain_5fb7d9f8-5f10-4572-b9a6-e005bfa47905" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CapitalInvestmentMember_bec2a7e3-69d2-4026-80c6-ac8064c4393b" xlink:href="ppl-20250630.xsd#ppl_CapitalInvestmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FY25GasISRPlanComponentDomain_5fb7d9f8-5f10-4572-b9a6-e005bfa47905" xlink:to="loc_ppl_CapitalInvestmentMember_bec2a7e3-69d2-4026-80c6-ac8064c4393b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherOMMember_21177dde-0d6e-414f-9460-c7d2a2bd01a9" xlink:href="ppl-20250630.xsd#ppl_OtherOMMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FY25GasISRPlanComponentDomain_5fb7d9f8-5f10-4572-b9a6-e005bfa47905" xlink:to="loc_ppl_OtherOMMember_21177dde-0d6e-414f-9460-c7d2a2bd01a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PavingCostsMember_867f00d2-380a-455a-b3fd-df41ee21f2ea" xlink:href="ppl-20250630.xsd#ppl_PavingCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FY25GasISRPlanComponentDomain_5fb7d9f8-5f10-4572-b9a6-e005bfa47905" xlink:to="loc_ppl_PavingCostsMember_867f00d2-380a-455a-b3fd-df41ee21f2ea" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GenerationUnitNameAxis_ba73e27f-9123-4f57-a41c-f5f736bf4f0b" xlink:href="ppl-20250630.xsd#ppl_GenerationUnitNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_ppl_GenerationUnitNameAxis_ba73e27f-9123-4f57-a41c-f5f736bf4f0b" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GenerationUnitNameDomain_ba73e27f-9123-4f57-a41c-f5f736bf4f0b_default" xlink:href="ppl-20250630.xsd#ppl_GenerationUnitNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_GenerationUnitNameAxis_ba73e27f-9123-4f57-a41c-f5f736bf4f0b" xlink:to="loc_ppl_GenerationUnitNameDomain_ba73e27f-9123-4f57-a41c-f5f736bf4f0b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GenerationUnitNameDomain_7621b541-923f-4cc7-9423-dde3327bfa1c" xlink:href="ppl-20250630.xsd#ppl_GenerationUnitNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_GenerationUnitNameAxis_ba73e27f-9123-4f57-a41c-f5f736bf4f0b" xlink:to="loc_ppl_GenerationUnitNameDomain_7621b541-923f-4cc7-9423-dde3327bfa1c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MillCreekUnit2Member_c0311bb0-3816-4e9d-a84e-569a85eb71c2" xlink:href="ppl-20250630.xsd#ppl_MillCreekUnit2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_GenerationUnitNameDomain_7621b541-923f-4cc7-9423-dde3327bfa1c" xlink:to="loc_ppl_MillCreekUnit2Member_c0311bb0-3816-4e9d-a84e-569a85eb71c2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FY26GasISRPlanComponentAxis_eb4bce08-735a-4243-8b68-34ed1aa24922" xlink:href="ppl-20250630.xsd#ppl_FY26GasISRPlanComponentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_ppl_FY26GasISRPlanComponentAxis_eb4bce08-735a-4243-8b68-34ed1aa24922" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FY26GasISRPlanComponentDomain_eb4bce08-735a-4243-8b68-34ed1aa24922_default" xlink:href="ppl-20250630.xsd#ppl_FY26GasISRPlanComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_FY26GasISRPlanComponentAxis_eb4bce08-735a-4243-8b68-34ed1aa24922" xlink:to="loc_ppl_FY26GasISRPlanComponentDomain_eb4bce08-735a-4243-8b68-34ed1aa24922_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FY26GasISRPlanComponentDomain_975128cc-c763-4c98-940b-b41e2a9fbad5" xlink:href="ppl-20250630.xsd#ppl_FY26GasISRPlanComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_FY26GasISRPlanComponentAxis_eb4bce08-735a-4243-8b68-34ed1aa24922" xlink:to="loc_ppl_FY26GasISRPlanComponentDomain_975128cc-c763-4c98-940b-b41e2a9fbad5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PavingCostsMember_c55c0612-2fad-47ae-8975-8a57eb17e0a0" xlink:href="ppl-20250630.xsd#ppl_PavingCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FY26GasISRPlanComponentDomain_975128cc-c763-4c98-940b-b41e2a9fbad5" xlink:to="loc_ppl_PavingCostsMember_c55c0612-2fad-47ae-8975-8a57eb17e0a0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CapitalInvestmentMember_bb406913-d129-4fa0-97c3-2fc3e410f3bd" xlink:href="ppl-20250630.xsd#ppl_CapitalInvestmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FY26GasISRPlanComponentDomain_975128cc-c763-4c98-940b-b41e2a9fbad5" xlink:to="loc_ppl_CapitalInvestmentMember_bb406913-d129-4fa0-97c3-2fc3e410f3bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FY2026ElectricalISRPlanComponentAxis_7ba77642-bfc3-48d2-af01-53b8737a1687" xlink:href="ppl-20250630.xsd#ppl_FY2026ElectricalISRPlanComponentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_ppl_FY2026ElectricalISRPlanComponentAxis_7ba77642-bfc3-48d2-af01-53b8737a1687" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FY2026ElectricalISRPlanComponentDomain_7ba77642-bfc3-48d2-af01-53b8737a1687_default" xlink:href="ppl-20250630.xsd#ppl_FY2026ElectricalISRPlanComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_FY2026ElectricalISRPlanComponentAxis_7ba77642-bfc3-48d2-af01-53b8737a1687" xlink:to="loc_ppl_FY2026ElectricalISRPlanComponentDomain_7ba77642-bfc3-48d2-af01-53b8737a1687_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FY2026ElectricalISRPlanComponentDomain_4ef01494-17cd-45a1-8498-4215d25c302e" xlink:href="ppl-20250630.xsd#ppl_FY2026ElectricalISRPlanComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_FY2026ElectricalISRPlanComponentAxis_7ba77642-bfc3-48d2-af01-53b8737a1687" xlink:to="loc_ppl_FY2026ElectricalISRPlanComponentDomain_4ef01494-17cd-45a1-8498-4215d25c302e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherOMMember_aceebb3b-8549-4dbe-a05b-8ccef83be1fe" xlink:href="ppl-20250630.xsd#ppl_OtherOMMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FY2026ElectricalISRPlanComponentDomain_4ef01494-17cd-45a1-8498-4215d25c302e" xlink:to="loc_ppl_OtherOMMember_aceebb3b-8549-4dbe-a05b-8ccef83be1fe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_VegetationManagementMember_7028df67-f902-4dc5-b813-591a6195cf30" xlink:href="ppl-20250630.xsd#ppl_VegetationManagementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FY2026ElectricalISRPlanComponentDomain_4ef01494-17cd-45a1-8498-4215d25c302e" xlink:to="loc_ppl_VegetationManagementMember_7028df67-f902-4dc5-b813-591a6195cf30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AMFCapitalInvestmentMember_b4c7e684-a123-4e15-adfc-a5cfc6bb30c6" xlink:href="ppl-20250630.xsd#ppl_AMFCapitalInvestmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FY2026ElectricalISRPlanComponentDomain_4ef01494-17cd-45a1-8498-4215d25c302e" xlink:to="loc_ppl_AMFCapitalInvestmentMember_b4c7e684-a123-4e15-adfc-a5cfc6bb30c6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CapitalInvestmentMember_7c31c831-0e42-4a55-b8ac-6ca3cfafe866" xlink:href="ppl-20250630.xsd#ppl_CapitalInvestmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FY2026ElectricalISRPlanComponentDomain_4ef01494-17cd-45a1-8498-4215d25c302e" xlink:to="loc_ppl_CapitalInvestmentMember_7c31c831-0e42-4a55-b8ac-6ca3cfafe866" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_A2025CPCNComponentAxis_e1011160-797d-432b-8a95-203a614a5d61" xlink:href="ppl-20250630.xsd#ppl_A2025CPCNComponentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_RegulatoryMattersTable_f3a29cd7-d866-4cc8-9086-f0ffd2c5a9f0" xlink:to="loc_ppl_A2025CPCNComponentAxis_e1011160-797d-432b-8a95-203a614a5d61" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_A2025CPCNComponentDomain_e1011160-797d-432b-8a95-203a614a5d61_default" xlink:href="ppl-20250630.xsd#ppl_A2025CPCNComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_A2025CPCNComponentAxis_e1011160-797d-432b-8a95-203a614a5d61" xlink:to="loc_ppl_A2025CPCNComponentDomain_e1011160-797d-432b-8a95-203a614a5d61_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_A2025CPCNComponentDomain_0c555d4a-0fea-4f88-8095-6afe3104b7c9" xlink:href="ppl-20250630.xsd#ppl_A2025CPCNComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_A2025CPCNComponentAxis_e1011160-797d-432b-8a95-203a614a5d61" xlink:to="loc_ppl_A2025CPCNComponentDomain_0c555d4a-0fea-4f88-8095-6afe3104b7c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CaneRunBESSMember_af3ae0cb-2e4d-43e9-9c12-c255b0936616" xlink:href="ppl-20250630.xsd#ppl_CaneRunBESSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_A2025CPCNComponentDomain_0c555d4a-0fea-4f88-8095-6afe3104b7c9" xlink:to="loc_ppl_CaneRunBESSMember_af3ae0cb-2e4d-43e9-9c12-c255b0936616" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MillCreekNGCCMember_78cdf55d-3d68-4ccf-bcc4-4cda8060308c" xlink:href="ppl-20250630.xsd#ppl_MillCreekNGCCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_A2025CPCNComponentDomain_0c555d4a-0fea-4f88-8095-6afe3104b7c9" xlink:to="loc_ppl_MillCreekNGCCMember_78cdf55d-3d68-4ccf-bcc4-4cda8060308c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AmountOfHoldHarmlessObligationToBeCreditedToCustomersIn2027_461062a0-5375-42cd-b7ff-81f3022fbe9f" xlink:href="ppl-20250630.xsd#ppl_AmountOfHoldHarmlessObligationToBeCreditedToCustomersIn2027"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_AmountOfHoldHarmlessObligationToBeCreditedToCustomersIn2027_461062a0-5375-42cd-b7ff-81f3022fbe9f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AmountOfHoldHarmlessObligationToBeCreditedToCustomersIn2026_c0bf649f-474f-4558-b095-f0876c0beee7" xlink:href="ppl-20250630.xsd#ppl_AmountOfHoldHarmlessObligationToBeCreditedToCustomersIn2026"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_AmountOfHoldHarmlessObligationToBeCreditedToCustomersIn2026_c0bf649f-474f-4558-b095-f0876c0beee7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PublicUtilitiesExpectedCapitalCostsToComply_4594c986-3256-4fd3-98d8-fd7ce511eaed" xlink:href="ppl-20250630.xsd#ppl_PublicUtilitiesExpectedCapitalCostsToComply"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_PublicUtilitiesExpectedCapitalCostsToComply_4594c986-3256-4fd3-98d8-fd7ce511eaed" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatoryMattersKentuckyActivitiesRateCaseProceedingsAbstract_8d20c447-e7be-4323-b10d-5617fde5cc2f" xlink:href="ppl-20250630.xsd#ppl_RegulatoryMattersKentuckyActivitiesRateCaseProceedingsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_RegulatoryMattersKentuckyActivitiesRateCaseProceedingsAbstract_8d20c447-e7be-4323-b10d-5617fde5cc2f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_3e318122-bbe3-45b5-b4ff-9c215fb81683" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_3e318122-bbe3-45b5-b4ff-9c215fb81683" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatoryLiabilityDueToROEReserveAfterTax_38f1304d-4da2-4f9d-bb87-404eef4b192c" xlink:href="ppl-20250630.xsd#ppl_RegulatoryLiabilityDueToROEReserveAfterTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_RegulatoryLiabilityDueToROEReserveAfterTax_38f1304d-4da2-4f9d-bb87-404eef4b192c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatoryLiabilityDueToROEReserveAfterTax_1a259106-8ddb-49a6-9ed8-aad59294d372" xlink:href="ppl-20250630.xsd#ppl_RegulatoryLiabilityDueToROEReserveAfterTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatoryLiabilityDueToROEReserve_ea353c99-2674-4cc0-92db-da1188494b4c" xlink:href="ppl-20250630.xsd#ppl_RegulatoryLiabilityDueToROEReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_RegulatoryLiabilityDueToROEReserve_ea353c99-2674-4cc0-92db-da1188494b4c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AmortizationOfRevenueReserveForROEChallenge_c07fd33c-adef-440e-82ab-fa998afcdb16" xlink:href="ppl-20250630.xsd#ppl_AmortizationOfRevenueReserveForROEChallenge"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_AmortizationOfRevenueReserveForROEChallenge_c07fd33c-adef-440e-82ab-fa998afcdb16" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NewROEProposedByNETOAndApprovedByFERC_e569c86f-71a6-4c79-9b0b-47942a00a317" xlink:href="ppl-20250630.xsd#ppl_NewROEProposedByNETOAndApprovedByFERC"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_NewROEProposedByNETOAndApprovedByFERC_e569c86f-71a6-4c79-9b0b-47942a00a317" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PercentageOfCommonEquityUsedOnAllowedROE_cc9727fd-78c6-4e99-bb22-42d7b5bc9c9f" xlink:href="ppl-20250630.xsd#ppl_PercentageOfCommonEquityUsedOnAllowedROE"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_PercentageOfCommonEquityUsedOnAllowedROE_cc9727fd-78c6-4e99-bb22-42d7b5bc9c9f" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_InitialMinimumBaseROEToBeResetByTheFERC_dae29c97-7ff4-4fd5-91d6-f4aedf2d7760" xlink:href="ppl-20250630.xsd#ppl_InitialMinimumBaseROEToBeResetByTheFERC"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_InitialMinimumBaseROEToBeResetByTheFERC_dae29c97-7ff4-4fd5-91d6-f4aedf2d7760" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EstimateMaximumDisallowedAFUDC_c00cff90-e6e8-469a-bb09-f2497d170120" xlink:href="ppl-20250630.xsd#ppl_EstimateMaximumDisallowedAFUDC"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_EstimateMaximumDisallowedAFUDC_c00cff90-e6e8-469a-bb09-f2497d170120" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MaximumBaseROEResetByFERC_43233e7c-92f5-4221-967c-adbb06bb63d3" xlink:href="ppl-20250630.xsd#ppl_MaximumBaseROEResetByFERC"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_MaximumBaseROEResetByFERC_43233e7c-92f5-4221-967c-adbb06bb63d3" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FERCGrantedROE_b7441dc3-8cc1-4039-a964-d08792c52f65" xlink:href="ppl-20250630.xsd#ppl_FERCGrantedROE"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_FERCGrantedROE_b7441dc3-8cc1-4039-a964-d08792c52f65" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AmountOfROERemittedByNEP_d1025980-00a8-439d-b875-12a4c989f782" xlink:href="ppl-20250630.xsd#ppl_AmountOfROERemittedByNEP"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_AmountOfROERemittedByNEP_d1025980-00a8-439d-b875-12a4c989f782" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EstimateOfMinimumDisallowedRecoveryOfAFUDC_bacc3d96-6dc3-4e86-9d84-af63d36f4686" xlink:href="ppl-20250630.xsd#ppl_EstimateOfMinimumDisallowedRecoveryOfAFUDC"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_EstimateOfMinimumDisallowedRecoveryOfAFUDC_bacc3d96-6dc3-4e86-9d84-af63d36f4686" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MinimumBaseROEResetByFERC_6588d309-6f24-45b5-86d5-074c41853992" xlink:href="ppl-20250630.xsd#ppl_MinimumBaseROEResetByFERC"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_MinimumBaseROEResetByFERC_6588d309-6f24-45b5-86d5-074c41853992" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DelayedCostRecoveryOnMainReplacementProgram_08dc94de-928c-473e-8c90-4ecd6af0519c" xlink:href="ppl-20250630.xsd#ppl_DelayedCostRecoveryOnMainReplacementProgram"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_DelayedCostRecoveryOnMainReplacementProgram_08dc94de-928c-473e-8c90-4ecd6af0519c" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatoryLiabilityDueToROEReserveBeforeTax_43eec75a-6f43-4bb3-a5ed-fa787fb11d30" xlink:href="ppl-20250630.xsd#ppl_RegulatoryLiabilityDueToROEReserveBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_RegulatoryLiabilityDueToROEReserveBeforeTax_43eec75a-6f43-4bb3-a5ed-fa787fb11d30" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SupplementalCapitalInvestmentToSpendOnTheFY2024GasISRPlan_cc382255-179e-4b6e-847a-70113c8da22d" xlink:href="ppl-20250630.xsd#ppl_SupplementalCapitalInvestmentToSpendOnTheFY2024GasISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_SupplementalCapitalInvestmentToSpendOnTheFY2024GasISRPlan_cc382255-179e-4b6e-847a-70113c8da22d" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SupplementalCapitalInvestmentSpendAmountAgreedToBetweenRIEAndRIPUC_bba43ba3-8d32-4c75-9de9-47a73fbc0046" xlink:href="ppl-20250630.xsd#ppl_SupplementalCapitalInvestmentSpendAmountAgreedToBetweenRIEAndRIPUC"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_SupplementalCapitalInvestmentSpendAmountAgreedToBetweenRIEAndRIPUC_bba43ba3-8d32-4c75-9de9-47a73fbc0046" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SupplementalCapitalInvestmentToSpendOnTheFY2024ElectricISRPlan_b49432d0-5503-4670-8eef-f532fbb33cfa" xlink:href="ppl-20250630.xsd#ppl_SupplementalCapitalInvestmentToSpendOnTheFY2024ElectricISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_SupplementalCapitalInvestmentToSpendOnTheFY2024ElectricISRPlan_b49432d0-5503-4670-8eef-f532fbb33cfa" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_A2ndSupplementalCapitalInvestmentToSpendOnTheFY2024ElectricalISRPlan_6799797f-4e74-4b14-afb7-b2827665d2e0" xlink:href="ppl-20250630.xsd#ppl_A2ndSupplementalCapitalInvestmentToSpendOnTheFY2024ElectricalISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_A2ndSupplementalCapitalInvestmentToSpendOnTheFY2024ElectricalISRPlan_6799797f-4e74-4b14-afb7-b2827665d2e0" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CPCNNGCCCombustionTurbineFacilitiesPower_315203bf-c0a8-49de-b92f-ef2b7f0ab7ce" xlink:href="ppl-20250630.xsd#ppl_CPCNNGCCCombustionTurbineFacilitiesPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_CPCNNGCCCombustionTurbineFacilitiesPower_315203bf-c0a8-49de-b92f-ef2b7f0ab7ce" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CPCNSolarPhotovoltaicFacilityToBeConstructedPower_f372b578-6366-4d10-b469-41ebcc817d39" xlink:href="ppl-20250630.xsd#ppl_CPCNSolarPhotovoltaicFacilityToBeConstructedPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_CPCNSolarPhotovoltaicFacilityToBeConstructedPower_f372b578-6366-4d10-b469-41ebcc817d39" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CPCNSolarPhotovoltaicFacilityToBeAcquiredPower_8625698f-15eb-4700-8d0b-50512f989327" xlink:href="ppl-20250630.xsd#ppl_CPCNSolarPhotovoltaicFacilityToBeAcquiredPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_CPCNSolarPhotovoltaicFacilityToBeAcquiredPower_8625698f-15eb-4700-8d0b-50512f989327" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CPCN4HourBatteryEnergyStorageFacilityToBeConstructedPower_17f5cdf5-618a-43d5-8d3d-a22338ce3233" xlink:href="ppl-20250630.xsd#ppl_CPCN4HourBatteryEnergyStorageFacilityToBeConstructedPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_CPCN4HourBatteryEnergyStorageFacilityToBeConstructedPower_17f5cdf5-618a-43d5-8d3d-a22338ce3233" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CPCNNewAndAdjustedEnergyEfficiencyProgramsOverallPowerNeedReduction_b25dd9ca-cfe9-4896-88f3-3cddf2284ae9" xlink:href="ppl-20250630.xsd#ppl_CPCNNewAndAdjustedEnergyEfficiencyProgramsOverallPowerNeedReduction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_CPCNNewAndAdjustedEnergyEfficiencyProgramsOverallPowerNeedReduction_b25dd9ca-cfe9-4896-88f3-3cddf2284ae9" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TotalCapacityOfPowerPurchaseAgreementsNotSubjectToKPSCApprovalPower_2f54e67f-6628-48bc-9b14-0bd59d6d51a5" xlink:href="ppl-20250630.xsd#ppl_TotalCapacityOfPowerPurchaseAgreementsNotSubjectToKPSCApprovalPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_TotalCapacityOfPowerPurchaseAgreementsNotSubjectToKPSCApprovalPower_2f54e67f-6628-48bc-9b14-0bd59d6d51a5" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NewNGCCKUPlannedOwnershipPercentage_314cc7ae-746f-4883-b974-ce835a9f9aab" xlink:href="ppl-20250630.xsd#ppl_NewNGCCKUPlannedOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_NewNGCCKUPlannedOwnershipPercentage_314cc7ae-746f-4883-b974-ce835a9f9aab" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NewNGCCLGEPlannedOwnershipPercentage_d52ffe76-f393-4e20-b736-386fe9443768" xlink:href="ppl-20250630.xsd#ppl_NewNGCCLGEPlannedOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_NewNGCCLGEPlannedOwnershipPercentage_d52ffe76-f393-4e20-b736-386fe9443768" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NewSolarUnitsKUPlannedOwnershipPercentage_d163bc9e-6746-4131-bdc3-68a614be831a" xlink:href="ppl-20250630.xsd#ppl_NewSolarUnitsKUPlannedOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_NewSolarUnitsKUPlannedOwnershipPercentage_d163bc9e-6746-4131-bdc3-68a614be831a" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NewSolarUnitsLGEPlannedOwnershipPercentage_7236277e-ee17-4f1d-b098-206bbbdff1fc" xlink:href="ppl-20250630.xsd#ppl_NewSolarUnitsLGEPlannedOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_NewSolarUnitsLGEPlannedOwnershipPercentage_7236277e-ee17-4f1d-b098-206bbbdff1fc" xlink:type="arc" order="33"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MillCreek1UnitGenerationCapacityPower_495cb526-1fad-44e9-9520-325ef9fc25c0" xlink:href="ppl-20250630.xsd#ppl_MillCreek1UnitGenerationCapacityPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_MillCreek1UnitGenerationCapacityPower_495cb526-1fad-44e9-9520-325ef9fc25c0" xlink:type="arc" order="34"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EWBrown3UnitGenerationCapacityPower_4e369cb9-b36a-4066-9f34-f8abc199b2ce" xlink:href="ppl-20250630.xsd#ppl_EWBrown3UnitGenerationCapacityPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_EWBrown3UnitGenerationCapacityPower_4e369cb9-b36a-4066-9f34-f8abc199b2ce" xlink:type="arc" order="35"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MillCreek2UnitGenerationCapacityPower_c5aed913-4e12-4224-9b7c-ce739b88e808" xlink:href="ppl-20250630.xsd#ppl_MillCreek2UnitGenerationCapacityPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_MillCreek2UnitGenerationCapacityPower_c5aed913-4e12-4224-9b7c-ce739b88e808" xlink:type="arc" order="36"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_Ghent2UnitGenerationCapacityPower_f8ccf197-9433-4b51-ad65-911e7c4a2e83" xlink:href="ppl-20250630.xsd#ppl_Ghent2UnitGenerationCapacityPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_Ghent2UnitGenerationCapacityPower_f8ccf197-9433-4b51-ad65-911e7c4a2e83" xlink:type="arc" order="37"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RIPUCApprovedFY2024GasISRPlanForCapitalInvestmentSpend_30e4b701-e94f-4f9d-a161-3b4feaff25eb" xlink:href="ppl-20250630.xsd#ppl_RIPUCApprovedFY2024GasISRPlanForCapitalInvestmentSpend"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_RIPUCApprovedFY2024GasISRPlanForCapitalInvestmentSpend_30e4b701-e94f-4f9d-a161-3b4feaff25eb" xlink:type="arc" order="38"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ApprovedCapitalInvestmentSpendOnFY2024ElectricISRPlan_755c854f-b9f0-4d33-9999-dae75a3982f7" xlink:href="ppl-20250630.xsd#ppl_ApprovedCapitalInvestmentSpendOnFY2024ElectricISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_ApprovedCapitalInvestmentSpendOnFY2024ElectricISRPlan_755c854f-b9f0-4d33-9999-dae75a3982f7" xlink:type="arc" order="39"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EstimatedNetPresentValueCostsOfAMFProgram_a0f5e6bc-a7cd-4079-8c7e-f834698f33f9" xlink:href="ppl-20250630.xsd#ppl_EstimatedNetPresentValueCostsOfAMFProgram"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_EstimatedNetPresentValueCostsOfAMFProgram_a0f5e6bc-a7cd-4079-8c7e-f834698f33f9" xlink:type="arc" order="40"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BenefitCostRatioYieldOfTheAMFProgram_a338711f-945c-41ad-92f9-04c14928c59a" xlink:href="ppl-20250630.xsd#ppl_BenefitCostRatioYieldOfTheAMFProgram"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_BenefitCostRatioYieldOfTheAMFProgram_a338711f-945c-41ad-92f9-04c14928c59a" xlink:type="arc" order="41"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NPVToBeObtainedThroughAMFProgramOver20Years_816bf203-ce05-4bff-aee0-f297020227ac" xlink:href="ppl-20250630.xsd#ppl_NPVToBeObtainedThroughAMFProgramOver20Years"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_NPVToBeObtainedThroughAMFProgramOver20Years_816bf203-ce05-4bff-aee0-f297020227ac" xlink:type="arc" order="42"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EstimatedAmountOfRecoverableMarch2023StormCosts_a951a297-de7f-4e8e-b85f-31c0198f98fa" xlink:href="ppl-20250630.xsd#ppl_EstimatedAmountOfRecoverableMarch2023StormCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_EstimatedAmountOfRecoverableMarch2023StormCosts_a951a297-de7f-4e8e-b85f-31c0198f98fa" xlink:type="arc" order="43"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivablePurchase_8801a752-1415-4a4f-91f4-ceda2564b4f6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivablePurchase"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_us-gaap_AccountsReceivablePurchase_8801a752-1415-4a4f-91f4-ceda2564b4f6" xlink:type="arc" order="44"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AMFProgramProjectLifeYears_6dd95d2f-1a18-439f-a329-57a7f501ca64" xlink:href="ppl-20250630.xsd#ppl_AMFProgramProjectLifeYears"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_AMFProgramProjectLifeYears_6dd95d2f-1a18-439f-a329-57a7f501ca64" xlink:type="arc" order="45"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmountOfRegulatoryCostsNotYetApproved_1c20f788-7545-483b-a5dd-834b5cc56a85" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmountOfRegulatoryCostsNotYetApproved"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_us-gaap_AmountOfRegulatoryCostsNotYetApproved_1c20f788-7545-483b-a5dd-834b5cc56a85" xlink:type="arc" order="46"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInRegulatoryLiabilities_acea00fb-09af-424e-b84f-2923ef6687bc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInRegulatoryLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_us-gaap_IncreaseDecreaseInRegulatoryLiabilities_acea00fb-09af-424e-b84f-2923ef6687bc" xlink:type="arc" order="47"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RecoveryCapOnCapitalInvestmentRelatedToAMFProgram_172922fa-21fb-40a0-8bae-ab4f07c7812f" xlink:href="ppl-20250630.xsd#ppl_RecoveryCapOnCapitalInvestmentRelatedToAMFProgram"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_RecoveryCapOnCapitalInvestmentRelatedToAMFProgram_172922fa-21fb-40a0-8bae-ab4f07c7812f" xlink:type="arc" order="48"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ProposedCapitalInvestmentSpendOnFY2025GasISRPlan_ad312114-8de1-4722-b14d-fa698b5e938f" xlink:href="ppl-20250630.xsd#ppl_ProposedCapitalInvestmentSpendOnFY2025GasISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_ProposedCapitalInvestmentSpendOnFY2025GasISRPlan_ad312114-8de1-4722-b14d-fa698b5e938f" xlink:type="arc" order="49"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ProposedCapitalInvestmentSpendOnFY2025ElectricISRPlan_1bc629d9-e2f7-4c07-a038-1bc3bec52177" xlink:href="ppl-20250630.xsd#ppl_ProposedCapitalInvestmentSpendOnFY2025ElectricISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_ProposedCapitalInvestmentSpendOnFY2025ElectricISRPlan_1bc629d9-e2f7-4c07-a038-1bc3bec52177" xlink:type="arc" order="50"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ProposedAdditionalContingencyPlanSpendOnFY2025GasISRPlan_6265c8ce-e7dc-4bf8-9854-9d801da76152" xlink:href="ppl-20250630.xsd#ppl_ProposedAdditionalContingencyPlanSpendOnFY2025GasISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_ProposedAdditionalContingencyPlanSpendOnFY2025GasISRPlan_6265c8ce-e7dc-4bf8-9854-9d801da76152" xlink:type="arc" order="51"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TotalApprovedSpendOnFY2025GasISRPlan_5b60b63f-d38d-45bd-b40b-bd38add917e4" xlink:href="ppl-20250630.xsd#ppl_TotalApprovedSpendOnFY2025GasISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_TotalApprovedSpendOnFY2025GasISRPlan_5b60b63f-d38d-45bd-b40b-bd38add917e4" xlink:type="arc" order="52"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ApprovedContingencyPlanSpendOnFY2025GasISRPlan_2a2b6b23-5d04-4bbd-84dd-6948a2ee2c1e" xlink:href="ppl-20250630.xsd#ppl_ApprovedContingencyPlanSpendOnFY2025GasISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_ApprovedContingencyPlanSpendOnFY2025GasISRPlan_2a2b6b23-5d04-4bbd-84dd-6948a2ee2c1e" xlink:type="arc" order="53"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ApprovedCapitalInvestmentSpendOnFY2025ElectricISRPlan_7466fd2c-848c-4b49-bbee-6a6d102bda76" xlink:href="ppl-20250630.xsd#ppl_ApprovedCapitalInvestmentSpendOnFY2025ElectricISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_ApprovedCapitalInvestmentSpendOnFY2025ElectricISRPlan_7466fd2c-848c-4b49-bbee-6a6d102bda76" xlink:type="arc" order="54"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BillingIssuesExpensesIncurred_d057e0c1-3474-49d2-8149-4d4ee2ff11d2" xlink:href="ppl-20250630.xsd#ppl_BillingIssuesExpensesIncurred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_BillingIssuesExpensesIncurred_d057e0c1-3474-49d2-8149-4d4ee2ff11d2" xlink:type="arc" order="55"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ApprovedAdditionalPotentialCapitalSpendOnFY2025GasISRPlanForPavingOM_21cc5677-238b-46be-9834-2747068c3dbd" xlink:href="ppl-20250630.xsd#ppl_ApprovedAdditionalPotentialCapitalSpendOnFY2025GasISRPlanForPavingOM"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_ApprovedAdditionalPotentialCapitalSpendOnFY2025GasISRPlanForPavingOM_21cc5677-238b-46be-9834-2747068c3dbd" xlink:type="arc" order="56"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PPLElectricBillingIssueCivilPenaltyToBePaid_2943463a-d3c7-449e-ba63-0a68ef83357b" xlink:href="ppl-20250630.xsd#ppl_PPLElectricBillingIssueCivilPenaltyToBePaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_PPLElectricBillingIssueCivilPenaltyToBePaid_2943463a-d3c7-449e-ba63-0a68ef83357b" xlink:type="arc" order="57"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PPLElectricBillingIssueDonationToBePaid_bd40bb93-43d3-44fd-b762-1f14fe629c18" xlink:href="ppl-20250630.xsd#ppl_PPLElectricBillingIssueDonationToBePaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_PPLElectricBillingIssueDonationToBePaid_bd40bb93-43d3-44fd-b762-1f14fe629c18" xlink:type="arc" order="58"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DistributionSystemImprovementChargeCap_efeb1232-6b2a-49eb-987a-3929d7ad5947" xlink:href="ppl-20250630.xsd#ppl_DistributionSystemImprovementChargeCap"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_DistributionSystemImprovementChargeCap_efeb1232-6b2a-49eb-987a-3929d7ad5947" xlink:type="arc" order="59"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RequestedDistributionSystemImprovementChargeCap_71a526b8-38d2-4962-87d2-ca9ba7dbfefa" xlink:href="ppl-20250630.xsd#ppl_RequestedDistributionSystemImprovementChargeCap"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_RequestedDistributionSystemImprovementChargeCap_71a526b8-38d2-4962-87d2-ca9ba7dbfefa" xlink:type="arc" order="60"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AmountNotObjectedByTheRIPUCToBeRecordedAsARegulatoryAsset_5737a521-8e2f-46ba-8bde-3cde250dfcb1" xlink:href="ppl-20250630.xsd#ppl_AmountNotObjectedByTheRIPUCToBeRecordedAsARegulatoryAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_AmountNotObjectedByTheRIPUCToBeRecordedAsARegulatoryAsset_5737a521-8e2f-46ba-8bde-3cde250dfcb1" xlink:type="arc" order="61"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetsNoncurrent_1c51b4b4-ebb6-4f88-863d-41e18adcdce0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_us-gaap_RegulatoryAssetsNoncurrent_1c51b4b4-ebb6-4f88-863d-41e18adcdce0" xlink:type="arc" order="62"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PPLElectricBillingIssueDonationPaidPerTheSettlement_926d915b-25af-4316-b6b3-a8b862bddd65" xlink:href="ppl-20250630.xsd#ppl_PPLElectricBillingIssueDonationPaidPerTheSettlement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_PPLElectricBillingIssueDonationPaidPerTheSettlement_926d915b-25af-4316-b6b3-a8b862bddd65" xlink:type="arc" order="63"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing_eaf67783-e23e-499a-8592-2da71ad32e6a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing_eaf67783-e23e-499a-8592-2da71ad32e6a" xlink:type="arc" order="64"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PublicUtilitiesPropertyPlantAndEquipmentGenerationExpectedRemainingBookValueAtRetirement_6b2d5de1-ddb0-4acd-943f-f4926f7151e5" xlink:href="ppl-20250630.xsd#ppl_PublicUtilitiesPropertyPlantAndEquipmentGenerationExpectedRemainingBookValueAtRetirement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_PublicUtilitiesPropertyPlantAndEquipmentGenerationExpectedRemainingBookValueAtRetirement_6b2d5de1-ddb0-4acd-943f-f4926f7151e5" xlink:type="arc" order="65"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ContingencyPlanSpendOnFY2026GasISRPlan_8ce1952f-f10b-41cd-ad8f-b0440e337f5f" xlink:href="ppl-20250630.xsd#ppl_ContingencyPlanSpendOnFY2026GasISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_ContingencyPlanSpendOnFY2026GasISRPlan_8ce1952f-f10b-41cd-ad8f-b0440e337f5f" xlink:type="arc" order="66"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CapitalInvestmentSpendOnFY2026GasISRPlan_a6905d00-9f33-4b49-9b57-ee8a3d318331" xlink:href="ppl-20250630.xsd#ppl_CapitalInvestmentSpendOnFY2026GasISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_CapitalInvestmentSpendOnFY2026GasISRPlan_a6905d00-9f33-4b49-9b57-ee8a3d318331" xlink:type="arc" order="67"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CapitalInvestmentSpendOnFY2026ElectricISRPlan_019c368e-fd98-4eb8-8158-3018f1cd80d1" xlink:href="ppl-20250630.xsd#ppl_CapitalInvestmentSpendOnFY2026ElectricISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_CapitalInvestmentSpendOnFY2026ElectricISRPlan_019c368e-fd98-4eb8-8158-3018f1cd80d1" xlink:type="arc" order="68"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TotalCapitalInvestmentSpendOnFY2026ElectricISRPlan_4da77da4-34a9-4330-bd95-f271bb95caeb" xlink:href="ppl-20250630.xsd#ppl_TotalCapitalInvestmentSpendOnFY2026ElectricISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_TotalCapitalInvestmentSpendOnFY2026ElectricISRPlan_4da77da4-34a9-4330-bd95-f271bb95caeb" xlink:type="arc" order="69"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CPCNNGCCGenerationUnit_ca3a91a2-8055-44ba-85ae-51aa335a0851" xlink:href="ppl-20250630.xsd#ppl_CPCNNGCCGenerationUnit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_CPCNNGCCGenerationUnit_ca3a91a2-8055-44ba-85ae-51aa335a0851" xlink:type="arc" order="70"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BESSLGEPlannedOwnershipPercentage_d2e97b2d-8a85-41d8-9270-1875849c0879" xlink:href="ppl-20250630.xsd#ppl_BESSLGEPlannedOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_BESSLGEPlannedOwnershipPercentage_d2e97b2d-8a85-41d8-9270-1875849c0879" xlink:type="arc" order="71"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BESSKUPlannedOwnershipPercentage_87d7327f-237e-4d90-9148-40b1ee51530a" xlink:href="ppl-20250630.xsd#ppl_BESSKUPlannedOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_BESSKUPlannedOwnershipPercentage_87d7327f-237e-4d90-9148-40b1ee51530a" xlink:type="arc" order="72"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CPCNAggregateProjectedCapitalExpenditures20252031_a0e58496-ebcc-4401-976e-51f85bb5e220" xlink:href="ppl-20250630.xsd#ppl_CPCNAggregateProjectedCapitalExpenditures20252031"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_CPCNAggregateProjectedCapitalExpenditures20252031_a0e58496-ebcc-4401-976e-51f85bb5e220" xlink:type="arc" order="73"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CPCNBatteryStorageFacility_5ff84c4d-952e-4b77-af7e-bb182a570dfd" xlink:href="ppl-20250630.xsd#ppl_CPCNBatteryStorageFacility"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_CPCNBatteryStorageFacility_5ff84c4d-952e-4b77-af7e-bb182a570dfd" xlink:type="arc" order="74"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TotalApprovedSpendOnFY2026GasISRPlan_0fad1d4a-11f1-47ce-bcfe-a8f0111acf7b" xlink:href="ppl-20250630.xsd#ppl_TotalApprovedSpendOnFY2026GasISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_TotalApprovedSpendOnFY2026GasISRPlan_0fad1d4a-11f1-47ce-bcfe-a8f0111acf7b" xlink:type="arc" order="75"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ApprovedCapitalInvestmentSpendOnFY2026ElectricISRPlan_ae561b57-231c-4b7b-bfb9-20aacd201600" xlink:href="ppl-20250630.xsd#ppl_ApprovedCapitalInvestmentSpendOnFY2026ElectricISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_ApprovedCapitalInvestmentSpendOnFY2026ElectricISRPlan_ae561b57-231c-4b7b-bfb9-20aacd201600" xlink:type="arc" order="76"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TotalApprovedSpendOnFY2026GasISRPlan_f0b06e86-1105-48d2-8fff-4310191b6dbf" xlink:href="ppl-20250630.xsd#ppl_TotalApprovedSpendOnFY2026GasISRPlan"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ApprovedContingencyPlanSpendOnFY2026GasISRPlan_5763bbbe-2ce3-47bc-a087-dfbd6ee81ecd" xlink:href="ppl-20250630.xsd#ppl_ApprovedContingencyPlanSpendOnFY2026GasISRPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_ApprovedContingencyPlanSpendOnFY2026GasISRPlan_5763bbbe-2ce3-47bc-a087-dfbd6ee81ecd" xlink:type="arc" order="78"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount_0288fd7c-351c-40f3-8633-be26584000dc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount_0288fd7c-351c-40f3-8633-be26584000dc" xlink:type="arc" order="79"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreasePercentage_0814f896-790c-41da-bcd1-0c34e858f94c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PublicUtilitiesRequestedRateIncreaseDecreasePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreasePercentage_0814f896-790c-41da-bcd1-0c34e858f94c" xlink:type="arc" order="80"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesRequestedReturnOnEquityPercentage_baceb788-8e0b-4041-a215-dc66378f8eec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PublicUtilitiesRequestedReturnOnEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_us-gaap_PublicUtilitiesRequestedReturnOnEquityPercentage_baceb788-8e0b-4041-a215-dc66378f8eec" xlink:type="arc" order="81"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NetPresentValueOfHoldHarmlessObligation_075581a3-67b6-447f-8916-699d35992638" xlink:href="ppl-20250630.xsd#ppl_NetPresentValueOfHoldHarmlessObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryMattersLineItems_77d4bea9-9a1b-46df-8368-b1a20c0f5cc6" xlink:to="loc_ppl_NetPresentValueOfHoldHarmlessObligation_075581a3-67b6-447f-8916-699d35992638" xlink:type="arc" order="82"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/UtilityRateRegulationOtherDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#UtilityRateRegulationOtherDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/UtilityRateRegulationOtherDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PurchasesOfAccountsReceivableLineItems_379b7d78-77b1-4146-80f2-3b8754450cda" xlink:href="ppl-20250630.xsd#ppl_PurchasesOfAccountsReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PurchasesOfAccountsReceivableTable_f91afada-40a1-4f03-ba04-84d8cfbff1e9" xlink:href="ppl-20250630.xsd#ppl_PurchasesOfAccountsReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_PurchasesOfAccountsReceivableLineItems_379b7d78-77b1-4146-80f2-3b8754450cda" xlink:to="loc_ppl_PurchasesOfAccountsReceivableTable_f91afada-40a1-4f03-ba04-84d8cfbff1e9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_dc13a99e-a589-4cf7-8fa1-4fc65e51be1a" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_PurchasesOfAccountsReceivableTable_f91afada-40a1-4f03-ba04-84d8cfbff1e9" xlink:to="loc_dei_LegalEntityAxis_dc13a99e-a589-4cf7-8fa1-4fc65e51be1a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_dc13a99e-a589-4cf7-8fa1-4fc65e51be1a_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_dc13a99e-a589-4cf7-8fa1-4fc65e51be1a" xlink:to="loc_dei_EntityDomain_dc13a99e-a589-4cf7-8fa1-4fc65e51be1a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_561412ed-5721-4467-b0da-760fbee6169f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_dc13a99e-a589-4cf7-8fa1-4fc65e51be1a" xlink:to="loc_dei_EntityDomain_561412ed-5721-4467-b0da-760fbee6169f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_9e1ad9ce-7351-47d8-9330-ccde6df86a05" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_561412ed-5721-4467-b0da-760fbee6169f" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_9e1ad9ce-7351-47d8-9330-ccde6df86a05" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_69ad9660-1ba2-4c27-904b-e6acd4870fe0" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_PurchasesOfAccountsReceivableTable_f91afada-40a1-4f03-ba04-84d8cfbff1e9" xlink:to="loc_ppl_ByCompanyAxis_69ad9660-1ba2-4c27-904b-e6acd4870fe0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_69ad9660-1ba2-4c27-904b-e6acd4870fe0_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_69ad9660-1ba2-4c27-904b-e6acd4870fe0" xlink:to="loc_ppl_ByCompanyDomain_69ad9660-1ba2-4c27-904b-e6acd4870fe0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_604389b5-6464-4767-a28b-264d084f34c1" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_69ad9660-1ba2-4c27-904b-e6acd4870fe0" xlink:to="loc_ppl_ByCompanyDomain_604389b5-6464-4767-a28b-264d084f34c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorporationMember_c3b73882-1666-411d-9d15-734df6cfff33" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_604389b5-6464-4767-a28b-264d084f34c1" xlink:to="loc_ppl_PplElectricUtilitiesCorporationMember_c3b73882-1666-411d-9d15-734df6cfff33" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandEnergyMember_cfdfa9aa-49b1-4280-8ae4-ddf71382d093" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandEnergyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_604389b5-6464-4767-a28b-264d084f34c1" xlink:to="loc_ppl_RhodeIslandEnergyMember_cfdfa9aa-49b1-4280-8ae4-ddf71382d093" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_a3521c55-7e36-4592-8ddf-9e817d1adee2" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_PurchasesOfAccountsReceivableTable_f91afada-40a1-4f03-ba04-84d8cfbff1e9" xlink:to="loc_srt_CounterpartyNameAxis_a3521c55-7e36-4592-8ddf-9e817d1adee2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_a3521c55-7e36-4592-8ddf-9e817d1adee2_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_a3521c55-7e36-4592-8ddf-9e817d1adee2" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_a3521c55-7e36-4592-8ddf-9e817d1adee2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9b1f0070-4893-41a9-8f82-a453c317c28a" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_a3521c55-7e36-4592-8ddf-9e817d1adee2" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9b1f0070-4893-41a9-8f82-a453c317c28a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_UnaffiliatedThirdPartyEntityMember_5e00bbd0-221e-4141-97f6-bceb6f1a846c" xlink:href="ppl-20250630.xsd#ppl_UnaffiliatedThirdPartyEntityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9b1f0070-4893-41a9-8f82-a453c317c28a" xlink:to="loc_ppl_UnaffiliatedThirdPartyEntityMember_5e00bbd0-221e-4141-97f6-bceb6f1a846c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PeriodOfROEReserveAxis_773d73d7-c2cf-44b1-83bf-d811fadd4d1f" xlink:href="ppl-20250630.xsd#ppl_PeriodOfROEReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_PurchasesOfAccountsReceivableTable_f91afada-40a1-4f03-ba04-84d8cfbff1e9" xlink:to="loc_ppl_PeriodOfROEReserveAxis_773d73d7-c2cf-44b1-83bf-d811fadd4d1f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PeriodOfROEReserveDomain_773d73d7-c2cf-44b1-83bf-d811fadd4d1f_default" xlink:href="ppl-20250630.xsd#ppl_PeriodOfROEReserveDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_PeriodOfROEReserveAxis_773d73d7-c2cf-44b1-83bf-d811fadd4d1f" xlink:to="loc_ppl_PeriodOfROEReserveDomain_773d73d7-c2cf-44b1-83bf-d811fadd4d1f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PeriodOfROEReserveDomain_a69f97ec-5d6a-4ef4-9c88-54e1d6a1afad" xlink:href="ppl-20250630.xsd#ppl_PeriodOfROEReserveDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_PeriodOfROEReserveAxis_773d73d7-c2cf-44b1-83bf-d811fadd4d1f" xlink:to="loc_ppl_PeriodOfROEReserveDomain_a69f97ec-5d6a-4ef4-9c88-54e1d6a1afad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PeriodOf05212020To12312020Member_0185d914-ef16-4ae1-aec4-686fab1e76c3" xlink:href="ppl-20250630.xsd#ppl_PeriodOf05212020To12312020Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_PeriodOfROEReserveDomain_a69f97ec-5d6a-4ef4-9c88-54e1d6a1afad" xlink:to="loc_ppl_PeriodOf05212020To12312020Member_0185d914-ef16-4ae1-aec4-686fab1e76c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyAxis_a5690d53-b134-4803-a83c-01ff80be5201" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAgencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_PurchasesOfAccountsReceivableTable_f91afada-40a1-4f03-ba04-84d8cfbff1e9" xlink:to="loc_us-gaap_RegulatoryAgencyAxis_a5690d53-b134-4803-a83c-01ff80be5201" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_a5690d53-b134-4803-a83c-01ff80be5201_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_a5690d53-b134-4803-a83c-01ff80be5201" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_a5690d53-b134-4803-a83c-01ff80be5201_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_6f61f7de-691f-4fdb-a55e-47c27cafda91" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_a5690d53-b134-4803-a83c-01ff80be5201" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_6f61f7de-691f-4fdb-a55e-47c27cafda91" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FederalEnergyRegulatoryCommissionMember_76e93287-697c-430f-8a8f-05919a59260a" xlink:href="ppl-20250630.xsd#ppl_FederalEnergyRegulatoryCommissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_6f61f7de-691f-4fdb-a55e-47c27cafda91" xlink:to="loc_ppl_FederalEnergyRegulatoryCommissionMember_76e93287-697c-430f-8a8f-05919a59260a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PurchasesOfAccountsReceivable_6a81d35b-8b3d-418d-9788-b9b2af0684c4" xlink:href="ppl-20250630.xsd#ppl_PurchasesOfAccountsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_PurchasesOfAccountsReceivableLineItems_379b7d78-77b1-4146-80f2-3b8754450cda" xlink:to="loc_ppl_PurchasesOfAccountsReceivable_6a81d35b-8b3d-418d-9788-b9b2af0684c4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivablePurchase_1fec444d-d35c-4e2a-bcbe-728c2c51ab2d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivablePurchase"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_PurchasesOfAccountsReceivableLineItems_379b7d78-77b1-4146-80f2-3b8754450cda" xlink:to="loc_us-gaap_AccountsReceivablePurchase_1fec444d-d35c-4e2a-bcbe-728c2c51ab2d" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/FinancingActivitiesCreditArrangementsDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#FinancingActivitiesCreditArrangementsDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/FinancingActivitiesCreditArrangementsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_569ce4cf-1536-4d6c-ac07-769bd0d8f80a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_fa9db721-566a-4092-ad1a-a5866a5739b4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_569ce4cf-1536-4d6c-ac07-769bd0d8f80a" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_fa9db721-566a-4092-ad1a-a5866a5739b4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_c06f2c25-1ae5-4cba-825e-0eb666906302" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_fa9db721-566a-4092-ad1a-a5866a5739b4" xlink:to="loc_dei_LegalEntityAxis_c06f2c25-1ae5-4cba-825e-0eb666906302" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_c06f2c25-1ae5-4cba-825e-0eb666906302_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_c06f2c25-1ae5-4cba-825e-0eb666906302" xlink:to="loc_dei_EntityDomain_c06f2c25-1ae5-4cba-825e-0eb666906302_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_88821350-91ed-45ce-926f-6434d382eecc" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_c06f2c25-1ae5-4cba-825e-0eb666906302" xlink:to="loc_dei_EntityDomain_88821350-91ed-45ce-926f-6434d382eecc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_4026071e-83fb-48cc-8855-3988e39f10b6" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_88821350-91ed-45ce-926f-6434d382eecc" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_4026071e-83fb-48cc-8855-3988e39f10b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_ca9a78be-8ffc-4847-b70a-037a066e7963" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_88821350-91ed-45ce-926f-6434d382eecc" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_ca9a78be-8ffc-4847-b70a-037a066e7963" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_f0670450-0653-408f-a30a-3f05d34a5ee1" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_88821350-91ed-45ce-926f-6434d382eecc" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_f0670450-0653-408f-a30a-3f05d34a5ee1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_179b9ca4-3ab7-4895-b658-db618c43ac15" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_fa9db721-566a-4092-ad1a-a5866a5739b4" xlink:to="loc_ppl_ByCompanyAxis_179b9ca4-3ab7-4895-b658-db618c43ac15" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_179b9ca4-3ab7-4895-b658-db618c43ac15_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_179b9ca4-3ab7-4895-b658-db618c43ac15" xlink:to="loc_ppl_ByCompanyDomain_179b9ca4-3ab7-4895-b658-db618c43ac15_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_5c91493a-8bca-40f3-8dda-4738c526682b" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_179b9ca4-3ab7-4895-b658-db618c43ac15" xlink:to="loc_ppl_ByCompanyDomain_5c91493a-8bca-40f3-8dda-4738c526682b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplCapitalFundingMember_cb76e49c-f585-4e6e-93bb-b5e470775b67" xlink:href="ppl-20250630.xsd#ppl_PplCapitalFundingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_5c91493a-8bca-40f3-8dda-4738c526682b" xlink:to="loc_ppl_PplCapitalFundingMember_cb76e49c-f585-4e6e-93bb-b5e470775b67" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorporationMember_7d68bd21-11fd-456e-9ae0-df97c25253b2" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_5c91493a-8bca-40f3-8dda-4738c526682b" xlink:to="loc_ppl_PplElectricUtilitiesCorporationMember_7d68bd21-11fd-456e-9ae0-df97c25253b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_b0a3a558-82ad-45e7-9340-3e730df9b4e2" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_5c91493a-8bca-40f3-8dda-4738c526682b" xlink:to="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_b0a3a558-82ad-45e7-9340-3e730df9b4e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_f1f7ebbd-d3e1-4213-b711-94c5ef023995" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_5c91493a-8bca-40f3-8dda-4738c526682b" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_f1f7ebbd-d3e1-4213-b711-94c5ef023995" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCompanyMember_8c5f98fc-8194-41d7-9b8a-39091c003f0d" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_5c91493a-8bca-40f3-8dda-4738c526682b" xlink:to="loc_ppl_KentuckyUtilitiesCompanyMember_8c5f98fc-8194-41d7-9b8a-39091c003f0d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandEnergyMember_a69e6a35-c40b-4bdf-acec-682ccf58b3b6" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandEnergyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_5c91493a-8bca-40f3-8dda-4738c526682b" xlink:to="loc_ppl_RhodeIslandEnergyMember_a69e6a35-c40b-4bdf-acec-682ccf58b3b6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_fe09853b-a541-42bb-a876-36e948661ccb" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_fa9db721-566a-4092-ad1a-a5866a5739b4" xlink:to="loc_srt_StatementGeographicalAxis_fe09853b-a541-42bb-a876-36e948661ccb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_fe09853b-a541-42bb-a876-36e948661ccb_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_fe09853b-a541-42bb-a876-36e948661ccb" xlink:to="loc_srt_SegmentGeographicalDomain_fe09853b-a541-42bb-a876-36e948661ccb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_6d9038d9-000d-4324-941d-d900fb1429d3" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_fe09853b-a541-42bb-a876-36e948661ccb" xlink:to="loc_srt_SegmentGeographicalDomain_6d9038d9-000d-4324-941d-d900fb1429d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_f5c577f0-2885-4503-8dfb-f1ce1fd76e39" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_6d9038d9-000d-4324-941d-d900fb1429d3" xlink:to="loc_country_US_f5c577f0-2885-4503-8dfb-f1ce1fd76e39" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CreditFacilityDescriptionAxis_87a52fac-11fb-4ca6-9ebb-07d31e4ff91c" xlink:href="ppl-20250630.xsd#ppl_CreditFacilityDescriptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_fa9db721-566a-4092-ad1a-a5866a5739b4" xlink:to="loc_ppl_CreditFacilityDescriptionAxis_87a52fac-11fb-4ca6-9ebb-07d31e4ff91c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CreditFacilityDescriptionDomain_87a52fac-11fb-4ca6-9ebb-07d31e4ff91c_default" xlink:href="ppl-20250630.xsd#ppl_CreditFacilityDescriptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_CreditFacilityDescriptionAxis_87a52fac-11fb-4ca6-9ebb-07d31e4ff91c" xlink:to="loc_ppl_CreditFacilityDescriptionDomain_87a52fac-11fb-4ca6-9ebb-07d31e4ff91c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CreditFacilityDescriptionDomain_caefba12-f25e-4d6d-bd8b-e372b25e8f52" xlink:href="ppl-20250630.xsd#ppl_CreditFacilityDescriptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_CreditFacilityDescriptionAxis_87a52fac-11fb-4ca6-9ebb-07d31e4ff91c" xlink:to="loc_ppl_CreditFacilityDescriptionDomain_caefba12-f25e-4d6d-bd8b-e372b25e8f52" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SyndicatedCreditFacilityMember_b91637df-9c6e-425c-8f29-d7c60daac5a9" xlink:href="ppl-20250630.xsd#ppl_SyndicatedCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_caefba12-f25e-4d6d-bd8b-e372b25e8f52" xlink:to="loc_ppl_SyndicatedCreditFacilityMember_b91637df-9c6e-425c-8f29-d7c60daac5a9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_UncommittedCreditFacilitiesMember_cdccb79f-9949-4dd5-baa6-ad6329caaf0d" xlink:href="ppl-20250630.xsd#ppl_UncommittedCreditFacilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_caefba12-f25e-4d6d-bd8b-e372b25e8f52" xlink:to="loc_ppl_UncommittedCreditFacilitiesMember_cdccb79f-9949-4dd5-baa6-ad6329caaf0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TermLoanFacilityMember_80d9a064-20a1-4819-b416-7913de25852f" xlink:href="ppl-20250630.xsd#ppl_TermLoanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_caefba12-f25e-4d6d-bd8b-e372b25e8f52" xlink:to="loc_ppl_TermLoanFacilityMember_80d9a064-20a1-4819-b416-7913de25852f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_fddf45cc-a525-4725-9a0c-55f419c6135d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_caefba12-f25e-4d6d-bd8b-e372b25e8f52" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_fddf45cc-a525-4725-9a0c-55f419c6135d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BilateralCreditFacilityMember_aa9f742f-a7a8-4fe0-b137-e54882d2a0ad" xlink:href="ppl-20250630.xsd#ppl_BilateralCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_caefba12-f25e-4d6d-bd8b-e372b25e8f52" xlink:to="loc_ppl_BilateralCreditFacilityMember_aa9f742f-a7a8-4fe0-b137-e54882d2a0ad" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BilateralCreditFacility2Member_00418ef8-35b6-4e1f-a80f-ba7037186101" xlink:href="ppl-20250630.xsd#ppl_BilateralCreditFacility2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_caefba12-f25e-4d6d-bd8b-e372b25e8f52" xlink:to="loc_ppl_BilateralCreditFacility2Member_00418ef8-35b6-4e1f-a80f-ba7037186101" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_5e5fed82-df93-443f-a024-20d6759ba5a5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_fa9db721-566a-4092-ad1a-a5866a5739b4" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_5e5fed82-df93-443f-a024-20d6759ba5a5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_5e5fed82-df93-443f-a024-20d6759ba5a5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_5e5fed82-df93-443f-a024-20d6759ba5a5" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_5e5fed82-df93-443f-a024-20d6759ba5a5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_59222656-278b-412d-8f04-e873ed9a062a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_5e5fed82-df93-443f-a024-20d6759ba5a5" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_59222656-278b-412d-8f04-e873ed9a062a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_60675361-ecc7-4808-9d68-0aac1c75b6a8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_59222656-278b-412d-8f04-e873ed9a062a" xlink:to="loc_us-gaap_SubsequentEventMember_60675361-ecc7-4808-9d68-0aac1c75b6a8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LoCBeneficiaryAxis_7360c9cc-9b43-4ac0-a987-78b5ef00ff5d" xlink:href="ppl-20250630.xsd#ppl_LoCBeneficiaryAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_fa9db721-566a-4092-ad1a-a5866a5739b4" xlink:to="loc_ppl_LoCBeneficiaryAxis_7360c9cc-9b43-4ac0-a987-78b5ef00ff5d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LoCBeneficiaryDomain_7360c9cc-9b43-4ac0-a987-78b5ef00ff5d_default" xlink:href="ppl-20250630.xsd#ppl_LoCBeneficiaryDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_LoCBeneficiaryAxis_7360c9cc-9b43-4ac0-a987-78b5ef00ff5d" xlink:to="loc_ppl_LoCBeneficiaryDomain_7360c9cc-9b43-4ac0-a987-78b5ef00ff5d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LoCBeneficiaryDomain_1ccb1138-df3a-4490-9816-3ca325ca0e23" xlink:href="ppl-20250630.xsd#ppl_LoCBeneficiaryDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_LoCBeneficiaryAxis_7360c9cc-9b43-4ac0-a987-78b5ef00ff5d" xlink:to="loc_ppl_LoCBeneficiaryDomain_1ccb1138-df3a-4490-9816-3ca325ca0e23" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandEnergyMember_b97709c0-f2bd-453c-9415-5214270200ae" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandEnergyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LoCBeneficiaryDomain_1ccb1138-df3a-4490-9816-3ca325ca0e23" xlink:to="loc_ppl_RhodeIslandEnergyMember_b97709c0-f2bd-453c-9415-5214270200ae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_dda7c36c-52ec-4b64-ae3b-165e0b42f8f7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_fa9db721-566a-4092-ad1a-a5866a5739b4" xlink:to="loc_us-gaap_ShortTermDebtTypeAxis_dda7c36c-52ec-4b64-ae3b-165e0b42f8f7" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_dda7c36c-52ec-4b64-ae3b-165e0b42f8f7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_dda7c36c-52ec-4b64-ae3b-165e0b42f8f7" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_dda7c36c-52ec-4b64-ae3b-165e0b42f8f7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_f1767b68-01bb-409e-8f1d-369031141ec3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_dda7c36c-52ec-4b64-ae3b-165e0b42f8f7" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_f1767b68-01bb-409e-8f1d-369031141ec3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaperMember_1c0dbd43-c24c-40b0-9cf3-f7215e2e069f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommercialPaperMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_f1767b68-01bb-409e-8f1d-369031141ec3" xlink:to="loc_us-gaap_CommercialPaperMember_1c0dbd43-c24c-40b0-9cf3-f7215e2e069f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_36d9fc29-ce20-4ebf-967a-5c512efaaab6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_569ce4cf-1536-4d6c-ac07-769bd0d8f80a" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_36d9fc29-ce20-4ebf-967a-5c512efaaab6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_09b8a836-b0c6-44f5-9247-85cf5ddb8906" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_569ce4cf-1536-4d6c-ac07-769bd0d8f80a" xlink:to="loc_us-gaap_LineOfCredit_09b8a836-b0c6-44f5-9247-85cf5ddb8906" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LineOfCreditFacilityAmountOfLettersOfCreditAndCommercialPaperIssued_5db6f3e9-7cc2-4fd8-b25f-5d0fbcc9e2f8" xlink:href="ppl-20250630.xsd#ppl_LineOfCreditFacilityAmountOfLettersOfCreditAndCommercialPaperIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_569ce4cf-1536-4d6c-ac07-769bd0d8f80a" xlink:to="loc_ppl_LineOfCreditFacilityAmountOfLettersOfCreditAndCommercialPaperIssued_5db6f3e9-7cc2-4fd8-b25f-5d0fbcc9e2f8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_709dbd7f-5073-4043-9175-01b2705eee89" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_569ce4cf-1536-4d6c-ac07-769bd0d8f80a" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_709dbd7f-5073-4043-9175-01b2705eee89" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd_51759b2c-ceca-4476-b9eb-128c90a3372c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_569ce4cf-1536-4d6c-ac07-769bd0d8f80a" xlink:to="loc_us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd_51759b2c-ceca-4476-b9eb-128c90a3372c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LineOfCredit1_f41fe9f9-704a-458e-bff2-1094a959d792" xlink:href="ppl-20250630.xsd#ppl_LineOfCredit1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_569ce4cf-1536-4d6c-ac07-769bd0d8f80a" xlink:to="loc_ppl_LineOfCredit1_f41fe9f9-704a-458e-bff2-1094a959d792" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_b9fe0e97-d9d0-48f4-b36f-f520e98dc0b8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_569ce4cf-1536-4d6c-ac07-769bd0d8f80a" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_b9fe0e97-d9d0-48f4-b36f-f520e98dc0b8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LineOfCreditFacilityBorrowingCapacitySublimit_66b680f3-fe86-475b-b7fb-8864afdc94b2" xlink:href="ppl-20250630.xsd#ppl_LineOfCreditFacilityBorrowingCapacitySublimit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_569ce4cf-1536-4d6c-ac07-769bd0d8f80a" xlink:to="loc_ppl_LineOfCreditFacilityBorrowingCapacitySublimit_66b680f3-fe86-475b-b7fb-8864afdc94b2" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaper_d16153b3-330c-4e1f-b60e-52f96546acd2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommercialPaper"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_569ce4cf-1536-4d6c-ac07-769bd0d8f80a" xlink:to="loc_us-gaap_CommercialPaper_d16153b3-330c-4e1f-b60e-52f96546acd2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LineOfCreditFacilityBorrowingCapacitySublimitMaximum_8569e57d-7215-4c09-b40f-9dcc7a5bd550" xlink:href="ppl-20250630.xsd#ppl_LineOfCreditFacilityBorrowingCapacitySublimitMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_569ce4cf-1536-4d6c-ac07-769bd0d8f80a" xlink:to="loc_ppl_LineOfCreditFacilityBorrowingCapacitySublimitMaximum_8569e57d-7215-4c09-b40f-9dcc7a5bd550" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ShortTermDebtMaximumBorrowingCapacity_4909e03d-d240-4876-b202-68cd3935cff3" xlink:href="ppl-20250630.xsd#ppl_ShortTermDebtMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_569ce4cf-1536-4d6c-ac07-769bd0d8f80a" xlink:to="loc_ppl_ShortTermDebtMaximumBorrowingCapacity_4909e03d-d240-4876-b202-68cd3935cff3" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/FinancingActivitiesShorttermDebtDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#FinancingActivitiesShorttermDebtDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/FinancingActivitiesShorttermDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtLineItems_692b87d5-bf2f-4913-ad6f-0bcb60e4802e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermDebtLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShortTermDebtTable_474bb21f-fb7f-4914-80dd-52edffdaf1d0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShortTermDebtTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShortTermDebtLineItems_692b87d5-bf2f-4913-ad6f-0bcb60e4802e" xlink:to="loc_us-gaap_ScheduleOfShortTermDebtTable_474bb21f-fb7f-4914-80dd-52edffdaf1d0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_a1129a06-704e-4c36-9862-71fb21b47cff" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_474bb21f-fb7f-4914-80dd-52edffdaf1d0" xlink:to="loc_dei_LegalEntityAxis_a1129a06-704e-4c36-9862-71fb21b47cff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a1129a06-704e-4c36-9862-71fb21b47cff_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_a1129a06-704e-4c36-9862-71fb21b47cff" xlink:to="loc_dei_EntityDomain_a1129a06-704e-4c36-9862-71fb21b47cff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e2d89355-a396-4ae0-baf2-d7eb665de5dd" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_a1129a06-704e-4c36-9862-71fb21b47cff" xlink:to="loc_dei_EntityDomain_e2d89355-a396-4ae0-baf2-d7eb665de5dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_80d4abc0-e93a-4c6c-8473-e96611338be1" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_e2d89355-a396-4ae0-baf2-d7eb665de5dd" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_80d4abc0-e93a-4c6c-8473-e96611338be1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_19ae7820-792e-4b21-9e43-a34a061024c0" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_e2d89355-a396-4ae0-baf2-d7eb665de5dd" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_19ae7820-792e-4b21-9e43-a34a061024c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_57da759d-295e-4ee4-b8e1-a4a01c840005" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_e2d89355-a396-4ae0-baf2-d7eb665de5dd" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_57da759d-295e-4ee4-b8e1-a4a01c840005" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_3f02cc11-bb2d-412a-a800-934042351f82" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_474bb21f-fb7f-4914-80dd-52edffdaf1d0" xlink:to="loc_ppl_ByCompanyAxis_3f02cc11-bb2d-412a-a800-934042351f82" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_3f02cc11-bb2d-412a-a800-934042351f82_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_3f02cc11-bb2d-412a-a800-934042351f82" xlink:to="loc_ppl_ByCompanyDomain_3f02cc11-bb2d-412a-a800-934042351f82_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_32a7c5c6-2c5a-417a-8d26-10ba98fafcd8" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_3f02cc11-bb2d-412a-a800-934042351f82" xlink:to="loc_ppl_ByCompanyDomain_32a7c5c6-2c5a-417a-8d26-10ba98fafcd8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplCapitalFundingMember_e2d7dfba-13d6-41bb-90c3-d94d53a2191d" xlink:href="ppl-20250630.xsd#ppl_PplCapitalFundingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_32a7c5c6-2c5a-417a-8d26-10ba98fafcd8" xlink:to="loc_ppl_PplCapitalFundingMember_e2d7dfba-13d6-41bb-90c3-d94d53a2191d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorporationMember_16bfdea3-aed3-4877-8e81-e68e8a99c455" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_32a7c5c6-2c5a-417a-8d26-10ba98fafcd8" xlink:to="loc_ppl_PplElectricUtilitiesCorporationMember_16bfdea3-aed3-4877-8e81-e68e8a99c455" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_69c24888-1a1f-4c90-afa7-3de08f015f87" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_32a7c5c6-2c5a-417a-8d26-10ba98fafcd8" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_69c24888-1a1f-4c90-afa7-3de08f015f87" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCompanyMember_2d75a47d-7662-4406-bf9d-214df7e251c1" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_32a7c5c6-2c5a-417a-8d26-10ba98fafcd8" xlink:to="loc_ppl_KentuckyUtilitiesCompanyMember_2d75a47d-7662-4406-bf9d-214df7e251c1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandEnergyMember_c08fde58-ac2f-4379-9509-6e82b60e9bfe" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandEnergyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_32a7c5c6-2c5a-417a-8d26-10ba98fafcd8" xlink:to="loc_ppl_RhodeIslandEnergyMember_c08fde58-ac2f-4379-9509-6e82b60e9bfe" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_ed0ef58b-a549-4b12-9d27-44a48d21178f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_474bb21f-fb7f-4914-80dd-52edffdaf1d0" xlink:to="loc_us-gaap_ShortTermDebtTypeAxis_ed0ef58b-a549-4b12-9d27-44a48d21178f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_ed0ef58b-a549-4b12-9d27-44a48d21178f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_ed0ef58b-a549-4b12-9d27-44a48d21178f" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_ed0ef58b-a549-4b12-9d27-44a48d21178f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_ada7b9e3-4a8f-42c6-8f9c-3ee4da206360" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_ed0ef58b-a549-4b12-9d27-44a48d21178f" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_ada7b9e3-4a8f-42c6-8f9c-3ee4da206360" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaperMember_3a952a01-d33c-41cd-a79f-5e42b17622fa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommercialPaperMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_ada7b9e3-4a8f-42c6-8f9c-3ee4da206360" xlink:to="loc_us-gaap_CommercialPaperMember_3a952a01-d33c-41cd-a79f-5e42b17622fa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReclassifiedDebtAxis_f45392bd-0721-4259-9a0c-08b4d1633186" xlink:href="ppl-20250630.xsd#ppl_ReclassifiedDebtAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_474bb21f-fb7f-4914-80dd-52edffdaf1d0" xlink:to="loc_ppl_ReclassifiedDebtAxis_f45392bd-0721-4259-9a0c-08b4d1633186" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReclassifiedDebtDomain_f45392bd-0721-4259-9a0c-08b4d1633186_default" xlink:href="ppl-20250630.xsd#ppl_ReclassifiedDebtDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ReclassifiedDebtAxis_f45392bd-0721-4259-9a0c-08b4d1633186" xlink:to="loc_ppl_ReclassifiedDebtDomain_f45392bd-0721-4259-9a0c-08b4d1633186_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReclassifiedDebtDomain_803c4bff-476a-4c64-bb74-b5c410394012" xlink:href="ppl-20250630.xsd#ppl_ReclassifiedDebtDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ReclassifiedDebtAxis_f45392bd-0721-4259-9a0c-08b4d1633186" xlink:to="loc_ppl_ReclassifiedDebtDomain_803c4bff-476a-4c64-bb74-b5c410394012" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaperMember_97413cc9-e4b2-453b-a6c5-f212a3af7cf0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommercialPaperMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ReclassifiedDebtDomain_803c4bff-476a-4c64-bb74-b5c410394012" xlink:to="loc_us-gaap_CommercialPaperMember_97413cc9-e4b2-453b-a6c5-f212a3af7cf0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_4e9332dc-8b7b-4eb8-8d7a-06c458cf662f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_474bb21f-fb7f-4914-80dd-52edffdaf1d0" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_4e9332dc-8b7b-4eb8-8d7a-06c458cf662f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_4e9332dc-8b7b-4eb8-8d7a-06c458cf662f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_4e9332dc-8b7b-4eb8-8d7a-06c458cf662f" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_4e9332dc-8b7b-4eb8-8d7a-06c458cf662f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_4fb97f0b-04ba-4d25-ba82-477682a97813" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_4e9332dc-8b7b-4eb8-8d7a-06c458cf662f" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_4fb97f0b-04ba-4d25-ba82-477682a97813" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_cab61d45-fce9-4c3a-b929-721bc93fe32f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_4fb97f0b-04ba-4d25-ba82-477682a97813" xlink:to="loc_us-gaap_SeniorNotesMember_cab61d45-fce9-4c3a-b929-721bc93fe32f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtWeightedAverageInterestRate_1da62f70-a7dd-4ef3-a79b-8f973959fd12" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermDebtWeightedAverageInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_692b87d5-bf2f-4913-ad6f-0bcb60e4802e" xlink:to="loc_us-gaap_ShortTermDebtWeightedAverageInterestRate_1da62f70-a7dd-4ef3-a79b-8f973959fd12" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ShortTermDebtMaximumBorrowingCapacity_4fb3c51a-de7e-4485-9add-2d7caf5ce5c3" xlink:href="ppl-20250630.xsd#ppl_ShortTermDebtMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_692b87d5-bf2f-4913-ad6f-0bcb60e4802e" xlink:to="loc_ppl_ShortTermDebtMaximumBorrowingCapacity_4fb3c51a-de7e-4485-9add-2d7caf5ce5c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaper_e5dec986-b5e7-47af-bda7-d05c7ecc595a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommercialPaper"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_692b87d5-bf2f-4913-ad6f-0bcb60e4802e" xlink:to="loc_us-gaap_CommercialPaper_e5dec986-b5e7-47af-bda7-d05c7ecc595a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CommercialPaperUnusedBorrowingCapacityAmount_d56dfd7b-3b5f-43be-9cc2-4cc29d3558fe" xlink:href="ppl-20250630.xsd#ppl_CommercialPaperUnusedBorrowingCapacityAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_692b87d5-bf2f-4913-ad6f-0bcb60e4802e" xlink:to="loc_ppl_CommercialPaperUnusedBorrowingCapacityAmount_d56dfd7b-3b5f-43be-9cc2-4cc29d3558fe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_f39787c8-bf84-474f-8ab0-a47c2d7ed2c8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_692b87d5-bf2f-4913-ad6f-0bcb60e4802e" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_f39787c8-bf84-474f-8ab0-a47c2d7ed2c8" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/FinancingActivitiesLongtermDebtDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#FinancingActivitiesLongtermDebtDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/FinancingActivitiesLongtermDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_1648b9ab-5bc6-4257-80f3-3b7ffaf6ec7e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_DebtInstrumentTable_1648b9ab-5bc6-4257-80f3-3b7ffaf6ec7e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_b3f9beb6-ba2c-476b-a276-6331f7ea9110" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1648b9ab-5bc6-4257-80f3-3b7ffaf6ec7e" xlink:to="loc_dei_LegalEntityAxis_b3f9beb6-ba2c-476b-a276-6331f7ea9110" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b3f9beb6-ba2c-476b-a276-6331f7ea9110_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_b3f9beb6-ba2c-476b-a276-6331f7ea9110" xlink:to="loc_dei_EntityDomain_b3f9beb6-ba2c-476b-a276-6331f7ea9110_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b08ab14f-79ef-4325-8921-acfcb4bdaf09" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_b3f9beb6-ba2c-476b-a276-6331f7ea9110" xlink:to="loc_dei_EntityDomain_b08ab14f-79ef-4325-8921-acfcb4bdaf09" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_e37514f5-4058-44c5-9f16-c6140cf78cc6" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_b08ab14f-79ef-4325-8921-acfcb4bdaf09" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_e37514f5-4058-44c5-9f16-c6140cf78cc6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_0f1ade7f-6b6b-4fa9-889e-a386b2d78b02" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_b08ab14f-79ef-4325-8921-acfcb4bdaf09" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_0f1ade7f-6b6b-4fa9-889e-a386b2d78b02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_e090ea91-0a85-47f7-a4d3-3f45ef78e0f0" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_b08ab14f-79ef-4325-8921-acfcb4bdaf09" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_e090ea91-0a85-47f7-a4d3-3f45ef78e0f0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCompanyMember_827321c4-815d-40b5-940e-a44eee75ad52" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_b08ab14f-79ef-4325-8921-acfcb4bdaf09" xlink:to="loc_ppl_KentuckyUtilitiesCompanyMember_827321c4-815d-40b5-940e-a44eee75ad52" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_686fe98f-11b2-4d10-8e43-45a8745659ad" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_b08ab14f-79ef-4325-8921-acfcb4bdaf09" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_686fe98f-11b2-4d10-8e43-45a8745659ad" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_f5785c09-bfbe-4838-9c9a-c64cdb2765fa" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1648b9ab-5bc6-4257-80f3-3b7ffaf6ec7e" xlink:to="loc_ppl_ByCompanyAxis_f5785c09-bfbe-4838-9c9a-c64cdb2765fa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_f5785c09-bfbe-4838-9c9a-c64cdb2765fa_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_f5785c09-bfbe-4838-9c9a-c64cdb2765fa" xlink:to="loc_ppl_ByCompanyDomain_f5785c09-bfbe-4838-9c9a-c64cdb2765fa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_eea473ec-2266-4ea3-a221-e2f16b45a381" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_f5785c09-bfbe-4838-9c9a-c64cdb2765fa" xlink:to="loc_ppl_ByCompanyDomain_eea473ec-2266-4ea3-a221-e2f16b45a381" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorporationMember_efafd2c4-6faf-4228-bb69-262a4c1a122b" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_eea473ec-2266-4ea3-a221-e2f16b45a381" xlink:to="loc_ppl_PplElectricUtilitiesCorporationMember_efafd2c4-6faf-4228-bb69-262a4c1a122b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplCapitalFundingMember_46c21127-7fdf-46a0-93fb-ce320e0b6e15" xlink:href="ppl-20250630.xsd#ppl_PplCapitalFundingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_eea473ec-2266-4ea3-a221-e2f16b45a381" xlink:to="loc_ppl_PplCapitalFundingMember_46c21127-7fdf-46a0-93fb-ce320e0b6e15" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_f48a6c05-008d-4d12-ad03-29cc42e12540" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_eea473ec-2266-4ea3-a221-e2f16b45a381" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_f48a6c05-008d-4d12-ad03-29cc42e12540" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCompanyMember_62c17733-1577-4a38-94a2-ecff60f72ee9" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_eea473ec-2266-4ea3-a221-e2f16b45a381" xlink:to="loc_ppl_KentuckyUtilitiesCompanyMember_62c17733-1577-4a38-94a2-ecff60f72ee9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_3dd72dc2-32a1-40c7-874f-713e41be07f6" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_eea473ec-2266-4ea3-a221-e2f16b45a381" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_3dd72dc2-32a1-40c7-874f-713e41be07f6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandEnergyMember_20cd4b66-687a-44d9-9505-86670a671734" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandEnergyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_eea473ec-2266-4ea3-a221-e2f16b45a381" xlink:to="loc_ppl_RhodeIslandEnergyMember_20cd4b66-687a-44d9-9505-86670a671734" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CurrencyAxis_3a65b90c-6229-4329-8046-75b49b291ae7" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CurrencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1648b9ab-5bc6-4257-80f3-3b7ffaf6ec7e" xlink:to="loc_srt_CurrencyAxis_3a65b90c-6229-4329-8046-75b49b291ae7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_3a65b90c-6229-4329-8046-75b49b291ae7_default" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_AllCurrenciesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CurrencyAxis_3a65b90c-6229-4329-8046-75b49b291ae7" xlink:to="loc_currency_AllCurrenciesDomain_3a65b90c-6229-4329-8046-75b49b291ae7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_48d0e15a-0781-4b79-b4a0-ec73bfeac10c" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_AllCurrenciesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CurrencyAxis_3a65b90c-6229-4329-8046-75b49b291ae7" xlink:to="loc_currency_AllCurrenciesDomain_48d0e15a-0781-4b79-b4a0-ec73bfeac10c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_f647c5bb-00a5-4713-9ede-67f65102da16" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1648b9ab-5bc6-4257-80f3-3b7ffaf6ec7e" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_f647c5bb-00a5-4713-9ede-67f65102da16" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_f647c5bb-00a5-4713-9ede-67f65102da16_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_f647c5bb-00a5-4713-9ede-67f65102da16" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_f647c5bb-00a5-4713-9ede-67f65102da16_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_f5453f8f-a9bd-4048-a42f-5008173e8191" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_f647c5bb-00a5-4713-9ede-67f65102da16" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_f5453f8f-a9bd-4048-a42f-5008173e8191" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_7c1b6d00-5fe6-4461-8df1-fd2092b5f594" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_f5453f8f-a9bd-4048-a42f-5008173e8191" xlink:to="loc_us-gaap_SeniorNotesMember_7c1b6d00-5fe6-4461-8df1-fd2092b5f594" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TermLoanFacilityMember_fbe33fcd-63d1-47af-973c-d42a8025550d" xlink:href="ppl-20250630.xsd#ppl_TermLoanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_f5453f8f-a9bd-4048-a42f-5008173e8191" xlink:to="loc_ppl_TermLoanFacilityMember_fbe33fcd-63d1-47af-973c-d42a8025550d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NotePayableMember_4055a20f-8547-4440-8af9-56ac05fe5c41" xlink:href="ppl-20250630.xsd#ppl_NotePayableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_f5453f8f-a9bd-4048-a42f-5008173e8191" xlink:to="loc_ppl_NotePayableMember_4055a20f-8547-4440-8af9-56ac05fe5c41" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FirstMortgageMember_0eb31244-99e5-4330-9ede-1babfb882ca4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FirstMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_f5453f8f-a9bd-4048-a42f-5008173e8191" xlink:to="loc_us-gaap_FirstMortgageMember_0eb31244-99e5-4330-9ede-1babfb882ca4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RemarketedMember_f756520a-2dfd-4b37-b745-a8a40c7d7d5d" xlink:href="ppl-20250630.xsd#ppl_RemarketedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_f5453f8f-a9bd-4048-a42f-5008173e8191" xlink:to="loc_ppl_RemarketedMember_f756520a-2dfd-4b37-b745-a8a40c7d7d5d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_0c38f206-0835-43fc-926e-e492aa19e778" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_f5453f8f-a9bd-4048-a42f-5008173e8191" xlink:to="loc_us-gaap_UnsecuredDebtMember_0c38f206-0835-43fc-926e-e492aa19e778" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorSecuredNotesFirstMortgageBondsMember_ae451d55-d25c-4378-8ca7-b5828c19aea3" xlink:href="ppl-20250630.xsd#ppl_SeniorSecuredNotesFirstMortgageBondsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_f5453f8f-a9bd-4048-a42f-5008173e8191" xlink:to="loc_ppl_SeniorSecuredNotesFirstMortgageBondsMember_ae451d55-d25c-4378-8ca7-b5828c19aea3" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ExchangeableSeniorUnsecuredNotesMember_f96a6428-d5db-45eb-a94a-f87795f3bb64" xlink:href="ppl-20250630.xsd#ppl_ExchangeableSeniorUnsecuredNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_f5453f8f-a9bd-4048-a42f-5008173e8191" xlink:to="loc_ppl_ExchangeableSeniorUnsecuredNotesMember_f96a6428-d5db-45eb-a94a-f87795f3bb64" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_fa82d81f-5cb2-4c50-af06-97c3fd927e0c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1648b9ab-5bc6-4257-80f3-3b7ffaf6ec7e" xlink:to="loc_us-gaap_DebtInstrumentAxis_fa82d81f-5cb2-4c50-af06-97c3fd927e0c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_fa82d81f-5cb2-4c50-af06-97c3fd927e0c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_fa82d81f-5cb2-4c50-af06-97c3fd927e0c" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_fa82d81f-5cb2-4c50-af06-97c3fd927e0c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_fa82d81f-5cb2-4c50-af06-97c3fd927e0c" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TermLoanDue2022Member_b183d426-971e-4da2-93b4-0e560d481bd7" xlink:href="ppl-20250630.xsd#ppl_TermLoanDue2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_TermLoanDue2022Member_b183d426-971e-4da2-93b4-0e560d481bd7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotesDue2030Member_2664e1e9-b108-4437-ada8-ce7a40bab12a" xlink:href="ppl-20250630.xsd#ppl_SeniorNotesDue2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_SeniorNotesDue2030Member_2664e1e9-b108-4437-ada8-ce7a40bab12a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotesDue2020Member_13523148-9d82-4e2c-856b-8d39356ee44d" xlink:href="ppl-20250630.xsd#ppl_SeniorNotesDue2020Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_SeniorNotesDue2020Member_13523148-9d82-4e2c-856b-8d39356ee44d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FirstMortgageBondsDue2050Member_10eb1acd-585a-40e6-aefe-78f0a9ba5a39" xlink:href="ppl-20250630.xsd#ppl_FirstMortgageBondsDue2050Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_FirstMortgageBondsDue2050Member_10eb1acd-585a-40e6-aefe-78f0a9ba5a39" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FirstMortgageBondsDue2020Member_e514a6fb-85f3-4708-a6c5-3a17477441f8" xlink:href="ppl-20250630.xsd#ppl_FirstMortgageBondsDue2020Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_FirstMortgageBondsDue2020Member_e514a6fb-85f3-4708-a6c5-3a17477441f8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PollutionControlRevenueRefundingBonds2008SeriesMember_d0f65061-1931-4ff0-86fc-620d1b22f882" xlink:href="ppl-20250630.xsd#ppl_PollutionControlRevenueRefundingBonds2008SeriesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_PollutionControlRevenueRefundingBonds2008SeriesMember_d0f65061-1931-4ff0-86fc-620d1b22f882" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FirstMortgageBondsFloatingRateSeriesDue2023Member_143c5d99-f701-4651-9778-2d555932af70" xlink:href="ppl-20250630.xsd#ppl_FirstMortgageBondsFloatingRateSeriesDue2023Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_FirstMortgageBondsFloatingRateSeriesDue2023Member_143c5d99-f701-4651-9778-2d555932af70" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PollutionControlRevenueRefundingBonds2016SeriesMember_11536484-c536-4c7a-ad78-6756c56f0119" xlink:href="ppl-20250630.xsd#ppl_PollutionControlRevenueRefundingBonds2016SeriesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_PollutionControlRevenueRefundingBonds2016SeriesMember_11536484-c536-4c7a-ad78-6756c56f0119" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PollutionControlRevenueRefundingBonds2001SeriesMember_ad44c450-6941-4744-9f51-756ebc74048e" xlink:href="ppl-20250630.xsd#ppl_PollutionControlRevenueRefundingBonds2001SeriesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_PollutionControlRevenueRefundingBonds2001SeriesMember_ad44c450-6941-4744-9f51-756ebc74048e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotesDue2035Member_f87c70ed-1ce7-4b5f-9694-31785cff860e" xlink:href="ppl-20250630.xsd#ppl_SeniorNotesDue2035Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_SeniorNotesDue2035Member_f87c70ed-1ce7-4b5f-9694-31785cff860e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TrimbleCountyPollutionControlRevenueBonds2001SeriesBMember_5279552d-687c-4b7c-a467-3385934e4cdd" xlink:href="ppl-20250630.xsd#ppl_TrimbleCountyPollutionControlRevenueBonds2001SeriesBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_TrimbleCountyPollutionControlRevenueBonds2001SeriesBMember_5279552d-687c-4b7c-a467-3385934e4cdd" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_JeffersonCountyPollutionControlRevenueBonds2001SeriesBMember_c028363c-8bce-4a0f-9f85-4bcd16b0928e" xlink:href="ppl-20250630.xsd#ppl_JeffersonCountyPollutionControlRevenueBonds2001SeriesBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_JeffersonCountyPollutionControlRevenueBonds2001SeriesBMember_c028363c-8bce-4a0f-9f85-4bcd16b0928e" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleJeffersonCountyMetroGovernmentOfKentuckyPollutionControlRevenueBonds2003SeriesAMember_75700c05-63f5-4cde-9614-62c32ca78962" xlink:href="ppl-20250630.xsd#ppl_LouisvilleJeffersonCountyMetroGovernmentOfKentuckyPollutionControlRevenueBonds2003SeriesAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_LouisvilleJeffersonCountyMetroGovernmentOfKentuckyPollutionControlRevenueBonds2003SeriesAMember_75700c05-63f5-4cde-9614-62c32ca78962" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_fc7d5e58-be2a-40a8-89cf-088e03f59c09" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_us-gaap_SeniorNotesMember_fc7d5e58-be2a-40a8-89cf-088e03f59c09" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_JuniorSubordinatedNotesDue2073Member_fb1bec05-4702-489c-8d64-4636391aa5ea" xlink:href="ppl-20250630.xsd#ppl_JuniorSubordinatedNotesDue2073Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_JuniorSubordinatedNotesDue2073Member_fb1bec05-4702-489c-8d64-4636391aa5ea" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_JeffersonCountyEnvironmentalFacilitiesRevenueRefundingBonds2007SeriesBMember_4ed435ba-9846-4e06-9109-3df76975f6b6" xlink:href="ppl-20250630.xsd#ppl_JeffersonCountyEnvironmentalFacilitiesRevenueRefundingBonds2007SeriesBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_JeffersonCountyEnvironmentalFacilitiesRevenueRefundingBonds2007SeriesBMember_4ed435ba-9846-4e06-9109-3df76975f6b6" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_JeffersonCountyEnvironmentalFacilitiesRevenueRefundingBond2007SeriesAMember_7af0a445-4612-473e-aa58-38eae3b15989" xlink:href="ppl-20250630.xsd#ppl_JeffersonCountyEnvironmentalFacilitiesRevenueRefundingBond2007SeriesAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_JeffersonCountyEnvironmentalFacilitiesRevenueRefundingBond2007SeriesAMember_7af0a445-4612-473e-aa58-38eae3b15989" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RemarketedMember_2a5efb6e-304b-4618-91f8-33fba0bcf101" xlink:href="ppl-20250630.xsd#ppl_RemarketedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_RemarketedMember_2a5efb6e-304b-4618-91f8-33fba0bcf101" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CarrollCountyEnvironmentalFacilitiesRevenueRefundingBonds2006SeriesBMember_2e58cd18-7195-4694-a6b2-edb93192d53c" xlink:href="ppl-20250630.xsd#ppl_CarrollCountyEnvironmentalFacilitiesRevenueRefundingBonds2006SeriesBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_CarrollCountyEnvironmentalFacilitiesRevenueRefundingBonds2006SeriesBMember_2e58cd18-7195-4694-a6b2-edb93192d53c" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CarrollCountyEnvironmentalFacilitiesRevenueBonds2008SeriesAMember_4cffb3cf-df67-468f-8371-41703ee4aeb8" xlink:href="ppl-20250630.xsd#ppl_CarrollCountyEnvironmentalFacilitiesRevenueBonds2008SeriesAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_CarrollCountyEnvironmentalFacilitiesRevenueBonds2008SeriesAMember_4cffb3cf-df67-468f-8371-41703ee4aeb8" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FirstMortgageBondsFloatingRateSeriesDue2024Member_aab3bb27-039b-4b18-a064-7fd96f27d87e" xlink:href="ppl-20250630.xsd#ppl_FirstMortgageBondsFloatingRateSeriesDue2024Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_FirstMortgageBondsFloatingRateSeriesDue2024Member_aab3bb27-039b-4b18-a064-7fd96f27d87e" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FirstMortgageBonds3SeriesDue2021Member_61d54627-f9d8-4221-9831-ed29b2b1e352" xlink:href="ppl-20250630.xsd#ppl_FirstMortgageBonds3SeriesDue2021Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_FirstMortgageBonds3SeriesDue2021Member_61d54627-f9d8-4221-9831-ed29b2b1e352" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotesDue2021Member_6a9dba97-9185-4b34-b6b0-dafe5ca8da02" xlink:href="ppl-20250630.xsd#ppl_SeniorNotesDue2021Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_SeniorNotesDue2021Member_6a9dba97-9185-4b34-b6b0-dafe5ca8da02" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TrimbleCountyPollutionControlRevenueBonds2001SeriesAMember_057915bf-69b6-41ee-aa06-59661533c246" xlink:href="ppl-20250630.xsd#ppl_TrimbleCountyPollutionControlRevenueBonds2001SeriesAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_TrimbleCountyPollutionControlRevenueBonds2001SeriesAMember_057915bf-69b6-41ee-aa06-59661533c246" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LCIDAPollutionControlRevenueRefundingBonds2016SeriesAMember_9dbc4014-856c-4796-a463-36a23fdb57fc" xlink:href="ppl-20250630.xsd#ppl_LCIDAPollutionControlRevenueRefundingBonds2016SeriesAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_LCIDAPollutionControlRevenueRefundingBonds2016SeriesAMember_9dbc4014-856c-4796-a463-36a23fdb57fc" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LCIDAPollutionControlRevenueRefundingBonds2016SeriesBMember_8a949a5f-a2c3-4f76-8439-cf72844225d2" xlink:href="ppl-20250630.xsd#ppl_LCIDAPollutionControlRevenueRefundingBonds2016SeriesBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_LCIDAPollutionControlRevenueRefundingBonds2016SeriesBMember_8a949a5f-a2c3-4f76-8439-cf72844225d2" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FirstMortgageBondsDue2033Member_6154de2c-d57b-4aa4-8b38-333927b0aaf6" xlink:href="ppl-20250630.xsd#ppl_FirstMortgageBondsDue2033Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_FirstMortgageBondsDue2033Member_6154de2c-d57b-4aa4-8b38-333927b0aaf6" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FirstMortgageBondsDue2053Member_068f305a-455f-4221-a2bc-7bb08df5f6cd" xlink:href="ppl-20250630.xsd#ppl_FirstMortgageBondsDue2053Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_FirstMortgageBondsDue2053Member_068f305a-455f-4221-a2bc-7bb08df5f6cd" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FirstMortgageBondsDue2033And2053Member_7c79427f-7a2b-4f0e-b66b-ff75cc169ce7" xlink:href="ppl-20250630.xsd#ppl_FirstMortgageBondsDue2033And2053Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_FirstMortgageBondsDue2033And2053Member_7c79427f-7a2b-4f0e-b66b-ff75cc169ce7" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ExchangeableSeniorNotesDue2028Member_f173b3a7-a279-4a76-9bf2-6ac585793c7e" xlink:href="ppl-20250630.xsd#ppl_ExchangeableSeniorNotesDue2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_ExchangeableSeniorNotesDue2028Member_f173b3a7-a279-4a76-9bf2-6ac585793c7e" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotesDue2034Member_296c0bc1-01a6-434a-952d-40569d1c5aed" xlink:href="ppl-20250630.xsd#ppl_SeniorNotesDue2034Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_SeniorNotesDue2034Member_296c0bc1-01a6-434a-952d-40569d1c5aed" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FirstMortgageBondsDue2034Member_e4911862-b5de-4765-a720-759ed2298f13" xlink:href="ppl-20250630.xsd#ppl_FirstMortgageBondsDue2034Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f6ec5ac8-a84e-4fe8-bf96-681938ec3898" xlink:to="loc_ppl_FirstMortgageBondsDue2034Member_e4911862-b5de-4765-a720-759ed2298f13" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CreditFacilityDescriptionAxis_f54b0bc8-e649-46f0-ae91-5330a710d49b" xlink:href="ppl-20250630.xsd#ppl_CreditFacilityDescriptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1648b9ab-5bc6-4257-80f3-3b7ffaf6ec7e" xlink:to="loc_ppl_CreditFacilityDescriptionAxis_f54b0bc8-e649-46f0-ae91-5330a710d49b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CreditFacilityDescriptionDomain_f54b0bc8-e649-46f0-ae91-5330a710d49b_default" xlink:href="ppl-20250630.xsd#ppl_CreditFacilityDescriptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_CreditFacilityDescriptionAxis_f54b0bc8-e649-46f0-ae91-5330a710d49b" xlink:to="loc_ppl_CreditFacilityDescriptionDomain_f54b0bc8-e649-46f0-ae91-5330a710d49b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:href="ppl-20250630.xsd#ppl_CreditFacilityDescriptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_CreditFacilityDescriptionAxis_f54b0bc8-e649-46f0-ae91-5330a710d49b" xlink:to="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TermLoanFacilityMember_f92eee12-0755-4396-b6e7-08dde1857b65" xlink:href="ppl-20250630.xsd#ppl_TermLoanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:to="loc_ppl_TermLoanFacilityMember_f92eee12-0755-4396-b6e7-08dde1857b65" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotesDue2022Member_5dcb12b1-d6e3-4a82-b561-5255dac8b15a" xlink:href="ppl-20250630.xsd#ppl_SeniorNotesDue2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:to="loc_ppl_SeniorNotesDue2022Member_5dcb12b1-d6e3-4a82-b561-5255dac8b15a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotesDue2023Member_8acc3a03-1b49-480f-9234-79fc5c673e20" xlink:href="ppl-20250630.xsd#ppl_SeniorNotesDue2023Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:to="loc_ppl_SeniorNotesDue2023Member_8acc3a03-1b49-480f-9234-79fc5c673e20" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotesDue2024Member_4df5c657-e4f3-4cd8-a3eb-4a3622414500" xlink:href="ppl-20250630.xsd#ppl_SeniorNotesDue2024Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:to="loc_ppl_SeniorNotesDue2024Member_4df5c657-e4f3-4cd8-a3eb-4a3622414500" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotesDue2043Member_b7435d74-70a9-474f-a35b-f94ea53c2977" xlink:href="ppl-20250630.xsd#ppl_SeniorNotesDue2043Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:to="loc_ppl_SeniorNotesDue2043Member_b7435d74-70a9-474f-a35b-f94ea53c2977" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotesDue2044Member_6865078b-512a-4cda-8a7b-6f484e171e3a" xlink:href="ppl-20250630.xsd#ppl_SeniorNotesDue2044Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:to="loc_ppl_SeniorNotesDue2044Member_6865078b-512a-4cda-8a7b-6f484e171e3a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotesDue2047Member_8d8b31e5-89d0-4f0e-82ea-7732e37b5d37" xlink:href="ppl-20250630.xsd#ppl_SeniorNotesDue2047Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:to="loc_ppl_SeniorNotesDue2047Member_8d8b31e5-89d0-4f0e-82ea-7732e37b5d37" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotesDue2030Member_9ac616ff-5928-4958-a8d7-f95ad6b0e1de" xlink:href="ppl-20250630.xsd#ppl_SeniorNotesDue2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:to="loc_ppl_SeniorNotesDue2030Member_9ac616ff-5928-4958-a8d7-f95ad6b0e1de" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotesDue2026Member_d73aed1d-a17f-492a-bf0a-04e1e93cc4fe" xlink:href="ppl-20250630.xsd#ppl_SeniorNotesDue2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:to="loc_ppl_SeniorNotesDue2026Member_d73aed1d-a17f-492a-bf0a-04e1e93cc4fe" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_JuniorSubordinatedNotesDue2073Member_6038e3d4-f0a8-4937-a0eb-0f4e380e6ef5" xlink:href="ppl-20250630.xsd#ppl_JuniorSubordinatedNotesDue2073Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:to="loc_ppl_JuniorSubordinatedNotesDue2073Member_6038e3d4-f0a8-4937-a0eb-0f4e380e6ef5" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_8b3f7e25-324d-4161-b00a-0b874ac089f7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:to="loc_us-gaap_SeniorNotesMember_8b3f7e25-324d-4161-b00a-0b874ac089f7" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotesDue2022420Member_8911ba0e-fb5d-4c62-9ce8-603b4f289902" xlink:href="ppl-20250630.xsd#ppl_SeniorNotesDue2022420Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:to="loc_ppl_SeniorNotesDue2022420Member_8911ba0e-fb5d-4c62-9ce8-603b4f289902" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotesDue2022350Member_351189fe-3850-4509-8be6-ba834bcf90a2" xlink:href="ppl-20250630.xsd#ppl_SeniorNotesDue2022350Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:to="loc_ppl_SeniorNotesDue2022350Member_351189fe-3850-4509-8be6-ba834bcf90a2" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SeniorNotes2Member_bcbe4759-fe22-4453-84bf-6fe7fa6a32ff" xlink:href="ppl-20250630.xsd#ppl_SeniorNotes2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CreditFacilityDescriptionDomain_d34ed0f0-0245-4e91-8d34-4bdf2f6d61ac" xlink:to="loc_ppl_SeniorNotes2Member_bcbe4759-fe22-4453-84bf-6fe7fa6a32ff" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LongTermDebtActivityAxis_ef6e0e4c-b9f8-4e0a-bc02-8270f828b264" xlink:href="ppl-20250630.xsd#ppl_LongTermDebtActivityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1648b9ab-5bc6-4257-80f3-3b7ffaf6ec7e" xlink:to="loc_ppl_LongTermDebtActivityAxis_ef6e0e4c-b9f8-4e0a-bc02-8270f828b264" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LongTermDebtActivityDomain_ef6e0e4c-b9f8-4e0a-bc02-8270f828b264_default" xlink:href="ppl-20250630.xsd#ppl_LongTermDebtActivityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_LongTermDebtActivityAxis_ef6e0e4c-b9f8-4e0a-bc02-8270f828b264" xlink:to="loc_ppl_LongTermDebtActivityDomain_ef6e0e4c-b9f8-4e0a-bc02-8270f828b264_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LongTermDebtActivityDomain_6b00765c-7a88-4d42-8244-59fbc2e3f15b" xlink:href="ppl-20250630.xsd#ppl_LongTermDebtActivityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_LongTermDebtActivityAxis_ef6e0e4c-b9f8-4e0a-bc02-8270f828b264" xlink:to="loc_ppl_LongTermDebtActivityDomain_6b00765c-7a88-4d42-8244-59fbc2e3f15b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IntentToRedeemMember_210b0a8a-03d6-4f1a-ae85-4e8aef6f8a19" xlink:href="ppl-20250630.xsd#ppl_IntentToRedeemMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LongTermDebtActivityDomain_6b00765c-7a88-4d42-8244-59fbc2e3f15b" xlink:to="loc_ppl_IntentToRedeemMember_210b0a8a-03d6-4f1a-ae85-4e8aef6f8a19" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RedemptionMember_bd303d39-8d5f-4a0c-bc57-6c9ff66d7bd6" xlink:href="ppl-20250630.xsd#ppl_RedemptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LongTermDebtActivityDomain_6b00765c-7a88-4d42-8244-59fbc2e3f15b" xlink:to="loc_ppl_RedemptionMember_bd303d39-8d5f-4a0c-bc57-6c9ff66d7bd6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RemarketedMember_67c74bc0-000d-4c4e-9673-a6a399792e1e" xlink:href="ppl-20250630.xsd#ppl_RemarketedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LongTermDebtActivityDomain_6b00765c-7a88-4d42-8244-59fbc2e3f15b" xlink:to="loc_ppl_RemarketedMember_67c74bc0-000d-4c4e-9673-a6a399792e1e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RepaymentMember_3b0314d1-240a-4a70-b80e-2d354df356e9" xlink:href="ppl-20250630.xsd#ppl_RepaymentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LongTermDebtActivityDomain_6b00765c-7a88-4d42-8244-59fbc2e3f15b" xlink:to="loc_ppl_RepaymentMember_3b0314d1-240a-4a70-b80e-2d354df356e9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BondRedemptionMember_27bf9714-9209-4208-8b54-c69c6b56b536" xlink:href="ppl-20250630.xsd#ppl_BondRedemptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LongTermDebtActivityDomain_6b00765c-7a88-4d42-8244-59fbc2e3f15b" xlink:to="loc_ppl_BondRedemptionMember_27bf9714-9209-4208-8b54-c69c6b56b536" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ConversionToWeeklyInterestRateMember_7a593941-cab6-4b50-b6bc-aecdcd3c2c96" xlink:href="ppl-20250630.xsd#ppl_ConversionToWeeklyInterestRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LongTermDebtActivityDomain_6b00765c-7a88-4d42-8244-59fbc2e3f15b" xlink:to="loc_ppl_ConversionToWeeklyInterestRateMember_7a593941-cab6-4b50-b6bc-aecdcd3c2c96" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentsAbstract_fd783206-9725-4a86-abc3-41e26b75ceba" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_DebtInstrumentsAbstract_fd783206-9725-4a86-abc3-41e26b75ceba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_38ee2a89-696a-4b51-a410-c9f008e1c592" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_fd783206-9725-4a86-abc3-41e26b75ceba" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_38ee2a89-696a-4b51-a410-c9f008e1c592" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_f00c005b-0b1b-467d-862c-b3affe0f4d01" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_fd783206-9725-4a86-abc3-41e26b75ceba" xlink:to="loc_us-gaap_LineOfCredit_f00c005b-0b1b-467d-862c-b3affe0f4d01" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd_e4e41458-db19-46b9-ab28-d75527eae35d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_fd783206-9725-4a86-abc3-41e26b75ceba" xlink:to="loc_us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd_e4e41458-db19-46b9-ab28-d75527eae35d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_0db89d32-dd1c-4af3-bbac-ab803945437d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_fd783206-9725-4a86-abc3-41e26b75ceba" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_0db89d32-dd1c-4af3-bbac-ab803945437d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_2e8903cc-4d70-48b7-a11d-c7f3b29110a5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_fd783206-9725-4a86-abc3-41e26b75ceba" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_2e8903cc-4d70-48b7-a11d-c7f3b29110a5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSecuredDebt_58d75a29-e1e4-4372-9527-b47734ff8e82" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfSecuredDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_fd783206-9725-4a86-abc3-41e26b75ceba" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSecuredDebt_58d75a29-e1e4-4372-9527-b47734ff8e82" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_036db961-a860-43f8-9ff0-282facb72557" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_fd783206-9725-4a86-abc3-41e26b75ceba" xlink:to="loc_us-gaap_DebtInstrumentTerm_036db961-a860-43f8-9ff0-282facb72557" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfFirstMortgageBond_fb23a717-cb3d-4fd9-976a-0c5a1c348950" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfFirstMortgageBond"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_fd783206-9725-4a86-abc3-41e26b75ceba" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfFirstMortgageBond_fb23a717-cb3d-4fd9-976a-0c5a1c348950" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfDebt_56fa2473-788a-496e-b600-66648c8f0ffc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfDebt_56fa2473-788a-496e-b600-66648c8f0ffc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRepurchaseAmount_cb697bc5-eb2f-428f-8368-998ec6c74bb5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentRepurchaseAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_DebtInstrumentRepurchaseAmount_cb697bc5-eb2f-428f-8368-998ec6c74bb5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtWeightedAverageInterestRate_6a558504-40c7-4707-b644-7e6cf4dfb5a7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtWeightedAverageInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_LongtermDebtWeightedAverageInterestRate_6a558504-40c7-4707-b644-7e6cf4dfb5a7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_80e6c616-12d0-4416-9a0f-eb2ea5fc786e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_80e6c616-12d0-4416-9a0f-eb2ea5fc786e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExtinguishmentOfDebtAmount_9f370e21-ec8f-4fdf-beb4-ee43809e3cd7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ExtinguishmentOfDebtAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_ExtinguishmentOfDebtAmount_9f370e21-ec8f-4fdf-beb4-ee43809e3cd7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ExtinguishmentOfDebtAggregatePurchasePrice_ab6ea837-6e3b-4930-981f-f3ed21a44e32" xlink:href="ppl-20250630.xsd#ppl_ExtinguishmentOfDebtAggregatePurchasePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_ppl_ExtinguishmentOfDebtAggregatePurchasePrice_ab6ea837-6e3b-4930-981f-f3ed21a44e32" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_72f8add6-1a5c-4050-8fe9-311031718d7b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_72f8add6-1a5c-4050-8fe9-311031718d7b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsGross_88a3051f-2bd7-4db2-babb-595e1a9d85f2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredFinanceCostsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_DeferredFinanceCostsGross_88a3051f-2bd7-4db2-babb-595e1a9d85f2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_7fc1fe89-f481-47fc-b8f8-0e74d8a86ac9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_LongTermDebt_7fc1fe89-f481-47fc-b8f8-0e74d8a86ac9" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_c9768901-2069-411e-b0a7-d4c61a3bc2bf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_LongTermDebtCurrent_c9768901-2069-411e-b0a7-d4c61a3bc2bf" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_9ee8df7f-5347-4a0b-83f0-5879ab82d07d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_9ee8df7f-5347-4a0b-83f0-5879ab82d07d" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_83c4e21c-7acd-4151-b3c7-5a0a0d690342" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_83c4e21c-7acd-4151-b3c7-5a0a0d690342" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_a553ada6-bd4e-4a6f-9df2-11165036b630" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_a553ada6-bd4e-4a6f-9df2-11165036b630" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_f83ce120-7ce5-4dac-b96f-1504c9c87c17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_f83ce120-7ce5-4dac-b96f-1504c9c87c17" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_6d273a85-6730-4564-98eb-219cea9cf9d9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_6d273a85-6730-4564-98eb-219cea9cf9d9" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_a4f5bfa9-a81c-404d-be60-99b8052154dd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_a4f5bfa9-a81c-404d-be60-99b8052154dd" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_745a5194-3886-4669-8cb1-6219793aaced" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_745a5194-3886-4669-8cb1-6219793aaced" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AnnualSinkingFundPaymentRequirement_ddc996db-4650-496e-b180-144421303ad1" xlink:href="ppl-20250630.xsd#ppl_AnnualSinkingFundPaymentRequirement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_ppl_AnnualSinkingFundPaymentRequirement_ddc996db-4650-496e-b180-144421303ad1" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtWeightedAverageInterestRate_2cf339e3-626f-4167-b87e-9531599ddffc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtWeightedAverageInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_DebtWeightedAverageInterestRate_2cf339e3-626f-4167-b87e-9531599ddffc" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ExchangeableSeniorNotesInitialExchangeRateSharesPer1000PrincipalAmount_3a1d2aa8-4808-4b0d-9c29-c2131714245a" xlink:href="ppl-20250630.xsd#ppl_ExchangeableSeniorNotesInitialExchangeRateSharesPer1000PrincipalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_ppl_ExchangeableSeniorNotesInitialExchangeRateSharesPer1000PrincipalAmount_3a1d2aa8-4808-4b0d-9c29-c2131714245a" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ExchangeableSeniorNotesInitialExchangeRateDollarsPerShare_7378c670-6b1c-4181-8288-55f9f2528e96" xlink:href="ppl-20250630.xsd#ppl_ExchangeableSeniorNotesInitialExchangeRateDollarsPerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_ppl_ExchangeableSeniorNotesInitialExchangeRateDollarsPerShare_7378c670-6b1c-4181-8288-55f9f2528e96" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromConvertibleDebt_2bfb781e-115b-43fa-89b9-1837b7e12cb1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromConvertibleDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_4aa3981e-4e68-4efd-bba5-3118cdecc353" xlink:to="loc_us-gaap_ProceedsFromConvertibleDebt_2bfb781e-115b-43fa-89b9-1837b7e12cb1" xlink:type="arc" order="22"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/FinancingActivitiesEquitySecuritiesDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#FinancingActivitiesEquitySecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/FinancingActivitiesEquitySecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SecuritiesFinancingTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuritiesFinancingTransactionTable_ecd259f8-aecb-4abd-908d-77b27fe4cbb2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SecuritiesFinancingTransactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_us-gaap_SecuritiesFinancingTransactionTable_ecd259f8-aecb-4abd-908d-77b27fe4cbb2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_0843e7f0-6e64-40c9-a541-c4fcb644a5c4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionTable_ecd259f8-aecb-4abd-908d-77b27fe4cbb2" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_0843e7f0-6e64-40c9-a541-c4fcb644a5c4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_0843e7f0-6e64-40c9-a541-c4fcb644a5c4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_0843e7f0-6e64-40c9-a541-c4fcb644a5c4" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_0843e7f0-6e64-40c9-a541-c4fcb644a5c4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_075439a1-0a52-4746-b3f8-6267e366ab18" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_0843e7f0-6e64-40c9-a541-c4fcb644a5c4" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_075439a1-0a52-4746-b3f8-6267e366ab18" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_d34a02e3-7072-4d11-bdc7-300375f645fd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_075439a1-0a52-4746-b3f8-6267e366ab18" xlink:to="loc_us-gaap_SubsequentEventMember_d34a02e3-7072-4d11-bdc7-300375f645fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_80d63614-63c7-4d32-8591-71842c03f48b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionTable_ecd259f8-aecb-4abd-908d-77b27fe4cbb2" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_80d63614-63c7-4d32-8591-71842c03f48b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_80d63614-63c7-4d32-8591-71842c03f48b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_80d63614-63c7-4d32-8591-71842c03f48b" xlink:to="loc_us-gaap_EquityComponentDomain_80d63614-63c7-4d32-8591-71842c03f48b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_6f82918e-a7d7-4803-928d-2c4caf54fbc1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_80d63614-63c7-4d32-8591-71842c03f48b" xlink:to="loc_us-gaap_EquityComponentDomain_6f82918e-a7d7-4803-928d-2c4caf54fbc1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_1436976b-97f7-48ae-9736-12e4f0573ff6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_6f82918e-a7d7-4803-928d-2c4caf54fbc1" xlink:to="loc_us-gaap_TreasuryStockCommonMember_1436976b-97f7-48ae-9736-12e4f0573ff6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsAxis_09a8332a-13c9-4211-a3d4-1ad1b34765f4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DividendsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionTable_ecd259f8-aecb-4abd-908d-77b27fe4cbb2" xlink:to="loc_us-gaap_DividendsAxis_09a8332a-13c9-4211-a3d4-1ad1b34765f4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsDomain_09a8332a-13c9-4211-a3d4-1ad1b34765f4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DividendsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DividendsAxis_09a8332a-13c9-4211-a3d4-1ad1b34765f4" xlink:to="loc_us-gaap_DividendsDomain_09a8332a-13c9-4211-a3d4-1ad1b34765f4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsDomain_83edff29-edad-4e91-8b09-1feca2294240" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DividendsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DividendsAxis_09a8332a-13c9-4211-a3d4-1ad1b34765f4" xlink:to="loc_us-gaap_DividendsDomain_83edff29-edad-4e91-8b09-1feca2294240" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EquityDistributionAgreementAxis_cce46aee-cd56-4e1d-a27c-7218016a3cf2" xlink:href="ppl-20250630.xsd#ppl_EquityDistributionAgreementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionTable_ecd259f8-aecb-4abd-908d-77b27fe4cbb2" xlink:to="loc_ppl_EquityDistributionAgreementAxis_cce46aee-cd56-4e1d-a27c-7218016a3cf2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EquityDistributionAgreementDomain_cce46aee-cd56-4e1d-a27c-7218016a3cf2_default" xlink:href="ppl-20250630.xsd#ppl_EquityDistributionAgreementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_EquityDistributionAgreementAxis_cce46aee-cd56-4e1d-a27c-7218016a3cf2" xlink:to="loc_ppl_EquityDistributionAgreementDomain_cce46aee-cd56-4e1d-a27c-7218016a3cf2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EquityDistributionAgreementDomain_d0d5a263-96c1-4d7e-8559-149984cd44cc" xlink:href="ppl-20250630.xsd#ppl_EquityDistributionAgreementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_EquityDistributionAgreementAxis_cce46aee-cd56-4e1d-a27c-7218016a3cf2" xlink:to="loc_ppl_EquityDistributionAgreementDomain_d0d5a263-96c1-4d7e-8559-149984cd44cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AtTheMarketProgramMember_9d61c139-0789-47c6-a86c-e04f38614830" xlink:href="ppl-20250630.xsd#ppl_AtTheMarketProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_EquityDistributionAgreementDomain_d0d5a263-96c1-4d7e-8559-149984cd44cc" xlink:to="loc_ppl_AtTheMarketProgramMember_9d61c139-0789-47c6-a86c-e04f38614830" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CommonStockAggregateSalesPrice_8c69ffaa-df3e-40f4-a873-71c8dc0f76f5" xlink:href="ppl-20250630.xsd#ppl_CommonStockAggregateSalesPrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_ppl_CommonStockAggregateSalesPrice_8c69ffaa-df3e-40f4-a873-71c8dc0f76f5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_e6749bf7-e496-445f-8151-47d0a15dc136" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_e6749bf7-e496-445f-8151-47d0a15dc136" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StockRepurchaseProgramAuthorizedAmount1_b098c2cb-8298-48c5-be8d-0b116ac43492" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_srt_StockRepurchaseProgramAuthorizedAmount1_b098c2cb-8298-48c5-be8d-0b116ac43492" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_StockRepurchaseProgramValueOfSharesExpectedToBeRepurchased_661bb09b-c79b-405b-aa46-77835c8d1d38" xlink:href="ppl-20250630.xsd#ppl_StockRepurchaseProgramValueOfSharesExpectedToBeRepurchased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_ppl_StockRepurchaseProgramValueOfSharesExpectedToBeRepurchased_661bb09b-c79b-405b-aa46-77835c8d1d38" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_141e7c50-77a3-4f08-9730-8147795fd2f6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_141e7c50-77a3-4f08-9730-8147795fd2f6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_aeecbda5-6de4-46de-b0f5-483b0cd57b31" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockSharesAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_aeecbda5-6de4-46de-b0f5-483b0cd57b31" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MaximumPercentagePaidToSellingAgents_faa7a382-ee14-417f-8c38-9440030cabef" xlink:href="ppl-20250630.xsd#ppl_MaximumPercentagePaidToSellingAgents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_ppl_MaximumPercentagePaidToSellingAgents_faa7a382-ee14-417f-8c38-9440030cabef" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_c8a7b005-a166-4bb3-ba8a-0dd2d0f423a7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_c8a7b005-a166-4bb3-ba8a-0dd2d0f423a7" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValueOutstanding_90515db8-6b95-40ed-a321-8e65b9a1103f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockValueOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_us-gaap_PreferredStockValueOutstanding_90515db8-6b95-40ed-a321-8e65b9a1103f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CommonStockDividendsPerShareDeclaredAsPerAnnumEquivalent_24660b77-49f9-42d5-9e94-4be6b71df8af" xlink:href="ppl-20250630.xsd#ppl_CommonStockDividendsPerShareDeclaredAsPerAnnumEquivalent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_ppl_CommonStockDividendsPerShareDeclaredAsPerAnnumEquivalent_24660b77-49f9-42d5-9e94-4be6b71df8af" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockDividendPreferenceOrRestrictions_59f7ce69-e15a-4f9c-bb4a-00fc50a92fce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockDividendPreferenceOrRestrictions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_us-gaap_PreferredStockDividendPreferenceOrRestrictions_59f7ce69-e15a-4f9c-bb4a-00fc50a92fce" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_d5c5cf19-af56-48f0-99eb-e78dda7555bd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_d5c5cf19-af56-48f0-99eb-e78dda7555bd" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfRedeemableNoncontrollingInterest_71805501-bf8e-4737-964c-604ae83020cb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForRepurchaseOfRedeemableNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfRedeemableNoncontrollingInterest_71805501-bf8e-4737-964c-604ae83020cb" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_c38edbee-1fcb-40b4-a005-86553c678104" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_us-gaap_PreferredStockSharesOutstanding_c38edbee-1fcb-40b4-a005-86553c678104" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PreferredStockRedeemedProratedDividendPerShare_448c8e0f-49df-4d10-98d0-bdbbd97c3309" xlink:href="ppl-20250630.xsd#ppl_PreferredStockRedeemedProratedDividendPerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_ppl_PreferredStockRedeemedProratedDividendPerShare_448c8e0f-49df-4d10-98d0-bdbbd97c3309" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PreferredStockRedemptionPremiumPerShare_e04d50a0-55c0-4b0e-8652-45721658b4bd" xlink:href="ppl-20250630.xsd#ppl_PreferredStockRedemptionPremiumPerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_ppl_PreferredStockRedemptionPremiumPerShare_e04d50a0-55c0-4b0e-8652-45721658b4bd" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_76554152-e002-4d9f-bfda-6b0d992244cc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_76554152-e002-4d9f-bfda-6b0d992244cc" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_e763594a-762b-4aac-a13a-3ac62cb043a7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_e763594a-762b-4aac-a13a-3ac62cb043a7" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_432d74a4-5a2f-46ba-869a-37f8bf475e2f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_432d74a4-5a2f-46ba-869a-37f8bf475e2f" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MaximumSellingAgentCompensationEquityDistribution_c36eed7b-3454-40b0-a508-f3481dfd5b72" xlink:href="ppl-20250630.xsd#ppl_MaximumSellingAgentCompensationEquityDistribution"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_ppl_MaximumSellingAgentCompensationEquityDistribution_c36eed7b-3454-40b0-a508-f3481dfd5b72" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CommonStockSalesForwardContractShares_3f6aaa7f-4592-4088-8240-73ee4918456d" xlink:href="ppl-20250630.xsd#ppl_CommonStockSalesForwardContractShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_ppl_CommonStockSalesForwardContractShares_3f6aaa7f-4592-4088-8240-73ee4918456d" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CommonStockSalesForwardContractInitialForwardPrice_cdccc656-9f59-4200-b47f-cb027820aa88" xlink:href="ppl-20250630.xsd#ppl_CommonStockSalesForwardContractInitialForwardPrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_ppl_CommonStockSalesForwardContractInitialForwardPrice_cdccc656-9f59-4200-b47f-cb027820aa88" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CommonStockForwardContractPhysicalSharesScenarioSettlementShares_e943fdad-a3d6-46c1-93dd-501d935b6316" xlink:href="ppl-20250630.xsd#ppl_CommonStockForwardContractPhysicalSharesScenarioSettlementShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_ppl_CommonStockForwardContractPhysicalSharesScenarioSettlementShares_e943fdad-a3d6-46c1-93dd-501d935b6316" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CommonStockForwardContractPhysicalSharesScenarioSettlementProceeds_07c0cca6-1e0e-40fd-888a-d9877cdf1139" xlink:href="ppl-20250630.xsd#ppl_CommonStockForwardContractPhysicalSharesScenarioSettlementProceeds"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SecuritiesFinancingTransactionLineItems_eddd610a-ac58-4443-85eb-6005b8156fe6" xlink:to="loc_ppl_CommonStockForwardContractPhysicalSharesScenarioSettlementProceeds_07c0cca6-1e0e-40fd-888a-d9877cdf1139" xlink:type="arc" order="23"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/LeasesLesseeDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#LeasesLesseeDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/LeasesLesseeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_c5dc109a-243a-4b4e-80c0-6660a06cc3a3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_9dbb7765-b44a-4837-bbcb-59f48205c0df" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_c5dc109a-243a-4b4e-80c0-6660a06cc3a3" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_9dbb7765-b44a-4837-bbcb-59f48205c0df" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_9025a7a2-d659-4188-9a2b-d8dc465ff1b1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_9dbb7765-b44a-4837-bbcb-59f48205c0df" xlink:to="loc_dei_LegalEntityAxis_9025a7a2-d659-4188-9a2b-d8dc465ff1b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9025a7a2-d659-4188-9a2b-d8dc465ff1b1_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_9025a7a2-d659-4188-9a2b-d8dc465ff1b1" xlink:to="loc_dei_EntityDomain_9025a7a2-d659-4188-9a2b-d8dc465ff1b1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b97fdfd1-ea87-4006-a49f-d058efae2c59" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_9025a7a2-d659-4188-9a2b-d8dc465ff1b1" xlink:to="loc_dei_EntityDomain_b97fdfd1-ea87-4006-a49f-d058efae2c59" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_90467fb0-8b28-4729-a4d2-8fb0f84f2605" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_b97fdfd1-ea87-4006-a49f-d058efae2c59" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_90467fb0-8b28-4729-a4d2-8fb0f84f2605" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_575625e8-32c6-431e-b167-d89618b77dba" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_b97fdfd1-ea87-4006-a49f-d058efae2c59" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_575625e8-32c6-431e-b167-d89618b77dba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_29f1e9bb-e94c-49df-93fa-a37be28ef895" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_9dbb7765-b44a-4837-bbcb-59f48205c0df" xlink:to="loc_ppl_ByCompanyAxis_29f1e9bb-e94c-49df-93fa-a37be28ef895" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_29f1e9bb-e94c-49df-93fa-a37be28ef895_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_29f1e9bb-e94c-49df-93fa-a37be28ef895" xlink:to="loc_ppl_ByCompanyDomain_29f1e9bb-e94c-49df-93fa-a37be28ef895_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_43270ec2-276a-4aa5-a860-f14dfca0aae5" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_29f1e9bb-e94c-49df-93fa-a37be28ef895" xlink:to="loc_ppl_ByCompanyDomain_43270ec2-276a-4aa5-a860-f14dfca0aae5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_c2905e60-ab40-4b01-8c19-446a8a821c89" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_43270ec2-276a-4aa5-a860-f14dfca0aae5" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_c2905e60-ab40-4b01-8c19-446a8a821c89" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCompanyMember_76cd4f7c-0617-4fdb-bb70-d666a1e90940" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_43270ec2-276a-4aa5-a860-f14dfca0aae5" xlink:to="loc_ppl_KentuckyUtilitiesCompanyMember_76cd4f7c-0617-4fdb-bb70-d666a1e90940" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_cfd03006-3c2d-43b1-88fc-f04781a7cc45" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_9dbb7765-b44a-4837-bbcb-59f48205c0df" xlink:to="loc_srt_RangeAxis_cfd03006-3c2d-43b1-88fc-f04781a7cc45" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_cfd03006-3c2d-43b1-88fc-f04781a7cc45_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_cfd03006-3c2d-43b1-88fc-f04781a7cc45" xlink:to="loc_srt_RangeMember_cfd03006-3c2d-43b1-88fc-f04781a7cc45_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_747d845c-b573-4406-8d4c-5d6261e50148" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_cfd03006-3c2d-43b1-88fc-f04781a7cc45" xlink:to="loc_srt_RangeMember_747d845c-b573-4406-8d4c-5d6261e50148" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_d06b5b71-a6dc-48a4-9419-54117dd9791c" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_747d845c-b573-4406-8d4c-5d6261e50148" xlink:to="loc_srt_MinimumMember_d06b5b71-a6dc-48a4-9419-54117dd9791c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_bf90d558-c0c0-47f5-ad2d-066897c34a6a" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_747d845c-b573-4406-8d4c-5d6261e50148" xlink:to="loc_srt_MaximumMember_bf90d558-c0c0-47f5-ad2d-066897c34a6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCostAbstract_17d27a42-5824-4f04-ad4d-44526fca9dfd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LeaseCostAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_c5dc109a-243a-4b4e-80c0-6660a06cc3a3" xlink:to="loc_us-gaap_LeaseCostAbstract_17d27a42-5824-4f04-ad4d-44526fca9dfd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_3f2aaa41-bdc8-44dc-bef6-e80972182dc5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_c5dc109a-243a-4b4e-80c0-6660a06cc3a3" xlink:to="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_3f2aaa41-bdc8-44dc-bef6-e80972182dc5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAndLiabilitiesLesseeAbstract_3b83a20d-9d08-47c2-953d-e9fba6b11d4d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsAndLiabilitiesLesseeAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_c5dc109a-243a-4b4e-80c0-6660a06cc3a3" xlink:to="loc_us-gaap_AssetsAndLiabilitiesLesseeAbstract_3b83a20d-9d08-47c2-953d-e9fba6b11d4d" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/LeasesLessorDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#LeasesLessorDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/LeasesLessorDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorLeaseDescriptionLineItems_7fe3db4a-b748-4a36-86e3-e4b09f28b781" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LessorLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorLeaseDescriptionTable_607f6b18-35ea-4955-8f44-d8461a335a14" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LessorLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LessorLeaseDescriptionLineItems_7fe3db4a-b748-4a36-86e3-e4b09f28b781" xlink:to="loc_us-gaap_LessorLeaseDescriptionTable_607f6b18-35ea-4955-8f44-d8461a335a14" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_5086868e-ec46-45b4-ab8b-3fc282db0409" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LessorLeaseDescriptionTable_607f6b18-35ea-4955-8f44-d8461a335a14" xlink:to="loc_dei_LegalEntityAxis_5086868e-ec46-45b4-ab8b-3fc282db0409" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5086868e-ec46-45b4-ab8b-3fc282db0409_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_5086868e-ec46-45b4-ab8b-3fc282db0409" xlink:to="loc_dei_EntityDomain_5086868e-ec46-45b4-ab8b-3fc282db0409_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3eba4159-e388-4d60-a72b-c7a1523b1d40" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_5086868e-ec46-45b4-ab8b-3fc282db0409" xlink:to="loc_dei_EntityDomain_3eba4159-e388-4d60-a72b-c7a1523b1d40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_ac0f5cd9-6f87-4d54-8e89-ed79f74fce49" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_3eba4159-e388-4d60-a72b-c7a1523b1d40" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_ac0f5cd9-6f87-4d54-8e89-ed79f74fce49" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_f693c82a-ed96-48a6-8160-a66d0d11ccc5" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_3eba4159-e388-4d60-a72b-c7a1523b1d40" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_f693c82a-ed96-48a6-8160-a66d0d11ccc5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_c8cf4b64-fb71-458d-8fd5-4ad9204e0737" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LessorLeaseDescriptionTable_607f6b18-35ea-4955-8f44-d8461a335a14" xlink:to="loc_ppl_ByCompanyAxis_c8cf4b64-fb71-458d-8fd5-4ad9204e0737" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_c8cf4b64-fb71-458d-8fd5-4ad9204e0737_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_c8cf4b64-fb71-458d-8fd5-4ad9204e0737" xlink:to="loc_ppl_ByCompanyDomain_c8cf4b64-fb71-458d-8fd5-4ad9204e0737_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_28387db5-58c0-4094-8237-df71bce511a3" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_c8cf4b64-fb71-458d-8fd5-4ad9204e0737" xlink:to="loc_ppl_ByCompanyDomain_28387db5-58c0-4094-8237-df71bce511a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_2bdb379d-9c48-4e1f-92a4-9757bdf55c8d" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_28387db5-58c0-4094-8237-df71bce511a3" xlink:to="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_2bdb379d-9c48-4e1f-92a4-9757bdf55c8d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_61f88599-3e39-42a3-b8d4-d0205884c05d" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_28387db5-58c0-4094-8237-df71bce511a3" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_61f88599-3e39-42a3-b8d4-d0205884c05d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCompanyMember_f7887cb5-c3f1-473a-bad8-dbd3a7cf7e68" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_28387db5-58c0-4094-8237-df71bce511a3" xlink:to="loc_ppl_KentuckyUtilitiesCompanyMember_f7887cb5-c3f1-473a-bad8-dbd3a7cf7e68" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/AcquisitionsDevelopmentandDivestituresDiscontinuedOperationsDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#AcquisitionsDevelopmentandDivestituresDiscontinuedOperationsDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/AcquisitionsDevelopmentandDivestituresDiscontinuedOperationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8736ecb6-78cd-4946-bcb8-d0a0ced22848" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_68efb2e8-dbd9-4d36-afa5-a34c352c6fb9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8736ecb6-78cd-4946-bcb8-d0a0ced22848" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_68efb2e8-dbd9-4d36-afa5-a34c352c6fb9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_a7069934-5591-470d-a800-8e8be4dfe254" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_68efb2e8-dbd9-4d36-afa5-a34c352c6fb9" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_a7069934-5591-470d-a800-8e8be4dfe254" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_a7069934-5591-470d-a800-8e8be4dfe254_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_a7069934-5591-470d-a800-8e8be4dfe254" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_a7069934-5591-470d-a800-8e8be4dfe254_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_711c824e-775b-497c-9b5a-376a3eb87838" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_a7069934-5591-470d-a800-8e8be4dfe254" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_711c824e-775b-497c-9b5a-376a3eb87838" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationsHeldforsaleMember_637ded86-815e-408a-8a50-716f7544e2d3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DiscontinuedOperationsHeldforsaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_711c824e-775b-497c-9b5a-376a3eb87838" xlink:to="loc_us-gaap_DiscontinuedOperationsHeldforsaleMember_637ded86-815e-408a-8a50-716f7544e2d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_99c17f45-796f-4e79-87f9-140db3b795b4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DiscontinuedOperationsDisposedOfBySaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_711c824e-775b-497c-9b5a-376a3eb87838" xlink:to="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_99c17f45-796f-4e79-87f9-140db3b795b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_ba579114-b08a-41a8-a7bb-3b65ab22a0e4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_711c824e-775b-497c-9b5a-376a3eb87838" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_ba579114-b08a-41a8-a7bb-3b65ab22a0e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_36d27688-5e72-4f8f-8bed-9e9fccb89a90" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_68efb2e8-dbd9-4d36-afa5-a34c352c6fb9" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_36d27688-5e72-4f8f-8bed-9e9fccb89a90" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_36d27688-5e72-4f8f-8bed-9e9fccb89a90_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_36d27688-5e72-4f8f-8bed-9e9fccb89a90" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_36d27688-5e72-4f8f-8bed-9e9fccb89a90_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_200248f7-47fa-4338-9083-1e27f5a62adc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_36d27688-5e72-4f8f-8bed-9e9fccb89a90" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_200248f7-47fa-4338-9083-1e27f5a62adc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_WPDMember_13a56eec-3d02-44cd-a7b6-c0c00b6acede" xlink:href="ppl-20250630.xsd#ppl_WPDMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_200248f7-47fa-4338-9083-1e27f5a62adc" xlink:to="loc_ppl_WPDMember_13a56eec-3d02-44cd-a7b6-c0c00b6acede" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SafariHoldingsLLCConsolidatedMember_c2530325-402b-4a8e-bc89-6df274491deb" xlink:href="ppl-20250630.xsd#ppl_SafariHoldingsLLCConsolidatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_200248f7-47fa-4338-9083-1e27f5a62adc" xlink:to="loc_ppl_SafariHoldingsLLCConsolidatedMember_c2530325-402b-4a8e-bc89-6df274491deb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDisclosuresAbstract_c2db4cab-c9fd-409c-b382-6130db1a6a4d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDisclosuresAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8736ecb6-78cd-4946-bcb8-d0a0ced22848" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDisclosuresAbstract_c2db4cab-c9fd-409c-b382-6130db1a6a4d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_db1bfc65-c19c-4137-9dcb-20e46b5924fa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromDivestitureOfBusinesses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDisclosuresAbstract_c2db4cab-c9fd-409c-b382-6130db1a6a4d" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_db1bfc65-c19c-4137-9dcb-20e46b5924fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ProceedsFromDailyDividendDivestitureOfBusiness_3b80cd69-d225-4e75-8de6-2de3f9c1a740" xlink:href="ppl-20250630.xsd#ppl_ProceedsFromDailyDividendDivestitureOfBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDisclosuresAbstract_c2db4cab-c9fd-409c-b382-6130db1a6a4d" xlink:to="loc_ppl_ProceedsFromDailyDividendDivestitureOfBusiness_3b80cd69-d225-4e75-8de6-2de3f9c1a740" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_8dd3f04b-7ca6-477c-91ec-231aef3cdac6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDisclosuresAbstract_c2db4cab-c9fd-409c-b382-6130db1a6a4d" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_8dd3f04b-7ca6-477c-91ec-231aef3cdac6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisposalGroupIncludingDiscontinuedOperationCarryingValue_77c3ddd4-8178-40d2-8b60-7f730f9aa4bd" xlink:href="ppl-20250630.xsd#ppl_DisposalGroupIncludingDiscontinuedOperationCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDisclosuresAbstract_c2db4cab-c9fd-409c-b382-6130db1a6a4d" xlink:to="loc_ppl_DisposalGroupIncludingDiscontinuedOperationCarryingValue_77c3ddd4-8178-40d2-8b60-7f730f9aa4bd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AdditionalProceedsFromDivestitureOfBusinessNotIncludedInSellingPrice_b45f8676-9cb1-4fc5-9651-d1d32047fa48" xlink:href="ppl-20250630.xsd#ppl_AdditionalProceedsFromDivestitureOfBusinessNotIncludedInSellingPrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDisclosuresAbstract_c2db4cab-c9fd-409c-b382-6130db1a6a4d" xlink:to="loc_ppl_AdditionalProceedsFromDivestitureOfBusinessNotIncludedInSellingPrice_b45f8676-9cb1-4fc5-9651-d1d32047fa48" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfDisposalGroupNetOfTax_0ee6f2b5-14df-40d9-81bb-b53a4d6c55ad" xlink:href="ppl-20250630.xsd#ppl_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfDisposalGroupNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDisclosuresAbstract_c2db4cab-c9fd-409c-b382-6130db1a6a4d" xlink:to="loc_ppl_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfDisposalGroupNetOfTax_0ee6f2b5-14df-40d9-81bb-b53a4d6c55ad" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GainLossOnDispositionOfBusinessNetOfTax_cde4302f-5581-4294-bb29-75c0f9d96b2f" xlink:href="ppl-20250630.xsd#ppl_GainLossOnDispositionOfBusinessNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDisclosuresAbstract_c2db4cab-c9fd-409c-b382-6130db1a6a4d" xlink:to="loc_ppl_GainLossOnDispositionOfBusinessNetOfTax_cde4302f-5581-4294-bb29-75c0f9d96b2f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyExchangeRateTranslation1_7cf60431-18d1-47df-906a-3be09e942b92" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignCurrencyExchangeRateTranslation1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDisclosuresAbstract_c2db4cab-c9fd-409c-b382-6130db1a6a4d" xlink:to="loc_us-gaap_ForeignCurrencyExchangeRateTranslation1_7cf60431-18d1-47df-906a-3be09e942b92" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_3381b925-8ee7-46c5-852e-beecd21591ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8736ecb6-78cd-4946-bcb8-d0a0ced22848" xlink:to="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_3381b925-8ee7-46c5-852e-beecd21591ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_8b740186-d437-4176-9a1a-57e74c1ddded" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_3381b925-8ee7-46c5-852e-beecd21591ed" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_8b740186-d437-4176-9a1a-57e74c1ddded" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense_913ff09b-66e8-4bc3-af1a-c63d533bf178" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_3381b925-8ee7-46c5-852e-beecd21591ed" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense_913ff09b-66e8-4bc3-af1a-c63d533bf178" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpenseNet_42aa3f6a-e651-4cfe-9351-eda461dabade" xlink:href="ppl-20250630.xsd#ppl_DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_3381b925-8ee7-46c5-852e-beecd21591ed" xlink:to="loc_ppl_DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpenseNet_42aa3f6a-e651-4cfe-9351-eda461dabade" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense_5ef5ef77-715a-430e-9926-121802138016" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_3381b925-8ee7-46c5-852e-beecd21591ed" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense_5ef5ef77-715a-430e-9926-121802138016" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_61ce5ea0-4647-4156-bc3f-cb0e9e8a504c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_3381b925-8ee7-46c5-852e-beecd21591ed" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_61ce5ea0-4647-4156-bc3f-cb0e9e8a504c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_476abf2b-d018-4d76-8bbf-791235795330" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_92bb454d-e5b8-40c2-bf58-01bbac4c3d32" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_3381b925-8ee7-46c5-852e-beecd21591ed" xlink:to="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_92bb454d-e5b8-40c2-bf58-01bbac4c3d32" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_bb878352-8dac-4b12-82ea-f1b779f65ffa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_3381b925-8ee7-46c5-852e-beecd21591ed" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_bb878352-8dac-4b12-82ea-f1b779f65ffa" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisposalGroupIncludingDiscontinuedOperationIncomeTaxExpenseAttributableToRealizationOfBookTaxOutsideBasisDomestic_bee5195a-f4d4-4d73-9c8f-3697925755ce" xlink:href="ppl-20250630.xsd#ppl_DisposalGroupIncludingDiscontinuedOperationIncomeTaxExpenseAttributableToRealizationOfBookTaxOutsideBasisDomestic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_3381b925-8ee7-46c5-852e-beecd21591ed" xlink:to="loc_ppl_DisposalGroupIncludingDiscontinuedOperationIncomeTaxExpenseAttributableToRealizationOfBookTaxOutsideBasisDomestic_bee5195a-f4d4-4d73-9c8f-3697925755ce" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisposalGroupIncludingDiscontinuedOperationIncomeTaxExpenseAttributableToRealizationOfBookTaxOutsideBasisForeign_43d63867-8054-4dd6-af7f-5a1f26656fd0" xlink:href="ppl-20250630.xsd#ppl_DisposalGroupIncludingDiscontinuedOperationIncomeTaxExpenseAttributableToRealizationOfBookTaxOutsideBasisForeign"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_3381b925-8ee7-46c5-852e-beecd21591ed" xlink:to="loc_ppl_DisposalGroupIncludingDiscontinuedOperationIncomeTaxExpenseAttributableToRealizationOfBookTaxOutsideBasisForeign_43d63867-8054-4dd6-af7f-5a1f26656fd0" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8736ecb6-78cd-4946-bcb8-d0a0ced22848" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_fe9b5c01-3df7-4397-9e99-0fa2a3078d86" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_fe9b5c01-3df7-4397-9e99-0fa2a3078d86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet_29c5a3dc-475a-40c4-972b-1ed386be1c97" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet_29c5a3dc-475a-40c4-972b-1ed386be1c97" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisposalGroupIncludingDiscontinuedOperationDerivativeInstrumentsAndHedgesAssets_783d9906-2255-4b04-926a-63bf07096340" xlink:href="ppl-20250630.xsd#ppl_DisposalGroupIncludingDiscontinuedOperationDerivativeInstrumentsAndHedgesAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_ppl_DisposalGroupIncludingDiscontinuedOperationDerivativeInstrumentsAndHedgesAssets_783d9906-2255-4b04-926a-63bf07096340" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentCurrent_96c56beb-b3f4-42cb-89b4-e1a1d910964b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentCurrent_96c56beb-b3f4-42cb-89b4-e1a1d910964b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillCurrent_f8821aa4-897d-4f7b-baf6-299f047d1648" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillCurrent_f8821aa4-897d-4f7b-baf6-299f047d1648" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsCurrent_e2520e5f-7028-40ad-ae11-3fc80a6fa9cd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsCurrent_e2520e5f-7028-40ad-ae11-3fc80a6fa9cd" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisposalGroupIncludingDiscontinuedOperationAssetsForPlanBenefitsDefinedBenefitPlan_26e3c51b-a04c-4c91-a580-381b760944a6" xlink:href="ppl-20250630.xsd#ppl_DisposalGroupIncludingDiscontinuedOperationAssetsForPlanBenefitsDefinedBenefitPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_ppl_DisposalGroupIncludingDiscontinuedOperationAssetsForPlanBenefitsDefinedBenefitPlan_26e3c51b-a04c-4c91-a580-381b760944a6" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets_29fe652a-a34b-4311-abf4-af7d42734e4b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets_29fe652a-a34b-4311-abf4-af7d42734e4b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_009165bd-1853-4d2f-b487-684c0bc6ca32" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_009165bd-1853-4d2f-b487-684c0bc6ca32" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisposalGroupIncludingDiscontinuedOperationShortTermDebtAndLongTermDebtCurrentMaturities_b3edde8d-07bf-4712-88ed-88a682633121" xlink:href="ppl-20250630.xsd#ppl_DisposalGroupIncludingDiscontinuedOperationShortTermDebtAndLongTermDebtCurrentMaturities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_ppl_DisposalGroupIncludingDiscontinuedOperationShortTermDebtAndLongTermDebtCurrentMaturities_b3edde8d-07bf-4712-88ed-88a682633121" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayable_e4e58844-b9b9-4257-a982-d51f436fb8f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayable_e4e58844-b9b9-4257-a982-d51f436fb8f0" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisposalGroupIncludingDiscontinuedOperationCustomerDeposits_703c7dba-62c0-4d32-a553-6a61aed21eba" xlink:href="ppl-20250630.xsd#ppl_DisposalGroupIncludingDiscontinuedOperationCustomerDeposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_ppl_DisposalGroupIncludingDiscontinuedOperationCustomerDeposits_703c7dba-62c0-4d32-a553-6a61aed21eba" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisposalGroupIncludingDiscontinuedOperationAccruedInterest_e07af1c3-37e2-45f4-be23-85d4b94f97ce" xlink:href="ppl-20250630.xsd#ppl_DisposalGroupIncludingDiscontinuedOperationAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_ppl_DisposalGroupIncludingDiscontinuedOperationAccruedInterest_e07af1c3-37e2-45f4-be23-85d4b94f97ce" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisposalGroupIncludingDiscontinuedOperationLongTermDebtExcludingCurrentMaturities_e29670a7-3e5c-4219-8a16-9b10feef8849" xlink:href="ppl-20250630.xsd#ppl_DisposalGroupIncludingDiscontinuedOperationLongTermDebtExcludingCurrentMaturities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_ppl_DisposalGroupIncludingDiscontinuedOperationLongTermDebtExcludingCurrentMaturities_e29670a7-3e5c-4219-8a16-9b10feef8849" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities_827f400e-65f1-4e7e-a409-c51d04add35f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities_827f400e-65f1-4e7e-a409-c51d04add35f" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisposalGroupIncludingDiscontinuedOperationDerivativeInstrumentsAndHedgesLiabilities_742105b9-de00-4bf2-8e2a-6d80d442d3f5" xlink:href="ppl-20250630.xsd#ppl_DisposalGroupIncludingDiscontinuedOperationDerivativeInstrumentsAndHedgesLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_ppl_DisposalGroupIncludingDiscontinuedOperationDerivativeInstrumentsAndHedgesLiabilities_742105b9-de00-4bf2-8e2a-6d80d442d3f5" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities_44c31fd7-c98c-4b9e-9a13-360ea1ddd75b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities_44c31fd7-c98c-4b9e-9a13-360ea1ddd75b" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_7f38cd77-fdf4-4e0b-958c-1deccc54377d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_7f38cd77-fdf4-4e0b-958c-1deccc54377d" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisposalGroupIncludingDiscontinuedOperationNetAssets_72c7e5d6-7802-4031-9d8b-79ea95aafde7" xlink:href="ppl-20250630.xsd#ppl_DisposalGroupIncludingDiscontinuedOperationNetAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_ppl_DisposalGroupIncludingDiscontinuedOperationNetAssets_72c7e5d6-7802-4031-9d8b-79ea95aafde7" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_0f6f3d26-e7fc-4137-9685-d9cbb3be55d6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax_eb17a199-95c1-4405-8704-258049412297" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_3f915fe0-b572-4d0c-bdd3-f4a22b9b3f43" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax_eb17a199-95c1-4405-8704-258049412297" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfDisposalGroupNetOfTax_c7967d27-9c0f-44f0-b34f-61027bff9213" xlink:href="ppl-20250630.xsd#ppl_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfDisposalGroupNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NetProceedsFromDivestitureOfBusinesses_ccc17f0a-4c9f-428b-ad45-0a575ea99254" xlink:href="ppl-20250630.xsd#ppl_NetProceedsFromDivestitureOfBusinesses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8736ecb6-78cd-4946-bcb8-d0a0ced22848" xlink:to="loc_ppl_NetProceedsFromDivestitureOfBusinesses_ccc17f0a-4c9f-428b-ad45-0a575ea99254" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_601d3458-104f-45d2-9ee4-5971500c5236" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_705873c0-d1a5-45a3-8845-1d2559e3fab1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_601d3458-104f-45d2-9ee4-5971500c5236" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_705873c0-d1a5-45a3-8845-1d2559e3fab1" xlink:type="arc" order="2" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_d2c9811b-f673-4b8e-a4ae-2dfb9913b2f3" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_705873c0-d1a5-45a3-8845-1d2559e3fab1" xlink:to="loc_ppl_ByCompanyAxis_d2c9811b-f673-4b8e-a4ae-2dfb9913b2f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_d2c9811b-f673-4b8e-a4ae-2dfb9913b2f3_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_d2c9811b-f673-4b8e-a4ae-2dfb9913b2f3" xlink:to="loc_ppl_ByCompanyDomain_d2c9811b-f673-4b8e-a4ae-2dfb9913b2f3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_4c286261-bb0a-4fa3-8118-a9f1ff5a47d3" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_d2c9811b-f673-4b8e-a4ae-2dfb9913b2f3" xlink:to="loc_ppl_ByCompanyDomain_4c286261-bb0a-4fa3-8118-a9f1ff5a47d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandEnergyMember_456242b8-faeb-44f4-ae2c-36f8940803a3" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandEnergyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_4c286261-bb0a-4fa3-8118-a9f1ff5a47d3" xlink:to="loc_ppl_RhodeIslandEnergyMember_456242b8-faeb-44f4-ae2c-36f8940803a3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonrecurringIncomeExpense_fae9e3d0-be40-489d-8fb4-c8b6f134e5fa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonrecurringIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_601d3458-104f-45d2-9ee4-5971500c5236" xlink:to="loc_us-gaap_OtherNonrecurringIncomeExpense_fae9e3d0-be40-489d-8fb4-c8b6f134e5fa" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/AcquisitionsDevelopmentandDivestituresDevelopmentDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#AcquisitionsDevelopmentandDivestituresDevelopmentDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/AcquisitionsDevelopmentandDivestituresDevelopmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_a5a3ebad-af23-425e-8b68-dc05170b8cb5" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_srt_StatementScenarioAxis_a5a3ebad-af23-425e-8b68-dc05170b8cb5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_a5a3ebad-af23-425e-8b68-dc05170b8cb5_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_a5a3ebad-af23-425e-8b68-dc05170b8cb5" xlink:to="loc_srt_ScenarioUnspecifiedDomain_a5a3ebad-af23-425e-8b68-dc05170b8cb5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_d3eca8fc-7478-46f5-a279-8720b388e3ae" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_a5a3ebad-af23-425e-8b68-dc05170b8cb5" xlink:to="loc_srt_ScenarioUnspecifiedDomain_d3eca8fc-7478-46f5-a279-8720b388e3ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_e046735c-d932-4399-9018-ea03e7aceb25" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_d3eca8fc-7478-46f5-a279-8720b388e3ae" xlink:to="loc_srt_ScenarioForecastMember_e046735c-d932-4399-9018-ea03e7aceb25" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_1f5d1e85-bfd7-4d78-b4ea-d2790ac1a3ad" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_ppl_ByCompanyAxis_1f5d1e85-bfd7-4d78-b4ea-d2790ac1a3ad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_1f5d1e85-bfd7-4d78-b4ea-d2790ac1a3ad_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_1f5d1e85-bfd7-4d78-b4ea-d2790ac1a3ad" xlink:to="loc_ppl_ByCompanyDomain_1f5d1e85-bfd7-4d78-b4ea-d2790ac1a3ad_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_999f1bbb-2984-4a99-bbcc-418af65904aa" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_1f5d1e85-bfd7-4d78-b4ea-d2790ac1a3ad" xlink:to="loc_ppl_ByCompanyDomain_999f1bbb-2984-4a99-bbcc-418af65904aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandEnergyMember_8d7b3896-3827-46e0-a95d-5e2037cf0ff7" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandEnergyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_999f1bbb-2984-4a99-bbcc-418af65904aa" xlink:to="loc_ppl_RhodeIslandEnergyMember_8d7b3896-3827-46e0-a95d-5e2037cf0ff7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SafariHoldingsLLCConsolidatedMember_89df7d52-3f05-44a6-b6e7-29a643c4ce59" xlink:href="ppl-20250630.xsd#ppl_SafariHoldingsLLCConsolidatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_999f1bbb-2984-4a99-bbcc-418af65904aa" xlink:to="loc_ppl_SafariHoldingsLLCConsolidatedMember_89df7d52-3f05-44a6-b6e7-29a643c4ce59" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_d8fe8536-cfbf-409b-92b3-ef1c72091e97" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_999f1bbb-2984-4a99-bbcc-418af65904aa" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_d8fe8536-cfbf-409b-92b3-ef1c72091e97" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCompanyMember_c49c8eaf-60c7-4acf-9b13-c1b8608de7ce" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_999f1bbb-2984-4a99-bbcc-418af65904aa" xlink:to="loc_ppl_KentuckyUtilitiesCompanyMember_c49c8eaf-60c7-4acf-9b13-c1b8608de7ce" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_6aa08115-f836-4618-90bc-76de1ea61efb" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_999f1bbb-2984-4a99-bbcc-418af65904aa" xlink:to="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_6aa08115-f836-4618-90bc-76de1ea61efb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_cccb02cb-25cb-450b-b280-2159da748173" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_cccb02cb-25cb-450b-b280-2159da748173" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_cccb02cb-25cb-450b-b280-2159da748173_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_cccb02cb-25cb-450b-b280-2159da748173" xlink:to="loc_us-gaap_SegmentDomain_cccb02cb-25cb-450b-b280-2159da748173_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_3e20a9e6-7ec3-4f2b-899e-4bdfd61d9d98" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_cccb02cb-25cb-450b-b280-2159da748173" xlink:to="loc_us-gaap_SegmentDomain_3e20a9e6-7ec3-4f2b-899e-4bdfd61d9d98" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandRegulatedMember_aac4d180-e7e4-4e49-8e28-0c99d779b9f7" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandRegulatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3e20a9e6-7ec3-4f2b-899e-4bdfd61d9d98" xlink:to="loc_ppl_RhodeIslandRegulatedMember_aac4d180-e7e4-4e49-8e28-0c99d779b9f7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateMember_9f0c621b-cdb5-4a71-9796-a373338a075e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3e20a9e6-7ec3-4f2b-899e-4bdfd61d9d98" xlink:to="loc_us-gaap_CorporateMember_9f0c621b-cdb5-4a71-9796-a373338a075e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_63e83dd0-cbba-4b93-b2d7-75476a5f960a" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MajorCustomersAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_srt_MajorCustomersAxis_63e83dd0-cbba-4b93-b2d7-75476a5f960a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_63e83dd0-cbba-4b93-b2d7-75476a5f960a_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_63e83dd0-cbba-4b93-b2d7-75476a5f960a" xlink:to="loc_srt_NameOfMajorCustomerDomain_63e83dd0-cbba-4b93-b2d7-75476a5f960a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_90b3d8e9-8dfe-4036-aeea-685b044f7702" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_63e83dd0-cbba-4b93-b2d7-75476a5f960a" xlink:to="loc_srt_NameOfMajorCustomerDomain_90b3d8e9-8dfe-4036-aeea-685b044f7702" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ElectricCustomerMember_fe3013c7-dd71-41d6-bffb-bfebf5a08f8f" xlink:href="ppl-20250630.xsd#ppl_ElectricCustomerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_90b3d8e9-8dfe-4036-aeea-685b044f7702" xlink:to="loc_ppl_ElectricCustomerMember_fe3013c7-dd71-41d6-bffb-bfebf5a08f8f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NaturalGasCustomerMember_554881e7-ffa9-4ce9-97ff-85b32313b579" xlink:href="ppl-20250630.xsd#ppl_NaturalGasCustomerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_90b3d8e9-8dfe-4036-aeea-685b044f7702" xlink:to="loc_ppl_NaturalGasCustomerMember_554881e7-ffa9-4ce9-97ff-85b32313b579" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_45aa877b-d049-49ad-b241-439f42dfec5f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_45aa877b-d049-49ad-b241-439f42dfec5f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_45aa877b-d049-49ad-b241-439f42dfec5f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_45aa877b-d049-49ad-b241-439f42dfec5f" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_45aa877b-d049-49ad-b241-439f42dfec5f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_2c7b18fe-32a9-4370-9ff2-e04adabb224d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_45aa877b-d049-49ad-b241-439f42dfec5f" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_2c7b18fe-32a9-4370-9ff2-e04adabb224d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpensesMember_00bb202d-20ee-4409-a427-e04b50adb8fc" xlink:href="ppl-20250630.xsd#ppl_UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpensesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_2c7b18fe-32a9-4370-9ff2-e04adabb224d" xlink:to="loc_ppl_UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpensesMember_00bb202d-20ee-4409-a427-e04b50adb8fc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherNonoperatingIncomeExpenseDescriptionAxis_d0fa971b-974f-40ac-aca4-0b0937f69f79" xlink:href="ppl-20250630.xsd#ppl_OtherNonoperatingIncomeExpenseDescriptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_ppl_OtherNonoperatingIncomeExpenseDescriptionAxis_d0fa971b-974f-40ac-aca4-0b0937f69f79" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherNonoperatingIncomeExpenseDescriptionDomain_d0fa971b-974f-40ac-aca4-0b0937f69f79_default" xlink:href="ppl-20250630.xsd#ppl_OtherNonoperatingIncomeExpenseDescriptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_OtherNonoperatingIncomeExpenseDescriptionAxis_d0fa971b-974f-40ac-aca4-0b0937f69f79" xlink:to="loc_ppl_OtherNonoperatingIncomeExpenseDescriptionDomain_d0fa971b-974f-40ac-aca4-0b0937f69f79_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherNonoperatingIncomeExpenseDescriptionDomain_2f18d572-b63c-4e1b-81ca-c4d4638d5e3c" xlink:href="ppl-20250630.xsd#ppl_OtherNonoperatingIncomeExpenseDescriptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_OtherNonoperatingIncomeExpenseDescriptionAxis_d0fa971b-974f-40ac-aca4-0b0937f69f79" xlink:to="loc_ppl_OtherNonoperatingIncomeExpenseDescriptionDomain_2f18d572-b63c-4e1b-81ca-c4d4638d5e3c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandEnergyTSAMember_3e0ed663-0e01-4885-9c39-e7ae604ef9f2" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandEnergyTSAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherNonoperatingIncomeExpenseDescriptionDomain_2f18d572-b63c-4e1b-81ca-c4d4638d5e3c" xlink:to="loc_ppl_RhodeIslandEnergyTSAMember_3e0ed663-0e01-4885-9c39-e7ae604ef9f2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccrualForRIAGEvaluationFundMember_36c37698-640f-40f6-99be-6dd22989785f" xlink:href="ppl-20250630.xsd#ppl_AccrualForRIAGEvaluationFundMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherNonoperatingIncomeExpenseDescriptionDomain_2f18d572-b63c-4e1b-81ca-c4d4638d5e3c" xlink:to="loc_ppl_AccrualForRIAGEvaluationFundMember_36c37698-640f-40f6-99be-6dd22989785f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccrualForTSAMarkupMember_6129b3b0-b8f9-4993-a0a0-6051f1effce5" xlink:href="ppl-20250630.xsd#ppl_AccrualForTSAMarkupMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherNonoperatingIncomeExpenseDescriptionDomain_2f18d572-b63c-4e1b-81ca-c4d4638d5e3c" xlink:to="loc_ppl_AccrualForTSAMarkupMember_6129b3b0-b8f9-4993-a0a0-6051f1effce5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CommitmentExpenseDescriptionAxis_ccaad3ad-76a4-4d57-8cc4-cae3ccf37fff" xlink:href="ppl-20250630.xsd#ppl_CommitmentExpenseDescriptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_ppl_CommitmentExpenseDescriptionAxis_ccaad3ad-76a4-4d57-8cc4-cae3ccf37fff" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CommitmentExpenseDescriptionDomain_ccaad3ad-76a4-4d57-8cc4-cae3ccf37fff_default" xlink:href="ppl-20250630.xsd#ppl_CommitmentExpenseDescriptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_CommitmentExpenseDescriptionAxis_ccaad3ad-76a4-4d57-8cc4-cae3ccf37fff" xlink:to="loc_ppl_CommitmentExpenseDescriptionDomain_ccaad3ad-76a4-4d57-8cc4-cae3ccf37fff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CommitmentExpenseDescriptionDomain_6d142eae-9aca-4455-a42a-52ba8193ee65" xlink:href="ppl-20250630.xsd#ppl_CommitmentExpenseDescriptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_CommitmentExpenseDescriptionAxis_ccaad3ad-76a4-4d57-8cc4-cae3ccf37fff" xlink:to="loc_ppl_CommitmentExpenseDescriptionDomain_6d142eae-9aca-4455-a42a-52ba8193ee65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccountsReceivableAndRegulatoryAssetWriteOffMember_aeea3618-5556-4249-9674-6265d1245949" xlink:href="ppl-20250630.xsd#ppl_AccountsReceivableAndRegulatoryAssetWriteOffMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CommitmentExpenseDescriptionDomain_6d142eae-9aca-4455-a42a-52ba8193ee65" xlink:to="loc_ppl_AccountsReceivableAndRegulatoryAssetWriteOffMember_aeea3618-5556-4249-9674-6265d1245949" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccruedExpendituresForTheRIAGAndDecarbonationGoalsMember_f7b06566-b6ec-43dc-af70-3df3f65b7e9d" xlink:href="ppl-20250630.xsd#ppl_AccruedExpendituresForTheRIAGAndDecarbonationGoalsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CommitmentExpenseDescriptionDomain_6d142eae-9aca-4455-a42a-52ba8193ee65" xlink:to="loc_ppl_AccruedExpendituresForTheRIAGAndDecarbonationGoalsMember_f7b06566-b6ec-43dc-af70-3df3f65b7e9d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis_efc8cb5e-4ee7-49bc-bf6b-7b0e56c5085c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis_efc8cb5e-4ee7-49bc-bf6b-7b0e56c5085c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsDomain_efc8cb5e-4ee7-49bc-bf6b-7b0e56c5085c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis_efc8cb5e-4ee7-49bc-bf6b-7b0e56c5085c" xlink:to="loc_us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsDomain_efc8cb5e-4ee7-49bc-bf6b-7b0e56c5085c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsDomain_4fa52eee-fa4f-48fe-9355-204ac63cb7a6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis_efc8cb5e-4ee7-49bc-bf6b-7b0e56c5085c" xlink:to="loc_us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsDomain_4fa52eee-fa4f-48fe-9355-204ac63cb7a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TransactionCostsMember_5d09d679-ef8f-48e0-8ca2-2c5bb2548177" xlink:href="ppl-20250630.xsd#ppl_TransactionCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsDomain_4fa52eee-fa4f-48fe-9355-204ac63cb7a6" xlink:to="loc_ppl_TransactionCostsMember_5d09d679-ef8f-48e0-8ca2-2c5bb2548177" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NatureOfSeparateTransactionAxis_95744bad-eeea-462e-8774-5f2d40aa8921" xlink:href="ppl-20250630.xsd#ppl_NatureOfSeparateTransactionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_ppl_NatureOfSeparateTransactionAxis_95744bad-eeea-462e-8774-5f2d40aa8921" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NatureOfSeparateTransactionDomain_95744bad-eeea-462e-8774-5f2d40aa8921_default" xlink:href="ppl-20250630.xsd#ppl_NatureOfSeparateTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_NatureOfSeparateTransactionAxis_95744bad-eeea-462e-8774-5f2d40aa8921" xlink:to="loc_ppl_NatureOfSeparateTransactionDomain_95744bad-eeea-462e-8774-5f2d40aa8921_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NatureOfSeparateTransactionDomain_0b4f530f-3828-4bf4-b93e-86628ca7865c" xlink:href="ppl-20250630.xsd#ppl_NatureOfSeparateTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_NatureOfSeparateTransactionAxis_95744bad-eeea-462e-8774-5f2d40aa8921" xlink:to="loc_ppl_NatureOfSeparateTransactionDomain_0b4f530f-3828-4bf4-b93e-86628ca7865c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AdditionalCostsRelatedToPurchaseAgreedNotToSeekRecoveryMember_b62d69e7-7e30-4978-a03d-7f5bf5016b66" xlink:href="ppl-20250630.xsd#ppl_AdditionalCostsRelatedToPurchaseAgreedNotToSeekRecoveryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_NatureOfSeparateTransactionDomain_0b4f530f-3828-4bf4-b93e-86628ca7865c" xlink:to="loc_ppl_AdditionalCostsRelatedToPurchaseAgreedNotToSeekRecoveryMember_b62d69e7-7e30-4978-a03d-7f5bf5016b66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OpeningBalanceSheetAdjustmentsAxis_b8dbce31-5066-4485-8d6b-6064faaee62d" xlink:href="ppl-20250630.xsd#ppl_OpeningBalanceSheetAdjustmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_ppl_OpeningBalanceSheetAdjustmentsAxis_b8dbce31-5066-4485-8d6b-6064faaee62d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OpeningBalanceSheetAdjustmentsDomain_b8dbce31-5066-4485-8d6b-6064faaee62d_default" xlink:href="ppl-20250630.xsd#ppl_OpeningBalanceSheetAdjustmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_OpeningBalanceSheetAdjustmentsAxis_b8dbce31-5066-4485-8d6b-6064faaee62d" xlink:to="loc_ppl_OpeningBalanceSheetAdjustmentsDomain_b8dbce31-5066-4485-8d6b-6064faaee62d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OpeningBalanceSheetAdjustmentsDomain_afe73926-3a8e-40b8-ae02-216efc1c25d6" xlink:href="ppl-20250630.xsd#ppl_OpeningBalanceSheetAdjustmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_OpeningBalanceSheetAdjustmentsAxis_b8dbce31-5066-4485-8d6b-6064faaee62d" xlink:to="loc_ppl_OpeningBalanceSheetAdjustmentsDomain_afe73926-3a8e-40b8-ae02-216efc1c25d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AdjustmentsIdentifiedInTheThirdQuarterMember_49f2cd3f-bc90-4981-8ffc-526b4e4b6954" xlink:href="ppl-20250630.xsd#ppl_AdjustmentsIdentifiedInTheThirdQuarterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OpeningBalanceSheetAdjustmentsDomain_afe73926-3a8e-40b8-ae02-216efc1c25d6" xlink:to="loc_ppl_AdjustmentsIdentifiedInTheThirdQuarterMember_49f2cd3f-bc90-4981-8ffc-526b4e4b6954" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatoryLiabilitiesAsAResultOfAcquisitionCommitmentsAxis_d3a17f1c-5090-4e5e-b85d-28ffd2e3fd07" xlink:href="ppl-20250630.xsd#ppl_RegulatoryLiabilitiesAsAResultOfAcquisitionCommitmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_ppl_RegulatoryLiabilitiesAsAResultOfAcquisitionCommitmentsAxis_d3a17f1c-5090-4e5e-b85d-28ffd2e3fd07" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatoryLiabilitiesAsAResultOfAcquisitionCommitmentsDomain_d3a17f1c-5090-4e5e-b85d-28ffd2e3fd07_default" xlink:href="ppl-20250630.xsd#ppl_RegulatoryLiabilitiesAsAResultOfAcquisitionCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_RegulatoryLiabilitiesAsAResultOfAcquisitionCommitmentsAxis_d3a17f1c-5090-4e5e-b85d-28ffd2e3fd07" xlink:to="loc_ppl_RegulatoryLiabilitiesAsAResultOfAcquisitionCommitmentsDomain_d3a17f1c-5090-4e5e-b85d-28ffd2e3fd07_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatoryLiabilitiesAsAResultOfAcquisitionCommitmentsDomain_75a32421-1cf9-46e1-9f40-bedf453c91f3" xlink:href="ppl-20250630.xsd#ppl_RegulatoryLiabilitiesAsAResultOfAcquisitionCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_RegulatoryLiabilitiesAsAResultOfAcquisitionCommitmentsAxis_d3a17f1c-5090-4e5e-b85d-28ffd2e3fd07" xlink:to="loc_ppl_RegulatoryLiabilitiesAsAResultOfAcquisitionCommitmentsDomain_75a32421-1cf9-46e1-9f40-bedf453c91f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RIPUCRegulatoryLiabilityMember_1c4af542-be47-49e3-b4e1-37c488b53d3d" xlink:href="ppl-20250630.xsd#ppl_RIPUCRegulatoryLiabilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RegulatoryLiabilitiesAsAResultOfAcquisitionCommitmentsDomain_75a32421-1cf9-46e1-9f40-bedf453c91f3" xlink:to="loc_ppl_RIPUCRegulatoryLiabilityMember_1c4af542-be47-49e3-b4e1-37c488b53d3d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_c419d8c8-c1d7-45b6-9908-2ce1904564d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_c419d8c8-c1d7-45b6-9908-2ce1904564d1" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_c419d8c8-c1d7-45b6-9908-2ce1904564d1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_c419d8c8-c1d7-45b6-9908-2ce1904564d1" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_c419d8c8-c1d7-45b6-9908-2ce1904564d1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_694e492b-b668-4fdd-abf5-fb11588af54a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_c419d8c8-c1d7-45b6-9908-2ce1904564d1" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_694e492b-b668-4fdd-abf5-fb11588af54a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_271f6ca4-f516-4bef-8bfc-db6e9eacea27" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_694e492b-b668-4fdd-abf5-fb11588af54a" xlink:to="loc_us-gaap_SubsequentEventMember_271f6ca4-f516-4bef-8bfc-db6e9eacea27" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_775a2a37-1a3a-4790-9efb-de82e2a81cb6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_775a2a37-1a3a-4790-9efb-de82e2a81cb6" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_775a2a37-1a3a-4790-9efb-de82e2a81cb6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_775a2a37-1a3a-4790-9efb-de82e2a81cb6" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_775a2a37-1a3a-4790-9efb-de82e2a81cb6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_745c7821-a72f-4a25-beb5-17bc0b553978" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_775a2a37-1a3a-4790-9efb-de82e2a81cb6" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_745c7821-a72f-4a25-beb5-17bc0b553978" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldForSaleOrDisposedOfBySaleNotDiscontinuedOperationsMember_4a19943b-d641-47cf-96bf-7b0cadede125" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupHeldForSaleOrDisposedOfBySaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_745c7821-a72f-4a25-beb5-17bc0b553978" xlink:to="loc_us-gaap_DisposalGroupHeldForSaleOrDisposedOfBySaleNotDiscontinuedOperationsMember_4a19943b-d641-47cf-96bf-7b0cadede125" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_76993100-2559-4ed8-b0a6-059696b77576" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_745c7821-a72f-4a25-beb5-17bc0b553978" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_76993100-2559-4ed8-b0a6-059696b77576" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_835fc4a1-e1a5-4cbe-8cb5-6af63a8c37ec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_835fc4a1-e1a5-4cbe-8cb5-6af63a8c37ec" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_835fc4a1-e1a5-4cbe-8cb5-6af63a8c37ec_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_835fc4a1-e1a5-4cbe-8cb5-6af63a8c37ec" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_835fc4a1-e1a5-4cbe-8cb5-6af63a8c37ec_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_1169c4a2-f771-43b5-9c07-348b0e11b126" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_835fc4a1-e1a5-4cbe-8cb5-6af63a8c37ec" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_1169c4a2-f771-43b5-9c07-348b0e11b126" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SafariHoldingsLLCConsolidatedMember_c93c30b5-1d7f-4464-bd0a-e156d5a08ff3" xlink:href="ppl-20250630.xsd#ppl_SafariHoldingsLLCConsolidatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_1169c4a2-f771-43b5-9c07-348b0e11b126" xlink:to="loc_ppl_SafariHoldingsLLCConsolidatedMember_c93c30b5-1d7f-4464-bd0a-e156d5a08ff3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_3147403e-f969-4036-8014-702c10a0b78c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_3147403e-f969-4036-8014-702c10a0b78c" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_3147403e-f969-4036-8014-702c10a0b78c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_3147403e-f969-4036-8014-702c10a0b78c" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_3147403e-f969-4036-8014-702c10a0b78c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b74a1ed3-a3f7-4353-aabc-805d6153ac06" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_3147403e-f969-4036-8014-702c10a0b78c" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b74a1ed3-a3f7-4353-aabc-805d6153ac06" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NarragansettElectricMember_d71a83cb-170b-4460-a066-5a843d4bf316" xlink:href="ppl-20250630.xsd#ppl_NarragansettElectricMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b74a1ed3-a3f7-4353-aabc-805d6153ac06" xlink:to="loc_ppl_NarragansettElectricMember_d71a83cb-170b-4460-a066-5a843d4bf316" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_cb01d81d-fce5-4cb5-bfa2-92954851e878" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_0948355d-95c0-4ecb-847d-4a9b15bc4127" xlink:to="loc_dei_LegalEntityAxis_cb01d81d-fce5-4cb5-bfa2-92954851e878" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_cb01d81d-fce5-4cb5-bfa2-92954851e878_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_cb01d81d-fce5-4cb5-bfa2-92954851e878" xlink:to="loc_dei_EntityDomain_cb01d81d-fce5-4cb5-bfa2-92954851e878_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_2d880224-17c7-47f1-ba42-d154abf025ca" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_cb01d81d-fce5-4cb5-bfa2-92954851e878" xlink:to="loc_dei_EntityDomain_2d880224-17c7-47f1-ba42-d154abf025ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_6f9c9b19-8238-4aee-be88-b621f87df058" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2d880224-17c7-47f1-ba42-d154abf025ca" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_6f9c9b19-8238-4aee-be88-b621f87df058" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_c84bc839-9250-4bfe-bf0d-954728188a84" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2d880224-17c7-47f1-ba42-d154abf025ca" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_c84bc839-9250-4bfe-bf0d-954728188a84" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_d437f9f8-8aad-4e77-9537-ebde2fc3c0e6" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2d880224-17c7-47f1-ba42-d154abf025ca" xlink:to="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_d437f9f8-8aad-4e77-9537-ebde2fc3c0e6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationIntegrationRelatedCosts_ebe823ab-e6b1-4234-bcc5-cb97656b30a3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationIntegrationRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationIntegrationRelatedCosts_ebe823ab-e6b1-4234-bcc5-cb97656b30a3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryAssets_67beac81-afa4-4f60-aa36-fc33a0e86843" xlink:href="ppl-20250630.xsd#ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryAssets_67beac81-afa4-4f60-aa36-fc33a0e86843" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PublicUtilitiesCustomerBillCreditAgreementTotal_774867b6-97e9-4b69-8f8f-618cee5641d0" xlink:href="ppl-20250630.xsd#ppl_PublicUtilitiesCustomerBillCreditAgreementTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_PublicUtilitiesCustomerBillCreditAgreementTotal_774867b6-97e9-4b69-8f8f-618cee5641d0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_7b487a5d-7acc-417a-87d9-75db41a5ec94" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_7b487a5d-7acc-417a-87d9-75db41a5ec94" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RICCREFContributionExpense_83a82f19-31fd-4024-b553-421f5b9113b7" xlink:href="ppl-20250630.xsd#ppl_RICCREFContributionExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_RICCREFContributionExpense_83a82f19-31fd-4024-b553-421f5b9113b7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonrecurringIncomeExpense_99a9359e-1a1f-4df7-844f-152f4b4d5b4d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonrecurringIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_OtherNonrecurringIncomeExpense_99a9359e-1a1f-4df7-844f-152f4b4d5b4d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BusinessAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedUnbilledRevenues_7316a26c-ecfa-488d-b789-9352e575c8bb" xlink:href="ppl-20250630.xsd#ppl_BusinessAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedUnbilledRevenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_BusinessAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedUnbilledRevenues_7316a26c-ecfa-488d-b789-9352e575c8bb" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_33f54a0e-fba3-4f75-a13d-b07347541f82" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_33f54a0e-fba3-4f75-a13d-b07347541f82" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets_8992cec7-c63c-45ab-bc94-77f7367c9073" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets_8992cec7-c63c-45ab-bc94-77f7367c9073" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPriceRiskManagementAssets_8db496b0-5f4f-4e1b-a731-44aa0e8d211c" xlink:href="ppl-20250630.xsd#ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPriceRiskManagementAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPriceRiskManagementAssets_8db496b0-5f4f-4e1b-a731-44aa0e8d211c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_3af34086-8937-4cb0-8ae0-64fc070251db" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_3af34086-8937-4cb0-8ae0-64fc070251db" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentRegulatoryAssets_329ad0d9-dd34-4e3b-82be-496f36a97441" xlink:href="ppl-20250630.xsd#ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentRegulatoryAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentRegulatoryAssets_329ad0d9-dd34-4e3b-82be-496f36a97441" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GoodwillBusinessCombination_48ad9928-bf5c-45b3-9ec2-e3f0c17b75c8" xlink:href="ppl-20250630.xsd#ppl_GoodwillBusinessCombination"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_GoodwillBusinessCombination_48ad9928-bf5c-45b3-9ec2-e3f0c17b75c8" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_2279d3d7-6d76-4d08-99af-4763f361ddcc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_2279d3d7-6d76-4d08-99af-4763f361ddcc" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentAssets_7ee243ff-2995-40ae-8a5e-4ab0d19b41d7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentAssets_7ee243ff-2995-40ae-8a5e-4ab0d19b41d7" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccountsReceivableForgivenNet_334371ee-79ba-4fcb-911e-acd203059df5" xlink:href="ppl-20250630.xsd#ppl_AccountsReceivableForgivenNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_AccountsReceivableForgivenNet_334371ee-79ba-4fcb-911e-acd203059df5" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_37aa2f06-144b-4b22-b626-d0126f9920e7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_37aa2f06-144b-4b22-b626-d0126f9920e7" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BusinessCombinationRegulatoryAssetsExpensed_7470c911-360b-4a88-802e-ba7a6f94b9f5" xlink:href="ppl-20250630.xsd#ppl_BusinessCombinationRegulatoryAssetsExpensed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_BusinessCombinationRegulatoryAssetsExpensed_7470c911-360b-4a88-802e-ba7a6f94b9f5" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt_a32eae53-f6d5-4ce8-8ab5-4fdc052de300" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt_a32eae53-f6d5-4ce8-8ab5-4fdc052de300" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AcquisitionCommitmentWriteOffExpenses_82ffa50b-6a98-4e68-b304-c17a26fc7c47" xlink:href="ppl-20250630.xsd#ppl_AcquisitionCommitmentWriteOffExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_AcquisitionCommitmentWriteOffExpenses_82ffa50b-6a98-4e68-b304-c17a26fc7c47" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccountsReceivableForgivenARReserve_13ab3c68-b562-48ab-90d2-d5f3d246bbaf" xlink:href="ppl-20250630.xsd#ppl_AccountsReceivableForgivenARReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_AccountsReceivableForgivenARReserve_13ab3c68-b562-48ab-90d2-d5f3d246bbaf" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_71e8c13a-050f-498a-a51f-fe399f6956b8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_71e8c13a-050f-498a-a51f-fe399f6956b8" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_60b58ef5-3701-46c8-90b3-dbb1f1e72ff5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_60b58ef5-3701-46c8-90b3-dbb1f1e72ff5" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTaxesAccrued_93e92d63-b189-4f79-a9c5-5e27f125a8e8" xlink:href="ppl-20250630.xsd#ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTaxesAccrued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTaxesAccrued_93e92d63-b189-4f79-a9c5-5e27f125a8e8" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsARReserve_aa20e6e5-fde9-41cf-8e67-4421f018c4ea" xlink:href="ppl-20250630.xsd#ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsARReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsARReserve_aa20e6e5-fde9-41cf-8e67-4421f018c4ea" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivablesGross_9abe8cb6-1c8e-4d2c-a7a1-e01c24b37505" xlink:href="ppl-20250630.xsd#ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivablesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivablesGross_9abe8cb6-1c8e-4d2c-a7a1-e01c24b37505" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentRegulatoryLiabilities_b1cf290e-1b85-4889-a13e-553e582f41aa" xlink:href="ppl-20250630.xsd#ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentRegulatoryLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentRegulatoryLiabilities_b1cf290e-1b85-4889-a13e-553e582f41aa" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther_ab148e31-e349-4266-98a5-9b0c7c57383a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther_ab148e31-e349-4266-98a5-9b0c7c57383a" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_8d28f025-2ed4-498e-85c3-7bd77fe5abed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillAcquiredDuringPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_GoodwillAcquiredDuringPeriod_8d28f025-2ed4-498e-85c3-7bd77fe5abed" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentRegulatoryLiabilities_a9df5417-3b8e-4019-a820-c79f9f84ef03" xlink:href="ppl-20250630.xsd#ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentRegulatoryLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentRegulatoryLiabilities_a9df5417-3b8e-4019-a820-c79f9f84ef03" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_61f8268a-6f73-4971-a6cf-f81fa3a49ecd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_61f8268a-6f73-4971-a6cf-f81fa3a49ecd" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities_6319e130-d90a-42d1-aaf3-7bf683eaa3f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities_6319e130-d90a-42d1-aaf3-7bf683eaa3f0" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_0a4066e1-2d61-440e-8528-08ef65cd184e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_0a4066e1-2d61-440e-8528-08ef65cd184e" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_863d7c9b-4897-4651-bfd3-eeb93b1325f2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionsProFormaRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_863d7c9b-4897-4651-bfd3-eeb93b1325f2" xlink:type="arc" order="33"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_0af5a42b-cc78-46a7-9c97-9060c7d77101" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_0af5a42b-cc78-46a7-9c97-9060c7d77101" xlink:type="arc" order="34"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_6671b9bf-fe67-4abe-ab76-26f8964792fa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_6671b9bf-fe67-4abe-ab76-26f8964792fa" xlink:type="arc" order="35"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_4021a8e3-46b3-418b-a80d-60f3c7e3ba18" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_4021a8e3-46b3-418b-a80d-60f3c7e3ba18" xlink:type="arc" order="36"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TransitionServiceAgreementExpense_6d50fd23-d226-4436-8186-8a8b9ee5d7cc" xlink:href="ppl-20250630.xsd#ppl_TransitionServiceAgreementExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_TransitionServiceAgreementExpense_6d50fd23-d226-4436-8186-8a8b9ee5d7cc" xlink:type="arc" order="37"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_66337b39-4d34-463b-ad19-cfbea6b5aa15" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_Goodwill_66337b39-4d34-463b-ad19-cfbea6b5aa15" xlink:type="arc" order="38"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_373a165f-49a8-4742-ab53-d10d152a259d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_373a165f-49a8-4742-ab53-d10d152a259d" xlink:type="arc" order="39"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_8f65e739-d9f0-4b03-8bf2-4e4e743504e8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_8f65e739-d9f0-4b03-8bf2-4e4e743504e8" xlink:type="arc" order="40"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities_a06e8f31-5032-4947-b712-f2b27f27758a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities_a06e8f31-5032-4947-b712-f2b27f27758a" xlink:type="arc" order="41"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccountsReceivableForgivenGross_29649cdc-5e1c-4c20-8c4d-dddcdd6ac109" xlink:href="ppl-20250630.xsd#ppl_AccountsReceivableForgivenGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_AccountsReceivableForgivenGross_29649cdc-5e1c-4c20-8c4d-dddcdd6ac109" xlink:type="arc" order="42"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_f33bc9e2-516e-4699-852c-a46c52c76661" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_Revenues_f33bc9e2-516e-4699-852c-a46c52c76661" xlink:type="arc" order="43"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_60aefb27-e131-443b-9742-eaa30004790b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_NetIncomeLoss_60aefb27-e131-443b-9742-eaa30004790b" xlink:type="arc" order="44"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsExpensesAndLossesRecognized_f4c50062-f12e-4f78-8973-decdd8f8558b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsExpensesAndLossesRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsExpensesAndLossesRecognized_f4c50062-f12e-4f78-8973-decdd8f8558b" xlink:type="arc" order="45"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilities_fcaef699-be3d-4272-9520-ad5359d756bc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_RegulatoryLiabilities_fcaef699-be3d-4272-9520-ad5359d756bc" xlink:type="arc" order="46"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisposalGroupNotIncludingDiscontinuedOperationsAssetsAndLiabilitiesHeldForSale_474aaa88-a97b-4ffa-842c-21c17601e81e" xlink:href="ppl-20250630.xsd#ppl_DisposalGroupNotIncludingDiscontinuedOperationsAssetsAndLiabilitiesHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_DisposalGroupNotIncludingDiscontinuedOperationsAssetsAndLiabilitiesHeldForSale_474aaa88-a97b-4ffa-842c-21c17601e81e" xlink:type="arc" order="47"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DisposalGroupNotIncludingDiscontinuedOperations_e6ccb0da-be9d-44de-a5a8-ca98961dd3ac" xlink:href="ppl-20250630.xsd#ppl_DisposalGroupNotIncludingDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_DisposalGroupNotIncludingDiscontinuedOperations_e6ccb0da-be9d-44de-a5a8-ca98961dd3ac" xlink:type="arc" order="48"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ProceedsFromAssetsHeldForSale_a3a611d6-3bc1-4aca-b282-cdef8b2e1d74" xlink:href="ppl-20250630.xsd#ppl_ProceedsFromAssetsHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_ProceedsFromAssetsHeldForSale_a3a611d6-3bc1-4aca-b282-cdef8b2e1d74" xlink:type="arc" order="49"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillCurrent_a1a386e9-61a6-4cd0-b283-550eb01055e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillCurrent_a1a386e9-61a6-4cd0-b283-550eb01055e6" xlink:type="arc" order="50"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_1a6724bd-d528-4cbb-86ad-d6a5a9dad07d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_1a6724bd-d528-4cbb-86ad-d6a5a9dad07d" xlink:type="arc" order="51"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GainLossOnDispositionOfBusinessNetOfTax_fae8aff9-83e3-414a-8d8a-a3578c1aa307" xlink:href="ppl-20250630.xsd#ppl_GainLossOnDispositionOfBusinessNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_GainLossOnDispositionOfBusinessNetOfTax_fae8aff9-83e3-414a-8d8a-a3578c1aa307" xlink:type="arc" order="52"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IndemnificationForSafariSaleleaseback_2ef7228f-73b2-4bfd-9e88-ee7113704530" xlink:href="ppl-20250630.xsd#ppl_IndemnificationForSafariSaleleaseback"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_IndemnificationForSafariSaleleaseback_2ef7228f-73b2-4bfd-9e88-ee7113704530" xlink:type="arc" order="53"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GuaranteeMaximumExposureForSafariIndemnification_cabdd82f-a30f-45d2-af74-4432e285c2fc" xlink:href="ppl-20250630.xsd#ppl_GuaranteeMaximumExposureForSafariIndemnification"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_GuaranteeMaximumExposureForSafariIndemnification_cabdd82f-a30f-45d2-af74-4432e285c2fc" xlink:type="arc" order="54"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GuaranteeMaximumExposurePPAs_0f303fd6-a6c8-4a64-a14a-5c839467c308" xlink:href="ppl-20250630.xsd#ppl_GuaranteeMaximumExposurePPAs"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_GuaranteeMaximumExposurePPAs_0f303fd6-a6c8-4a64-a14a-5c839467c308" xlink:type="arc" order="55"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GuaranteeToAspenPowerMaximumExposure_f9a67017-de6d-4397-a04d-a4c068198ace" xlink:href="ppl-20250630.xsd#ppl_GuaranteeToAspenPowerMaximumExposure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_GuaranteeToAspenPowerMaximumExposure_f9a67017-de6d-4397-a04d-a4c068198ace" xlink:type="arc" order="56"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_a5591cb4-b2cd-4f8e-83ce-18d4746dbc04" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromDivestitureOfBusinesses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_a5591cb4-b2cd-4f8e-83ce-18d4746dbc04" xlink:type="arc" order="57"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MaximumAggregateLiabilityForSafariIndemnification_68624f66-07ee-4faa-91b4-c1a2a94f8157" xlink:href="ppl-20250630.xsd#ppl_MaximumAggregateLiabilityForSafariIndemnification"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_MaximumAggregateLiabilityForSafariIndemnification_68624f66-07ee-4faa-91b4-c1a2a94f8157" xlink:type="arc" order="58"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PublicUtilitiesCustomerBillCreditAgreementNetOfTax_2b275bd4-7d0b-4d23-bd99-8ac677b178f9" xlink:href="ppl-20250630.xsd#ppl_PublicUtilitiesCustomerBillCreditAgreementNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_PublicUtilitiesCustomerBillCreditAgreementNetOfTax_2b275bd4-7d0b-4d23-bd99-8ac677b178f9" xlink:type="arc" order="59"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ExpectedCapitalCostOfExpansionProject_580c4003-a501-473f-bf42-c0ae42062feb" xlink:href="ppl-20250630.xsd#ppl_ExpectedCapitalCostOfExpansionProject"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_ExpectedCapitalCostOfExpansionProject_580c4003-a501-473f-bf42-c0ae42062feb" xlink:type="arc" order="60"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NewNGCCLGEPlannedOwnershipPercentage_2ac753be-ec69-467d-a526-203640e7f579" xlink:href="ppl-20250630.xsd#ppl_NewNGCCLGEPlannedOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_NewNGCCLGEPlannedOwnershipPercentage_2ac753be-ec69-467d-a526-203640e7f579" xlink:type="arc" order="61"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NewNGCCKUPlannedOwnershipPercentage_5d3f8a1e-57be-4519-b62b-2887ae3c4d9c" xlink:href="ppl-20250630.xsd#ppl_NewNGCCKUPlannedOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_NewNGCCKUPlannedOwnershipPercentage_5d3f8a1e-57be-4519-b62b-2887ae3c4d9c" xlink:type="arc" order="62"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CPCNNGCCCombustionTurbineFacilitiesPower_97d4a418-af60-4ad8-ab60-c06ca22830d1" xlink:href="ppl-20250630.xsd#ppl_CPCNNGCCCombustionTurbineFacilitiesPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dfef9e60-4352-4f3a-8423-f44c1ea4f509" xlink:to="loc_ppl_CPCNNGCCCombustionTurbineFacilitiesPower_97d4a418-af60-4ad8-ab60-c06ca22830d1" xlink:type="arc" order="63"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/DefinedBenefitsDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#DefinedBenefitsDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/DefinedBenefitsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_f1601bd4-2140-454d-a7b9-abe33695b989" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_d6a0f32f-f682-4d68-98b0-5edc8a892f56" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_f1601bd4-2140-454d-a7b9-abe33695b989" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_d6a0f32f-f682-4d68-98b0-5edc8a892f56" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_69d2ee20-44cc-46a2-a38f-634c0508c9a1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_d6a0f32f-f682-4d68-98b0-5edc8a892f56" xlink:to="loc_dei_LegalEntityAxis_69d2ee20-44cc-46a2-a38f-634c0508c9a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_69d2ee20-44cc-46a2-a38f-634c0508c9a1_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_69d2ee20-44cc-46a2-a38f-634c0508c9a1" xlink:to="loc_dei_EntityDomain_69d2ee20-44cc-46a2-a38f-634c0508c9a1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_99d570fb-f05e-4f05-ad6b-faa1dcf4999d" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_69d2ee20-44cc-46a2-a38f-634c0508c9a1" xlink:to="loc_dei_EntityDomain_99d570fb-f05e-4f05-ad6b-faa1dcf4999d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_bf7c6335-e487-4475-9994-ec65612102dc" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_99d570fb-f05e-4f05-ad6b-faa1dcf4999d" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_bf7c6335-e487-4475-9994-ec65612102dc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_67e1e190-61fa-4faa-84e0-f0debe8ecf3e" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_99d570fb-f05e-4f05-ad6b-faa1dcf4999d" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_67e1e190-61fa-4faa-84e0-f0debe8ecf3e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_bb359ebb-71a7-4f16-ae4a-eb2de4b9f20b" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_99d570fb-f05e-4f05-ad6b-faa1dcf4999d" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_bb359ebb-71a7-4f16-ae4a-eb2de4b9f20b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_d4fe16f0-e3de-477c-a6c2-ccc175069404" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_d6a0f32f-f682-4d68-98b0-5edc8a892f56" xlink:to="loc_ppl_ByCompanyAxis_d4fe16f0-e3de-477c-a6c2-ccc175069404" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_d4fe16f0-e3de-477c-a6c2-ccc175069404_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_d4fe16f0-e3de-477c-a6c2-ccc175069404" xlink:to="loc_ppl_ByCompanyDomain_d4fe16f0-e3de-477c-a6c2-ccc175069404_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_f7df3f2a-8bb2-4923-b853-91d84ba8f24f" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_d4fe16f0-e3de-477c-a6c2-ccc175069404" xlink:to="loc_ppl_ByCompanyDomain_f7df3f2a-8bb2-4923-b853-91d84ba8f24f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_9b1f2523-744d-4965-92f0-81f8eec0171a" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_f7df3f2a-8bb2-4923-b853-91d84ba8f24f" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_9b1f2523-744d-4965-92f0-81f8eec0171a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_59ddae48-96ad-42c1-8160-74f3d2e9c3fd" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_f7df3f2a-8bb2-4923-b853-91d84ba8f24f" xlink:to="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_59ddae48-96ad-42c1-8160-74f3d2e9c3fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_WPDMember_93e9939c-b49b-4caf-a507-ec766aa0ba27" xlink:href="ppl-20250630.xsd#ppl_WPDMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_f7df3f2a-8bb2-4923-b853-91d84ba8f24f" xlink:to="loc_ppl_WPDMember_93e9939c-b49b-4caf-a507-ec766aa0ba27" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTaxStatusAxis_7fce3117-dcf5-4f82-a2bb-49b7c13cd0b8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTaxStatusAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_d6a0f32f-f682-4d68-98b0-5edc8a892f56" xlink:to="loc_us-gaap_RetirementPlanTaxStatusAxis_7fce3117-dcf5-4f82-a2bb-49b7c13cd0b8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTaxStatusDomain_7fce3117-dcf5-4f82-a2bb-49b7c13cd0b8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTaxStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTaxStatusAxis_7fce3117-dcf5-4f82-a2bb-49b7c13cd0b8" xlink:to="loc_us-gaap_RetirementPlanTaxStatusDomain_7fce3117-dcf5-4f82-a2bb-49b7c13cd0b8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTaxStatusDomain_63e47ae6-02ed-4785-8e32-f9dac1a8406e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTaxStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTaxStatusAxis_7fce3117-dcf5-4f82-a2bb-49b7c13cd0b8" xlink:to="loc_us-gaap_RetirementPlanTaxStatusDomain_63e47ae6-02ed-4785-8e32-f9dac1a8406e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_98b4e7a2-ffa0-4bff-8abd-29be9f247fa0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_d6a0f32f-f682-4d68-98b0-5edc8a892f56" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_98b4e7a2-ffa0-4bff-8abd-29be9f247fa0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_98b4e7a2-ffa0-4bff-8abd-29be9f247fa0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_98b4e7a2-ffa0-4bff-8abd-29be9f247fa0" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_98b4e7a2-ffa0-4bff-8abd-29be9f247fa0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_89ad075f-d1be-4c5c-8daf-4c5b8a24253d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_98b4e7a2-ffa0-4bff-8abd-29be9f247fa0" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_89ad075f-d1be-4c5c-8daf-4c5b8a24253d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_d1199696-e3d8-420b-a938-3d82d9016709" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_89ad075f-d1be-4c5c-8daf-4c5b8a24253d" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_d1199696-e3d8-420b-a938-3d82d9016709" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_3bd06ee3-3aaf-48e4-a97a-4d916d319157" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_89ad075f-d1be-4c5c-8daf-4c5b8a24253d" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_3bd06ee3-3aaf-48e4-a97a-4d916d319157" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_675135b5-5794-4ce0-b574-b299b58892fa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanSponsorLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_d6a0f32f-f682-4d68-98b0-5edc8a892f56" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_675135b5-5794-4ce0-b574-b299b58892fa" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_675135b5-5794-4ce0-b574-b299b58892fa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_675135b5-5794-4ce0-b574-b299b58892fa" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_675135b5-5794-4ce0-b574-b299b58892fa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_b979fb6c-2cbf-4f3a-ae10-c5b364830b0d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_675135b5-5794-4ce0-b574-b299b58892fa" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_b979fb6c-2cbf-4f3a-ae10-c5b364830b0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticPlanMember_b87833e7-3972-4637-93bf-9baa90832ad8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DomesticPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_b979fb6c-2cbf-4f3a-ae10-c5b364830b0d" xlink:to="loc_us-gaap_DomesticPlanMember_b87833e7-3972-4637-93bf-9baa90832ad8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_4c6fc867-85d8-4ab0-a834-8c5b0aa6c7aa" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DomesticPlanMember_b87833e7-3972-4637-93bf-9baa90832ad8" xlink:to="loc_country_US_4c6fc867-85d8-4ab0-a834-8c5b0aa6c7aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PlanSponsorAxis_871df48c-b72a-4483-8144-7eb7ebc032e2" xlink:href="ppl-20250630.xsd#ppl_PlanSponsorAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_d6a0f32f-f682-4d68-98b0-5edc8a892f56" xlink:to="loc_ppl_PlanSponsorAxis_871df48c-b72a-4483-8144-7eb7ebc032e2" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PlanSponsorDomain_871df48c-b72a-4483-8144-7eb7ebc032e2_default" xlink:href="ppl-20250630.xsd#ppl_PlanSponsorDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_PlanSponsorAxis_871df48c-b72a-4483-8144-7eb7ebc032e2" xlink:to="loc_ppl_PlanSponsorDomain_871df48c-b72a-4483-8144-7eb7ebc032e2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PlanSponsorDomain_2f817d75-f963-4703-b5db-4b8bdf1d52e0" xlink:href="ppl-20250630.xsd#ppl_PlanSponsorDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_PlanSponsorAxis_871df48c-b72a-4483-8144-7eb7ebc032e2" xlink:to="loc_ppl_PlanSponsorDomain_2f817d75-f963-4703-b5db-4b8bdf1d52e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ServicesCompanyAffiliateMember_ed66bd78-8236-4a9e-a87f-913f34aa8ea4" xlink:href="ppl-20250630.xsd#ppl_ServicesCompanyAffiliateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_PlanSponsorDomain_2f817d75-f963-4703-b5db-4b8bdf1d52e0" xlink:to="loc_ppl_ServicesCompanyAffiliateMember_ed66bd78-8236-4a9e-a87f-913f34aa8ea4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_ba3be5fd-5970-4667-a7a5-4e3f919d49fb" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_PlanSponsorDomain_2f817d75-f963-4703-b5db-4b8bdf1d52e0" xlink:to="loc_ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember_ba3be5fd-5970-4667-a7a5-4e3f919d49fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_37662b6a-e758-4066-a9ed-a778233abbd3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_d6a0f32f-f682-4d68-98b0-5edc8a892f56" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_37662b6a-e758-4066-a9ed-a778233abbd3" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_37662b6a-e758-4066-a9ed-a778233abbd3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_37662b6a-e758-4066-a9ed-a778233abbd3" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_37662b6a-e758-4066-a9ed-a778233abbd3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_fe3aa1ab-b324-4271-bfdb-58eac2122cbd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_37662b6a-e758-4066-a9ed-a778233abbd3" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_fe3aa1ab-b324-4271-bfdb-58eac2122cbd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_3da53e5d-3f1f-4a95-bfba-11aaea8975fd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_fe3aa1ab-b324-4271-bfdb-58eac2122cbd" xlink:to="loc_us-gaap_SubsequentEventMember_3da53e5d-3f1f-4a95-bfba-11aaea8975fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_a14ededc-5bfa-4e9f-8fdd-3385c027a633" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_f1601bd4-2140-454d-a7b9-abe33695b989" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_a14ededc-5bfa-4e9f-8fdd-3385c027a633" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_f9e9172c-173f-43df-b116-d23ccb875baa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_a14ededc-5bfa-4e9f-8fdd-3385c027a633" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_f9e9172c-173f-43df-b116-d23ccb875baa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_6229a2d9-7a3c-44e0-b620-0c47e0bfd94a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_a14ededc-5bfa-4e9f-8fdd-3385c027a633" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_6229a2d9-7a3c-44e0-b620-0c47e0bfd94a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_35bd5aff-7938-4681-9252-fa94ed150e00" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_a14ededc-5bfa-4e9f-8fdd-3385c027a633" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_35bd5aff-7938-4681-9252-fa94ed150e00" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AmortizationOfAbstract_296848f2-681a-4c98-9a11-c3ff8e71a71b" xlink:href="ppl-20250630.xsd#ppl_AmortizationOfAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_a14ededc-5bfa-4e9f-8fdd-3385c027a633" xlink:to="loc_ppl_AmortizationOfAbstract_296848f2-681a-4c98-9a11-c3ff8e71a71b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_19adfa04-3bb8-43a3-a400-8187de7f5d3f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AmortizationOfAbstract_296848f2-681a-4c98-9a11-c3ff8e71a71b" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_19adfa04-3bb8-43a3-a400-8187de7f5d3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_be4f196b-3720-4485-aaad-f61dac79a139" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AmortizationOfAbstract_296848f2-681a-4c98-9a11-c3ff8e71a71b" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_be4f196b-3720-4485-aaad-f61dac79a139" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NetPeriodicDefinedBenefitCostsCreditsPriorToSettlements_5ec3670b-7fae-4778-8b14-67abe9de88d7" xlink:href="ppl-20250630.xsd#ppl_NetPeriodicDefinedBenefitCostsCreditsPriorToSettlements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_a14ededc-5bfa-4e9f-8fdd-3385c027a633" xlink:to="loc_ppl_NetPeriodicDefinedBenefitCostsCreditsPriorToSettlements_5ec3670b-7fae-4778-8b14-67abe9de88d7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_ccbd146f-1fe4-470a-b7be-2f429f47034b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_a14ededc-5bfa-4e9f-8fdd-3385c027a633" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_ccbd146f-1fe4-470a-b7be-2f429f47034b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_77133c4f-98b7-415a-b674-6aef7bf5ff17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_a14ededc-5bfa-4e9f-8fdd-3385c027a633" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_77133c4f-98b7-415a-b674-6aef7bf5ff17" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetAmortizationPeriod_288a6459-56ab-4af7-86d3-27900ff54341" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAssetAmortizationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_a14ededc-5bfa-4e9f-8fdd-3385c027a633" xlink:to="loc_us-gaap_RegulatoryAssetAmortizationPeriod_288a6459-56ab-4af7-86d3-27900ff54341" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DefinedBenefitPlanDeferredRecoveryAmount_d185110f-10c8-4f21-abaa-197228adee40" xlink:href="ppl-20250630.xsd#ppl_DefinedBenefitPlanDeferredRecoveryAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_a14ededc-5bfa-4e9f-8fdd-3385c027a633" xlink:to="loc_ppl_DefinedBenefitPlanDeferredRecoveryAmount_d185110f-10c8-4f21-abaa-197228adee40" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NetPeriodicDefinedBenefitCostsAllocatedToSubsidiaryBySponsorNumericAbstract_b99160b7-69e2-48a0-b440-8363574972d2" xlink:href="ppl-20250630.xsd#ppl_NetPeriodicDefinedBenefitCostsAllocatedToSubsidiaryBySponsorNumericAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_f1601bd4-2140-454d-a7b9-abe33695b989" xlink:to="loc_ppl_NetPeriodicDefinedBenefitCostsAllocatedToSubsidiaryBySponsorNumericAbstract_b99160b7-69e2-48a0-b440-8363574972d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DefinedBenefitPlanCostsAllocatedToSubsidiaryByPlanSponsors_19f50bc2-e4e9-4d20-aca2-3012b3d1abf7" xlink:href="ppl-20250630.xsd#ppl_DefinedBenefitPlanCostsAllocatedToSubsidiaryByPlanSponsors"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_NetPeriodicDefinedBenefitCostsAllocatedToSubsidiaryBySponsorNumericAbstract_b99160b7-69e2-48a0-b440-8363574972d2" xlink:to="loc_ppl_DefinedBenefitPlanCostsAllocatedToSubsidiaryByPlanSponsors_19f50bc2-e4e9-4d20-aca2-3012b3d1abf7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionContributions_877ca587-8494-4154-8f1e-78d852b9258e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionContributions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_f1601bd4-2140-454d-a7b9-abe33695b989" xlink:to="loc_us-gaap_PensionContributions_877ca587-8494-4154-8f1e-78d852b9258e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitContributions_5f30efe4-3e38-4a5b-a4c6-29c3522b0437" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionAndOtherPostretirementBenefitContributions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_f1601bd4-2140-454d-a7b9-abe33695b989" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitContributions_5f30efe4-3e38-4a5b-a4c6-29c3522b0437" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/CommitmentsandContingenciesLegalMattersandRegulatoryIssuesDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#CommitmentsandContingenciesLegalMattersandRegulatoryIssuesDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/CommitmentsandContingenciesLegalMattersandRegulatoryIssuesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LegalMattersLineItems_64295276-ea2f-48c5-8745-9f4357980767" xlink:href="ppl-20250630.xsd#ppl_LegalMattersLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LegalMattersTable_329e0be6-2d56-4c3f-8fff-b94bbed40b21" xlink:href="ppl-20250630.xsd#ppl_LegalMattersTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_LegalMattersLineItems_64295276-ea2f-48c5-8745-9f4357980767" xlink:to="loc_ppl_LegalMattersTable_329e0be6-2d56-4c3f-8fff-b94bbed40b21" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_2d8e78b3-f996-4d50-b7f1-d727004416bb" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_LegalMattersTable_329e0be6-2d56-4c3f-8fff-b94bbed40b21" xlink:to="loc_dei_LegalEntityAxis_2d8e78b3-f996-4d50-b7f1-d727004416bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_2d8e78b3-f996-4d50-b7f1-d727004416bb_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_2d8e78b3-f996-4d50-b7f1-d727004416bb" xlink:to="loc_dei_EntityDomain_2d8e78b3-f996-4d50-b7f1-d727004416bb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_89f3745c-44a4-4f0c-b6e4-7644d7451953" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_2d8e78b3-f996-4d50-b7f1-d727004416bb" xlink:to="loc_dei_EntityDomain_89f3745c-44a4-4f0c-b6e4-7644d7451953" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_7a0d7ff4-69e1-4d04-966f-aa7069860fad" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_89f3745c-44a4-4f0c-b6e4-7644d7451953" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_7a0d7ff4-69e1-4d04-966f-aa7069860fad" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_15cc1315-a2f9-4d4d-9fe1-82b9e606451b" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_89f3745c-44a4-4f0c-b6e4-7644d7451953" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_15cc1315-a2f9-4d4d-9fe1-82b9e606451b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_fa633dfc-6b5a-4225-9ee9-d359c2340710" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_LegalMattersTable_329e0be6-2d56-4c3f-8fff-b94bbed40b21" xlink:to="loc_ppl_ByCompanyAxis_fa633dfc-6b5a-4225-9ee9-d359c2340710" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_fa633dfc-6b5a-4225-9ee9-d359c2340710_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_fa633dfc-6b5a-4225-9ee9-d359c2340710" xlink:to="loc_ppl_ByCompanyDomain_fa633dfc-6b5a-4225-9ee9-d359c2340710_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_730488a6-2f9f-471f-9f72-b375ece0d328" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_fa633dfc-6b5a-4225-9ee9-d359c2340710" xlink:to="loc_ppl_ByCompanyDomain_730488a6-2f9f-471f-9f72-b375ece0d328" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorporationMember_0ce8c9e2-5f55-4ef8-b2a1-5da41000f026" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_730488a6-2f9f-471f-9f72-b375ece0d328" xlink:to="loc_ppl_PplElectricUtilitiesCorporationMember_0ce8c9e2-5f55-4ef8-b2a1-5da41000f026" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_ce25b0c8-1d69-443d-adc9-8a9f376cf33e" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_730488a6-2f9f-471f-9f72-b375ece0d328" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_ce25b0c8-1d69-443d-adc9-8a9f376cf33e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_353d51b1-9dfb-426f-bc76-263e570e3a82" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_LegalMattersTable_329e0be6-2d56-4c3f-8fff-b94bbed40b21" xlink:to="loc_srt_RangeAxis_353d51b1-9dfb-426f-bc76-263e570e3a82" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_353d51b1-9dfb-426f-bc76-263e570e3a82_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_353d51b1-9dfb-426f-bc76-263e570e3a82" xlink:to="loc_srt_RangeMember_353d51b1-9dfb-426f-bc76-263e570e3a82_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_12d3ef68-b555-44fa-8b76-ef57d7e3d0b0" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_353d51b1-9dfb-426f-bc76-263e570e3a82" xlink:to="loc_srt_RangeMember_12d3ef68-b555-44fa-8b76-ef57d7e3d0b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_0d5cf3ef-d766-4ac1-9bd5-6b1357c8a4ba" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_12d3ef68-b555-44fa-8b76-ef57d7e3d0b0" xlink:to="loc_srt_MinimumMember_0d5cf3ef-d766-4ac1-9bd5-6b1357c8a4ba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_cc568aab-d6eb-42bd-a6b1-8d7a44674c26" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_12d3ef68-b555-44fa-8b76-ef57d7e3d0b0" xlink:to="loc_srt_MaximumMember_cc568aab-d6eb-42bd-a6b1-8d7a44674c26" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteAxis_78795192-f27a-45f8-95d2-14d364f662af" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnvironmentalRemediationSiteAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_LegalMattersTable_329e0be6-2d56-4c3f-8fff-b94bbed40b21" xlink:to="loc_us-gaap_EnvironmentalRemediationSiteAxis_78795192-f27a-45f8-95d2-14d364f662af" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteDomain_78795192-f27a-45f8-95d2-14d364f662af_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnvironmentalRemediationSiteDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteAxis_78795192-f27a-45f8-95d2-14d364f662af" xlink:to="loc_us-gaap_EnvironmentalRemediationSiteDomain_78795192-f27a-45f8-95d2-14d364f662af_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteDomain_e4eb8a52-5de9-40fc-aa9d-bcd419db543b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnvironmentalRemediationSiteDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteAxis_78795192-f27a-45f8-95d2-14d364f662af" xlink:to="loc_us-gaap_EnvironmentalRemediationSiteDomain_e4eb8a52-5de9-40fc-aa9d-bcd419db543b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricAdditionalSitesMember_8d9aa6ea-587d-4242-a380-520df456eac4" xlink:href="ppl-20250630.xsd#ppl_PplElectricAdditionalSitesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteDomain_e4eb8a52-5de9-40fc-aa9d-bcd419db543b" xlink:to="loc_ppl_PplElectricAdditionalSitesMember_8d9aa6ea-587d-4242-a380-520df456eac4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RIEEnvironmentalRemediationMember_33edd163-4f70-454e-b9d3-26ac52598d94" xlink:href="ppl-20250630.xsd#ppl_RIEEnvironmentalRemediationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteDomain_e4eb8a52-5de9-40fc-aa9d-bcd419db543b" xlink:to="loc_ppl_RIEEnvironmentalRemediationMember_33edd163-4f70-454e-b9d3-26ac52598d94" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_cfd18657-3461-4206-bb9e-947abc6575e3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_LegalMattersTable_329e0be6-2d56-4c3f-8fff-b94bbed40b21" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_cfd18657-3461-4206-bb9e-947abc6575e3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_cfd18657-3461-4206-bb9e-947abc6575e3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_cfd18657-3461-4206-bb9e-947abc6575e3" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_cfd18657-3461-4206-bb9e-947abc6575e3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_35244e26-199a-45b0-8453-b2346ef84d68" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_cfd18657-3461-4206-bb9e-947abc6575e3" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_35244e26-199a-45b0-8453-b2346ef84d68" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RatesTypeAxis_c83932e8-2d5a-417c-9c51-8916fc711816" xlink:href="ppl-20250630.xsd#ppl_RatesTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_LegalMattersTable_329e0be6-2d56-4c3f-8fff-b94bbed40b21" xlink:to="loc_ppl_RatesTypeAxis_c83932e8-2d5a-417c-9c51-8916fc711816" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RatesTypeDomain_c83932e8-2d5a-417c-9c51-8916fc711816_default" xlink:href="ppl-20250630.xsd#ppl_RatesTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_RatesTypeAxis_c83932e8-2d5a-417c-9c51-8916fc711816" xlink:to="loc_ppl_RatesTypeDomain_c83932e8-2d5a-417c-9c51-8916fc711816_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RatesTypeDomain_a27285eb-f474-4e1e-a2ca-9bd1fbcc83cc" xlink:href="ppl-20250630.xsd#ppl_RatesTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_RatesTypeAxis_c83932e8-2d5a-417c-9c51-8916fc711816" xlink:to="loc_ppl_RatesTypeDomain_a27285eb-f474-4e1e-a2ca-9bd1fbcc83cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ElectricRatesMember_101ddc5c-7b04-42d6-bb09-2e829e61c4df" xlink:href="ppl-20250630.xsd#ppl_ElectricRatesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RatesTypeDomain_a27285eb-f474-4e1e-a2ca-9bd1fbcc83cc" xlink:to="loc_ppl_ElectricRatesMember_101ddc5c-7b04-42d6-bb09-2e829e61c4df" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GasRatesMember_fbd823fa-51aa-422e-a0ae-c2e164cd9aac" xlink:href="ppl-20250630.xsd#ppl_GasRatesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_RatesTypeDomain_a27285eb-f474-4e1e-a2ca-9bd1fbcc83cc" xlink:to="loc_ppl_GasRatesMember_fbd823fa-51aa-422e-a0ae-c2e164cd9aac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LegalMattersCaneRunEnvironmentalClaimsNumericAbstract_49dea37b-a0b2-42e8-9fce-db142c0a90eb" xlink:href="ppl-20250630.xsd#ppl_LegalMattersCaneRunEnvironmentalClaimsNumericAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_64295276-ea2f-48c5-8745-9f4357980767" xlink:to="loc_ppl_LegalMattersCaneRunEnvironmentalClaimsNumericAbstract_49dea37b-a0b2-42e8-9fce-db142c0a90eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CaneRunPlantNumberOfPlaintiffsFiledSuit_3266bc17-a69e-41b3-9bb4-8f76c0035871" xlink:href="ppl-20250630.xsd#ppl_CaneRunPlantNumberOfPlaintiffsFiledSuit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersCaneRunEnvironmentalClaimsNumericAbstract_49dea37b-a0b2-42e8-9fce-db142c0a90eb" xlink:to="loc_ppl_CaneRunPlantNumberOfPlaintiffsFiledSuit_3266bc17-a69e-41b3-9bb4-8f76c0035871" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CanRunPlantClassOfResidentsMilesWithinPlant_f3cc6ac1-aa12-440f-a39b-e5260bbe07e3" xlink:href="ppl-20250630.xsd#ppl_CanRunPlantClassOfResidentsMilesWithinPlant"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersCaneRunEnvironmentalClaimsNumericAbstract_49dea37b-a0b2-42e8-9fce-db142c0a90eb" xlink:to="loc_ppl_CanRunPlantClassOfResidentsMilesWithinPlant_f3cc6ac1-aa12-440f-a39b-e5260bbe07e3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CaneRunPlantNumberOfUnresolvedCleanAirActViolations_412a7789-b7bb-441c-9f59-6f50b79e6d72" xlink:href="ppl-20250630.xsd#ppl_CaneRunPlantNumberOfUnresolvedCleanAirActViolations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersCaneRunEnvironmentalClaimsNumericAbstract_49dea37b-a0b2-42e8-9fce-db142c0a90eb" xlink:to="loc_ppl_CaneRunPlantNumberOfUnresolvedCleanAirActViolations_412a7789-b7bb-441c-9f59-6f50b79e6d72" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GeneratingUnitsRetiredPlantOne_eee04111-5c59-4558-bfa2-481c3e02b64e" xlink:href="ppl-20250630.xsd#ppl_GeneratingUnitsRetiredPlantOne"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersCaneRunEnvironmentalClaimsNumericAbstract_49dea37b-a0b2-42e8-9fce-db142c0a90eb" xlink:to="loc_ppl_GeneratingUnitsRetiredPlantOne_eee04111-5c59-4558-bfa2-481c3e02b64e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ClaimByFormerAffiliateAbstract_953c8f54-002b-4577-8fe0-c54f27a05b8c" xlink:href="ppl-20250630.xsd#ppl_ClaimByFormerAffiliateAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_64295276-ea2f-48c5-8745-9f4357980767" xlink:to="loc_ppl_ClaimByFormerAffiliateAbstract_953c8f54-002b-4577-8fe0-c54f27a05b8c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RestructuringAndRelatedActivitiesOwnershipPercentageByRiverstone_e58e18a9-b90b-4568-a1e8-334b927c5588" xlink:href="ppl-20250630.xsd#ppl_RestructuringAndRelatedActivitiesOwnershipPercentageByRiverstone"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ClaimByFormerAffiliateAbstract_953c8f54-002b-4577-8fe0-c54f27a05b8c" xlink:to="loc_ppl_RestructuringAndRelatedActivitiesOwnershipPercentageByRiverstone_e58e18a9-b90b-4568-a1e8-334b927c5588" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AmountOfAllegedImproperDistribution_216f48b2-acec-4232-8770-3f5020d1cddd" xlink:href="ppl-20250630.xsd#ppl_AmountOfAllegedImproperDistribution"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ClaimByFormerAffiliateAbstract_953c8f54-002b-4577-8fe0-c54f27a05b8c" xlink:to="loc_ppl_AmountOfAllegedImproperDistribution_216f48b2-acec-4232-8770-3f5020d1cddd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LTCSRenewableEnergyContractFirstSolicitationPower_a18b2b81-a2db-4626-9826-0b3e5d922ddd" xlink:href="ppl-20250630.xsd#ppl_LTCSRenewableEnergyContractFirstSolicitationPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_64295276-ea2f-48c5-8745-9f4357980767" xlink:to="loc_ppl_LTCSRenewableEnergyContractFirstSolicitationPower_a18b2b81-a2db-4626-9826-0b3e5d922ddd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PeriodOverWhichDistributionAdjustmentChargeRelatedCostsAreAmortized_812cf36b-e33a-4f28-afea-7e55cacdc8bf" xlink:href="ppl-20250630.xsd#ppl_PeriodOverWhichDistributionAdjustmentChargeRelatedCostsAreAmortized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_64295276-ea2f-48c5-8745-9f4357980767" xlink:to="loc_ppl_PeriodOverWhichDistributionAdjustmentChargeRelatedCostsAreAmortized_812cf36b-e33a-4f28-afea-7e55cacdc8bf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NumberOfCustomersImpactedByAquidneckIslandLossOfGasSupply_55737a5f-cd76-4809-9e08-69bc6367ddb7" xlink:href="ppl-20250630.xsd#ppl_NumberOfCustomersImpactedByAquidneckIslandLossOfGasSupply"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_64295276-ea2f-48c5-8745-9f4357980767" xlink:to="loc_ppl_NumberOfCustomersImpactedByAquidneckIslandLossOfGasSupply_55737a5f-cd76-4809-9e08-69bc6367ddb7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationExpense_0e70d25b-ae24-4763-8baf-35b792697b5c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnvironmentalRemediationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_64295276-ea2f-48c5-8745-9f4357980767" xlink:to="loc_us-gaap_EnvironmentalRemediationExpense_0e70d25b-ae24-4763-8baf-35b792697b5c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalCostsRecognizedRecoveryCreditedToExpense_3ecf5202-ef93-4d7e-b6fe-80f9b137ccd1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnvironmentalCostsRecognizedRecoveryCreditedToExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_64295276-ea2f-48c5-8745-9f4357980767" xlink:to="loc_us-gaap_EnvironmentalCostsRecognizedRecoveryCreditedToExpense_3ecf5202-ef93-4d7e-b6fe-80f9b137ccd1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueInRemainderOfFiscalYear_46115f10-83fb-41e3-80a0-cdaf38304d4f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueInRemainderOfFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_64295276-ea2f-48c5-8745-9f4357980767" xlink:to="loc_us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueInRemainderOfFiscalYear_46115f10-83fb-41e3-80a0-cdaf38304d4f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingenciesGross_54b38d00-39f8-4115-b579-936b15d2d6b2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_64295276-ea2f-48c5-8745-9f4357980767" xlink:to="loc_us-gaap_AccrualForEnvironmentalLossContingenciesGross_54b38d00-39f8-4115-b579-936b15d2d6b2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates_03b90e2e-54bb-4022-a2d1-aed0a99bee82" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_64295276-ea2f-48c5-8745-9f4357980767" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates_03b90e2e-54bb-4022-a2d1-aed0a99bee82" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ACESRenewableEnergyContractingCapacityRequirement_39aded70-7e31-4d84-8121-95d9853fdbea" xlink:href="ppl-20250630.xsd#ppl_ACESRenewableEnergyContractingCapacityRequirement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_64295276-ea2f-48c5-8745-9f4357980767" xlink:to="loc_ppl_ACESRenewableEnergyContractingCapacityRequirement_39aded70-7e31-4d84-8121-95d9853fdbea" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandDivisionOfPublicUtilitiesAndCarriersAmountToBeRefundedToTheRIEEnergyEfficiencyProgram_fb6e52a1-877e-4b72-883c-b7060890747d" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandDivisionOfPublicUtilitiesAndCarriersAmountToBeRefundedToTheRIEEnergyEfficiencyProgram"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_64295276-ea2f-48c5-8745-9f4357980767" xlink:to="loc_ppl_RhodeIslandDivisionOfPublicUtilitiesAndCarriersAmountToBeRefundedToTheRIEEnergyEfficiencyProgram_fb6e52a1-877e-4b72-883c-b7060890747d" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandDivisionOfPublicUtilitiesAndCarriersAmountAlreadyCreditedToTheRIEEnergyEfficiencyProgram_565810f8-22ea-423d-a932-f8dba29c69f0" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandDivisionOfPublicUtilitiesAndCarriersAmountAlreadyCreditedToTheRIEEnergyEfficiencyProgram"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_64295276-ea2f-48c5-8745-9f4357980767" xlink:to="loc_ppl_RhodeIslandDivisionOfPublicUtilitiesAndCarriersAmountAlreadyCreditedToTheRIEEnergyEfficiencyProgram_565810f8-22ea-423d-a932-f8dba29c69f0" xlink:type="arc" order="12"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/CommitmentsandContingenciesEnvironmentalMattersandOtherDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#CommitmentsandContingenciesEnvironmentalMattersandOtherDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/CommitmentsandContingenciesEnvironmentalMattersandOtherDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EnvironmentalMattersLineItems_362cd39b-d879-4415-938c-3fde32d47d70" xlink:href="ppl-20250630.xsd#ppl_EnvironmentalMattersLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EnvironmentalMattersTable_96ea04ff-af1e-42f6-9473-5a232954a305" xlink:href="ppl-20250630.xsd#ppl_EnvironmentalMattersTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_EnvironmentalMattersLineItems_362cd39b-d879-4415-938c-3fde32d47d70" xlink:to="loc_ppl_EnvironmentalMattersTable_96ea04ff-af1e-42f6-9473-5a232954a305" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_288e0800-8580-4482-ad24-7faf2233879f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_EnvironmentalMattersTable_96ea04ff-af1e-42f6-9473-5a232954a305" xlink:to="loc_dei_LegalEntityAxis_288e0800-8580-4482-ad24-7faf2233879f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_288e0800-8580-4482-ad24-7faf2233879f_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_288e0800-8580-4482-ad24-7faf2233879f" xlink:to="loc_dei_EntityDomain_288e0800-8580-4482-ad24-7faf2233879f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_32cde6b2-b433-40e8-a2e4-89daa4686d1a" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_288e0800-8580-4482-ad24-7faf2233879f" xlink:to="loc_dei_EntityDomain_32cde6b2-b433-40e8-a2e4-89daa4686d1a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_74acf4e7-2aac-46f0-a981-de681908bbb2" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_32cde6b2-b433-40e8-a2e4-89daa4686d1a" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_74acf4e7-2aac-46f0-a981-de681908bbb2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_a1070639-b207-4c44-aed8-dbd88e2a89e8" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_32cde6b2-b433-40e8-a2e4-89daa4686d1a" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_a1070639-b207-4c44-aed8-dbd88e2a89e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_a39ee1fb-b4eb-48a7-815e-7d70d518ed70" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_32cde6b2-b433-40e8-a2e4-89daa4686d1a" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_a39ee1fb-b4eb-48a7-815e-7d70d518ed70" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_d6f11371-3234-4bf2-bc9f-0c9b40856859" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_EnvironmentalMattersTable_96ea04ff-af1e-42f6-9473-5a232954a305" xlink:to="loc_ppl_ByCompanyAxis_d6f11371-3234-4bf2-bc9f-0c9b40856859" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_d6f11371-3234-4bf2-bc9f-0c9b40856859_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_d6f11371-3234-4bf2-bc9f-0c9b40856859" xlink:to="loc_ppl_ByCompanyDomain_d6f11371-3234-4bf2-bc9f-0c9b40856859_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_422c6004-73a7-47a1-bf0a-5bb8b69ed2af" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_d6f11371-3234-4bf2-bc9f-0c9b40856859" xlink:to="loc_ppl_ByCompanyDomain_422c6004-73a7-47a1-bf0a-5bb8b69ed2af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorporationMember_cbb89357-9bfc-42d1-aac6-2da0c1db3dc4" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_422c6004-73a7-47a1-bf0a-5bb8b69ed2af" xlink:to="loc_ppl_PplElectricUtilitiesCorporationMember_cbb89357-9bfc-42d1-aac6-2da0c1db3dc4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_ab5184c7-e91a-4714-94e6-218b553a7ed1" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_422c6004-73a7-47a1-bf0a-5bb8b69ed2af" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_ab5184c7-e91a-4714-94e6-218b553a7ed1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCompanyMember_549bd9e5-4721-4a53-b2d7-7190aded866d" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_422c6004-73a7-47a1-bf0a-5bb8b69ed2af" xlink:to="loc_ppl_KentuckyUtilitiesCompanyMember_549bd9e5-4721-4a53-b2d7-7190aded866d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteAxis_98bb8b0a-5765-46f4-ab53-56f35bf735ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnvironmentalRemediationSiteAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_EnvironmentalMattersTable_96ea04ff-af1e-42f6-9473-5a232954a305" xlink:to="loc_us-gaap_EnvironmentalRemediationSiteAxis_98bb8b0a-5765-46f4-ab53-56f35bf735ed" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteDomain_98bb8b0a-5765-46f4-ab53-56f35bf735ed_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnvironmentalRemediationSiteDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteAxis_98bb8b0a-5765-46f4-ab53-56f35bf735ed" xlink:to="loc_us-gaap_EnvironmentalRemediationSiteDomain_98bb8b0a-5765-46f4-ab53-56f35bf735ed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteDomain_dda15d77-8b7e-4827-b1d5-ae967dbebbd5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnvironmentalRemediationSiteDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteAxis_98bb8b0a-5765-46f4-ab53-56f35bf735ed" xlink:to="loc_us-gaap_EnvironmentalRemediationSiteDomain_dda15d77-8b7e-4827-b1d5-ae967dbebbd5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricAdditionalSitesMember_e484ea4a-c813-4684-94f4-d6aa47883682" xlink:href="ppl-20250630.xsd#ppl_PplElectricAdditionalSitesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteDomain_dda15d77-8b7e-4827-b1d5-ae967dbebbd5" xlink:to="loc_ppl_PplElectricAdditionalSitesMember_e484ea4a-c813-4684-94f4-d6aa47883682" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RIEEnvironmentalRemediationMember_b3a3d7af-caa5-4f21-a5dd-7b5dd359cb65" xlink:href="ppl-20250630.xsd#ppl_RIEEnvironmentalRemediationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteDomain_dda15d77-8b7e-4827-b1d5-ae967dbebbd5" xlink:to="loc_ppl_RIEEnvironmentalRemediationMember_b3a3d7af-caa5-4f21-a5dd-7b5dd359cb65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_787d0653-db79-49fb-8a10-2a34f2827528" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_EnvironmentalMattersTable_96ea04ff-af1e-42f6-9473-5a232954a305" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_787d0653-db79-49fb-8a10-2a34f2827528" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_787d0653-db79-49fb-8a10-2a34f2827528_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_787d0653-db79-49fb-8a10-2a34f2827528" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_787d0653-db79-49fb-8a10-2a34f2827528_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_4586dff3-3cf9-4c5e-a7d0-a8fb841f14b6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_787d0653-db79-49fb-8a10-2a34f2827528" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_4586dff3-3cf9-4c5e-a7d0-a8fb841f14b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_26aaa9e7-1f7c-44ba-90c0-c409ada71c0a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_4586dff3-3cf9-4c5e-a7d0-a8fb841f14b6" xlink:to="loc_us-gaap_SubsequentEventMember_26aaa9e7-1f7c-44ba-90c0-c409ada71c0a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PotentialSiteOfEnvironmentalContaminationAxis_a84a895a-7e5e-426c-813d-223f7d1fd176" xlink:href="ppl-20250630.xsd#ppl_PotentialSiteOfEnvironmentalContaminationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_EnvironmentalMattersTable_96ea04ff-af1e-42f6-9473-5a232954a305" xlink:to="loc_ppl_PotentialSiteOfEnvironmentalContaminationAxis_a84a895a-7e5e-426c-813d-223f7d1fd176" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PotentialSiteOfEnvironmentalContaminationDomain_a84a895a-7e5e-426c-813d-223f7d1fd176_default" xlink:href="ppl-20250630.xsd#ppl_PotentialSiteOfEnvironmentalContaminationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_PotentialSiteOfEnvironmentalContaminationAxis_a84a895a-7e5e-426c-813d-223f7d1fd176" xlink:to="loc_ppl_PotentialSiteOfEnvironmentalContaminationDomain_a84a895a-7e5e-426c-813d-223f7d1fd176_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PotentialSiteOfEnvironmentalContaminationDomain_35240f7a-b085-4dd1-adc8-eeb88efb2eae" xlink:href="ppl-20250630.xsd#ppl_PotentialSiteOfEnvironmentalContaminationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_PotentialSiteOfEnvironmentalContaminationAxis_a84a895a-7e5e-426c-813d-223f7d1fd176" xlink:to="loc_ppl_PotentialSiteOfEnvironmentalContaminationDomain_35240f7a-b085-4dd1-adc8-eeb88efb2eae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ShamokinMember_717c9a7c-e9e2-4726-820c-5175e572c04c" xlink:href="ppl-20250630.xsd#ppl_ShamokinMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_PotentialSiteOfEnvironmentalContaminationDomain_35240f7a-b085-4dd1-adc8-eeb88efb2eae" xlink:to="loc_ppl_ShamokinMember_717c9a7c-e9e2-4726-820c-5175e572c04c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LancasterMember_8745ce4e-70ea-4a37-b774-4337f9c23cc1" xlink:href="ppl-20250630.xsd#ppl_LancasterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_PotentialSiteOfEnvironmentalContaminationDomain_35240f7a-b085-4dd1-adc8-eeb88efb2eae" xlink:to="loc_ppl_LancasterMember_8745ce4e-70ea-4a37-b774-4337f9c23cc1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LititzMember_bd85813f-fd68-403f-9d10-6ff299fd3c41" xlink:href="ppl-20250630.xsd#ppl_LititzMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_PotentialSiteOfEnvironmentalContaminationDomain_35240f7a-b085-4dd1-adc8-eeb88efb2eae" xlink:to="loc_ppl_LititzMember_bd85813f-fd68-403f-9d10-6ff299fd3c41" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EnvironmentalMattersDomesticAirNumericAbstract_ebe81e84-f19f-45d5-a6a3-3f53b490e312" xlink:href="ppl-20250630.xsd#ppl_EnvironmentalMattersDomesticAirNumericAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_EnvironmentalMattersLineItems_362cd39b-d879-4415-938c-3fde32d47d70" xlink:to="loc_ppl_EnvironmentalMattersDomesticAirNumericAbstract_ebe81e84-f19f-45d5-a6a3-3f53b490e312" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EnvironmentalMattersWaterWasteCoalCombustionResidualsNumericAbstract_770e359b-ab9d-4032-a021-50d6e5805c6c" xlink:href="ppl-20250630.xsd#ppl_EnvironmentalMattersWaterWasteCoalCombustionResidualsNumericAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_EnvironmentalMattersLineItems_362cd39b-d879-4415-938c-3fde32d47d70" xlink:to="loc_ppl_EnvironmentalMattersWaterWasteCoalCombustionResidualsNumericAbstract_770e359b-ab9d-4032-a021-50d6e5805c6c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EnvironmentalMattersSuperfundAndOtherRemediationNumericAbstract_0526392a-6f27-490c-94c1-64152a1c5cd3" xlink:href="ppl-20250630.xsd#ppl_EnvironmentalMattersSuperfundAndOtherRemediationNumericAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_EnvironmentalMattersLineItems_362cd39b-d879-4415-938c-3fde32d47d70" xlink:to="loc_ppl_EnvironmentalMattersSuperfundAndOtherRemediationNumericAbstract_0526392a-6f27-490c-94c1-64152a1c5cd3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherLaborUnionsAbstract_29510fec-32e1-4838-8b3b-34d07ba66e26" xlink:href="ppl-20250630.xsd#ppl_OtherLaborUnionsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_EnvironmentalMattersLineItems_362cd39b-d879-4415-938c-3fde32d47d70" xlink:to="loc_ppl_OtherLaborUnionsAbstract_29510fec-32e1-4838-8b3b-34d07ba66e26" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CollectiveBargainingAgreementTerm_8a7649a7-63e9-40ae-b908-944592c1f343" xlink:href="ppl-20250630.xsd#ppl_CollectiveBargainingAgreementTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_EnvironmentalMattersLineItems_362cd39b-d879-4415-938c-3fde32d47d70" xlink:to="loc_ppl_CollectiveBargainingAgreementTerm_8a7649a7-63e9-40ae-b908-944592c1f343" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ConcentrationRiskNumberOfUnionEmployees_85064018-fc34-43bf-9403-6723525a768f" xlink:href="ppl-20250630.xsd#ppl_ConcentrationRiskNumberOfUnionEmployees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_EnvironmentalMattersLineItems_362cd39b-d879-4415-938c-3fde32d47d70" xlink:to="loc_ppl_ConcentrationRiskNumberOfUnionEmployees_85064018-fc34-43bf-9403-6723525a768f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationExpense_1d8339d4-a48b-452d-a9f6-52ae90748f4f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnvironmentalRemediationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_EnvironmentalMattersLineItems_362cd39b-d879-4415-938c-3fde32d47d70" xlink:to="loc_us-gaap_EnvironmentalRemediationExpense_1d8339d4-a48b-452d-a9f6-52ae90748f4f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AmortizationOfExcessDeferredIncomeTaxes_a23d4bed-53e3-491f-b0e7-6d5259a00e80" xlink:href="ppl-20250630.xsd#ppl_AmortizationOfExcessDeferredIncomeTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_EnvironmentalMattersLineItems_362cd39b-d879-4415-938c-3fde32d47d70" xlink:to="loc_ppl_AmortizationOfExcessDeferredIncomeTaxes_a23d4bed-53e3-491f-b0e7-6d5259a00e80" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingenciesGross_d74b6a34-a2ee-49e4-be39-ba2b7af692f3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_EnvironmentalMattersLineItems_362cd39b-d879-4415-938c-3fde32d47d70" xlink:to="loc_us-gaap_AccrualForEnvironmentalLossContingenciesGross_d74b6a34-a2ee-49e4-be39-ba2b7af692f3" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PercentageOfCostsToInvestigateEnvironmentalContamination_404c8600-79c7-440d-b095-13f70922bb68" xlink:href="ppl-20250630.xsd#ppl_PercentageOfCostsToInvestigateEnvironmentalContamination"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_EnvironmentalMattersLineItems_362cd39b-d879-4415-938c-3fde32d47d70" xlink:to="loc_ppl_PercentageOfCostsToInvestigateEnvironmentalContamination_404c8600-79c7-440d-b095-13f70922bb68" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/CommitmentsandContingenciesGuaranteesandOtherAssurancesDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#CommitmentsandContingenciesGuaranteesandOtherAssurancesDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/CommitmentsandContingenciesGuaranteesandOtherAssurancesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsLineItems_c6fc9459-b420-4861-8788-e9cdf675fe1a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GuaranteeObligationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_63f98d5e-f2c1-43a9-9adf-f3d745ffd753" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfGuaranteeObligationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_c6fc9459-b420-4861-8788-e9cdf675fe1a" xlink:to="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_63f98d5e-f2c1-43a9-9adf-f3d745ffd753" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_1dd08e1d-3b44-4493-b53f-a9163bd90c76" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_63f98d5e-f2c1-43a9-9adf-f3d745ffd753" xlink:to="loc_dei_LegalEntityAxis_1dd08e1d-3b44-4493-b53f-a9163bd90c76" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1dd08e1d-3b44-4493-b53f-a9163bd90c76_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1dd08e1d-3b44-4493-b53f-a9163bd90c76" xlink:to="loc_dei_EntityDomain_1dd08e1d-3b44-4493-b53f-a9163bd90c76_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_2b40a7b4-258f-4947-852c-2f075beae8f1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1dd08e1d-3b44-4493-b53f-a9163bd90c76" xlink:to="loc_dei_EntityDomain_2b40a7b4-258f-4947-852c-2f075beae8f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_f7fbbcb1-ef36-4536-a940-05702f7dd6ac" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2b40a7b4-258f-4947-852c-2f075beae8f1" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_f7fbbcb1-ef36-4536-a940-05702f7dd6ac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_c317d8ab-ee55-493c-b960-dea61eaa96eb" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2b40a7b4-258f-4947-852c-2f075beae8f1" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_c317d8ab-ee55-493c-b960-dea61eaa96eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_6984e985-0189-400c-b98b-c4b0be6f34cf" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2b40a7b4-258f-4947-852c-2f075beae8f1" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_6984e985-0189-400c-b98b-c4b0be6f34cf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GuaranteeByEntityAxis_e2b229ba-8dea-4080-981d-c6e9490dedb6" xlink:href="ppl-20250630.xsd#ppl_GuaranteeByEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_63f98d5e-f2c1-43a9-9adf-f3d745ffd753" xlink:to="loc_ppl_GuaranteeByEntityAxis_e2b229ba-8dea-4080-981d-c6e9490dedb6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GuaranteeByEntityDomain_e2b229ba-8dea-4080-981d-c6e9490dedb6_default" xlink:href="ppl-20250630.xsd#ppl_GuaranteeByEntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_GuaranteeByEntityAxis_e2b229ba-8dea-4080-981d-c6e9490dedb6" xlink:to="loc_ppl_GuaranteeByEntityDomain_e2b229ba-8dea-4080-981d-c6e9490dedb6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GuaranteeByEntityDomain_fec9b9a2-a96b-4ebf-99be-cbb0a1b6c9b3" xlink:href="ppl-20250630.xsd#ppl_GuaranteeByEntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_GuaranteeByEntityAxis_e2b229ba-8dea-4080-981d-c6e9490dedb6" xlink:to="loc_ppl_GuaranteeByEntityDomain_fec9b9a2-a96b-4ebf-99be-cbb0a1b6c9b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplGuaranteeMember_fa8f4d3a-1ece-43d8-a60d-c6864a7d23e4" xlink:href="ppl-20250630.xsd#ppl_PplGuaranteeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_GuaranteeByEntityDomain_fec9b9a2-a96b-4ebf-99be-cbb0a1b6c9b3" xlink:to="loc_ppl_PplGuaranteeMember_fa8f4d3a-1ece-43d8-a60d-c6864a7d23e4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricGuaranteeMember_17408dae-ad17-48f7-9c08-421f249d073f" xlink:href="ppl-20250630.xsd#ppl_PplElectricGuaranteeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_GuaranteeByEntityDomain_fec9b9a2-a96b-4ebf-99be-cbb0a1b6c9b3" xlink:to="loc_ppl_PplElectricGuaranteeMember_17408dae-ad17-48f7-9c08-421f249d073f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricAndKuEnergyGuaranteeMember_dfa0608f-d8ab-442c-8a06-799596c96faf" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricAndKuEnergyGuaranteeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_GuaranteeByEntityDomain_fec9b9a2-a96b-4ebf-99be-cbb0a1b6c9b3" xlink:to="loc_ppl_LouisvilleGasAndElectricAndKuEnergyGuaranteeMember_dfa0608f-d8ab-442c-8a06-799596c96faf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyAndKentuckyUtilitiesGuaranteeMember_279667a4-7f61-472b-bc65-1f21b02040d0" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyAndKentuckyUtilitiesGuaranteeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_GuaranteeByEntityDomain_fec9b9a2-a96b-4ebf-99be-cbb0a1b6c9b3" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyAndKentuckyUtilitiesGuaranteeMember_279667a4-7f61-472b-bc65-1f21b02040d0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsByNatureAxis_0eb9a75d-bed4-43c4-b3c9-cc14d2d4097b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GuaranteeObligationsByNatureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_63f98d5e-f2c1-43a9-9adf-f3d745ffd753" xlink:to="loc_us-gaap_GuaranteeObligationsByNatureAxis_0eb9a75d-bed4-43c4-b3c9-cc14d2d4097b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_0eb9a75d-bed4-43c4-b3c9-cc14d2d4097b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GuaranteeObligationsNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_0eb9a75d-bed4-43c4-b3c9-cc14d2d4097b" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_0eb9a75d-bed4-43c4-b3c9-cc14d2d4097b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_48fcd60c-b799-4c5f-9b20-318b673110b5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GuaranteeObligationsNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_0eb9a75d-bed4-43c4-b3c9-cc14d2d4097b" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_48fcd60c-b799-4c5f-9b20-318b673110b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndemnificationGuaranteeMember_613ff490-2afb-45ed-8ecc-7a47c1a997c2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndemnificationGuaranteeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_48fcd60c-b799-4c5f-9b20-318b673110b5" xlink:to="loc_us-gaap_IndemnificationGuaranteeMember_613ff490-2afb-45ed-8ecc-7a47c1a997c2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialGuaranteeMember_a993a48e-06ff-40a9-b058-66a596f07c5d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialGuaranteeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_48fcd60c-b799-4c5f-9b20-318b673110b5" xlink:to="loc_us-gaap_FinancialGuaranteeMember_a993a48e-06ff-40a9-b058-66a596f07c5d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GuaranteeByDescriptionAxis_6306be1d-848d-409e-b9f6-2c1a80c175c3" xlink:href="ppl-20250630.xsd#ppl_GuaranteeByDescriptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_63f98d5e-f2c1-43a9-9adf-f3d745ffd753" xlink:to="loc_ppl_GuaranteeByDescriptionAxis_6306be1d-848d-409e-b9f6-2c1a80c175c3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GuaranteeByDescriptionDomain_6306be1d-848d-409e-b9f6-2c1a80c175c3_default" xlink:href="ppl-20250630.xsd#ppl_GuaranteeByDescriptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_GuaranteeByDescriptionAxis_6306be1d-848d-409e-b9f6-2c1a80c175c3" xlink:to="loc_ppl_GuaranteeByDescriptionDomain_6306be1d-848d-409e-b9f6-2c1a80c175c3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GuaranteeByDescriptionDomain_cb69cf75-b6c3-4986-8829-db697e058217" xlink:href="ppl-20250630.xsd#ppl_GuaranteeByDescriptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_GuaranteeByDescriptionAxis_6306be1d-848d-409e-b9f6-2c1a80c175c3" xlink:to="loc_ppl_GuaranteeByDescriptionDomain_cb69cf75-b6c3-4986-8829-db697e058217" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IndemnificationsRelatedToCertainTaxLiabilitiesRelatedToTheSaleOfTheUKUtilityBusinessDomain_b4aeb0c8-30a6-43ac-83d0-db2d5bf07b03" xlink:href="ppl-20250630.xsd#ppl_IndemnificationsRelatedToCertainTaxLiabilitiesRelatedToTheSaleOfTheUKUtilityBusinessDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_GuaranteeByDescriptionDomain_cb69cf75-b6c3-4986-8829-db697e058217" xlink:to="loc_ppl_IndemnificationsRelatedToCertainTaxLiabilitiesRelatedToTheSaleOfTheUKUtilityBusinessDomain_b4aeb0c8-30a6-43ac-83d0-db2d5bf07b03" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GuaranteeForShortfallRelatedToOhioValleyElectricCorporationMember_e588baab-1455-4582-81eb-9bc61d1b1745" xlink:href="ppl-20250630.xsd#ppl_GuaranteeForShortfallRelatedToOhioValleyElectricCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_GuaranteeByDescriptionDomain_cb69cf75-b6c3-4986-8829-db697e058217" xlink:to="loc_ppl_GuaranteeForShortfallRelatedToOhioValleyElectricCorporationMember_e588baab-1455-4582-81eb-9bc61d1b1745" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GuaranteeOfPaymentObligationsUnderCertainSaleleasebackFinancingTransactionsRelatedToTheSaleOfSafariHoldingsMember_d4c63ea0-a0d2-4a23-961e-24aa29f4c2ee" xlink:href="ppl-20250630.xsd#ppl_GuaranteeOfPaymentObligationsUnderCertainSaleleasebackFinancingTransactionsRelatedToTheSaleOfSafariHoldingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_GuaranteeByDescriptionDomain_cb69cf75-b6c3-4986-8829-db697e058217" xlink:to="loc_ppl_GuaranteeOfPaymentObligationsUnderCertainSaleleasebackFinancingTransactionsRelatedToTheSaleOfSafariHoldingsMember_d4c63ea0-a0d2-4a23-961e-24aa29f4c2ee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GuaranteeOfPaymentObligationsUnderCertainPowerPurchaseAgreementsRelatedToTheSaleOfSafariHoldingsMember_9c3945d7-9f3a-44ee-b33e-f63de32925e7" xlink:href="ppl-20250630.xsd#ppl_GuaranteeOfPaymentObligationsUnderCertainPowerPurchaseAgreementsRelatedToTheSaleOfSafariHoldingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_GuaranteeByDescriptionDomain_cb69cf75-b6c3-4986-8829-db697e058217" xlink:to="loc_ppl_GuaranteeOfPaymentObligationsUnderCertainPowerPurchaseAgreementsRelatedToTheSaleOfSafariHoldingsMember_9c3945d7-9f3a-44ee-b33e-f63de32925e7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IndemnificationsForLossesSufferedRelatedToItemsNotCoveredByAspenPowersRepresentationAndWarrantyInsuranceAssociatedWithTheSaleOfSafariHoldingsMember_00e1468c-8096-4af6-8b63-be09d8a87bbc" xlink:href="ppl-20250630.xsd#ppl_IndemnificationsForLossesSufferedRelatedToItemsNotCoveredByAspenPowersRepresentationAndWarrantyInsuranceAssociatedWithTheSaleOfSafariHoldingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_GuaranteeByDescriptionDomain_cb69cf75-b6c3-4986-8829-db697e058217" xlink:to="loc_ppl_IndemnificationsForLossesSufferedRelatedToItemsNotCoveredByAspenPowersRepresentationAndWarrantyInsuranceAssociatedWithTheSaleOfSafariHoldingsMember_00e1468c-8096-4af6-8b63-be09d8a87bbc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_69ac41cb-70f4-49fd-adce-9d6aa0d1eb2c" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_63f98d5e-f2c1-43a9-9adf-f3d745ffd753" xlink:to="loc_srt_RangeAxis_69ac41cb-70f4-49fd-adce-9d6aa0d1eb2c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_69ac41cb-70f4-49fd-adce-9d6aa0d1eb2c_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_69ac41cb-70f4-49fd-adce-9d6aa0d1eb2c" xlink:to="loc_srt_RangeMember_69ac41cb-70f4-49fd-adce-9d6aa0d1eb2c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_cb5fe81a-66c5-482a-a3c3-22caf7e5603e" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_69ac41cb-70f4-49fd-adce-9d6aa0d1eb2c" xlink:to="loc_srt_RangeMember_cb5fe81a-66c5-482a-a3c3-22caf7e5603e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_c057c2b6-9656-4723-94f3-4be861d1459b" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_cb5fe81a-66c5-482a-a3c3-22caf7e5603e" xlink:to="loc_srt_MinimumMember_c057c2b6-9656-4723-94f3-4be861d1459b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_2a202e5f-f645-4168-bb96-4a81aa49db99" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_cb5fe81a-66c5-482a-a3c3-22caf7e5603e" xlink:to="loc_srt_MaximumMember_2a202e5f-f645-4168-bb96-4a81aa49db99" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_1a3a18c7-9661-4fdd-be1d-eadc3517c532" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_63f98d5e-f2c1-43a9-9adf-f3d745ffd753" xlink:to="loc_ppl_ByCompanyAxis_1a3a18c7-9661-4fdd-be1d-eadc3517c532" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_1a3a18c7-9661-4fdd-be1d-eadc3517c532_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_1a3a18c7-9661-4fdd-be1d-eadc3517c532" xlink:to="loc_ppl_ByCompanyDomain_1a3a18c7-9661-4fdd-be1d-eadc3517c532_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_6cf18fa9-67ad-4ba3-90d1-ec35f00c1c76" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_1a3a18c7-9661-4fdd-be1d-eadc3517c532" xlink:to="loc_ppl_ByCompanyDomain_6cf18fa9-67ad-4ba3-90d1-ec35f00c1c76" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_a085ad05-f843-45b2-aae4-63ccb30a19d3" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_6cf18fa9-67ad-4ba3-90d1-ec35f00c1c76" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_a085ad05-f843-45b2-aae4-63ccb30a19d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCompanyMember_44f0d15b-4c14-41c5-91b0-b3c3c2777615" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_6cf18fa9-67ad-4ba3-90d1-ec35f00c1c76" xlink:to="loc_ppl_KentuckyUtilitiesCompanyMember_44f0d15b-4c14-41c5-91b0-b3c3c2777615" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsCurrentCarryingValue_25dc24db-5b16-4aab-8ef8-4ccdd6f411d0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GuaranteeObligationsCurrentCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_c6fc9459-b420-4861-8788-e9cdf675fe1a" xlink:to="loc_us-gaap_GuaranteeObligationsCurrentCarryingValue_25dc24db-5b16-4aab-8ef8-4ccdd6f411d0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsMaximumExposureInestimable_d9d290e4-641e-425d-b4cf-0acd85e50960" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GuaranteeObligationsMaximumExposureInestimable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_c6fc9459-b420-4861-8788-e9cdf675fe1a" xlink:to="loc_us-gaap_GuaranteeObligationsMaximumExposureInestimable_d9d290e4-641e-425d-b4cf-0acd85e50960" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GuaranteeMaximumExposure2021_362714b8-0185-454f-b5bc-100a5ca4a825" xlink:href="ppl-20250630.xsd#ppl_GuaranteeMaximumExposure2021"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_c6fc9459-b420-4861-8788-e9cdf675fe1a" xlink:to="loc_ppl_GuaranteeMaximumExposure2021_362714b8-0185-454f-b5bc-100a5ca4a825" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ProportionateShareOfOhioValleyElectricCorporationOutstandingDebt_7c704875-e29a-402b-875b-2e461c0a1af0" xlink:href="ppl-20250630.xsd#ppl_ProportionateShareOfOhioValleyElectricCorporationOutstandingDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_c6fc9459-b420-4861-8788-e9cdf675fe1a" xlink:to="loc_ppl_ProportionateShareOfOhioValleyElectricCorporationOutstandingDebt_7c704875-e29a-402b-875b-2e461c0a1af0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MinimumPeriodInYearsThatIndemnificationsGenerallyExpire_efd1bac2-9a28-41cb-8a3d-82b80824c2b2" xlink:href="ppl-20250630.xsd#ppl_MinimumPeriodInYearsThatIndemnificationsGenerallyExpire"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_c6fc9459-b420-4861-8788-e9cdf675fe1a" xlink:to="loc_ppl_MinimumPeriodInYearsThatIndemnificationsGenerallyExpire_efd1bac2-9a28-41cb-8a3d-82b80824c2b2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MaximumPeriodInYearsThatIndemnificationsGenerallyExpire_6b8b12b5-263e-4ce5-b5f6-e72e805f1939" xlink:href="ppl-20250630.xsd#ppl_MaximumPeriodInYearsThatIndemnificationsGenerallyExpire"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_c6fc9459-b420-4861-8788-e9cdf675fe1a" xlink:to="loc_ppl_MaximumPeriodInYearsThatIndemnificationsGenerallyExpire_6b8b12b5-263e-4ce5-b5f6-e72e805f1939" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherGuaranteeNumericAbstract_492102e1-40e3-46e9-8b9f-8a3bf8efb118" xlink:href="ppl-20250630.xsd#ppl_OtherGuaranteeNumericAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_c6fc9459-b420-4861-8788-e9cdf675fe1a" xlink:to="loc_ppl_OtherGuaranteeNumericAbstract_492102e1-40e3-46e9-8b9f-8a3bf8efb118" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MaximumAggregateCoverageBodilyInjuryAndPropertyDamageNonWildfire_82505c12-cc5d-4e07-a002-b5a6fff9bc7b" xlink:href="ppl-20250630.xsd#ppl_MaximumAggregateCoverageBodilyInjuryAndPropertyDamageNonWildfire"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherGuaranteeNumericAbstract_492102e1-40e3-46e9-8b9f-8a3bf8efb118" xlink:to="loc_ppl_MaximumAggregateCoverageBodilyInjuryAndPropertyDamageNonWildfire_82505c12-cc5d-4e07-a002-b5a6fff9bc7b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CollectiveBargainingAgreementTerm_096b38d7-4c90-4e0f-8102-fddadb9f1028" xlink:href="ppl-20250630.xsd#ppl_CollectiveBargainingAgreementTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_c6fc9459-b420-4861-8788-e9cdf675fe1a" xlink:to="loc_ppl_CollectiveBargainingAgreementTerm_096b38d7-4c90-4e0f-8102-fddadb9f1028" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsMaximumExposure_0c393632-bc24-4c82-8190-8c882ee7cc78" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GuaranteeObligationsMaximumExposure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_c6fc9459-b420-4861-8788-e9cdf675fe1a" xlink:to="loc_us-gaap_GuaranteeObligationsMaximumExposure_0c393632-bc24-4c82-8190-8c882ee7cc78" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IndemnificationCapSurrendersOfTaxLosses_fb541583-ce70-4d19-aaf6-40e8d297a668" xlink:href="ppl-20250630.xsd#ppl_IndemnificationCapSurrendersOfTaxLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_c6fc9459-b420-4861-8788-e9cdf675fe1a" xlink:to="loc_ppl_IndemnificationCapSurrendersOfTaxLosses_fb541583-ce70-4d19-aaf6-40e8d297a668" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IndemnificationForSafariSaleleaseback_ac6f377d-c19c-4fb9-bebf-bef528f956a9" xlink:href="ppl-20250630.xsd#ppl_IndemnificationForSafariSaleleaseback"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_c6fc9459-b420-4861-8788-e9cdf675fe1a" xlink:to="loc_ppl_IndemnificationForSafariSaleleaseback_ac6f377d-c19c-4fb9-bebf-bef528f956a9" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MaximumAggregateCoverageBodilyInjuryAndPropertyDamageWildfire_d3f34d13-2d36-42c4-94b8-2013b5cee833" xlink:href="ppl-20250630.xsd#ppl_MaximumAggregateCoverageBodilyInjuryAndPropertyDamageWildfire"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_c6fc9459-b420-4861-8788-e9cdf675fe1a" xlink:to="loc_ppl_MaximumAggregateCoverageBodilyInjuryAndPropertyDamageWildfire_d3f34d13-2d36-42c4-94b8-2013b5cee833" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/CommitmentsandContingenciesEnergyPurchaseCommitmentsDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#CommitmentsandContingenciesEnergyPurchaseCommitmentsDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/CommitmentsandContingenciesEnergyPurchaseCommitmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:href="ppl-20250630.xsd#ppl_LegalMattersLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LegalMattersTable_240a1450-ee10-456d-9274-baad423bc3a7" xlink:href="ppl-20250630.xsd#ppl_LegalMattersTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_ppl_LegalMattersTable_240a1450-ee10-456d-9274-baad423bc3a7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_55e067ea-0851-41a1-89a1-bb02cbde77a3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_LegalMattersTable_240a1450-ee10-456d-9274-baad423bc3a7" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_55e067ea-0851-41a1-89a1-bb02cbde77a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_55e067ea-0851-41a1-89a1-bb02cbde77a3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_55e067ea-0851-41a1-89a1-bb02cbde77a3" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_55e067ea-0851-41a1-89a1-bb02cbde77a3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_6abbdf85-02ac-457a-813e-4b19f70d3532" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_55e067ea-0851-41a1-89a1-bb02cbde77a3" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_6abbdf85-02ac-457a-813e-4b19f70d3532" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PowerPurchaseMember_23c2f30b-7996-4b37-836b-cd5c068f4391" xlink:href="ppl-20250630.xsd#ppl_PowerPurchaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_6abbdf85-02ac-457a-813e-4b19f70d3532" xlink:to="loc_ppl_PowerPurchaseMember_23c2f30b-7996-4b37-836b-cd5c068f4391" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_4a6247be-315d-4602-98a9-a97e90558832" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_LegalMattersTable_240a1450-ee10-456d-9274-baad423bc3a7" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_4a6247be-315d-4602-98a9-a97e90558832" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_4a6247be-315d-4602-98a9-a97e90558832_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_4a6247be-315d-4602-98a9-a97e90558832" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_4a6247be-315d-4602-98a9-a97e90558832_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_b251dc66-3ad3-43ae-af2d-e75c795fb309" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_4a6247be-315d-4602-98a9-a97e90558832" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_b251dc66-3ad3-43ae-af2d-e75c795fb309" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_d12eb293-ebdf-4ed6-a3f5-587845d3e78a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_b251dc66-3ad3-43ae-af2d-e75c795fb309" xlink:to="loc_us-gaap_SubsequentEventMember_d12eb293-ebdf-4ed6-a3f5-587845d3e78a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_00abbf80-2f5b-4872-a925-d780823696c8" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_LegalMattersTable_240a1450-ee10-456d-9274-baad423bc3a7" xlink:to="loc_ppl_ByCompanyAxis_00abbf80-2f5b-4872-a925-d780823696c8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_00abbf80-2f5b-4872-a925-d780823696c8_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_00abbf80-2f5b-4872-a925-d780823696c8" xlink:to="loc_ppl_ByCompanyDomain_00abbf80-2f5b-4872-a925-d780823696c8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_0ff61a54-a117-4903-be4b-8c9a70802960" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_00abbf80-2f5b-4872-a925-d780823696c8" xlink:to="loc_ppl_ByCompanyDomain_0ff61a54-a117-4903-be4b-8c9a70802960" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandEnergyMember_77ad6e75-7c8d-4c32-90d8-9fea0841e2a0" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandEnergyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_0ff61a54-a117-4903-be4b-8c9a70802960" xlink:to="loc_ppl_RhodeIslandEnergyMember_77ad6e75-7c8d-4c32-90d8-9fea0841e2a0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_66d0faf5-9ceb-4463-a961-9d215499e3db" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_LegalMattersTable_240a1450-ee10-456d-9274-baad423bc3a7" xlink:to="loc_srt_RangeAxis_66d0faf5-9ceb-4463-a961-9d215499e3db" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_66d0faf5-9ceb-4463-a961-9d215499e3db_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_66d0faf5-9ceb-4463-a961-9d215499e3db" xlink:to="loc_srt_RangeMember_66d0faf5-9ceb-4463-a961-9d215499e3db_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e2d7374c-5bcf-4c85-b527-74235198981f" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_66d0faf5-9ceb-4463-a961-9d215499e3db" xlink:to="loc_srt_RangeMember_e2d7374c-5bcf-4c85-b527-74235198981f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_bec9394e-2b29-4cbf-b6b9-1b9bdb609a24" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_e2d7374c-5bcf-4c85-b527-74235198981f" xlink:to="loc_srt_MinimumMember_bec9394e-2b29-4cbf-b6b9-1b9bdb609a24" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_122857e0-892f-4ab1-86c1-9c0e25678cea" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_e2d7374c-5bcf-4c85-b527-74235198981f" xlink:to="loc_srt_MaximumMember_122857e0-892f-4ab1-86c1-9c0e25678cea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_3298e31d-53af-4f28-b041-90bc58398a0a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_3298e31d-53af-4f28-b041-90bc58398a0a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears_9468197a-0215-460b-ad5a-7686561fba3e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_3298e31d-53af-4f28-b041-90bc58398a0a" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears_9468197a-0215-460b-ad5a-7686561fba3e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LTCSRenewableEnergyContractThreeStateProcurementPower_7704ebda-8536-4b23-b06e-e5cc7450f482" xlink:href="ppl-20250630.xsd#ppl_LTCSRenewableEnergyContractThreeStateProcurementPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_ppl_LTCSRenewableEnergyContractThreeStateProcurementPower_7704ebda-8536-4b23-b06e-e5cc7450f482" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LTCSRenewableEnergyContractDeepwaterAgreementPower_553d0c10-ee79-4649-b078-f6cbe3ca2292" xlink:href="ppl-20250630.xsd#ppl_LTCSRenewableEnergyContractDeepwaterAgreementPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_ppl_LTCSRenewableEnergyContractDeepwaterAgreementPower_553d0c10-ee79-4649-b078-f6cbe3ca2292" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LTCSRenewableEnergyContractSecondSolicitationPower_e8002ad6-7d5f-4e28-ac23-971370d0b5e2" xlink:href="ppl-20250630.xsd#ppl_LTCSRenewableEnergyContractSecondSolicitationPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_ppl_LTCSRenewableEnergyContractSecondSolicitationPower_e8002ad6-7d5f-4e28-ac23-971370d0b5e2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LTCSRenewableEnergyContractThirdSolicitationPower_d99b5b92-f990-48ea-ae37-f0768b09e91c" xlink:href="ppl-20250630.xsd#ppl_LTCSRenewableEnergyContractThirdSolicitationPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_ppl_LTCSRenewableEnergyContractThirdSolicitationPower_d99b5b92-f990-48ea-ae37-f0768b09e91c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LTCSRenewableEnergyContractFourthSolicitationPower_87980272-1b69-4f9d-8323-5f3d82e5e6e7" xlink:href="ppl-20250630.xsd#ppl_LTCSRenewableEnergyContractFourthSolicitationPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_ppl_LTCSRenewableEnergyContractFourthSolicitationPower_87980272-1b69-4f9d-8323-5f3d82e5e6e7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LTCSRenewableEnergyContractOffshoreWindEnergyProcurementPower_aa5fc670-95b2-4e0b-ba1e-fc92480035de" xlink:href="ppl-20250630.xsd#ppl_LTCSRenewableEnergyContractOffshoreWindEnergyProcurementPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_ppl_LTCSRenewableEnergyContractOffshoreWindEnergyProcurementPower_aa5fc670-95b2-4e0b-ba1e-fc92480035de" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LTCSRenewableEnergyContractFifthSolicitationPower_e8db7605-17b0-483a-858c-004b7a6b9085" xlink:href="ppl-20250630.xsd#ppl_LTCSRenewableEnergyContractFifthSolicitationPower"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_ppl_LTCSRenewableEnergyContractFifthSolicitationPower_e8db7605-17b0-483a-858c-004b7a6b9085" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AmountOfMWRequiredToMeetLTCSRenewableEnergyContractingCapacityRequirement_112089f7-93a3-4eb9-a0ce-ecde960ce28e" xlink:href="ppl-20250630.xsd#ppl_AmountOfMWRequiredToMeetLTCSRenewableEnergyContractingCapacityRequirement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_ppl_AmountOfMWRequiredToMeetLTCSRenewableEnergyContractingCapacityRequirement_112089f7-93a3-4eb9-a0ce-ecde960ce28e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_UnrecordedUnconditionalPurchaseObligationToBePaidYearsTwoAndThree_ebfff8e6-13e3-4cbb-af98-e218bc4b9309" xlink:href="ppl-20250630.xsd#ppl_UnrecordedUnconditionalPurchaseObligationToBePaidYearsTwoAndThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_ppl_UnrecordedUnconditionalPurchaseObligationToBePaidYearsTwoAndThree_ebfff8e6-13e3-4cbb-af98-e218bc4b9309" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LTCSRenewableEnergyContractingCapacityRequirement_4525310b-80bb-4d96-8fd0-aaff67afa43c" xlink:href="ppl-20250630.xsd#ppl_LTCSRenewableEnergyContractingCapacityRequirement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_ppl_LTCSRenewableEnergyContractingCapacityRequirement_4525310b-80bb-4d96-8fd0-aaff67afa43c" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_UnrecordedUnconditionalPurchaseObligationToBePaidYearsFourAndFive_8797fbee-b489-4065-bde6-22d5ceeb287b" xlink:href="ppl-20250630.xsd#ppl_UnrecordedUnconditionalPurchaseObligationToBePaidYearsFourAndFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_ppl_UnrecordedUnconditionalPurchaseObligationToBePaidYearsFourAndFive_8797fbee-b489-4065-bde6-22d5ceeb287b" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear_f543be23-eb79-49fe-b762-0a9fda033822" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear_f543be23-eb79-49fe-b762-0a9fda033822" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ACESRenewableEnergyContractingCapacityRequirement_77c9a371-ed67-4a84-aba4-16333ab7ee9c" xlink:href="ppl-20250630.xsd#ppl_ACESRenewableEnergyContractingCapacityRequirement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_ppl_ACESRenewableEnergyContractingCapacityRequirement_77c9a371-ed67-4a84-aba4-16333ab7ee9c" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ACESOffshoreWindProposal_f521b33e-39e0-4c97-8d3f-4bf9787d610f" xlink:href="ppl-20250630.xsd#ppl_ACESOffshoreWindProposal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LegalMattersLineItems_1fb209fb-83b9-4eab-b5e6-59366a980952" xlink:to="loc_ppl_ACESOffshoreWindProposal_f521b33e-39e0-4c97-8d3f-4bf9787d610f" xlink:type="arc" order="14"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/RelatedPartyTransactionsDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#RelatedPartyTransactionsDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/RelatedPartyTransactionsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_885746d9-016d-4322-90c5-c4b4d0cec9af" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e8f0a2c2-07da-4f8b-954d-5ff4ebc4e2dc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_885746d9-016d-4322-90c5-c4b4d0cec9af" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e8f0a2c2-07da-4f8b-954d-5ff4ebc4e2dc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8839efbf-b93e-4d67-8c79-b11e0a1f5bfb" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e8f0a2c2-07da-4f8b-954d-5ff4ebc4e2dc" xlink:to="loc_dei_LegalEntityAxis_8839efbf-b93e-4d67-8c79-b11e0a1f5bfb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8839efbf-b93e-4d67-8c79-b11e0a1f5bfb_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8839efbf-b93e-4d67-8c79-b11e0a1f5bfb" xlink:to="loc_dei_EntityDomain_8839efbf-b93e-4d67-8c79-b11e0a1f5bfb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_dcc3bd48-99fd-4abb-bbb2-9d300729b2ce" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8839efbf-b93e-4d67-8c79-b11e0a1f5bfb" xlink:to="loc_dei_EntityDomain_dcc3bd48-99fd-4abb-bbb2-9d300729b2ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_644c9cff-c9f7-454b-bf4a-e7db0fc6fe14" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_dcc3bd48-99fd-4abb-bbb2-9d300729b2ce" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_644c9cff-c9f7-454b-bf4a-e7db0fc6fe14" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_6172e021-cba2-47a3-8f10-e5f1def01ff8" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_dcc3bd48-99fd-4abb-bbb2-9d300729b2ce" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_6172e021-cba2-47a3-8f10-e5f1def01ff8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_b3a919ee-5424-4fbc-beaf-c7171a674d18" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_dcc3bd48-99fd-4abb-bbb2-9d300729b2ce" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_b3a919ee-5424-4fbc-beaf-c7171a674d18" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_40b5543d-731e-4804-bd59-78f383e64d5a" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_dcc3bd48-99fd-4abb-bbb2-9d300729b2ce" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_40b5543d-731e-4804-bd59-78f383e64d5a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCompanyMember_59f074b7-3081-4735-a6d1-ff09579bbb8d" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_dcc3bd48-99fd-4abb-bbb2-9d300729b2ce" xlink:to="loc_ppl_KentuckyUtilitiesCompanyMember_59f074b7-3081-4735-a6d1-ff09579bbb8d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_0a6e1d32-4009-48a3-9ec3-db9a98fc35ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e8f0a2c2-07da-4f8b-954d-5ff4ebc4e2dc" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_0a6e1d32-4009-48a3-9ec3-db9a98fc35ca" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_0a6e1d32-4009-48a3-9ec3-db9a98fc35ca_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_0a6e1d32-4009-48a3-9ec3-db9a98fc35ca" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_0a6e1d32-4009-48a3-9ec3-db9a98fc35ca_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_2088436a-9b66-436d-aa04-a56da6e1f60c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_0a6e1d32-4009-48a3-9ec3-db9a98fc35ca" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_2088436a-9b66-436d-aa04-a56da6e1f60c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccountsreceivablefromaffiliatesMember_e91828f7-4107-4a51-8df2-aca0baee783c" xlink:href="ppl-20250630.xsd#ppl_AccountsreceivablefromaffiliatesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_2088436a-9b66-436d-aa04-a56da6e1f60c" xlink:to="loc_ppl_AccountsreceivablefromaffiliatesMember_e91828f7-4107-4a51-8df2-aca0baee783c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentAssetsMember_c7c2593f-1f94-4caa-afe6-18685d738c5f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNoncurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_2088436a-9b66-436d-aa04-a56da6e1f60c" xlink:to="loc_us-gaap_OtherNoncurrentAssetsMember_c7c2593f-1f94-4caa-afe6-18685d738c5f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_501659a3-4d92-49cf-aeec-2997bd46e115" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e8f0a2c2-07da-4f8b-954d-5ff4ebc4e2dc" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_501659a3-4d92-49cf-aeec-2997bd46e115" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_501659a3-4d92-49cf-aeec-2997bd46e115_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_501659a3-4d92-49cf-aeec-2997bd46e115" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_501659a3-4d92-49cf-aeec-2997bd46e115_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_a4b026b0-22ac-4a31-92e5-1b451b22d3ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_501659a3-4d92-49cf-aeec-2997bd46e115" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_a4b026b0-22ac-4a31-92e5-1b451b22d3ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NotePayableMember_55724640-22b4-4c72-97dd-c045197de2f8" xlink:href="ppl-20250630.xsd#ppl_NotePayableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_a4b026b0-22ac-4a31-92e5-1b451b22d3ed" xlink:to="loc_ppl_NotePayableMember_55724640-22b4-4c72-97dd-c045197de2f8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NotePayable1Member_384e3fb0-0b44-43a0-b998-7711c9bede57" xlink:href="ppl-20250630.xsd#ppl_NotePayable1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_a4b026b0-22ac-4a31-92e5-1b451b22d3ed" xlink:to="loc_ppl_NotePayable1Member_384e3fb0-0b44-43a0-b998-7711c9bede57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NotePayable2Member_5cb7e2e4-fe69-4c61-80bb-f6cdb5f94681" xlink:href="ppl-20250630.xsd#ppl_NotePayable2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_a4b026b0-22ac-4a31-92e5-1b451b22d3ed" xlink:to="loc_ppl_NotePayable2Member_5cb7e2e4-fe69-4c61-80bb-f6cdb5f94681" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d865aee0-0652-481d-b230-27404beab946" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e8f0a2c2-07da-4f8b-954d-5ff4ebc4e2dc" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d865aee0-0652-481d-b230-27404beab946" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_d865aee0-0652-481d-b230-27404beab946_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d865aee0-0652-481d-b230-27404beab946" xlink:to="loc_us-gaap_RelatedPartyDomain_d865aee0-0652-481d-b230-27404beab946_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_a0e44b7c-c6a9-4044-8d41-2ebd99465e0f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d865aee0-0652-481d-b230-27404beab946" xlink:to="loc_us-gaap_RelatedPartyDomain_a0e44b7c-c6a9-4044-8d41-2ebd99465e0f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ServicesCompanyAffiliateMember_d6de1a27-4416-4480-8761-73d5a95bfab1" xlink:href="ppl-20250630.xsd#ppl_ServicesCompanyAffiliateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_a0e44b7c-c6a9-4044-8d41-2ebd99465e0f" xlink:to="loc_ppl_ServicesCompanyAffiliateMember_d6de1a27-4416-4480-8761-73d5a95bfab1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EuServicesCompanyAffiliateMember_cc40aebf-6339-492f-bebf-db6b4fb7921f" xlink:href="ppl-20250630.xsd#ppl_EuServicesCompanyAffiliateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_a0e44b7c-c6a9-4044-8d41-2ebd99465e0f" xlink:to="loc_ppl_EuServicesCompanyAffiliateMember_cc40aebf-6339-492f-bebf-db6b4fb7921f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplEnergyFundingCorporationMember_52ed465e-856a-4490-9d19-453b1d823f5c" xlink:href="ppl-20250630.xsd#ppl_PplEnergyFundingCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_a0e44b7c-c6a9-4044-8d41-2ebd99465e0f" xlink:to="loc_ppl_PplEnergyFundingCorporationMember_52ed465e-856a-4490-9d19-453b1d823f5c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AffiliatedEntityMember_ad154929-afe6-47f4-b3fe-3994f7f8b6da" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_AffiliatedEntityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_a0e44b7c-c6a9-4044-8d41-2ebd99465e0f" xlink:to="loc_srt_AffiliatedEntityMember_ad154929-afe6-47f4-b3fe-3994f7f8b6da" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ParentAndAffiliateMember_3377e89e-5d1d-4e88-8ddd-ef78339376b9" xlink:href="ppl-20250630.xsd#ppl_ParentAndAffiliateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_a0e44b7c-c6a9-4044-8d41-2ebd99465e0f" xlink:to="loc_ppl_ParentAndAffiliateMember_3377e89e-5d1d-4e88-8ddd-ef78339376b9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CompanyAffiliateMember_32dfe7af-8bd9-417c-90e4-4a9848247086" xlink:href="ppl-20250630.xsd#ppl_CompanyAffiliateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_a0e44b7c-c6a9-4044-8d41-2ebd99465e0f" xlink:to="loc_ppl_CompanyAffiliateMember_32dfe7af-8bd9-417c-90e4-4a9848247086" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LGAndEAndKUServicesCompanyMember_b7f6b195-5368-4cda-8d80-1a1254c2725e" xlink:href="ppl-20250630.xsd#ppl_LGAndEAndKUServicesCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_a0e44b7c-c6a9-4044-8d41-2ebd99465e0f" xlink:to="loc_ppl_LGAndEAndKUServicesCompanyMember_b7f6b195-5368-4cda-8d80-1a1254c2725e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CompanyAfiliate1Member_28523503-d3ba-47fd-81a7-ffe82d6800e3" xlink:href="ppl-20250630.xsd#ppl_CompanyAfiliate1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_a0e44b7c-c6a9-4044-8d41-2ebd99465e0f" xlink:to="loc_ppl_CompanyAfiliate1Member_28523503-d3ba-47fd-81a7-ffe82d6800e3" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CEPReservesIncMember_3d5da8b9-c6bc-4d9c-bad3-fb99813f825e" xlink:href="ppl-20250630.xsd#ppl_CEPReservesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_a0e44b7c-c6a9-4044-8d41-2ebd99465e0f" xlink:to="loc_ppl_CEPReservesIncMember_3d5da8b9-c6bc-4d9c-bad3-fb99813f825e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_fa67485e-0803-4f9d-b656-5b3840c0a9c5" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e8f0a2c2-07da-4f8b-954d-5ff4ebc4e2dc" xlink:to="loc_srt_CounterpartyNameAxis_fa67485e-0803-4f9d-b656-5b3840c0a9c5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_fa67485e-0803-4f9d-b656-5b3840c0a9c5_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_fa67485e-0803-4f9d-b656-5b3840c0a9c5" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_fa67485e-0803-4f9d-b656-5b3840c0a9c5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_ad39dac5-1d13-423c-9cf7-1f1626518135" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_fa67485e-0803-4f9d-b656-5b3840c0a9c5" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_ad39dac5-1d13-423c-9cf7-1f1626518135" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_UnaffiliatedThirdPartyEntityMember_6cf4ca0f-87c1-4cfe-8089-a89a49759a6f" xlink:href="ppl-20250630.xsd#ppl_UnaffiliatedThirdPartyEntityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_ad39dac5-1d13-423c-9cf7-1f1626518135" xlink:to="loc_ppl_UnaffiliatedThirdPartyEntityMember_6cf4ca0f-87c1-4cfe-8089-a89a49759a6f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SupportCostsDetailsAbstract_50fb5ce2-83d3-4e2d-af89-7a652b48bd66" xlink:href="ppl-20250630.xsd#ppl_SupportCostsDetailsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_885746d9-016d-4322-90c5-c4b4d0cec9af" xlink:to="loc_ppl_SupportCostsDetailsAbstract_50fb5ce2-83d3-4e2d-af89-7a652b48bd66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAmountsOfTransaction_9761ce5d-81bf-4e4c-a42e-10c8af290d30" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionAmountsOfTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_SupportCostsDetailsAbstract_50fb5ce2-83d3-4e2d-af89-7a652b48bd66" xlink:to="loc_us-gaap_RelatedPartyTransactionAmountsOfTransaction_9761ce5d-81bf-4e4c-a42e-10c8af290d30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IntercompanyBorrowingsNumericAbstract_b1c4fff6-3038-423d-a2a2-610b0267b258" xlink:href="ppl-20250630.xsd#ppl_IntercompanyBorrowingsNumericAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_885746d9-016d-4322-90c5-c4b4d0cec9af" xlink:to="loc_ppl_IntercompanyBorrowingsNumericAbstract_b1c4fff6-3038-423d-a2a2-610b0267b258" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_5e21cd8f-56c8-4a33-83a0-97f896328753" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IntercompanyBorrowingsNumericAbstract_b1c4fff6-3038-423d-a2a2-610b0267b258" xlink:to="loc_us-gaap_DebtInstrumentTerm_5e21cd8f-56c8-4a33-83a0-97f896328753" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IntercompanyNoteAffiliateMaximumBorrowingCapacity_549cd569-dbe2-48e5-8ff5-9739cbc474b9" xlink:href="ppl-20250630.xsd#ppl_IntercompanyNoteAffiliateMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IntercompanyBorrowingsNumericAbstract_b1c4fff6-3038-423d-a2a2-610b0267b258" xlink:to="loc_ppl_IntercompanyNoteAffiliateMaximumBorrowingCapacity_549cd569-dbe2-48e5-8ff5-9739cbc474b9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IntercompanyMoneyPoolAgreementUnusedBorrowingCapacity_d0e0ce1a-f868-487e-813e-db6a91cf5e10" xlink:href="ppl-20250630.xsd#ppl_IntercompanyMoneyPoolAgreementUnusedBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IntercompanyBorrowingsNumericAbstract_b1c4fff6-3038-423d-a2a2-610b0267b258" xlink:to="loc_ppl_IntercompanyMoneyPoolAgreementUnusedBorrowingCapacity_d0e0ce1a-f868-487e-813e-db6a91cf5e10" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_ceb04bc7-dd22-41e7-85a6-6120755a6101" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IntercompanyBorrowingsNumericAbstract_b1c4fff6-3038-423d-a2a2-610b0267b258" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_ceb04bc7-dd22-41e7-85a6-6120755a6101" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionRate_e7369b72-261e-439b-87c5-9b98797d0ce7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_IntercompanyBorrowingsNumericAbstract_b1c4fff6-3038-423d-a2a2-610b0267b258" xlink:to="loc_us-gaap_RelatedPartyTransactionRate_e7369b72-261e-439b-87c5-9b98797d0ce7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_VEBAFundsReceivable_a79e515a-0beb-4027-ab41-b48ec3d14bac" xlink:href="ppl-20250630.xsd#ppl_VEBAFundsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_885746d9-016d-4322-90c5-c4b4d0cec9af" xlink:to="loc_ppl_VEBAFundsReceivable_a79e515a-0beb-4027-ab41-b48ec3d14bac" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_IntercompanyBorrowingsOutstanding_dab576ec-070f-4c90-84cf-3a9308050222" xlink:href="ppl-20250630.xsd#ppl_IntercompanyBorrowingsOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_885746d9-016d-4322-90c5-c4b4d0cec9af" xlink:to="loc_ppl_IntercompanyBorrowingsOutstanding_dab576ec-070f-4c90-84cf-3a9308050222" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NotesPayableRelatedPartiesCurrent_ae2d86e7-37fb-4ca2-9329-8736e2a9c415" xlink:href="ppl-20250630.xsd#ppl_NotesPayableRelatedPartiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_885746d9-016d-4322-90c5-c4b4d0cec9af" xlink:to="loc_ppl_NotesPayableRelatedPartiesCurrent_ae2d86e7-37fb-4ca2-9329-8736e2a9c415" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NotesReceivableFromRelatedPartiesCurrent_99c60ccd-fae0-434a-9ac2-fa1f34003ee1" xlink:href="ppl-20250630.xsd#ppl_NotesReceivableFromRelatedPartiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_885746d9-016d-4322-90c5-c4b4d0cec9af" xlink:to="loc_ppl_NotesReceivableFromRelatedPartiesCurrent_99c60ccd-fae0-434a-9ac2-fa1f34003ee1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayable_6e1fb3e3-30e8-4f32-ac90-47f546df4c84" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_885746d9-016d-4322-90c5-c4b4d0cec9af" xlink:to="loc_us-gaap_NotesPayable_6e1fb3e3-30e8-4f32-ac90-47f546df4c84" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayableRelatedPartyTypeExtensibleEnumeration_3d5297e1-ef89-475c-9d57-7208a1787003" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesPayableRelatedPartyTypeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_885746d9-016d-4322-90c5-c4b4d0cec9af" xlink:to="loc_us-gaap_NotesPayableRelatedPartyTypeExtensibleEnumeration_3d5297e1-ef89-475c-9d57-7208a1787003" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_85b0d0af-de78-4385-9371-3b75d5b7aec7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_885746d9-016d-4322-90c5-c4b4d0cec9af" xlink:to="loc_us-gaap_NotesReceivableNet_85b0d0af-de78-4385-9371-3b75d5b7aec7" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAfterAllowanceForCreditLossRelatedPartyCounterpartyNameExtensibleEnumeration_15404a00-a98f-4f5c-bd36-07c04ab81b1c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableAfterAllowanceForCreditLossRelatedPartyCounterpartyNameExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_885746d9-016d-4322-90c5-c4b4d0cec9af" xlink:to="loc_us-gaap_FinancingReceivableAfterAllowanceForCreditLossRelatedPartyCounterpartyNameExtensibleEnumeration_15404a00-a98f-4f5c-bd36-07c04ab81b1c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAfterAllowanceForCreditLossRelatedPartyTypeExtensibleEnumeration_1c23d37d-9214-4313-82f7-9b981c125c7f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableAfterAllowanceForCreditLossRelatedPartyTypeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_885746d9-016d-4322-90c5-c4b4d0cec9af" xlink:to="loc_us-gaap_FinancingReceivableAfterAllowanceForCreditLossRelatedPartyTypeExtensibleEnumeration_1c23d37d-9214-4313-82f7-9b981c125c7f" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayableRelatedPartyTypeExtensibleEnumeration_54ddcbde-c6f6-4eac-afdd-230e68254e41" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesPayableRelatedPartyTypeExtensibleEnumeration"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAfterAllowanceForCreditLossRelatedPartyTypeExtensibleEnumeration_7179d059-34a8-48ee-94af-6013c0b0bde7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableAfterAllowanceForCreditLossRelatedPartyTypeExtensibleEnumeration"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/OtherIncomeExpensenetDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#OtherIncomeExpensenetDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/OtherIncomeExpensenetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherIncomeExpenseNetLineItems_b0c5065c-5528-4a44-94ff-abf76647e869" xlink:href="ppl-20250630.xsd#ppl_OtherIncomeExpenseNetLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherNonoperatingIncomeExpenseTable_0c424143-131e-4028-99bd-47022dff1e3d" xlink:href="ppl-20250630.xsd#ppl_OtherNonoperatingIncomeExpenseTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_OtherIncomeExpenseNetLineItems_b0c5065c-5528-4a44-94ff-abf76647e869" xlink:to="loc_ppl_OtherNonoperatingIncomeExpenseTable_0c424143-131e-4028-99bd-47022dff1e3d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_ad952b4a-7a69-456e-9da3-3598b117093f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_OtherNonoperatingIncomeExpenseTable_0c424143-131e-4028-99bd-47022dff1e3d" xlink:to="loc_dei_LegalEntityAxis_ad952b4a-7a69-456e-9da3-3598b117093f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ad952b4a-7a69-456e-9da3-3598b117093f_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_ad952b4a-7a69-456e-9da3-3598b117093f" xlink:to="loc_dei_EntityDomain_ad952b4a-7a69-456e-9da3-3598b117093f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_92df41f5-8bc7-4733-a0fb-30c890e278d2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_ad952b4a-7a69-456e-9da3-3598b117093f" xlink:to="loc_dei_EntityDomain_92df41f5-8bc7-4733-a0fb-30c890e278d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_20591ce1-41e3-4114-bffd-2e8053dfad3d" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_92df41f5-8bc7-4733-a0fb-30c890e278d2" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_20591ce1-41e3-4114-bffd-2e8053dfad3d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_93777fc2-7a39-48b5-9f2d-2f3f7e1893e0" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_92df41f5-8bc7-4733-a0fb-30c890e278d2" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_93777fc2-7a39-48b5-9f2d-2f3f7e1893e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_bca54744-3a98-49ef-90f5-e2146c839c20" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_92df41f5-8bc7-4733-a0fb-30c890e278d2" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_bca54744-3a98-49ef-90f5-e2146c839c20" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIncomeDisclosureNonoperatingAbstract_cb4d06c8-56c5-45dc-9c29-5eeb09aed7b4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherIncomeDisclosureNonoperatingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherIncomeExpenseNetLineItems_b0c5065c-5528-4a44-94ff-abf76647e869" xlink:to="loc_us-gaap_OtherIncomeDisclosureNonoperatingAbstract_cb4d06c8-56c5-45dc-9c29-5eeb09aed7b4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossFromPriceRiskManagementActivity_7e8cdaaf-c94f-4c43-9356-d9ab932bd811" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossFromPriceRiskManagementActivity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherIncomeDisclosureNonoperatingAbstract_cb4d06c8-56c5-45dc-9c29-5eeb09aed7b4" xlink:to="loc_us-gaap_GainLossFromPriceRiskManagementActivity_7e8cdaaf-c94f-4c43-9356-d9ab932bd811" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DefinedBenefitPlanNetPeriodicBenefitCostCreditNonService_faae40b6-1420-488f-af04-fb5779507ba8" xlink:href="ppl-20250630.xsd#ppl_DefinedBenefitPlanNetPeriodicBenefitCostCreditNonService"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherIncomeDisclosureNonoperatingAbstract_cb4d06c8-56c5-45dc-9c29-5eeb09aed7b4" xlink:to="loc_ppl_DefinedBenefitPlanNetPeriodicBenefitCostCreditNonService_faae40b6-1420-488f-af04-fb5779507ba8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity_b9772bd1-075c-441d-89f0-6894c30f5dee" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherIncomeDisclosureNonoperatingAbstract_cb4d06c8-56c5-45dc-9c29-5eeb09aed7b4" xlink:to="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity_b9772bd1-075c-441d-89f0-6894c30f5dee" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherNonoperatingIncomeExpenseMiscellaneous_3d18bc1c-0e2a-452a-8bc4-c85d8b901afe" xlink:href="ppl-20250630.xsd#ppl_OtherNonoperatingIncomeExpenseMiscellaneous"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherIncomeDisclosureNonoperatingAbstract_cb4d06c8-56c5-45dc-9c29-5eeb09aed7b4" xlink:to="loc_ppl_OtherNonoperatingIncomeExpenseMiscellaneous_3d18bc1c-0e2a-452a-8bc4-c85d8b901afe" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncome_7110300c-37a5-4ed7-b6ec-dcde778d0565" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherIncomeDisclosureNonoperatingAbstract_cb4d06c8-56c5-45dc-9c29-5eeb09aed7b4" xlink:to="loc_us-gaap_OtherNonoperatingIncome_7110300c-37a5-4ed7-b6ec-dcde778d0565" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherExpenseDisclosureNonoperatingAbstract_03871799-df0d-484b-8d2e-9134ae8c64a4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherExpenseDisclosureNonoperatingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherIncomeExpenseNetLineItems_b0c5065c-5528-4a44-94ff-abf76647e869" xlink:to="loc_us-gaap_OtherExpenseDisclosureNonoperatingAbstract_03871799-df0d-484b-8d2e-9134ae8c64a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CharitableContributions_bac6ae12-7e95-4318-8dc6-9e9edaa9b4ce" xlink:href="ppl-20250630.xsd#ppl_CharitableContributions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherExpenseDisclosureNonoperatingAbstract_03871799-df0d-484b-8d2e-9134ae8c64a4" xlink:to="loc_ppl_CharitableContributions_bac6ae12-7e95-4318-8dc6-9e9edaa9b4ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_StrategicCorporateInitiatives_b19ff176-cdec-48bb-afaf-3f1067edb887" xlink:href="ppl-20250630.xsd#ppl_StrategicCorporateInitiatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherExpenseDisclosureNonoperatingAbstract_03871799-df0d-484b-8d2e-9134ae8c64a4" xlink:to="loc_ppl_StrategicCorporateInitiatives_b19ff176-cdec-48bb-afaf-3f1067edb887" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherNonoperatingExpenseMiscellaneous_50427465-3eaf-41e8-8ff9-c3b68b0ef2c8" xlink:href="ppl-20250630.xsd#ppl_OtherNonoperatingExpenseMiscellaneous"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherExpenseDisclosureNonoperatingAbstract_03871799-df0d-484b-8d2e-9134ae8c64a4" xlink:to="loc_ppl_OtherNonoperatingExpenseMiscellaneous_50427465-3eaf-41e8-8ff9-c3b68b0ef2c8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingExpense_335676a2-fca1-4987-a30e-e6a7f992862c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherExpenseDisclosureNonoperatingAbstract_03871799-df0d-484b-8d2e-9134ae8c64a4" xlink:to="loc_us-gaap_OtherNonoperatingExpense_335676a2-fca1-4987-a30e-e6a7f992862c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_1d9feb1e-ec1a-41c4-813b-dfa3c5ec6363" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherIncomeExpenseNetLineItems_b0c5065c-5528-4a44-94ff-abf76647e869" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_1d9feb1e-ec1a-41c4-813b-dfa3c5ec6363" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_97ae9735-4882-476a-babb-709e91581c6d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OtherIncomeExpenseNetLineItems_b0c5065c-5528-4a44-94ff-abf76647e869" xlink:to="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_97ae9735-4882-476a-babb-709e91581c6d" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/FairValueMeasurementsAssetsandLiabilitiesMeasuredonRecurringBasisTableDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#FairValueMeasurementsAssetsandLiabilitiesMeasuredonRecurringBasisTableDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/FairValueMeasurementsAssetsandLiabilitiesMeasuredonRecurringBasisTableDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_2a3f0e2a-9dc8-4abb-a77b-7b00f7eab1f8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_90b59c93-1b73-494a-afb5-d5886a207280" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_2a3f0e2a-9dc8-4abb-a77b-7b00f7eab1f8" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_90b59c93-1b73-494a-afb5-d5886a207280" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_14294925-60e7-43db-8cbc-d54a01c903c6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_90b59c93-1b73-494a-afb5-d5886a207280" xlink:to="loc_dei_LegalEntityAxis_14294925-60e7-43db-8cbc-d54a01c903c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_14294925-60e7-43db-8cbc-d54a01c903c6_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_14294925-60e7-43db-8cbc-d54a01c903c6" xlink:to="loc_dei_EntityDomain_14294925-60e7-43db-8cbc-d54a01c903c6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8f8f82c4-10af-4e77-a8a6-9010aae2b146" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_14294925-60e7-43db-8cbc-d54a01c903c6" xlink:to="loc_dei_EntityDomain_8f8f82c4-10af-4e77-a8a6-9010aae2b146" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_2d17d538-42e1-4b7a-a02d-33f854bbcb5c" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8f8f82c4-10af-4e77-a8a6-9010aae2b146" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_2d17d538-42e1-4b7a-a02d-33f854bbcb5c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_96f55aa1-56b9-4ef0-a26f-207e0624beb1" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8f8f82c4-10af-4e77-a8a6-9010aae2b146" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_96f55aa1-56b9-4ef0-a26f-207e0624beb1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_d05ffa90-784d-4d9d-ad0e-5f60c5aee8a1" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8f8f82c4-10af-4e77-a8a6-9010aae2b146" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_d05ffa90-784d-4d9d-ad0e-5f60c5aee8a1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_61b9730a-27b3-46e6-a001-4e650a4dec3b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_90b59c93-1b73-494a-afb5-d5886a207280" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_61b9730a-27b3-46e6-a001-4e650a4dec3b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_61b9730a-27b3-46e6-a001-4e650a4dec3b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_61b9730a-27b3-46e6-a001-4e650a4dec3b" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_61b9730a-27b3-46e6-a001-4e650a4dec3b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_9add6766-3911-4868-a92a-39bc91f83993" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_61b9730a-27b3-46e6-a001-4e650a4dec3b" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_9add6766-3911-4868-a92a-39bc91f83993" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_befcc8e9-a39b-47b6-a670-199b312ede44" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_9add6766-3911-4868-a92a-39bc91f83993" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_befcc8e9-a39b-47b6-a670-199b312ede44" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsNonrecurringMember_93560c20-ac22-4ed2-8077-2de04c57f4ff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsNonrecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_9add6766-3911-4868-a92a-39bc91f83993" xlink:to="loc_us-gaap_FairValueMeasurementsNonrecurringMember_93560c20-ac22-4ed2-8077-2de04c57f4ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_2a72961f-ff40-4b23-a415-7c4e9694206f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_90b59c93-1b73-494a-afb5-d5886a207280" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_2a72961f-ff40-4b23-a415-7c4e9694206f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2a72961f-ff40-4b23-a415-7c4e9694206f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_2a72961f-ff40-4b23-a415-7c4e9694206f" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2a72961f-ff40-4b23-a415-7c4e9694206f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_d87730ef-0f0e-4330-bb6d-104a67898cb9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_2a72961f-ff40-4b23-a415-7c4e9694206f" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_d87730ef-0f0e-4330-bb6d-104a67898cb9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_07c2f234-e68c-4168-9949-5f379fb5cfb7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_d87730ef-0f0e-4330-bb6d-104a67898cb9" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_07c2f234-e68c-4168-9949-5f379fb5cfb7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_48a8d45e-d91c-437c-8922-3f2de6b2edeb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_d87730ef-0f0e-4330-bb6d-104a67898cb9" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_48a8d45e-d91c-437c-8922-3f2de6b2edeb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_cea43f63-ce09-4126-90e9-70395cc1ddf3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_d87730ef-0f0e-4330-bb6d-104a67898cb9" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_cea43f63-ce09-4126-90e9-70395cc1ddf3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_ed3d768a-4fed-4e08-811f-49816ccd03b6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByAssetClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_90b59c93-1b73-494a-afb5-d5886a207280" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_ed3d768a-4fed-4e08-811f-49816ccd03b6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_ed3d768a-4fed-4e08-811f-49816ccd03b6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_ed3d768a-4fed-4e08-811f-49816ccd03b6" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_ed3d768a-4fed-4e08-811f-49816ccd03b6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_d917fb8a-66f8-49ed-9ada-10d71d3701b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_ed3d768a-4fed-4e08-811f-49816ccd03b6" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_d917fb8a-66f8-49ed-9ada-10d71d3701b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GasContractsMember_23a7b06a-6e98-4d98-b515-8a06b3d26cd4" xlink:href="ppl-20250630.xsd#ppl_GasContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_d917fb8a-66f8-49ed-9ada-10d71d3701b7" xlink:to="loc_ppl_GasContractsMember_23a7b06a-6e98-4d98-b515-8a06b3d26cd4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_750cdfcb-001a-4713-8c1a-9d84337aa2ff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_2a3f0e2a-9dc8-4abb-a77b-7b00f7eab1f8" xlink:to="loc_us-gaap_AssetsAbstract_750cdfcb-001a-4713-8c1a-9d84337aa2ff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_53d4733d-5931-4a38-acdb-c7cc1c876d56" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_750cdfcb-001a-4713-8c1a-9d84337aa2ff" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_53d4733d-5931-4a38-acdb-c7cc1c876d56" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsFairValueDisclosure_03927194-823d-48d6-9639-91bbf5ccfbf1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_750cdfcb-001a-4713-8c1a-9d84337aa2ff" xlink:to="loc_us-gaap_OtherAssetsFairValueDisclosure_03927194-823d-48d6-9639-91bbf5ccfbf1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FairValueAssetsMeasuredOnRecurringBasisRestrictedCashAndCashEquivalents_aaebc873-fe79-44c4-979f-65225739bdf4" xlink:href="ppl-20250630.xsd#ppl_FairValueAssetsMeasuredOnRecurringBasisRestrictedCashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_750cdfcb-001a-4713-8c1a-9d84337aa2ff" xlink:to="loc_ppl_FairValueAssetsMeasuredOnRecurringBasisRestrictedCashAndCashEquivalents_aaebc873-fe79-44c4-979f-65225739bdf4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TotalCashCashEquivalentsAndRestrictedCashFairValue_3c3f8396-c4ac-4ddc-9f86-9df3bfb63ff8" xlink:href="ppl-20250630.xsd#ppl_TotalCashCashEquivalentsAndRestrictedCashFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_750cdfcb-001a-4713-8c1a-9d84337aa2ff" xlink:to="loc_ppl_TotalCashCashEquivalentsAndRestrictedCashFairValue_3c3f8396-c4ac-4ddc-9f86-9df3bfb63ff8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_SpecialUseFundsAbstract_f2fab050-6085-44c9-8c98-7612aca1de91" xlink:href="ppl-20250630.xsd#ppl_SpecialUseFundsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_750cdfcb-001a-4713-8c1a-9d84337aa2ff" xlink:to="loc_ppl_SpecialUseFundsAbstract_f2fab050-6085-44c9-8c98-7612aca1de91" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FairValueAssetMeasuredOnRecurringBasisLimitedToUseMoneyMarket_9bf48922-caaf-4611-9f56-1b1e35c9d586" xlink:href="ppl-20250630.xsd#ppl_FairValueAssetMeasuredOnRecurringBasisLimitedToUseMoneyMarket"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_SpecialUseFundsAbstract_f2fab050-6085-44c9-8c98-7612aca1de91" xlink:to="loc_ppl_FairValueAssetMeasuredOnRecurringBasisLimitedToUseMoneyMarket_9bf48922-caaf-4611-9f56-1b1e35c9d586" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FairValueAssetsMeasuredUsingNetAssetValueLimitedToUseCommingledDebtFund_a96ad9c4-b8f2-4852-b953-80d62be3cb19" xlink:href="ppl-20250630.xsd#ppl_FairValueAssetsMeasuredUsingNetAssetValueLimitedToUseCommingledDebtFund"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_SpecialUseFundsAbstract_f2fab050-6085-44c9-8c98-7612aca1de91" xlink:to="loc_ppl_FairValueAssetsMeasuredUsingNetAssetValueLimitedToUseCommingledDebtFund_a96ad9c4-b8f2-4852-b953-80d62be3cb19" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FairValueAssetsMeasuredUsingNetAssetValueLimitedToUseCommingledEquityFund_252c27f5-65af-4c3a-99f1-750d19ea7ba8" xlink:href="ppl-20250630.xsd#ppl_FairValueAssetsMeasuredUsingNetAssetValueLimitedToUseCommingledEquityFund"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_SpecialUseFundsAbstract_f2fab050-6085-44c9-8c98-7612aca1de91" xlink:to="loc_ppl_FairValueAssetsMeasuredUsingNetAssetValueLimitedToUseCommingledEquityFund_252c27f5-65af-4c3a-99f1-750d19ea7ba8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_HealthCareTrustFundAssetsLimitedToUse_dab33ff6-f26c-4f50-9c34-bf182b3c294b" xlink:href="ppl-20250630.xsd#ppl_HealthCareTrustFundAssetsLimitedToUse"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_SpecialUseFundsAbstract_f2fab050-6085-44c9-8c98-7612aca1de91" xlink:to="loc_ppl_HealthCareTrustFundAssetsLimitedToUse_dab33ff6-f26c-4f50-9c34-bf182b3c294b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateDerivativeAssetsAtFairValue_1e9622f6-62ad-4273-890f-58a466466e27" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestRateDerivativeAssetsAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_SpecialUseFundsAbstract_f2fab050-6085-44c9-8c98-7612aca1de91" xlink:to="loc_us-gaap_InterestRateDerivativeAssetsAtFairValue_1e9622f6-62ad-4273-890f-58a466466e27" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GasPurchaseContractFairValueDisclosure_09c13eea-9b1d-4547-8c04-2c6bddabad7c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GasPurchaseContractFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_SpecialUseFundsAbstract_f2fab050-6085-44c9-8c98-7612aca1de91" xlink:to="loc_us-gaap_GasPurchaseContractFairValueDisclosure_09c13eea-9b1d-4547-8c04-2c6bddabad7c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PriceRiskManagementAssetsAbstract_7aa51978-8716-49db-aee7-50f6af20f33e" xlink:href="ppl-20250630.xsd#ppl_PriceRiskManagementAssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_750cdfcb-001a-4713-8c1a-9d84337aa2ff" xlink:to="loc_ppl_PriceRiskManagementAssetsAbstract_7aa51978-8716-49db-aee7-50f6af20f33e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_8719548a-5b66-4891-9e7a-3d28e8013578" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_750cdfcb-001a-4713-8c1a-9d84337aa2ff" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_8719548a-5b66-4891-9e7a-3d28e8013578" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract_b0657a3b-ed07-4ba3-bee4-465751ceeebc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_2a3f0e2a-9dc8-4abb-a77b-7b00f7eab1f8" xlink:to="loc_us-gaap_LiabilitiesAbstract_b0657a3b-ed07-4ba3-bee4-465751ceeebc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LiabilitiesPriceRiskManagementLiabilitiesAbstract_96d5241e-59bc-4788-86b7-45bdd0123b3f" xlink:href="ppl-20250630.xsd#ppl_LiabilitiesPriceRiskManagementLiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_b0657a3b-ed07-4ba3-bee4-465751ceeebc" xlink:to="loc_ppl_LiabilitiesPriceRiskManagementLiabilitiesAbstract_96d5241e-59bc-4788-86b7-45bdd0123b3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateDerivativeLiabilitiesAtFairValue_38529ad5-a8fa-4f93-b3ce-220c49996159" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestRateDerivativeLiabilitiesAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LiabilitiesPriceRiskManagementLiabilitiesAbstract_96d5241e-59bc-4788-86b7-45bdd0123b3f" xlink:to="loc_us-gaap_InterestRateDerivativeLiabilitiesAtFairValue_38529ad5-a8fa-4f93-b3ce-220c49996159" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_GasContractsLiability_0d7a86f8-936a-47c1-a998-f267bbae1009" xlink:href="ppl-20250630.xsd#ppl_GasContractsLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestRateDerivativeLiabilitiesAtFairValue_38529ad5-a8fa-4f93-b3ce-220c49996159" xlink:to="loc_ppl_GasContractsLiability_0d7a86f8-936a-47c1-a998-f267bbae1009" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_f38cea6d-07a5-47ff-9a05-a3e2bf414f04" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_LiabilitiesPriceRiskManagementLiabilitiesAbstract_96d5241e-59bc-4788-86b7-45bdd0123b3f" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_f38cea6d-07a5-47ff-9a05-a3e2bf414f04" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements_bdd717b6-e6f0-4a4c-98c2-e012b5fbd6a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_2a3f0e2a-9dc8-4abb-a77b-7b00f7eab1f8" xlink:to="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements_bdd717b6-e6f0-4a4c-98c2-e012b5fbd6a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases_eb0d2402-617d-4cbd-b4d9-68c1c5074e1e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_2a3f0e2a-9dc8-4abb-a77b-7b00f7eab1f8" xlink:to="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases_eb0d2402-617d-4cbd-b4d9-68c1c5074e1e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs_f3c59b1e-0ea9-4852-9fb0-f09e5937819c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_2a3f0e2a-9dc8-4abb-a77b-7b00f7eab1f8" xlink:to="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs_f3c59b1e-0ea9-4852-9fb0-f09e5937819c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPeriodIncreaseDecrease_7a2c8603-f502-4d32-b649-71a228fb09ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPeriodIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_2a3f0e2a-9dc8-4abb-a77b-7b00f7eab1f8" xlink:to="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPeriodIncreaseDecrease_7a2c8603-f502-4d32-b649-71a228fb09ca" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/FairValueMeasurementsFinancialInstrumentsNotRecordedatFairValueDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#FairValueMeasurementsFinancialInstrumentsNotRecordedatFairValueDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/FairValueMeasurementsFinancialInstrumentsNotRecordedatFairValueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_635bb00b-67af-42ee-92e0-73731ea2f212" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_b14fe784-f841-45a9-81af-869b8c1df262" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_635bb00b-67af-42ee-92e0-73731ea2f212" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_b14fe784-f841-45a9-81af-869b8c1df262" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_9c9274cd-ea63-4f00-83c5-07e593b103fa" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_b14fe784-f841-45a9-81af-869b8c1df262" xlink:to="loc_dei_LegalEntityAxis_9c9274cd-ea63-4f00-83c5-07e593b103fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9c9274cd-ea63-4f00-83c5-07e593b103fa_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_9c9274cd-ea63-4f00-83c5-07e593b103fa" xlink:to="loc_dei_EntityDomain_9c9274cd-ea63-4f00-83c5-07e593b103fa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_630702b0-a083-4217-8976-ee42dc785064" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_9c9274cd-ea63-4f00-83c5-07e593b103fa" xlink:to="loc_dei_EntityDomain_630702b0-a083-4217-8976-ee42dc785064" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_bcf26c8f-fdec-44c7-a074-ee9689bc50d4" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_630702b0-a083-4217-8976-ee42dc785064" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_bcf26c8f-fdec-44c7-a074-ee9689bc50d4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_ad999bc9-7cec-4b94-9afa-a075739ef1da" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_630702b0-a083-4217-8976-ee42dc785064" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_ad999bc9-7cec-4b94-9afa-a075739ef1da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_810d4354-f5d9-456c-b9c5-7afd907a180b" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_630702b0-a083-4217-8976-ee42dc785064" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_810d4354-f5d9-456c-b9c5-7afd907a180b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_35949f08-2149-4768-8f2e-66db5da32519" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_b14fe784-f841-45a9-81af-869b8c1df262" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_35949f08-2149-4768-8f2e-66db5da32519" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_35949f08-2149-4768-8f2e-66db5da32519_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_35949f08-2149-4768-8f2e-66db5da32519" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_35949f08-2149-4768-8f2e-66db5da32519_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_c6f1976f-39d2-423c-abaa-9bdedc2184db" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_35949f08-2149-4768-8f2e-66db5da32519" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_c6f1976f-39d2-423c-abaa-9bdedc2184db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_5cb8445a-bdf5-4a52-8ba3-887dcbc64843" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_c6f1976f-39d2-423c-abaa-9bdedc2184db" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_5cb8445a-bdf5-4a52-8ba3-887dcbc64843" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_7e1a9f54-af3d-4731-a074-964df52d4ec1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_c6f1976f-39d2-423c-abaa-9bdedc2184db" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_7e1a9f54-af3d-4731-a074-964df52d4ec1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_e13a93e5-ac98-4c1a-a0b5-1c62ad53bd44" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_c6f1976f-39d2-423c-abaa-9bdedc2184db" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_e13a93e5-ac98-4c1a-a0b5-1c62ad53bd44" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_364c0946-1d3e-44ec-b884-8a0fd255de7b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_635bb00b-67af-42ee-92e0-73731ea2f212" xlink:to="loc_us-gaap_DebtInstrumentFairValue_364c0946-1d3e-44ec-b884-8a0fd255de7b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesIntroDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#DerivativeInstrumentsandHedgingActivitiesIntroDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesIntroDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MasterNettingArrangementsNumericLineItems_d432195b-e9b6-49cb-976f-1ddd03a0517e" xlink:href="ppl-20250630.xsd#ppl_MasterNettingArrangementsNumericLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_MasterNettingArrangementsTable_d4f9d9a2-1b42-46cb-8369-f6d4f58f92ff" xlink:href="ppl-20250630.xsd#ppl_MasterNettingArrangementsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_MasterNettingArrangementsNumericLineItems_d432195b-e9b6-49cb-976f-1ddd03a0517e" xlink:to="loc_ppl_MasterNettingArrangementsTable_d4f9d9a2-1b42-46cb-8369-f6d4f58f92ff" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_22b67935-2c97-4db5-aeef-1c719e11b004" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_MasterNettingArrangementsTable_d4f9d9a2-1b42-46cb-8369-f6d4f58f92ff" xlink:to="loc_dei_LegalEntityAxis_22b67935-2c97-4db5-aeef-1c719e11b004" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_22b67935-2c97-4db5-aeef-1c719e11b004_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_22b67935-2c97-4db5-aeef-1c719e11b004" xlink:to="loc_dei_EntityDomain_22b67935-2c97-4db5-aeef-1c719e11b004_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_fc4951e6-26f4-4e55-aafc-e9f758c28c57" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_22b67935-2c97-4db5-aeef-1c719e11b004" xlink:to="loc_dei_EntityDomain_fc4951e6-26f4-4e55-aafc-e9f758c28c57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_a06a010d-4040-40f6-96e1-144652ac2981" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_fc4951e6-26f4-4e55-aafc-e9f758c28c57" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_a06a010d-4040-40f6-96e1-144652ac2981" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_b116a62d-99b2-40bf-9743-89ef6c405f1c" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_fc4951e6-26f4-4e55-aafc-e9f758c28c57" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_b116a62d-99b2-40bf-9743-89ef6c405f1c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCollateralObligationToReturnCash_5786b468-7dc3-4c55-b17c-7f960a6d6bba" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeCollateralObligationToReturnCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_MasterNettingArrangementsNumericLineItems_d432195b-e9b6-49cb-976f-1ddd03a0517e" xlink:to="loc_us-gaap_DerivativeCollateralObligationToReturnCash_5786b468-7dc3-4c55-b17c-7f960a6d6bba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCollateralRightToReclaimCash_07ba0563-bff8-4593-95b5-16f0435333bf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeCollateralRightToReclaimCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_MasterNettingArrangementsNumericLineItems_d432195b-e9b6-49cb-976f-1ddd03a0517e" xlink:to="loc_us-gaap_DerivativeCollateralRightToReclaimCash_07ba0563-bff8-4593-95b5-16f0435333bf" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesRiskDisclosuresDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#DerivativeInstrumentsandHedgingActivitiesRiskDisclosuresDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesRiskDisclosuresDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_InterestRateRiskAndForeignCurrencyRiskLineItems_8ecaf6ff-40cd-4fc0-8822-3af80e211dfb" xlink:href="ppl-20250630.xsd#ppl_InterestRateRiskAndForeignCurrencyRiskLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_InterestRateRiskAndForeignCurrencyRiskTable_e20bfcfc-8433-47aa-93ab-82245a3b128c" xlink:href="ppl-20250630.xsd#ppl_InterestRateRiskAndForeignCurrencyRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskLineItems_8ecaf6ff-40cd-4fc0-8822-3af80e211dfb" xlink:to="loc_ppl_InterestRateRiskAndForeignCurrencyRiskTable_e20bfcfc-8433-47aa-93ab-82245a3b128c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_7d2fccd2-7f5b-442e-942f-25eefc5d5e4d" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskTable_e20bfcfc-8433-47aa-93ab-82245a3b128c" xlink:to="loc_dei_LegalEntityAxis_7d2fccd2-7f5b-442e-942f-25eefc5d5e4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7d2fccd2-7f5b-442e-942f-25eefc5d5e4d_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_7d2fccd2-7f5b-442e-942f-25eefc5d5e4d" xlink:to="loc_dei_EntityDomain_7d2fccd2-7f5b-442e-942f-25eefc5d5e4d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5c5450fc-3bb6-48d3-a8f4-2f87ca2b58e0" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_7d2fccd2-7f5b-442e-942f-25eefc5d5e4d" xlink:to="loc_dei_EntityDomain_5c5450fc-3bb6-48d3-a8f4-2f87ca2b58e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_98e70485-dea1-4a30-a706-b9f5528e0a8e" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5c5450fc-3bb6-48d3-a8f4-2f87ca2b58e0" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_98e70485-dea1-4a30-a706-b9f5528e0a8e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_7b48626a-a6b3-44ee-99b2-0ee59ca7eec8" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_84a6af55-7515-42c0-aaea-2cfdff187f0d" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5c5450fc-3bb6-48d3-a8f4-2f87ca2b58e0" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_84a6af55-7515-42c0-aaea-2cfdff187f0d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_de5e2595-4564-4483-920a-56abcf84dcf7" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5c5450fc-3bb6-48d3-a8f4-2f87ca2b58e0" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_de5e2595-4564-4483-920a-56abcf84dcf7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyAxis_408b3997-5efb-46bc-808b-3d224c53019e" xlink:href="ppl-20250630.xsd#ppl_ByCompanyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskTable_e20bfcfc-8433-47aa-93ab-82245a3b128c" xlink:to="loc_ppl_ByCompanyAxis_408b3997-5efb-46bc-808b-3d224c53019e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_408b3997-5efb-46bc-808b-3d224c53019e_default" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ByCompanyAxis_408b3997-5efb-46bc-808b-3d224c53019e" xlink:to="loc_ppl_ByCompanyDomain_408b3997-5efb-46bc-808b-3d224c53019e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ByCompanyDomain_c46c630f-30db-45ac-a379-fcfbb2994fec" xlink:href="ppl-20250630.xsd#ppl_ByCompanyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ByCompanyAxis_408b3997-5efb-46bc-808b-3d224c53019e" xlink:to="loc_ppl_ByCompanyDomain_c46c630f-30db-45ac-a379-fcfbb2994fec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_131ae958-13f2-4a51-9aee-aee9fa65ac9b" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_c46c630f-30db-45ac-a379-fcfbb2994fec" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_131ae958-13f2-4a51-9aee-aee9fa65ac9b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RhodeIslandEnergyMember_fe21d5ae-0efd-4f01-91de-fb393f93a7e6" xlink:href="ppl-20250630.xsd#ppl_RhodeIslandEnergyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ByCompanyDomain_c46c630f-30db-45ac-a379-fcfbb2994fec" xlink:to="loc_ppl_RhodeIslandEnergyMember_fe21d5ae-0efd-4f01-91de-fb393f93a7e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_07fc1dca-586b-4b6b-b99b-0b929ddb6304" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskTable_e20bfcfc-8433-47aa-93ab-82245a3b128c" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_07fc1dca-586b-4b6b-b99b-0b929ddb6304" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_07fc1dca-586b-4b6b-b99b-0b929ddb6304_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_07fc1dca-586b-4b6b-b99b-0b929ddb6304" xlink:to="loc_us-gaap_HedgingRelationshipDomain_07fc1dca-586b-4b6b-b99b-0b929ddb6304_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_4f427671-747c-40ae-b688-ec93353e1dad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_07fc1dca-586b-4b6b-b99b-0b929ddb6304" xlink:to="loc_us-gaap_HedgingRelationshipDomain_4f427671-747c-40ae-b688-ec93353e1dad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgingMember_9c4d98db-40b9-4ea2-8d02-5856a760ed56" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashFlowHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_4f427671-747c-40ae-b688-ec93353e1dad" xlink:to="loc_us-gaap_CashFlowHedgingMember_9c4d98db-40b9-4ea2-8d02-5856a760ed56" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_ecf68152-b634-492b-aa51-992daf53c596" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_4f427671-747c-40ae-b688-ec93353e1dad" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_ecf68152-b634-492b-aa51-992daf53c596" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EconomicHedgesMember_7d10fa73-f12a-4356-8c1d-bfae5a96bb02" xlink:href="ppl-20250630.xsd#ppl_EconomicHedgesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_4f427671-747c-40ae-b688-ec93353e1dad" xlink:to="loc_ppl_EconomicHedgesMember_7d10fa73-f12a-4356-8c1d-bfae5a96bb02" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_48f5c53c-c22b-4791-ba39-99b551166d5d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskTable_e20bfcfc-8433-47aa-93ab-82245a3b128c" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_48f5c53c-c22b-4791-ba39-99b551166d5d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_48f5c53c-c22b-4791-ba39-99b551166d5d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_48f5c53c-c22b-4791-ba39-99b551166d5d" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_48f5c53c-c22b-4791-ba39-99b551166d5d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_7a904607-1cb1-48fe-a7f7-5ab9990fa35e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_48f5c53c-c22b-4791-ba39-99b551166d5d" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_7a904607-1cb1-48fe-a7f7-5ab9990fa35e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CrossCurrencyInterestRateContractMember_504ddbf6-1026-4d7e-bfe9-c0afc0ba7b7a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CrossCurrencyInterestRateContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7a904607-1cb1-48fe-a7f7-5ab9990fa35e" xlink:to="loc_us-gaap_CrossCurrencyInterestRateContractMember_504ddbf6-1026-4d7e-bfe9-c0afc0ba7b7a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_8fcc8d76-3cc4-470e-8afc-f0156dd78f95" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7a904607-1cb1-48fe-a7f7-5ab9990fa35e" xlink:to="loc_us-gaap_InterestRateSwapMember_8fcc8d76-3cc4-470e-8afc-f0156dd78f95" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_98a85e86-6381-40f2-b61d-5ae2a26cb1cf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7a904607-1cb1-48fe-a7f7-5ab9990fa35e" xlink:to="loc_us-gaap_ForeignExchangeContractMember_98a85e86-6381-40f2-b61d-5ae2a26cb1cf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateContractMember_fe83efb9-84c7-4f58-a0bc-49ac9e2330ae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestRateContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7a904607-1cb1-48fe-a7f7-5ab9990fa35e" xlink:to="loc_us-gaap_InterestRateContractMember_fe83efb9-84c7-4f58-a0bc-49ac9e2330ae" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityOptionMember_56eabc4f-4bab-4de7-b6af-402c2235b805" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommodityOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7a904607-1cb1-48fe-a7f7-5ab9990fa35e" xlink:to="loc_us-gaap_CommodityOptionMember_56eabc4f-4bab-4de7-b6af-402c2235b805" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_9afd1a98-2f87-4607-a001-37d3a8098333" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7a904607-1cb1-48fe-a7f7-5ab9990fa35e" xlink:to="loc_us-gaap_CommodityContractMember_9afd1a98-2f87-4607-a001-37d3a8098333" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeInstrumentAdditionalInformationAxis_7e709a49-eaf7-445b-ae4d-13fe3f9f5d42" xlink:href="ppl-20250630.xsd#ppl_DerivativeInstrumentAdditionalInformationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskTable_e20bfcfc-8433-47aa-93ab-82245a3b128c" xlink:to="loc_ppl_DerivativeInstrumentAdditionalInformationAxis_7e709a49-eaf7-445b-ae4d-13fe3f9f5d42" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeInstrumentAdditionalInformationDomain_7e709a49-eaf7-445b-ae4d-13fe3f9f5d42_default" xlink:href="ppl-20250630.xsd#ppl_DerivativeInstrumentAdditionalInformationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_DerivativeInstrumentAdditionalInformationAxis_7e709a49-eaf7-445b-ae4d-13fe3f9f5d42" xlink:to="loc_ppl_DerivativeInstrumentAdditionalInformationDomain_7e709a49-eaf7-445b-ae4d-13fe3f9f5d42_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeInstrumentAdditionalInformationDomain_cef9dfb4-ddc7-4e1a-a088-4c623c9280ba" xlink:href="ppl-20250630.xsd#ppl_DerivativeInstrumentAdditionalInformationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_DerivativeInstrumentAdditionalInformationAxis_7e709a49-eaf7-445b-ae4d-13fe3f9f5d42" xlink:to="loc_ppl_DerivativeInstrumentAdditionalInformationDomain_cef9dfb4-ddc7-4e1a-a088-4c623c9280ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_942a96ec-e08f-44e1-953c-2e21a5c7e261" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskTable_e20bfcfc-8433-47aa-93ab-82245a3b128c" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_942a96ec-e08f-44e1-953c-2e21a5c7e261" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_942a96ec-e08f-44e1-953c-2e21a5c7e261_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_942a96ec-e08f-44e1-953c-2e21a5c7e261" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_942a96ec-e08f-44e1-953c-2e21a5c7e261_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_904e8e48-1b32-43ec-a089-2e5640d0dea7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_942a96ec-e08f-44e1-953c-2e21a5c7e261" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_904e8e48-1b32-43ec-a089-2e5640d0dea7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PriceRiskManagementAssetsCurrentMember_381ac09d-2b2e-4d2e-8ea0-4fa0586b997b" xlink:href="ppl-20250630.xsd#ppl_PriceRiskManagementAssetsCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_904e8e48-1b32-43ec-a089-2e5640d0dea7" xlink:to="loc_ppl_PriceRiskManagementAssetsCurrentMember_381ac09d-2b2e-4d2e-8ea0-4fa0586b997b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherCurrentLiabilitiesMemberMember_0493da89-0a89-44fb-b7d7-0f197bcf2f99" xlink:href="ppl-20250630.xsd#ppl_OtherCurrentLiabilitiesMemberMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_904e8e48-1b32-43ec-a089-2e5640d0dea7" xlink:to="loc_ppl_OtherCurrentLiabilitiesMemberMember_0493da89-0a89-44fb-b7d7-0f197bcf2f99" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PriceRiskManagementAssetsNoncurrentMember_7aeec9be-94b8-4f9e-a7d4-ade7ca9201a3" xlink:href="ppl-20250630.xsd#ppl_PriceRiskManagementAssetsNoncurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_904e8e48-1b32-43ec-a089-2e5640d0dea7" xlink:to="loc_ppl_PriceRiskManagementAssetsNoncurrentMember_7aeec9be-94b8-4f9e-a7d4-ade7ca9201a3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherDeferredCreditsAndNoncurrentLiabilitiesMember_a38d455e-c403-48c4-b4fc-5726326ded8d" xlink:href="ppl-20250630.xsd#ppl_OtherDeferredCreditsAndNoncurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_904e8e48-1b32-43ec-a089-2e5640d0dea7" xlink:to="loc_ppl_OtherDeferredCreditsAndNoncurrentLiabilitiesMember_a38d455e-c403-48c4-b4fc-5726326ded8d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCurrentAssetsMember_014e5c99-e751-4d3c-b024-3732908a4379" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherCurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_904e8e48-1b32-43ec-a089-2e5640d0dea7" xlink:to="loc_us-gaap_OtherCurrentAssetsMember_014e5c99-e751-4d3c-b024-3732908a4379" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentAssetsMember_82ecfadd-2ef4-4c5c-84a6-c64e2e9240a6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNoncurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_904e8e48-1b32-43ec-a089-2e5640d0dea7" xlink:to="loc_us-gaap_OtherNoncurrentAssetsMember_82ecfadd-2ef4-4c5c-84a6-c64e2e9240a6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCurrentLiabilitiesMember_73a210c1-c192-460d-b10e-1e335fae9b44" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherCurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_904e8e48-1b32-43ec-a089-2e5640d0dea7" xlink:to="loc_us-gaap_OtherCurrentLiabilitiesMember_73a210c1-c192-460d-b10e-1e335fae9b44" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentLiabilitiesMember_cbdfa8c5-0090-4a12-a57a-8ba5a75c65ad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNoncurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_904e8e48-1b32-43ec-a089-2e5640d0dea7" xlink:to="loc_us-gaap_OtherNoncurrentLiabilitiesMember_cbdfa8c5-0090-4a12-a57a-8ba5a75c65ad" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_e851c072-616e-4a7a-b472-a347acfdbeb5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskTable_e20bfcfc-8433-47aa-93ab-82245a3b128c" xlink:to="loc_us-gaap_HedgingDesignationAxis_e851c072-616e-4a7a-b472-a347acfdbeb5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_e851c072-616e-4a7a-b472-a347acfdbeb5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_e851c072-616e-4a7a-b472-a347acfdbeb5" xlink:to="loc_us-gaap_HedgingDesignationDomain_e851c072-616e-4a7a-b472-a347acfdbeb5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_98179337-727d-4a93-b755-09dbe475c946" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_e851c072-616e-4a7a-b472-a347acfdbeb5" xlink:to="loc_us-gaap_HedgingDesignationDomain_98179337-727d-4a93-b755-09dbe475c946" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_6c14ae06-1be0-49a1-9d48-8b3752292f35" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_98179337-727d-4a93-b755-09dbe475c946" xlink:to="loc_us-gaap_NondesignatedMember_6c14ae06-1be0-49a1-9d48-8b3752292f35" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_InterestRateRiskCashFlowHedgesNumericAbstract_1d7d9a91-094c-43bd-b921-f8e3a716e7ab" xlink:href="ppl-20250630.xsd#ppl_InterestRateRiskCashFlowHedgesNumericAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskLineItems_8ecaf6ff-40cd-4fc0-8822-3af80e211dfb" xlink:to="loc_ppl_InterestRateRiskCashFlowHedgesNumericAbstract_1d7d9a91-094c-43bd-b921-f8e3a716e7ab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_a3a4bcc1-d469-4b67-be23-50c92fa64eec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_InterestRateRiskCashFlowHedgesNumericAbstract_1d7d9a91-094c-43bd-b921-f8e3a716e7ab" xlink:to="loc_us-gaap_DerivativeNotionalAmount_a3a4bcc1-d469-4b67-be23-50c92fa64eec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SummaryOfNetInvestmentHedgeActivityAbstract_eb52c359-527d-41c0-b18b-3239e626c44e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SummaryOfNetInvestmentHedgeActivityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskLineItems_8ecaf6ff-40cd-4fc0-8822-3af80e211dfb" xlink:to="loc_us-gaap_SummaryOfNetInvestmentHedgeActivityAbstract_eb52c359-527d-41c0-b18b-3239e626c44e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseNetOfTax_2d257ecf-db67-4d10-ae3b-90ba32914cfb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SummaryOfNetInvestmentHedgeActivityAbstract_eb52c359-527d-41c0-b18b-3239e626c44e" xlink:to="loc_us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseNetOfTax_2d257ecf-db67-4d10-ae3b-90ba32914cfb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAbstract_422bd344-f5e6-4a01-9b5f-4c938e92c9e4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskLineItems_8ecaf6ff-40cd-4fc0-8822-3af80e211dfb" xlink:to="loc_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAbstract_422bd344-f5e6-4a01-9b5f-4c938e92c9e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_TotalExposureHedgedForeignCurrencyContractsClassifiedAsEconomicActivity_57f4e78e-9e66-4f47-8274-f466ecf13b20" xlink:href="ppl-20250630.xsd#ppl_TotalExposureHedgedForeignCurrencyContractsClassifiedAsEconomicActivity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAbstract_422bd344-f5e6-4a01-9b5f-4c938e92c9e4" xlink:to="loc_ppl_TotalExposureHedgedForeignCurrencyContractsClassifiedAsEconomicActivity_57f4e78e-9e66-4f47-8274-f466ecf13b20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeNotionalAmountMatured_e866ea75-60bf-4042-9696-5943941957a7" xlink:href="ppl-20250630.xsd#ppl_DerivativeNotionalAmountMatured"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskLineItems_8ecaf6ff-40cd-4fc0-8822-3af80e211dfb" xlink:to="loc_ppl_DerivativeNotionalAmountMatured_e866ea75-60bf-4042-9696-5943941957a7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_78a555e3-63f9-48d1-bdea-2fa90d0597c9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskLineItems_8ecaf6ff-40cd-4fc0-8822-3af80e211dfb" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_78a555e3-63f9-48d1-bdea-2fa90d0597c9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCollateralObligationToReturnCash_4d8954c1-2c06-4bc0-83ec-313877079e1a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeCollateralObligationToReturnCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskLineItems_8ecaf6ff-40cd-4fc0-8822-3af80e211dfb" xlink:to="loc_us-gaap_DerivativeCollateralObligationToReturnCash_4d8954c1-2c06-4bc0-83ec-313877079e1a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_24bf4841-683e-4d4a-ab68-52ca574db5a1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskLineItems_8ecaf6ff-40cd-4fc0-8822-3af80e211dfb" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_24bf4841-683e-4d4a-ab68-52ca574db5a1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_61ba8c7f-e561-4e15-a93f-68d0ea35bd21" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskLineItems_8ecaf6ff-40cd-4fc0-8822-3af80e211dfb" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_61ba8c7f-e561-4e15-a93f-68d0ea35bd21" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCollateralRightToReclaimCash_cbb57793-c871-49b2-8e5e-82cb28b1aebe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeCollateralRightToReclaimCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskLineItems_8ecaf6ff-40cd-4fc0-8822-3af80e211dfb" xlink:to="loc_us-gaap_DerivativeCollateralRightToReclaimCash_cbb57793-c871-49b2-8e5e-82cb28b1aebe" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNonmonetaryNotionalAmountVolume_7c2cebbb-d3c2-4f79-80e3-572c0df779dc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeNonmonetaryNotionalAmountVolume"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskLineItems_8ecaf6ff-40cd-4fc0-8822-3af80e211dfb" xlink:to="loc_us-gaap_DerivativeNonmonetaryNotionalAmountVolume_7c2cebbb-d3c2-4f79-80e3-572c0df779dc" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet_c7bb3975-ea62-49c0-b7e7-3d45a0c6b9fd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_InterestRateRiskAndForeignCurrencyRiskLineItems_8ecaf6ff-40cd-4fc0-8822-3af80e211dfb" xlink:to="loc_us-gaap_GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet_c7bb3975-ea62-49c0-b7e7-3d45a0c6b9fd" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesFairValuesDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#DerivativeInstrumentsandHedgingActivitiesFairValuesDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesFairValuesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_6be08cd6-47f3-4c73-bba8-43fb3ae33ed5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_1578535c-2749-4b0e-b2d0-a5b316ab38cf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_6be08cd6-47f3-4c73-bba8-43fb3ae33ed5" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_1578535c-2749-4b0e-b2d0-a5b316ab38cf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f681ebe7-0acc-41bc-8c74-ddd4f61a0f86" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_1578535c-2749-4b0e-b2d0-a5b316ab38cf" xlink:to="loc_dei_LegalEntityAxis_f681ebe7-0acc-41bc-8c74-ddd4f61a0f86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f681ebe7-0acc-41bc-8c74-ddd4f61a0f86_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f681ebe7-0acc-41bc-8c74-ddd4f61a0f86" xlink:to="loc_dei_EntityDomain_f681ebe7-0acc-41bc-8c74-ddd4f61a0f86_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_39186969-9ce1-4a15-90ad-f5191465c8ab" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f681ebe7-0acc-41bc-8c74-ddd4f61a0f86" xlink:to="loc_dei_EntityDomain_39186969-9ce1-4a15-90ad-f5191465c8ab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_1f97c5ea-9226-463c-b631-8ec570e9b28f" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_39186969-9ce1-4a15-90ad-f5191465c8ab" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_1f97c5ea-9226-463c-b631-8ec570e9b28f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_e8b6de36-a420-4c3e-91e6-59dde1d811e0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_1578535c-2749-4b0e-b2d0-a5b316ab38cf" xlink:to="loc_us-gaap_HedgingDesignationAxis_e8b6de36-a420-4c3e-91e6-59dde1d811e0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_e8b6de36-a420-4c3e-91e6-59dde1d811e0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_e8b6de36-a420-4c3e-91e6-59dde1d811e0" xlink:to="loc_us-gaap_HedgingDesignationDomain_e8b6de36-a420-4c3e-91e6-59dde1d811e0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_73065747-314e-4847-9896-ab6feafa6d3b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_e8b6de36-a420-4c3e-91e6-59dde1d811e0" xlink:to="loc_us-gaap_HedgingDesignationDomain_73065747-314e-4847-9896-ab6feafa6d3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_91c01288-c448-4a0f-823c-ffc89cee1007" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_73065747-314e-4847-9896-ab6feafa6d3b" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_91c01288-c448-4a0f-823c-ffc89cee1007" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_0dd1bcc3-483d-4e00-a049-9aa92ba143b9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_73065747-314e-4847-9896-ab6feafa6d3b" xlink:to="loc_us-gaap_NondesignatedMember_0dd1bcc3-483d-4e00-a049-9aa92ba143b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_24bb529c-f2a0-4c5f-b53a-30b27699e94c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_1578535c-2749-4b0e-b2d0-a5b316ab38cf" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_24bb529c-f2a0-4c5f-b53a-30b27699e94c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_24bb529c-f2a0-4c5f-b53a-30b27699e94c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_24bb529c-f2a0-4c5f-b53a-30b27699e94c" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_24bb529c-f2a0-4c5f-b53a-30b27699e94c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_dcb69293-9e00-455b-870f-799dc0870df8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_24bb529c-f2a0-4c5f-b53a-30b27699e94c" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_dcb69293-9e00-455b-870f-799dc0870df8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CurrentAssetsMember_4bfbd38f-2545-4b93-a2b2-8b038424eb81" xlink:href="ppl-20250630.xsd#ppl_CurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_dcb69293-9e00-455b-870f-799dc0870df8" xlink:to="loc_ppl_CurrentAssetsMember_4bfbd38f-2545-4b93-a2b2-8b038424eb81" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherCurrentLiabilitiesMemberMember_31d83619-ad07-4e4c-a38b-ba5fc4b3d5ce" xlink:href="ppl-20250630.xsd#ppl_OtherCurrentLiabilitiesMemberMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_dcb69293-9e00-455b-870f-799dc0870df8" xlink:to="loc_ppl_OtherCurrentLiabilitiesMemberMember_31d83619-ad07-4e4c-a38b-ba5fc4b3d5ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CurrentAssetsHeldForSaleViaCurrentAssetsMember_a1f2e34e-6464-47b4-ab4c-d8b3f93f8ef7" xlink:href="ppl-20250630.xsd#ppl_CurrentAssetsHeldForSaleViaCurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_dcb69293-9e00-455b-870f-799dc0870df8" xlink:to="loc_ppl_CurrentAssetsHeldForSaleViaCurrentAssetsMember_a1f2e34e-6464-47b4-ab4c-d8b3f93f8ef7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NoncurrentAssetsMember_34a6ece2-1bd5-4e61-8e60-94fb30bc7113" xlink:href="ppl-20250630.xsd#ppl_NoncurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_dcb69293-9e00-455b-870f-799dc0870df8" xlink:to="loc_ppl_NoncurrentAssetsMember_34a6ece2-1bd5-4e61-8e60-94fb30bc7113" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PriceRiskManagementAssetsNoncurrentMember_9226592f-e0f1-480a-ae48-1bcb3c736c94" xlink:href="ppl-20250630.xsd#ppl_PriceRiskManagementAssetsNoncurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_dcb69293-9e00-455b-870f-799dc0870df8" xlink:to="loc_ppl_PriceRiskManagementAssetsNoncurrentMember_9226592f-e0f1-480a-ae48-1bcb3c736c94" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherDeferredCreditsAndNoncurrentLiabilitiesMember_e9d86ee6-f327-44c6-84a4-67964e1231e0" xlink:href="ppl-20250630.xsd#ppl_OtherDeferredCreditsAndNoncurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_dcb69293-9e00-455b-870f-799dc0870df8" xlink:to="loc_ppl_OtherDeferredCreditsAndNoncurrentLiabilitiesMember_e9d86ee6-f327-44c6-84a4-67964e1231e0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CurrentLiabilitiesHeldForSaleViaCurrentLiabilitiesMember_0dd7da72-22bd-4125-aeff-20fa31396ff4" xlink:href="ppl-20250630.xsd#ppl_CurrentLiabilitiesHeldForSaleViaCurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_dcb69293-9e00-455b-870f-799dc0870df8" xlink:to="loc_ppl_CurrentLiabilitiesHeldForSaleViaCurrentLiabilitiesMember_0dd7da72-22bd-4125-aeff-20fa31396ff4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CurrentLiabilitiesMember_df0190eb-de6a-41ae-9d3a-de2e73b9d5cd" xlink:href="ppl-20250630.xsd#ppl_CurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_dcb69293-9e00-455b-870f-799dc0870df8" xlink:to="loc_ppl_CurrentLiabilitiesMember_df0190eb-de6a-41ae-9d3a-de2e73b9d5cd" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PriceRiskManagementAssetsCurrentMember_e451caff-62dd-4dc9-b12d-5e775f479295" xlink:href="ppl-20250630.xsd#ppl_PriceRiskManagementAssetsCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_dcb69293-9e00-455b-870f-799dc0870df8" xlink:to="loc_ppl_PriceRiskManagementAssetsCurrentMember_e451caff-62dd-4dc9-b12d-5e775f479295" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NoncurrentLiabilitiesMember_4b6e5823-59fd-41f6-a6a4-a82a0d13982f" xlink:href="ppl-20250630.xsd#ppl_NoncurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_dcb69293-9e00-455b-870f-799dc0870df8" xlink:to="loc_ppl_NoncurrentLiabilitiesMember_4b6e5823-59fd-41f6-a6a4-a82a0d13982f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CurrentAssetsHeldForSaleViaNoncurrentAssetsMember_07954a3a-dc17-491b-a509-f4893c135e84" xlink:href="ppl-20250630.xsd#ppl_CurrentAssetsHeldForSaleViaNoncurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_dcb69293-9e00-455b-870f-799dc0870df8" xlink:to="loc_ppl_CurrentAssetsHeldForSaleViaNoncurrentAssetsMember_07954a3a-dc17-491b-a509-f4893c135e84" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CurrentLiabilitiesHeldForSaleViaNoncurrentLiabilitiesMember_2f736043-31d6-4321-9b47-a2dc501fe51f" xlink:href="ppl-20250630.xsd#ppl_CurrentLiabilitiesHeldForSaleViaNoncurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_dcb69293-9e00-455b-870f-799dc0870df8" xlink:to="loc_ppl_CurrentLiabilitiesHeldForSaleViaNoncurrentLiabilitiesMember_2f736043-31d6-4321-9b47-a2dc501fe51f" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_88acbb1d-447c-4c17-893d-2ec45f6b5639" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_1578535c-2749-4b0e-b2d0-a5b316ab38cf" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_88acbb1d-447c-4c17-893d-2ec45f6b5639" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_88acbb1d-447c-4c17-893d-2ec45f6b5639_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_88acbb1d-447c-4c17-893d-2ec45f6b5639" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_88acbb1d-447c-4c17-893d-2ec45f6b5639_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_3f8ba8f5-7232-4afd-93ea-720164694120" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_88acbb1d-447c-4c17-893d-2ec45f6b5639" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_3f8ba8f5-7232-4afd-93ea-720164694120" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_7054a9f0-fdde-41fc-a577-094c00bdeeb6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_3f8ba8f5-7232-4afd-93ea-720164694120" xlink:to="loc_us-gaap_InterestRateSwapMember_7054a9f0-fdde-41fc-a577-094c00bdeeb6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CrossCurrencyInterestRateContractMember_012d4a64-0c81-44cb-890e-767373f76604" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CrossCurrencyInterestRateContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_3f8ba8f5-7232-4afd-93ea-720164694120" xlink:to="loc_us-gaap_CrossCurrencyInterestRateContractMember_012d4a64-0c81-44cb-890e-767373f76604" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_b4c9259c-9c48-4350-b132-1ad15944c43c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_3f8ba8f5-7232-4afd-93ea-720164694120" xlink:to="loc_us-gaap_ForeignExchangeContractMember_b4c9259c-9c48-4350-b132-1ad15944c43c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_FairValuesByBalanceSheetLocationAbstract_ca2ed1a8-5081-41f0-91e3-3606c8a9357e" xlink:href="ppl-20250630.xsd#ppl_FairValuesByBalanceSheetLocationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_6be08cd6-47f3-4c73-bba8-43fb3ae33ed5" xlink:to="loc_ppl_FairValuesByBalanceSheetLocationAbstract_ca2ed1a8-5081-41f0-91e3-3606c8a9357e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeFairValueOfDerivativeAssetheldforsale_b1386e8b-8dd8-4906-87f9-477ad11c957c" xlink:href="ppl-20250630.xsd#ppl_DerivativeFairValueOfDerivativeAssetheldforsale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FairValuesByBalanceSheetLocationAbstract_ca2ed1a8-5081-41f0-91e3-3606c8a9357e" xlink:to="loc_ppl_DerivativeFairValueOfDerivativeAssetheldforsale_b1386e8b-8dd8-4906-87f9-477ad11c957c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeFairValueOfDerivativeLiabilityheldforsale_9212b90f-5b59-4092-8066-af0a01481d45" xlink:href="ppl-20250630.xsd#ppl_DerivativeFairValueOfDerivativeLiabilityheldforsale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FairValuesByBalanceSheetLocationAbstract_ca2ed1a8-5081-41f0-91e3-3606c8a9357e" xlink:to="loc_ppl_DerivativeFairValueOfDerivativeLiabilityheldforsale_9212b90f-5b59-4092-8066-af0a01481d45" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_f2c7f1a1-9b94-476a-97f5-3059ab859f2c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FairValuesByBalanceSheetLocationAbstract_ca2ed1a8-5081-41f0-91e3-3606c8a9357e" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_f2c7f1a1-9b94-476a-97f5-3059ab859f2c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_9c9bfd76-bb6b-4da7-8235-5f17d7081db1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_FairValuesByBalanceSheetLocationAbstract_ca2ed1a8-5081-41f0-91e3-3606c8a9357e" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_9c9bfd76-bb6b-4da7-8235-5f17d7081db1" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesGainsandLossesDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#DerivativeInstrumentsandHedgingActivitiesGainsandLossesDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesGainsandLossesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_6aa4bace-4f62-408b-965a-c306faf829fb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_cb69c010-ba77-4c69-a7b8-eb34c1dde891" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_6aa4bace-4f62-408b-965a-c306faf829fb" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_cb69c010-ba77-4c69-a7b8-eb34c1dde891" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_5e37638b-f7b6-4927-90de-8ec50b3c15e7" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_cb69c010-ba77-4c69-a7b8-eb34c1dde891" xlink:to="loc_dei_LegalEntityAxis_5e37638b-f7b6-4927-90de-8ec50b3c15e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5e37638b-f7b6-4927-90de-8ec50b3c15e7_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_5e37638b-f7b6-4927-90de-8ec50b3c15e7" xlink:to="loc_dei_EntityDomain_5e37638b-f7b6-4927-90de-8ec50b3c15e7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a68d5e23-b536-4263-b5a4-6eede83edec9" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_5e37638b-f7b6-4927-90de-8ec50b3c15e7" xlink:to="loc_dei_EntityDomain_a68d5e23-b536-4263-b5a4-6eede83edec9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_1e0c0733-89a8-409c-9277-51d4f8e1dafc" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a68d5e23-b536-4263-b5a4-6eede83edec9" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_1e0c0733-89a8-409c-9277-51d4f8e1dafc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_93217dfb-07ba-45ea-b843-1c56cc533c3a" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a68d5e23-b536-4263-b5a4-6eede83edec9" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_93217dfb-07ba-45ea-b843-1c56cc533c3a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_f174a8a7-7251-409e-a5d7-09aadbfea48d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_cb69c010-ba77-4c69-a7b8-eb34c1dde891" xlink:to="loc_us-gaap_HedgingDesignationAxis_f174a8a7-7251-409e-a5d7-09aadbfea48d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_f174a8a7-7251-409e-a5d7-09aadbfea48d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_f174a8a7-7251-409e-a5d7-09aadbfea48d" xlink:to="loc_us-gaap_HedgingDesignationDomain_f174a8a7-7251-409e-a5d7-09aadbfea48d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_dd9ec554-b4d4-4b8a-8450-ab7550d114dc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_f174a8a7-7251-409e-a5d7-09aadbfea48d" xlink:to="loc_us-gaap_HedgingDesignationDomain_dd9ec554-b4d4-4b8a-8450-ab7550d114dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_d84fb4fb-100c-4ae6-93cb-929b14d47d65" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_dd9ec554-b4d4-4b8a-8450-ab7550d114dc" xlink:to="loc_us-gaap_NondesignatedMember_d84fb4fb-100c-4ae6-93cb-929b14d47d65" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_0624c424-67fe-40ad-ab97-adb9f6864c6b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_dd9ec554-b4d4-4b8a-8450-ab7550d114dc" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_0624c424-67fe-40ad-ab97-adb9f6864c6b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_d3bb654d-1b1c-485e-aea0-359f66ace500" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_cb69c010-ba77-4c69-a7b8-eb34c1dde891" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_d3bb654d-1b1c-485e-aea0-359f66ace500" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_d3bb654d-1b1c-485e-aea0-359f66ace500_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_d3bb654d-1b1c-485e-aea0-359f66ace500" xlink:to="loc_us-gaap_HedgingRelationshipDomain_d3bb654d-1b1c-485e-aea0-359f66ace500_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_2e80aa83-e205-43c8-8430-007e89b746f9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_d3bb654d-1b1c-485e-aea0-359f66ace500" xlink:to="loc_us-gaap_HedgingRelationshipDomain_2e80aa83-e205-43c8-8430-007e89b746f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgingMember_ebb99664-b26b-419f-a32d-19c4028361ff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashFlowHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_2e80aa83-e205-43c8-8430-007e89b746f9" xlink:to="loc_us-gaap_CashFlowHedgingMember_ebb99664-b26b-419f-a32d-19c4028361ff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_159dc59a-6bf9-44d2-993c-b920f7557f3d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_2e80aa83-e205-43c8-8430-007e89b746f9" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_159dc59a-6bf9-44d2-993c-b920f7557f3d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_a17b8f2f-f5f5-466f-953a-3ebe6f2131b8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_cb69c010-ba77-4c69-a7b8-eb34c1dde891" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_a17b8f2f-f5f5-466f-953a-3ebe6f2131b8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_a17b8f2f-f5f5-466f-953a-3ebe6f2131b8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_a17b8f2f-f5f5-466f-953a-3ebe6f2131b8" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_a17b8f2f-f5f5-466f-953a-3ebe6f2131b8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_99d0e874-d229-46a7-8b8f-5f6a68bfe5ba" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_a17b8f2f-f5f5-466f-953a-3ebe6f2131b8" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_99d0e874-d229-46a7-8b8f-5f6a68bfe5ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_0ea2d99e-e58d-4f4f-b431-885e91565db3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_99d0e874-d229-46a7-8b8f-5f6a68bfe5ba" xlink:to="loc_us-gaap_InterestRateSwapMember_0ea2d99e-e58d-4f4f-b431-885e91565db3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_8ffcbf4f-b3f3-441f-9792-b536d213f12b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_99d0e874-d229-46a7-8b8f-5f6a68bfe5ba" xlink:to="loc_us-gaap_ForeignExchangeContractMember_8ffcbf4f-b3f3-441f-9792-b536d213f12b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CrossCurrencyInterestRateContractMember_7f249ae4-82d9-4eb1-b4af-92ea2750fe3b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CrossCurrencyInterestRateContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_99d0e874-d229-46a7-8b8f-5f6a68bfe5ba" xlink:to="loc_us-gaap_CrossCurrencyInterestRateContractMember_7f249ae4-82d9-4eb1-b4af-92ea2750fe3b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityOptionMember_05a391da-c3cb-4755-b1d0-c8ae3b8cd3bb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommodityOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_99d0e874-d229-46a7-8b8f-5f6a68bfe5ba" xlink:to="loc_us-gaap_CommodityOptionMember_05a391da-c3cb-4755-b1d0-c8ae3b8cd3bb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_e9a6d85d-0ebd-4d96-86b4-3d7fe58b8bf8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_99d0e874-d229-46a7-8b8f-5f6a68bfe5ba" xlink:to="loc_us-gaap_CommodityContractMember_e9a6d85d-0ebd-4d96-86b4-3d7fe58b8bf8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_b8f3d1e2-bd31-4cbf-b354-8a748e7881ac" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_cb69c010-ba77-4c69-a7b8-eb34c1dde891" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_b8f3d1e2-bd31-4cbf-b354-8a748e7881ac" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_b8f3d1e2-bd31-4cbf-b354-8a748e7881ac_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_b8f3d1e2-bd31-4cbf-b354-8a748e7881ac" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_b8f3d1e2-bd31-4cbf-b354-8a748e7881ac_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_b78ad3a4-d9b0-4b8a-abc1-26631f2c3e34" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_b8f3d1e2-bd31-4cbf-b354-8a748e7881ac" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_b78ad3a4-d9b0-4b8a-abc1-26631f2c3e34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseMember_645c54ee-233c-4d33-b534-aa8c5a903edc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_b78ad3a4-d9b0-4b8a-abc1-26631f2c3e34" xlink:to="loc_us-gaap_InterestExpenseMember_645c54ee-233c-4d33-b534-aa8c5a903edc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DiscontinuedOperationsNetOfIncomeTaxesMember_99be67db-6bb8-47a8-9a35-5c04ef0d90e2" xlink:href="ppl-20250630.xsd#ppl_DiscontinuedOperationsNetOfIncomeTaxesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_b78ad3a4-d9b0-4b8a-abc1-26631f2c3e34" xlink:to="loc_ppl_DiscontinuedOperationsNetOfIncomeTaxesMember_99be67db-6bb8-47a8-9a35-5c04ef0d90e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherIncomeExpenseNetMember_62674931-52ff-4bcd-b6e7-fa82ce8eebdc" xlink:href="ppl-20250630.xsd#ppl_OtherIncomeExpenseNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_b78ad3a4-d9b0-4b8a-abc1-26631f2c3e34" xlink:to="loc_ppl_OtherIncomeExpenseNetMember_62674931-52ff-4bcd-b6e7-fa82ce8eebdc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpenseMember_ab8fe62b-eaa6-4d6b-b8be-8171bf403130" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_b78ad3a4-d9b0-4b8a-abc1-26631f2c3e34" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpenseMember_ab8fe62b-eaa6-4d6b-b8be-8171bf403130" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_EnergyPurchasesMember_47ffec40-7c7e-434c-b6bd-c5c9d2aef0b6" xlink:href="ppl-20250630.xsd#ppl_EnergyPurchasesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_b78ad3a4-d9b0-4b8a-abc1-26631f2c3e34" xlink:to="loc_ppl_EnergyPurchasesMember_47ffec40-7c7e-434c-b6bd-c5c9d2aef0b6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PurchasedPowerAndGasMember_8e39ac23-37ce-4e04-9360-2be5777e68f1" xlink:href="ppl-20250630.xsd#ppl_PurchasedPowerAndGasMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_b78ad3a4-d9b0-4b8a-abc1-26631f2c3e34" xlink:to="loc_ppl_PurchasedPowerAndGasMember_8e39ac23-37ce-4e04-9360-2be5777e68f1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLocationAxis_eb03c2fc-5d80-481d-ab35-8824461be1a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_cb69c010-ba77-4c69-a7b8-eb34c1dde891" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLocationAxis_eb03c2fc-5d80-481d-ab35-8824461be1a2" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLocationDomain_eb03c2fc-5d80-481d-ab35-8824461be1a2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLocationAxis_eb03c2fc-5d80-481d-ab35-8824461be1a2" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLocationDomain_eb03c2fc-5d80-481d-ab35-8824461be1a2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLocationDomain_e2ebae22-b3bd-41f7-9261-4f452f5c36f9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLocationAxis_eb03c2fc-5d80-481d-ab35-8824461be1a2" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLocationDomain_e2ebae22-b3bd-41f7-9261-4f452f5c36f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeMember_cb8baa6c-ec2a-4a72-84e6-8c37d04ec034" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLocationDomain_e2ebae22-b3bd-41f7-9261-4f452f5c36f9" xlink:to="loc_us-gaap_OtherComprehensiveIncomeMember_cb8baa6c-ec2a-4a72-84e6-8c37d04ec034" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DiscontinuedOperationsNetOfIncomeTaxesMember_42458035-7c85-4829-8f7d-97be4c92e192" xlink:href="ppl-20250630.xsd#ppl_DiscontinuedOperationsNetOfIncomeTaxesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLocationDomain_e2ebae22-b3bd-41f7-9261-4f452f5c36f9" xlink:to="loc_ppl_DiscontinuedOperationsNetOfIncomeTaxesMember_42458035-7c85-4829-8f7d-97be4c92e192" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeInstrumentsGainLossByBalanceSheetLocationAxis_d86349c5-689a-4483-97d1-dfc253751f34" xlink:href="ppl-20250630.xsd#ppl_DerivativeInstrumentsGainLossByBalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_cb69c010-ba77-4c69-a7b8-eb34c1dde891" xlink:to="loc_ppl_DerivativeInstrumentsGainLossByBalanceSheetLocationAxis_d86349c5-689a-4483-97d1-dfc253751f34" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeBalanceSheetLocationDomain_d86349c5-689a-4483-97d1-dfc253751f34_default" xlink:href="ppl-20250630.xsd#ppl_DerivativeBalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_DerivativeInstrumentsGainLossByBalanceSheetLocationAxis_d86349c5-689a-4483-97d1-dfc253751f34" xlink:to="loc_ppl_DerivativeBalanceSheetLocationDomain_d86349c5-689a-4483-97d1-dfc253751f34_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeBalanceSheetLocationDomain_ea0cfcc5-eadc-43a6-8a21-3c383bab4f57" xlink:href="ppl-20250630.xsd#ppl_DerivativeBalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_DerivativeInstrumentsGainLossByBalanceSheetLocationAxis_d86349c5-689a-4483-97d1-dfc253751f34" xlink:to="loc_ppl_DerivativeBalanceSheetLocationDomain_ea0cfcc5-eadc-43a6-8a21-3c383bab4f57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatoryAssetsNoncurrentMember_a6f1aa59-a9e8-4c63-9158-984c85833be8" xlink:href="ppl-20250630.xsd#ppl_RegulatoryAssetsNoncurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DerivativeBalanceSheetLocationDomain_ea0cfcc5-eadc-43a6-8a21-3c383bab4f57" xlink:to="loc_ppl_RegulatoryAssetsNoncurrentMember_a6f1aa59-a9e8-4c63-9158-984c85833be8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeInstrumentsGainLossByBalanceSheetLocationDomain_f23d5419-7517-42b7-8361-faeaafd84978" xlink:href="ppl-20250630.xsd#ppl_DerivativeInstrumentsGainLossByBalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_DerivativeInstrumentsGainLossByBalanceSheetLocationAxis_d86349c5-689a-4483-97d1-dfc253751f34" xlink:to="loc_ppl_DerivativeInstrumentsGainLossByBalanceSheetLocationDomain_f23d5419-7517-42b7-8361-faeaafd84978" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_RegulatoryAssetsCurrentMember_614c6b16-dd3e-40b5-9462-1e441faaa9ff" xlink:href="ppl-20250630.xsd#ppl_RegulatoryAssetsCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DerivativeInstrumentsGainLossByBalanceSheetLocationDomain_f23d5419-7517-42b7-8361-faeaafd84978" xlink:to="loc_ppl_RegulatoryAssetsCurrentMember_614c6b16-dd3e-40b5-9462-1e441faaa9ff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_78e9277e-4ffd-4f1e-8b20-ae8d856cbfe5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_cb69c010-ba77-4c69-a7b8-eb34c1dde891" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_78e9277e-4ffd-4f1e-8b20-ae8d856cbfe5" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_78e9277e-4ffd-4f1e-8b20-ae8d856cbfe5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_78e9277e-4ffd-4f1e-8b20-ae8d856cbfe5" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_78e9277e-4ffd-4f1e-8b20-ae8d856cbfe5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_5c8da705-c467-4db5-bc6e-3d6f8461c8d7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_78e9277e-4ffd-4f1e-8b20-ae8d856cbfe5" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_5c8da705-c467-4db5-bc6e-3d6f8461c8d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NoncurrentAssetsMember_3407ab60-6139-4664-b668-b9bf51443d66" xlink:href="ppl-20250630.xsd#ppl_NoncurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_5c8da705-c467-4db5-bc6e-3d6f8461c8d7" xlink:to="loc_ppl_NoncurrentAssetsMember_3407ab60-6139-4664-b668-b9bf51443d66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CurrentLiabilitiesMember_5accdba4-2f9e-49bd-ac02-2a4f7075d699" xlink:href="ppl-20250630.xsd#ppl_CurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_5c8da705-c467-4db5-bc6e-3d6f8461c8d7" xlink:to="loc_ppl_CurrentLiabilitiesMember_5accdba4-2f9e-49bd-ac02-2a4f7075d699" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CurrentAssetsMember_31289870-71f5-42c7-b3cf-9420fecd7668" xlink:href="ppl-20250630.xsd#ppl_CurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_5c8da705-c467-4db5-bc6e-3d6f8461c8d7" xlink:to="loc_ppl_CurrentAssetsMember_31289870-71f5-42c7-b3cf-9420fecd7668" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NoncurrentLiabilitiesMember_3e2c1d36-89f1-4da5-931b-a4346ad32e9c" xlink:href="ppl-20250630.xsd#ppl_NoncurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_5c8da705-c467-4db5-bc6e-3d6f8461c8d7" xlink:to="loc_ppl_NoncurrentLiabilitiesMember_3e2c1d36-89f1-4da5-931b-a4346ad32e9c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentAssetsMember_c000bb29-d6af-4f26-bc0b-e86760e94c09" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNoncurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_5c8da705-c467-4db5-bc6e-3d6f8461c8d7" xlink:to="loc_us-gaap_OtherNoncurrentAssetsMember_c000bb29-d6af-4f26-bc0b-e86760e94c09" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PriceRiskManagementLiabilitiesCurrentMember_3a747497-c4a8-4cc0-ae89-29d7b5f43345" xlink:href="ppl-20250630.xsd#ppl_PriceRiskManagementLiabilitiesCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_5c8da705-c467-4db5-bc6e-3d6f8461c8d7" xlink:to="loc_ppl_PriceRiskManagementLiabilitiesCurrentMember_3a747497-c4a8-4cc0-ae89-29d7b5f43345" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PriceRiskManagementLiabilitiesNoncurrentMember_c102e248-4e06-42c9-b3c5-853e1697e488" xlink:href="ppl-20250630.xsd#ppl_PriceRiskManagementLiabilitiesNoncurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_5c8da705-c467-4db5-bc6e-3d6f8461c8d7" xlink:to="loc_ppl_PriceRiskManagementLiabilitiesNoncurrentMember_c102e248-4e06-42c9-b3c5-853e1697e488" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_3e4b784a-c7be-45d3-bfb2-145c149f7ac1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_6aa4bace-4f62-408b-965a-c306faf829fb" xlink:to="loc_us-gaap_InterestExpense_3e4b784a-c7be-45d3-bfb2-145c149f7ac1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AmountsIncludedInIncomeStatementOrOtherComprehensiveIncomeAbstract_e89ab123-b7dc-4385-a8b6-cf19585b14a8" xlink:href="ppl-20250630.xsd#ppl_AmountsIncludedInIncomeStatementOrOtherComprehensiveIncomeAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_6aa4bace-4f62-408b-965a-c306faf829fb" xlink:to="loc_ppl_AmountsIncludedInIncomeStatementOrOtherComprehensiveIncomeAbstract_e89ab123-b7dc-4385-a8b6-cf19585b14a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherComprehensiveIncomeLossUnrealizedGainLossOnDerivativesArisingDuringPeriodPreTax_b3d5b167-051e-4437-99e1-583f99eba8ee" xlink:href="ppl-20250630.xsd#ppl_OtherComprehensiveIncomeLossUnrealizedGainLossOnDerivativesArisingDuringPeriodPreTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AmountsIncludedInIncomeStatementOrOtherComprehensiveIncomeAbstract_e89ab123-b7dc-4385-a8b6-cf19585b14a8" xlink:to="loc_ppl_OtherComprehensiveIncomeLossUnrealizedGainLossOnDerivativesArisingDuringPeriodPreTax_b3d5b167-051e-4437-99e1-583f99eba8ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeBeforeTax_456ed5c3-4226-4bb2-bce6-5db46957ff8c" xlink:href="ppl-20250630.xsd#ppl_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AmountsIncludedInIncomeStatementOrOtherComprehensiveIncomeAbstract_e89ab123-b7dc-4385-a8b6-cf19585b14a8" xlink:to="loc_ppl_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeBeforeTax_456ed5c3-4226-4bb2-bce6-5db46957ff8c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_b3ed904f-b5cd-4062-beb6-6c14ce4b8664" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AmountsIncludedInIncomeStatementOrOtherComprehensiveIncomeAbstract_e89ab123-b7dc-4385-a8b6-cf19585b14a8" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_b3ed904f-b5cd-4062-beb6-6c14ce4b8664" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_2b887e21-c67a-44b6-8335-97abcb64a0e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AmountsIncludedInIncomeStatementOrOtherComprehensiveIncomeAbstract_e89ab123-b7dc-4385-a8b6-cf19585b14a8" xlink:to="loc_us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_2b887e21-c67a-44b6-8335-97abcb64a0e5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeInstrumentsGainLossRecognizedInRegulatoryLiabilitiesAssets_d3ae0ee0-5ec2-4c86-b91c-cdd2eff0dd03" xlink:href="ppl-20250630.xsd#ppl_DerivativeInstrumentsGainLossRecognizedInRegulatoryLiabilitiesAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AmountsIncludedInIncomeStatementOrOtherComprehensiveIncomeAbstract_e89ab123-b7dc-4385-a8b6-cf19585b14a8" xlink:to="loc_ppl_DerivativeInstrumentsGainLossRecognizedInRegulatoryLiabilitiesAssets_d3ae0ee0-5ec2-4c86-b91c-cdd2eff0dd03" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeNet_443e6c8b-9d4e-4058-8557-cdad5800a802" xlink:href="ppl-20250630.xsd#ppl_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_6aa4bace-4f62-408b-965a-c306faf829fb" xlink:to="loc_ppl_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeNet_443e6c8b-9d4e-4058-8557-cdad5800a802" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_HedgedItemGainLossToIncome_cbbcfd9d-3769-43ec-ae99-2a2ad1cb3ad1" xlink:href="ppl-20250630.xsd#ppl_HedgedItemGainLossToIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_6aa4bace-4f62-408b-965a-c306faf829fb" xlink:to="loc_ppl_HedgedItemGainLossToIncome_cbbcfd9d-3769-43ec-ae99-2a2ad1cb3ad1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_03335133-ec60-4b68-8c89-06c674b76f1d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_6aa4bace-4f62-408b-965a-c306faf829fb" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_03335133-ec60-4b68-8c89-06c674b76f1d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_e27ed4d6-ec2e-48bf-a803-96adbc80e1ac" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_6aa4bace-4f62-408b-965a-c306faf829fb" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_e27ed4d6-ec2e-48bf-a803-96adbc80e1ac" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_96653f9e-17ad-408d-9bbf-a3b29fcd8c0e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_6aa4bace-4f62-408b-965a-c306faf829fb" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_96653f9e-17ad-408d-9bbf-a3b29fcd8c0e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_b842c8f6-f3d8-4733-802b-b9f1a8eb31e7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_6aa4bace-4f62-408b-965a-c306faf829fb" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_b842c8f6-f3d8-4733-802b-b9f1a8eb31e7" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_d1632a2d-fc7a-4e34-aafd-3946f5a4da2e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_6aa4bace-4f62-408b-965a-c306faf829fb" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_d1632a2d-fc7a-4e34-aafd-3946f5a4da2e" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesOffsettingDerivativeInstrumentsandCreditRiskRelatedFeaturesDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#DerivativeInstrumentsandHedgingActivitiesOffsettingDerivativeInstrumentsandCreditRiskRelatedFeaturesDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesOffsettingDerivativeInstrumentsandCreditRiskRelatedFeaturesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OffsettingAssetsAndLiabilitiesLineItems_295af0a1-7290-4c58-9586-88cf0ee0c36d" xlink:href="ppl-20250630.xsd#ppl_OffsettingAssetsAndLiabilitiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OffsettingAssetsAndLiabilitiesTable_764103a1-914f-4834-b341-64f431560fae" xlink:href="ppl-20250630.xsd#ppl_OffsettingAssetsAndLiabilitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_OffsettingAssetsAndLiabilitiesLineItems_295af0a1-7290-4c58-9586-88cf0ee0c36d" xlink:to="loc_ppl_OffsettingAssetsAndLiabilitiesTable_764103a1-914f-4834-b341-64f431560fae" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_329996ed-97f6-47fc-8304-147d5c0eb3e8" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_OffsettingAssetsAndLiabilitiesTable_764103a1-914f-4834-b341-64f431560fae" xlink:to="loc_dei_LegalEntityAxis_329996ed-97f6-47fc-8304-147d5c0eb3e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_329996ed-97f6-47fc-8304-147d5c0eb3e8_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_329996ed-97f6-47fc-8304-147d5c0eb3e8" xlink:to="loc_dei_EntityDomain_329996ed-97f6-47fc-8304-147d5c0eb3e8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5d51c470-587d-49d3-91df-c3ae509f184e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_329996ed-97f6-47fc-8304-147d5c0eb3e8" xlink:to="loc_dei_EntityDomain_5d51c470-587d-49d3-91df-c3ae509f184e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCompanyMember_adea73eb-c251-4a94-97eb-4895385d45dc" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5d51c470-587d-49d3-91df-c3ae509f184e" xlink:to="loc_ppl_LouisvilleGasAndElectricCompanyMember_adea73eb-c251-4a94-97eb-4895385d45dc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_049d5337-e91e-4667-9530-5dc370a4d0b2" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5d51c470-587d-49d3-91df-c3ae509f184e" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_049d5337-e91e-4667-9530-5dc370a4d0b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_b5d5517f-d259-46e6-9c16-ceb083fd596d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_OffsettingAssetsAndLiabilitiesTable_764103a1-914f-4834-b341-64f431560fae" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_b5d5517f-d259-46e6-9c16-ceb083fd596d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_b5d5517f-d259-46e6-9c16-ceb083fd596d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_b5d5517f-d259-46e6-9c16-ceb083fd596d" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_b5d5517f-d259-46e6-9c16-ceb083fd596d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_1d02ea18-b17a-4321-af96-c5f0b2fe929b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_b5d5517f-d259-46e6-9c16-ceb083fd596d" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_1d02ea18-b17a-4321-af96-c5f0b2fe929b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SwapMember_5208abd2-0c6f-4e34-bdef-9cb1a9955df4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_1d02ea18-b17a-4321-af96-c5f0b2fe929b" xlink:to="loc_us-gaap_SwapMember_5208abd2-0c6f-4e34-bdef-9cb1a9955df4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OffsettingDerivativeAssetsAbstract_62205023-3376-4b71-a119-675ec71cbd2d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OffsettingDerivativeAssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OffsettingAssetsAndLiabilitiesLineItems_295af0a1-7290-4c58-9586-88cf0ee0c36d" xlink:to="loc_us-gaap_OffsettingDerivativeAssetsAbstract_62205023-3376-4b71-a119-675ec71cbd2d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_6db8e119-b2ef-412a-b8ba-3a261ae29106" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OffsettingDerivativeAssetsAbstract_62205023-3376-4b71-a119-675ec71cbd2d" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_6db8e119-b2ef-412a-b8ba-3a261ae29106" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction_bca1faeb-60df-46ed-b30e-75bc8f410e05" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OffsettingDerivativeAssetsAbstract_62205023-3376-4b71-a119-675ec71cbd2d" xlink:to="loc_us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction_bca1faeb-60df-46ed-b30e-75bc8f410e05" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCollateralObligationToReturnCash_8e5233a2-5b0c-49f6-8044-cf499b360f45" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeCollateralObligationToReturnCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OffsettingDerivativeAssetsAbstract_62205023-3376-4b71-a119-675ec71cbd2d" xlink:to="loc_us-gaap_DerivativeCollateralObligationToReturnCash_8e5233a2-5b0c-49f6-8044-cf499b360f45" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_1c4030df-cf80-4e22-a1b6-bb97f6b73690" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OffsettingDerivativeAssetsAbstract_62205023-3376-4b71-a119-675ec71cbd2d" xlink:to="loc_us-gaap_DerivativeAssets_1c4030df-cf80-4e22-a1b6-bb97f6b73690" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OffsettingDerivativeLiabilitiesAbstract_a3697571-07f6-42c3-8d5f-162f84744f82" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OffsettingDerivativeLiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_OffsettingAssetsAndLiabilitiesLineItems_295af0a1-7290-4c58-9586-88cf0ee0c36d" xlink:to="loc_us-gaap_OffsettingDerivativeLiabilitiesAbstract_a3697571-07f6-42c3-8d5f-162f84744f82" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_214fc32a-ded7-4657-b3bf-74b91bf96508" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OffsettingDerivativeLiabilitiesAbstract_a3697571-07f6-42c3-8d5f-162f84744f82" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_214fc32a-ded7-4657-b3bf-74b91bf96508" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction_334c6dcb-fff3-4be6-a86e-960e53cb8fc4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OffsettingDerivativeLiabilitiesAbstract_a3697571-07f6-42c3-8d5f-162f84744f82" xlink:to="loc_us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction_334c6dcb-fff3-4be6-a86e-960e53cb8fc4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCollateralRightToReclaimCash_6863eb5f-c1a9-44b5-8728-c8a84d7af8c0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeCollateralRightToReclaimCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OffsettingDerivativeLiabilitiesAbstract_a3697571-07f6-42c3-8d5f-162f84744f82" xlink:to="loc_us-gaap_DerivativeCollateralRightToReclaimCash_6863eb5f-c1a9-44b5-8728-c8a84d7af8c0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_dd6d37ea-d371-4a5b-9d79-627911f51e41" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OffsettingDerivativeLiabilitiesAbstract_a3697571-07f6-42c3-8d5f-162f84744f82" xlink:to="loc_us-gaap_DerivativeLiabilities_dd6d37ea-d371-4a5b-9d79-627911f51e41" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeCreditRiskRelatedContingentFeaturesLineItems_6c797e42-2d59-4d94-856e-bc626dddd123" xlink:href="ppl-20250630.xsd#ppl_DerivativeCreditRiskRelatedContingentFeaturesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeCreditRiskRelatedContingentFeaturesTable_0c4a9970-5f96-44ff-a46c-a93cbcc0b429" xlink:href="ppl-20250630.xsd#ppl_DerivativeCreditRiskRelatedContingentFeaturesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_DerivativeCreditRiskRelatedContingentFeaturesLineItems_6c797e42-2d59-4d94-856e-bc626dddd123" xlink:to="loc_ppl_DerivativeCreditRiskRelatedContingentFeaturesTable_0c4a9970-5f96-44ff-a46c-a93cbcc0b429" xlink:type="arc" order="2" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_463d56e0-fa3d-44ed-8299-3eb3f2392cc2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_DerivativeCreditRiskRelatedContingentFeaturesTable_0c4a9970-5f96-44ff-a46c-a93cbcc0b429" xlink:to="loc_dei_LegalEntityAxis_463d56e0-fa3d-44ed-8299-3eb3f2392cc2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_463d56e0-fa3d-44ed-8299-3eb3f2392cc2_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_fe3d76cd-ab22-418f-a6e2-3cfd21a5a2a1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_f8944ffe-b226-436b-a379-5752380994ea" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCreditRiskRelatedContingentFeaturesAbstract_64b34ee9-de3e-43b3-af83-edeaea12c081" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeCreditRiskRelatedContingentFeaturesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_DerivativeCreditRiskRelatedContingentFeaturesLineItems_6c797e42-2d59-4d94-856e-bc626dddd123" xlink:to="loc_us-gaap_DerivativeCreditRiskRelatedContingentFeaturesAbstract_64b34ee9-de3e-43b3-af83-edeaea12c081" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CollateralAlreadyPostedAggregateFairValue_454d45e8-7bfd-41f6-adb9-2ae8963d6ca3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CollateralAlreadyPostedAggregateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeCreditRiskRelatedContingentFeaturesAbstract_64b34ee9-de3e-43b3-af83-edeaea12c081" xlink:to="loc_us-gaap_CollateralAlreadyPostedAggregateFairValue_454d45e8-7bfd-41f6-adb9-2ae8963d6ca3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalCollateralAggregateFairValue_54aebc0f-ba17-4c63-8a7e-2cfe9e9f0b47" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalCollateralAggregateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeCreditRiskRelatedContingentFeaturesAbstract_64b34ee9-de3e-43b3-af83-edeaea12c081" xlink:to="loc_us-gaap_AdditionalCollateralAggregateFairValue_54aebc0f-ba17-4c63-8a7e-2cfe9e9f0b47" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_7a3fe7c1-60e6-4fc0-8d97-77b41a145db6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeNetLiabilityPositionAggregateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeCreditRiskRelatedContingentFeaturesAbstract_64b34ee9-de3e-43b3-af83-edeaea12c081" xlink:to="loc_us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_7a3fe7c1-60e6-4fc0-8d97-77b41a145db6" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesCommodityPurchasesDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#DerivativeInstrumentsandHedgingActivitiesCommodityPurchasesDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesCommodityPurchasesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CommodityPurchasesLineItems_87330228-001c-4ec9-b3d7-e2adac4f621a" xlink:href="ppl-20250630.xsd#ppl_CommodityPurchasesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CommodityPurchasesTable_eb049747-dd44-4344-ab03-e03270d3a52a" xlink:href="ppl-20250630.xsd#ppl_CommodityPurchasesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_CommodityPurchasesLineItems_87330228-001c-4ec9-b3d7-e2adac4f621a" xlink:to="loc_ppl_CommodityPurchasesTable_eb049747-dd44-4344-ab03-e03270d3a52a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_538776e6-4be1-4ee6-ab70-592ba6c40cef" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_CommodityPurchasesTable_eb049747-dd44-4344-ab03-e03270d3a52a" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_538776e6-4be1-4ee6-ab70-592ba6c40cef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_538776e6-4be1-4ee6-ab70-592ba6c40cef_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_538776e6-4be1-4ee6-ab70-592ba6c40cef" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_538776e6-4be1-4ee6-ab70-592ba6c40cef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_76e7aa0d-ef2b-4ce0-bdac-2e74644d5952" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_538776e6-4be1-4ee6-ab70-592ba6c40cef" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_76e7aa0d-ef2b-4ce0-bdac-2e74644d5952" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_OtherDeferredCreditsAndNoncurrentLiabilitiesMember_c7c58d72-da45-4703-96da-d3d6379e1ed7" xlink:href="ppl-20250630.xsd#ppl_OtherDeferredCreditsAndNoncurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_76e7aa0d-ef2b-4ce0-bdac-2e74644d5952" xlink:to="loc_ppl_OtherDeferredCreditsAndNoncurrentLiabilitiesMember_c7c58d72-da45-4703-96da-d3d6379e1ed7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PriceRiskManagementAssetsNoncurrentMember_f85f11bb-a91b-4e68-85e5-05177707ac8b" xlink:href="ppl-20250630.xsd#ppl_PriceRiskManagementAssetsNoncurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_76e7aa0d-ef2b-4ce0-bdac-2e74644d5952" xlink:to="loc_ppl_PriceRiskManagementAssetsNoncurrentMember_f85f11bb-a91b-4e68-85e5-05177707ac8b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PriceRiskManagementAssetsCurrentMember_ee3bf8e1-1b70-45c2-b334-d00f0c82efa7" xlink:href="ppl-20250630.xsd#ppl_PriceRiskManagementAssetsCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_76e7aa0d-ef2b-4ce0-bdac-2e74644d5952" xlink:to="loc_ppl_PriceRiskManagementAssetsCurrentMember_ee3bf8e1-1b70-45c2-b334-d00f0c82efa7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CurrentAssetsMember_fb2c9624-770a-41c1-846c-59f3c6422db3" xlink:href="ppl-20250630.xsd#ppl_CurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_76e7aa0d-ef2b-4ce0-bdac-2e74644d5952" xlink:to="loc_ppl_CurrentAssetsMember_fb2c9624-770a-41c1-846c-59f3c6422db3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CurrentLiabilitiesMember_c836609e-0bcf-4bcf-9818-56977be042f9" xlink:href="ppl-20250630.xsd#ppl_CurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_76e7aa0d-ef2b-4ce0-bdac-2e74644d5952" xlink:to="loc_ppl_CurrentLiabilitiesMember_c836609e-0bcf-4bcf-9818-56977be042f9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NoncurrentAssetsMember_e5f77a05-4348-4fb7-80b5-40bf0d7e0595" xlink:href="ppl-20250630.xsd#ppl_NoncurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_76e7aa0d-ef2b-4ce0-bdac-2e74644d5952" xlink:to="loc_ppl_NoncurrentAssetsMember_e5f77a05-4348-4fb7-80b5-40bf0d7e0595" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_NoncurrentLiabilitiesMember_868e0d77-b62a-41f6-9f26-44bebb03a26e" xlink:href="ppl-20250630.xsd#ppl_NoncurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_76e7aa0d-ef2b-4ce0-bdac-2e74644d5952" xlink:to="loc_ppl_NoncurrentLiabilitiesMember_868e0d77-b62a-41f6-9f26-44bebb03a26e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCurrentAssetsMember_c1bd38a3-d9fe-46ac-b6a5-1e6c08a822b9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherCurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_76e7aa0d-ef2b-4ce0-bdac-2e74644d5952" xlink:to="loc_us-gaap_OtherCurrentAssetsMember_c1bd38a3-d9fe-46ac-b6a5-1e6c08a822b9" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCurrentLiabilitiesMember_d19ce823-cf81-468c-b13d-35a28cdcd0d2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherCurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_76e7aa0d-ef2b-4ce0-bdac-2e74644d5952" xlink:to="loc_us-gaap_OtherCurrentLiabilitiesMember_d19ce823-cf81-468c-b13d-35a28cdcd0d2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentAssetsMember_2fb781ab-9a72-4f1b-b9ad-168e40904c48" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNoncurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_76e7aa0d-ef2b-4ce0-bdac-2e74644d5952" xlink:to="loc_us-gaap_OtherNoncurrentAssetsMember_2fb781ab-9a72-4f1b-b9ad-168e40904c48" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentLiabilitiesMember_c4d4fe61-b2aa-4ea2-89d5-3b37e3a4e925" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNoncurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_76e7aa0d-ef2b-4ce0-bdac-2e74644d5952" xlink:to="loc_us-gaap_OtherNoncurrentLiabilitiesMember_c4d4fe61-b2aa-4ea2-89d5-3b37e3a4e925" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_e91daf49-5fc2-4468-8afc-aaf2b5ede87d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_CommodityPurchasesTable_eb049747-dd44-4344-ab03-e03270d3a52a" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_e91daf49-5fc2-4468-8afc-aaf2b5ede87d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_e91daf49-5fc2-4468-8afc-aaf2b5ede87d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_e91daf49-5fc2-4468-8afc-aaf2b5ede87d" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_e91daf49-5fc2-4468-8afc-aaf2b5ede87d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_740d34de-6451-428c-a967-9c717b8c6f03" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_e91daf49-5fc2-4468-8afc-aaf2b5ede87d" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_740d34de-6451-428c-a967-9c717b8c6f03" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_bdcab93f-c6f3-4fe6-b39c-fd10c50eb045" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_740d34de-6451-428c-a967-9c717b8c6f03" xlink:to="loc_us-gaap_CommodityContractMember_bdcab93f-c6f3-4fe6-b39c-fd10c50eb045" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_2fb6b8e4-c2f9-4c05-a464-ccd3b7ec10b0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_740d34de-6451-428c-a967-9c717b8c6f03" xlink:to="loc_us-gaap_InterestRateSwapMember_2fb6b8e4-c2f9-4c05-a464-ccd3b7ec10b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_33bfecab-50b4-40f5-9bc9-e6482854409a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_CommodityPurchasesTable_eb049747-dd44-4344-ab03-e03270d3a52a" xlink:to="loc_us-gaap_HedgingDesignationAxis_33bfecab-50b4-40f5-9bc9-e6482854409a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_33bfecab-50b4-40f5-9bc9-e6482854409a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_33bfecab-50b4-40f5-9bc9-e6482854409a" xlink:to="loc_us-gaap_HedgingDesignationDomain_33bfecab-50b4-40f5-9bc9-e6482854409a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_aaf88fd6-6c61-48ae-b8a2-9e91e2479963" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_33bfecab-50b4-40f5-9bc9-e6482854409a" xlink:to="loc_us-gaap_HedgingDesignationDomain_aaf88fd6-6c61-48ae-b8a2-9e91e2479963" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_030d3f53-f741-4348-a898-45238d7984b4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_aaf88fd6-6c61-48ae-b8a2-9e91e2479963" xlink:to="loc_us-gaap_NondesignatedMember_030d3f53-f741-4348-a898-45238d7984b4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_dacd4cc0-a487-4ce3-8ec8-1a99d83f5f42" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_aaf88fd6-6c61-48ae-b8a2-9e91e2479963" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_dacd4cc0-a487-4ce3-8ec8-1a99d83f5f42" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_862bdbd8-3d3c-4bd1-9119-c55e07f1cc50" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_CommodityPurchasesTable_eb049747-dd44-4344-ab03-e03270d3a52a" xlink:to="loc_dei_LegalEntityAxis_862bdbd8-3d3c-4bd1-9119-c55e07f1cc50" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_862bdbd8-3d3c-4bd1-9119-c55e07f1cc50_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_862bdbd8-3d3c-4bd1-9119-c55e07f1cc50" xlink:to="loc_dei_EntityDomain_862bdbd8-3d3c-4bd1-9119-c55e07f1cc50_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9de174a7-0caf-4d95-93f4-99768af59db0" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_862bdbd8-3d3c-4bd1-9119-c55e07f1cc50" xlink:to="loc_dei_EntityDomain_9de174a7-0caf-4d95-93f4-99768af59db0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_608cd80a-34bb-4434-bd3d-a57cf9f486c9" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9de174a7-0caf-4d95-93f4-99768af59db0" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_608cd80a-34bb-4434-bd3d-a57cf9f486c9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_32fadc63-8925-43f3-b1ab-c798e9186c8a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CommodityPurchasesLineItems_87330228-001c-4ec9-b3d7-e2adac4f621a" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_32fadc63-8925-43f3-b1ab-c798e9186c8a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_9e46fc1d-1cd3-481a-835d-cfe11f3e947b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CommodityPurchasesLineItems_87330228-001c-4ec9-b3d7-e2adac4f621a" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_9e46fc1d-1cd3-481a-835d-cfe11f3e947b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_DerivativeNetLiabilityPositionContainingCreditRiskRelatedContingencyFeature_12043c7d-c4c5-4bcd-a325-32914226d8a1" xlink:href="ppl-20250630.xsd#ppl_DerivativeNetLiabilityPositionContainingCreditRiskRelatedContingencyFeature"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CommodityPurchasesLineItems_87330228-001c-4ec9-b3d7-e2adac4f621a" xlink:to="loc_ppl_DerivativeNetLiabilityPositionContainingCreditRiskRelatedContingencyFeature_12043c7d-c4c5-4bcd-a325-32914226d8a1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalCollateralAggregateFairValue_3c1d5ca1-40eb-4678-abe6-7c2bbfc74cd9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalCollateralAggregateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CommodityPurchasesLineItems_87330228-001c-4ec9-b3d7-e2adac4f621a" xlink:to="loc_us-gaap_AdditionalCollateralAggregateFairValue_3c1d5ca1-40eb-4678-abe6-7c2bbfc74cd9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PriceRiskManagementLiabilities_dfdfcab7-07f0-4494-925b-dc17e622c8ac" xlink:href="ppl-20250630.xsd#ppl_PriceRiskManagementLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_CommodityPurchasesLineItems_87330228-001c-4ec9-b3d7-e2adac4f621a" xlink:to="loc_ppl_PriceRiskManagementLiabilities_dfdfcab7-07f0-4494-925b-dc17e622c8ac" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/GoodwillandOtherIntangibleAssetsGoodwillandOtherIntangibleAssetsDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#GoodwillandOtherIntangibleAssetsGoodwillandOtherIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/GoodwillandOtherIntangibleAssetsGoodwillandOtherIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_c02e6fbc-213f-43af-abad-0daf348471c1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_16d70d68-e587-4acc-909b-7080a5d177d4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_c02e6fbc-213f-43af-abad-0daf348471c1" xlink:to="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_16d70d68-e587-4acc-909b-7080a5d177d4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_cf0892f6-9837-4782-be9f-d47ef83c72f5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_16d70d68-e587-4acc-909b-7080a5d177d4" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_cf0892f6-9837-4782-be9f-d47ef83c72f5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_cf0892f6-9837-4782-be9f-d47ef83c72f5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_cf0892f6-9837-4782-be9f-d47ef83c72f5" xlink:to="loc_us-gaap_SegmentDomain_cf0892f6-9837-4782-be9f-d47ef83c72f5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_34b9cf55-e2d7-4160-aaf1-38f9f6fc0d6d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_cf0892f6-9837-4782-be9f-d47ef83c72f5" xlink:to="loc_us-gaap_SegmentDomain_34b9cf55-e2d7-4160-aaf1-38f9f6fc0d6d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateMember_1195bc86-06da-4b9e-9174-2eae4c7cba0e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_34b9cf55-e2d7-4160-aaf1-38f9f6fc0d6d" xlink:to="loc_us-gaap_CorporateMember_1195bc86-06da-4b9e-9174-2eae4c7cba0e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_UnitedKingdomRegulatedMember_6ebf25bd-6eab-40a3-afb3-245e1da943ca" xlink:href="ppl-20250630.xsd#ppl_UnitedKingdomRegulatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_34b9cf55-e2d7-4160-aaf1-38f9f6fc0d6d" xlink:to="loc_ppl_UnitedKingdomRegulatedMember_6ebf25bd-6eab-40a3-afb3-245e1da943ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_9e893f8c-1b3f-49a3-b4e6-bfbd31d37e86" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_16d70d68-e587-4acc-909b-7080a5d177d4" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_9e893f8c-1b3f-49a3-b4e6-bfbd31d37e86" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_9e893f8c-1b3f-49a3-b4e6-bfbd31d37e86_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_9e893f8c-1b3f-49a3-b4e6-bfbd31d37e86" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_9e893f8c-1b3f-49a3-b4e6-bfbd31d37e86_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_d1fecf2a-0121-4de6-8564-f9271c6decc3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_9e893f8c-1b3f-49a3-b4e6-bfbd31d37e86" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_d1fecf2a-0121-4de6-8564-f9271c6decc3" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/AssetRetirementObligationsDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#AssetRetirementObligationsDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/AssetRetirementObligationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AssetRetirementObligationLineItems_6fbe969f-668d-479e-9da1-5a92b7ff5938" xlink:href="ppl-20250630.xsd#ppl_AssetRetirementObligationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AssetRetirementObligationsTable_53aa519d-c3e1-4e94-be9d-0abf2baf35c7" xlink:href="ppl-20250630.xsd#ppl_AssetRetirementObligationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ppl_AssetRetirementObligationLineItems_6fbe969f-668d-479e-9da1-5a92b7ff5938" xlink:to="loc_ppl_AssetRetirementObligationsTable_53aa519d-c3e1-4e94-be9d-0abf2baf35c7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_249892ab-be22-4ae3-9618-5b8741a331f3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_AssetRetirementObligationsTable_53aa519d-c3e1-4e94-be9d-0abf2baf35c7" xlink:to="loc_dei_LegalEntityAxis_249892ab-be22-4ae3-9618-5b8741a331f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_249892ab-be22-4ae3-9618-5b8741a331f3_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_249892ab-be22-4ae3-9618-5b8741a331f3" xlink:to="loc_dei_EntityDomain_249892ab-be22-4ae3-9618-5b8741a331f3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_2c31b18f-8a88-4123-98ba-9e9f9f34e13b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_249892ab-be22-4ae3-9618-5b8741a331f3" xlink:to="loc_dei_EntityDomain_2c31b18f-8a88-4123-98ba-9e9f9f34e13b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PplElectricUtilitiesCorpMember_6e2ae0e8-db7e-4a37-bd3c-ff14c28d6b99" xlink:href="ppl-20250630.xsd#ppl_PplElectricUtilitiesCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2c31b18f-8a88-4123-98ba-9e9f9f34e13b" xlink:to="loc_ppl_PplElectricUtilitiesCorpMember_6e2ae0e8-db7e-4a37-bd3c-ff14c28d6b99" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_LouisvilleGasAndElectricCoMember_f143a083-2dc9-4480-99cb-9ea5bfcc55bb" xlink:href="ppl-20250630.xsd#ppl_LouisvilleGasAndElectricCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2c31b18f-8a88-4123-98ba-9e9f9f34e13b" xlink:to="loc_ppl_LouisvilleGasAndElectricCoMember_f143a083-2dc9-4480-99cb-9ea5bfcc55bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_KentuckyUtilitiesCoMember_81aa1df0-70bd-4a21-b97f-a8c5d3f9cefe" xlink:href="ppl-20250630.xsd#ppl_KentuckyUtilitiesCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2c31b18f-8a88-4123-98ba-9e9f9f34e13b" xlink:to="loc_ppl_KentuckyUtilitiesCoMember_81aa1df0-70bd-4a21-b97f-a8c5d3f9cefe" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_3f465e02-99d5-492f-bc00-516dd85a4ef6" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ppl_AssetRetirementObligationsTable_53aa519d-c3e1-4e94-be9d-0abf2baf35c7" xlink:to="loc_srt_RangeAxis_3f465e02-99d5-492f-bc00-516dd85a4ef6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_3f465e02-99d5-492f-bc00-516dd85a4ef6_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_3f465e02-99d5-492f-bc00-516dd85a4ef6" xlink:to="loc_srt_RangeMember_3f465e02-99d5-492f-bc00-516dd85a4ef6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_d858fcfa-1365-43ba-94ec-440bd4be7d18" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_3f465e02-99d5-492f-bc00-516dd85a4ef6" xlink:to="loc_srt_RangeMember_d858fcfa-1365-43ba-94ec-440bd4be7d18" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_8f67ba57-bf61-4760-a14a-ee6d2c729ba7" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_d858fcfa-1365-43ba-94ec-440bd4be7d18" xlink:to="loc_srt_MinimumMember_8f67ba57-bf61-4760-a14a-ee6d2c729ba7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_08a3fd6e-d2a9-42ca-95c2-9d93ca4e621c" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_d858fcfa-1365-43ba-94ec-440bd4be7d18" xlink:to="loc_srt_MaximumMember_08a3fd6e-d2a9-42ca-95c2-9d93ca4e621c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e4f2ff66-f58f-43aa-9034-d9743364e703" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AssetRetirementObligationLineItems_6fbe969f-668d-479e-9da1-5a92b7ff5938" xlink:to="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e4f2ff66-f58f-43aa-9034-d9743364e703" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligation_4db666f4-b17e-46dc-813b-a02d2117d7f9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e4f2ff66-f58f-43aa-9034-d9743364e703" xlink:to="loc_us-gaap_AssetRetirementObligation_4db666f4-b17e-46dc-813b-a02d2117d7f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationAccretionExpense_2c947f08-18a4-4d9e-9981-3f2304cbbfd1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationAccretionExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e4f2ff66-f58f-43aa-9034-d9743364e703" xlink:to="loc_us-gaap_AssetRetirementObligationAccretionExpense_2c947f08-18a4-4d9e-9981-3f2304cbbfd1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsIncurredAssetRetirementObligationIncurred_77a78651-28ba-45e0-8adf-dd50be56cbc7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostsIncurredAssetRetirementObligationIncurred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e4f2ff66-f58f-43aa-9034-d9743364e703" xlink:to="loc_us-gaap_CostsIncurredAssetRetirementObligationIncurred_77a78651-28ba-45e0-8adf-dd50be56cbc7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationRevisionOfEstimate_21dc05dd-6fc8-46c1-a81b-b7baba6eca4f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationRevisionOfEstimate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e4f2ff66-f58f-43aa-9034-d9743364e703" xlink:to="loc_us-gaap_AssetRetirementObligationRevisionOfEstimate_21dc05dd-6fc8-46c1-a81b-b7baba6eca4f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationLiabilitiesSettled_12221785-5377-44c6-9204-9ef47db3ebf0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationLiabilitiesSettled"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e4f2ff66-f58f-43aa-9034-d9743364e703" xlink:to="loc_us-gaap_AssetRetirementObligationLiabilitiesSettled_12221785-5377-44c6-9204-9ef47db3ebf0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AssetRetirementObligationsPeriodChangeMiscellaneous_fb2c6f33-c42e-44a6-b874-a84ebc1cd7b9" xlink:href="ppl-20250630.xsd#ppl_AssetRetirementObligationsPeriodChangeMiscellaneous"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e4f2ff66-f58f-43aa-9034-d9743364e703" xlink:to="loc_ppl_AssetRetirementObligationsPeriodChangeMiscellaneous_fb2c6f33-c42e-44a6-b874-a84ebc1cd7b9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligation_a778258b-d865-4797-b6dc-1d84448604ac" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligation"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetAmortizationPeriod_2c5dc7b7-ae37-4750-ac01-42156bfa695c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RegulatoryAssetAmortizationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AssetRetirementObligationLineItems_6fbe969f-668d-479e-9da1-5a92b7ff5938" xlink:to="loc_us-gaap_RegulatoryAssetAmortizationPeriod_2c5dc7b7-ae37-4750-ac01-42156bfa695c" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/AccumulatedOtherComprehensiveIncomeLossAftertaxChangesbyComponentDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#AccumulatedOtherComprehensiveIncomeLossAftertaxChangesbyComponentDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/AccumulatedOtherComprehensiveIncomeLossAftertaxChangesbyComponentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_31d9070e-6eeb-4edb-8d6d-a53c8ae9fb9c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_16340373-0fca-4693-87fb-518406357133" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_31d9070e-6eeb-4edb-8d6d-a53c8ae9fb9c" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_16340373-0fca-4693-87fb-518406357133" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_27e90645-b1e2-4ffe-9081-024c48cc831e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_16340373-0fca-4693-87fb-518406357133" xlink:to="loc_dei_LegalEntityAxis_27e90645-b1e2-4ffe-9081-024c48cc831e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_27e90645-b1e2-4ffe-9081-024c48cc831e_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_27e90645-b1e2-4ffe-9081-024c48cc831e" xlink:to="loc_dei_EntityDomain_27e90645-b1e2-4ffe-9081-024c48cc831e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3c6cab61-aae5-4391-9596-1bb646460e0a" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_27e90645-b1e2-4ffe-9081-024c48cc831e" xlink:to="loc_dei_EntityDomain_3c6cab61-aae5-4391-9596-1bb646460e0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_e8d45a11-13d9-4ffa-a1d3-d816fbbd5ae5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_16340373-0fca-4693-87fb-518406357133" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_e8d45a11-13d9-4ffa-a1d3-d816fbbd5ae5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_e8d45a11-13d9-4ffa-a1d3-d816fbbd5ae5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_e8d45a11-13d9-4ffa-a1d3-d816fbbd5ae5" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_e8d45a11-13d9-4ffa-a1d3-d816fbbd5ae5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_9973e7e5-7068-4f7c-8880-f5083667e1ae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_e8d45a11-13d9-4ffa-a1d3-d816fbbd5ae5" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_9973e7e5-7068-4f7c-8880-f5083667e1ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_WPDMember_83a32067-6c9f-4bb0-95af-bbbb3bda5113" xlink:href="ppl-20250630.xsd#ppl_WPDMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_9973e7e5-7068-4f7c-8880-f5083667e1ae" xlink:to="loc_ppl_WPDMember_83a32067-6c9f-4bb0-95af-bbbb3bda5113" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_64d67050-d83e-4d6c-88b9-aae0fbf85b03" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_16340373-0fca-4693-87fb-518406357133" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_64d67050-d83e-4d6c-88b9-aae0fbf85b03" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_64d67050-d83e-4d6c-88b9-aae0fbf85b03_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_64d67050-d83e-4d6c-88b9-aae0fbf85b03" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_64d67050-d83e-4d6c-88b9-aae0fbf85b03_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_f5b7e73b-4dd1-4f26-a7b5-a7443fadad1e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_64d67050-d83e-4d6c-88b9-aae0fbf85b03" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_f5b7e73b-4dd1-4f26-a7b5-a7443fadad1e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_62ac9c22-7da9-4167-aeaa-5f90d4b4ac03" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_f5b7e73b-4dd1-4f26-a7b5-a7443fadad1e" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_62ac9c22-7da9-4167-aeaa-5f90d4b4ac03" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailAxis_dfce6bad-b2f6-4f9e-a711-009d3495fdea" xlink:href="ppl-20250630.xsd#ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_16340373-0fca-4693-87fb-518406357133" xlink:to="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailAxis_dfce6bad-b2f6-4f9e-a711-009d3495fdea" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailDomain_dfce6bad-b2f6-4f9e-a711-009d3495fdea_default" xlink:href="ppl-20250630.xsd#ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailAxis_dfce6bad-b2f6-4f9e-a711-009d3495fdea" xlink:to="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailDomain_dfce6bad-b2f6-4f9e-a711-009d3495fdea_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailDomain_27deec31-93e0-4c93-8e75-f641598c0c7c" xlink:href="ppl-20250630.xsd#ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailAxis_dfce6bad-b2f6-4f9e-a711-009d3495fdea" xlink:to="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailDomain_27deec31-93e0-4c93-8e75-f641598c0c7c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDueToSaleOfUKUtilityBusinessMember_c1adf8f9-3b41-4b53-8fb6-00aaf2052da0" xlink:href="ppl-20250630.xsd#ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDueToSaleOfUKUtilityBusinessMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailDomain_27deec31-93e0-4c93-8e75-f641598c0c7c" xlink:to="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDueToSaleOfUKUtilityBusinessMember_c1adf8f9-3b41-4b53-8fb6-00aaf2052da0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsAxis_fc0fdecd-b432-4365-9887-e65198e13ee3" xlink:href="ppl-20250630.xsd#ppl_AccumulatedOtherComprehensiveIncomeComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_16340373-0fca-4693-87fb-518406357133" xlink:to="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsAxis_fc0fdecd-b432-4365-9887-e65198e13ee3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_fc0fdecd-b432-4365-9887-e65198e13ee3_default" xlink:href="ppl-20250630.xsd#ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsAxis_fc0fdecd-b432-4365-9887-e65198e13ee3" xlink:to="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_fc0fdecd-b432-4365-9887-e65198e13ee3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_c03c83a8-d55c-4f79-a1e5-ca1d7ac109d2" xlink:href="ppl-20250630.xsd#ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsAxis_fc0fdecd-b432-4365-9887-e65198e13ee3" xlink:to="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_c03c83a8-d55c-4f79-a1e5-ca1d7ac109d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_81277ff6-7b34-485c-af68-49605e94b212" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_c03c83a8-d55c-4f79-a1e5-ca1d7ac109d2" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_81277ff6-7b34-485c-af68-49605e94b212" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_5d9e6b6e-641a-44a1-a228-1fba3f77cf69" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_c03c83a8-d55c-4f79-a1e5-ca1d7ac109d2" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_5d9e6b6e-641a-44a1-a228-1fba3f77cf69" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccumulatedOtherComprehensiveIncomeEquityMethodInvestmentMember_190c1040-4c9c-41ba-8314-b0fdbd108d60" xlink:href="ppl-20250630.xsd#ppl_AccumulatedOtherComprehensiveIncomeEquityMethodInvestmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_c03c83a8-d55c-4f79-a1e5-ca1d7ac109d2" xlink:to="loc_ppl_AccumulatedOtherComprehensiveIncomeEquityMethodInvestmentMember_190c1040-4c9c-41ba-8314-b0fdbd108d60" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_bd292691-f969-4806-8e94-ef3560865a96" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_c03c83a8-d55c-4f79-a1e5-ca1d7ac109d2" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_bd292691-f969-4806-8e94-ef3560865a96" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_3de511cb-16d5-4a51-b34d-1b014e1d0224" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_c03c83a8-d55c-4f79-a1e5-ca1d7ac109d2" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_3de511cb-16d5-4a51-b34d-1b014e1d0224" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_4693c4fd-3cb1-449b-b81f-8e08c9e605db" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_31d9070e-6eeb-4edb-8d6d-a53c8ae9fb9c" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_4693c4fd-3cb1-449b-b81f-8e08c9e605db" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_91799110-f9ff-4571-a130-d0f5fb189679" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_31d9070e-6eeb-4edb-8d6d-a53c8ae9fb9c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_91799110-f9ff-4571-a130-d0f5fb189679" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_d8521f15-4502-494c-8f21-3f6443e6016a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_31d9070e-6eeb-4edb-8d6d-a53c8ae9fb9c" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_d8521f15-4502-494c-8f21-3f6443e6016a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_9a60390f-0ad2-4ca2-ae02-04209b828d44" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_31d9070e-6eeb-4edb-8d6d-a53c8ae9fb9c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_9a60390f-0ad2-4ca2-ae02-04209b828d44" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_8c05f9bf-597b-406a-980f-b3e7051050d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/AccumulatedOtherComprehensiveIncomeLossIncomeExpenseEffectofReclassificationsDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#AccumulatedOtherComprehensiveIncomeLossIncomeExpenseEffectofReclassificationsDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/AccumulatedOtherComprehensiveIncomeLossIncomeExpenseEffectofReclassificationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_4d167d7f-3f32-49c6-8b37-4e00e575bebd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_005269fb-0c5a-4397-9881-17c2f4a315ff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_4d167d7f-3f32-49c6-8b37-4e00e575bebd" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_005269fb-0c5a-4397-9881-17c2f4a315ff" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsAxis_46f09bc2-5ad5-4fe9-a237-cd6274621d36" xlink:href="ppl-20250630.xsd#ppl_AccumulatedOtherComprehensiveIncomeComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_005269fb-0c5a-4397-9881-17c2f4a315ff" xlink:to="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsAxis_46f09bc2-5ad5-4fe9-a237-cd6274621d36" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_46f09bc2-5ad5-4fe9-a237-cd6274621d36_default" xlink:href="ppl-20250630.xsd#ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsAxis_46f09bc2-5ad5-4fe9-a237-cd6274621d36" xlink:to="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_46f09bc2-5ad5-4fe9-a237-cd6274621d36_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_a97383cb-2a25-4b4e-aaaa-cf736c4a62d7" xlink:href="ppl-20250630.xsd#ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsAxis_46f09bc2-5ad5-4fe9-a237-cd6274621d36" xlink:to="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_a97383cb-2a25-4b4e-aaaa-cf736c4a62d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_29e4a136-d07e-4558-858b-ab093ad46fad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_a97383cb-2a25-4b4e-aaaa-cf736c4a62d7" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_29e4a136-d07e-4558-858b-ab093ad46fad" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_ae8ae79e-3da5-4460-89cc-66d2b76c4ef1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_a97383cb-2a25-4b4e-aaaa-cf736c4a62d7" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_ae8ae79e-3da5-4460-89cc-66d2b76c4ef1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_aa7fd71b-5ee8-4a07-8599-c58fce941174" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_AccumulatedOtherComprehensiveIncomeComponentsDomain_a97383cb-2a25-4b4e-aaaa-cf736c4a62d7" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_aa7fd71b-5ee8-4a07-8599-c58fce941174" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_58ffac6c-9d81-4359-b9fc-eb998955b564" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_dbd3fcc0-f8d1-4c6a-9136-eea88ed45821" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_fe910f06-ce61-4090-8bb7-365bedbcbb58" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_005269fb-0c5a-4397-9881-17c2f4a315ff" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_fe910f06-ce61-4090-8bb7-365bedbcbb58" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_fe910f06-ce61-4090-8bb7-365bedbcbb58_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_fe910f06-ce61-4090-8bb7-365bedbcbb58" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_fe910f06-ce61-4090-8bb7-365bedbcbb58_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_d382a5b9-5562-498f-8c09-6ca957e248c1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_fe910f06-ce61-4090-8bb7-365bedbcbb58" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_d382a5b9-5562-498f-8c09-6ca957e248c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_67ca6155-4adc-4d49-bec1-6f7898c50e20" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_d382a5b9-5562-498f-8c09-6ca957e248c1" xlink:to="loc_us-gaap_InterestRateSwapMember_67ca6155-4adc-4d49-bec1-6f7898c50e20" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CrossCurrencyInterestRateContractMember_387f2339-3db3-4b2b-998d-c40c89f1b605" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CrossCurrencyInterestRateContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_d382a5b9-5562-498f-8c09-6ca957e248c1" xlink:to="loc_us-gaap_CrossCurrencyInterestRateContractMember_387f2339-3db3-4b2b-998d-c40c89f1b605" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccumulatedDefinedBenefitPlansPriorServiceCostsMember_a6949e29-ce73-4374-83e3-fe5ba0bee75a" xlink:href="ppl-20250630.xsd#ppl_AccumulatedDefinedBenefitPlansPriorServiceCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_d382a5b9-5562-498f-8c09-6ca957e248c1" xlink:to="loc_ppl_AccumulatedDefinedBenefitPlansPriorServiceCostsMember_a6949e29-ce73-4374-83e3-fe5ba0bee75a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_AccumulatedDefinedBenefitPlansActuarialGainLossMember_ca4ca6f6-bec0-45d1-bc68-2ae0afc1d830" xlink:href="ppl-20250630.xsd#ppl_AccumulatedDefinedBenefitPlansActuarialGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_d382a5b9-5562-498f-8c09-6ca957e248c1" xlink:to="loc_ppl_AccumulatedDefinedBenefitPlansActuarialGainLossMember_ca4ca6f6-bec0-45d1-bc68-2ae0afc1d830" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_4cbf95b9-0bd2-42b2-bc6d-f56ba50be293" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_d382a5b9-5562-498f-8c09-6ca957e248c1" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_4cbf95b9-0bd2-42b2-bc6d-f56ba50be293" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_f846d3a4-302a-4792-a7be-9eda3b498458" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_d382a5b9-5562-498f-8c09-6ca957e248c1" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_f846d3a4-302a-4792-a7be-9eda3b498458" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_6ead7d44-8609-4bbe-8e91-be9fb9824e08" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_005269fb-0c5a-4397-9881-17c2f4a315ff" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_6ead7d44-8609-4bbe-8e91-be9fb9824e08" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_6ead7d44-8609-4bbe-8e91-be9fb9824e08_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_6ead7d44-8609-4bbe-8e91-be9fb9824e08" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_6ead7d44-8609-4bbe-8e91-be9fb9824e08_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_dc106fb6-7be1-4cd4-bf80-7149d30bbb70" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_6ead7d44-8609-4bbe-8e91-be9fb9824e08" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_dc106fb6-7be1-4cd4-bf80-7149d30bbb70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_964a9f53-5164-4a75-a629-371b4a4adecc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_dc106fb6-7be1-4cd4-bf80-7149d30bbb70" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_964a9f53-5164-4a75-a629-371b4a4adecc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailAxis_865bd7e8-ed18-4830-8968-6d89ae470f97" xlink:href="ppl-20250630.xsd#ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_005269fb-0c5a-4397-9881-17c2f4a315ff" xlink:to="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailAxis_865bd7e8-ed18-4830-8968-6d89ae470f97" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailDomain_865bd7e8-ed18-4830-8968-6d89ae470f97_default" xlink:href="ppl-20250630.xsd#ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailAxis_865bd7e8-ed18-4830-8968-6d89ae470f97" xlink:to="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailDomain_865bd7e8-ed18-4830-8968-6d89ae470f97_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailDomain_295f89cb-5fae-4626-889b-cd7858368a71" xlink:href="ppl-20250630.xsd#ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailAxis_865bd7e8-ed18-4830-8968-6d89ae470f97" xlink:to="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailDomain_295f89cb-5fae-4626-889b-cd7858368a71" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDueToSaleOfUKUtilityBusinessMember_b613feef-7bea-4d32-9b89-aefff7e8bb10" xlink:href="ppl-20250630.xsd#ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDueToSaleOfUKUtilityBusinessMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDetailDomain_295f89cb-5fae-4626-889b-cd7858368a71" xlink:to="loc_ppl_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeLossDueToSaleOfUKUtilityBusinessMember_b613feef-7bea-4d32-9b89-aefff7e8bb10" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_587ebd3a-72fb-46c2-8134-e885a6fbae6d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_4d167d7f-3f32-49c6-8b37-4e00e575bebd" xlink:to="loc_us-gaap_InterestExpense_587ebd3a-72fb-46c2-8134-e885a6fbae6d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_dba9af1b-9984-4944-9b41-dd6b07ccab92" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_4d167d7f-3f32-49c6-8b37-4e00e575bebd" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_dba9af1b-9984-4944-9b41-dd6b07ccab92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_fd6722ba-e5a9-434e-86ea-c48b6e491768" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_4d167d7f-3f32-49c6-8b37-4e00e575bebd" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_fd6722ba-e5a9-434e-86ea-c48b6e491768" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_5d4a9f33-fbd8-44d8-a929-b41d9937a9c8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_4d167d7f-3f32-49c6-8b37-4e00e575bebd" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_5d4a9f33-fbd8-44d8-a929-b41d9937a9c8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_f7cb4bc4-b28b-444d-8f7b-fe51e177b4d0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_4d167d7f-3f32-49c6-8b37-4e00e575bebd" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_f7cb4bc4-b28b-444d-8f7b-fe51e177b4d0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_18b0776d-d440-4b3b-870e-1dd6ad500099" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_4d167d7f-3f32-49c6-8b37-4e00e575bebd" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_18b0776d-d440-4b3b-870e-1dd6ad500099" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_2cbee773-3dc8-4c4f-9075-ebccdc027a3d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_4d167d7f-3f32-49c6-8b37-4e00e575bebd" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_2cbee773-3dc8-4c4f-9075-ebccdc027a3d" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pplelectric.com/role/NewAccountingGuidancePendingAdoptionNewAccountingGuidancePendingAdoptionDetails" xlink:type="simple" xlink:href="ppl-20250630.xsd#NewAccountingGuidancePendingAdoptionNewAccountingGuidancePendingAdoptionDetails"/>
  <link:definitionLink xlink:role="http://www.pplelectric.com/role/NewAccountingGuidancePendingAdoptionNewAccountingGuidancePendingAdoptionDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_95317c5c-f490-4bb6-a124-510577c2255c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_131ec7d1-ede2-4334-8314-2693a255faa7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_95317c5c-f490-4bb6-a124-510577c2255c" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_131ec7d1-ede2-4334-8314-2693a255faa7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_0b09628b-c043-45d1-88a8-247d0deb530b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_131ec7d1-ede2-4334-8314-2693a255faa7" xlink:to="loc_dei_LegalEntityAxis_0b09628b-c043-45d1-88a8-247d0deb530b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0b09628b-c043-45d1-88a8-247d0deb530b_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_0b09628b-c043-45d1-88a8-247d0deb530b" xlink:to="loc_dei_EntityDomain_0b09628b-c043-45d1-88a8-247d0deb530b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1a0c2db7-088a-46b1-b1bb-7d6281d29920" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_0b09628b-c043-45d1-88a8-247d0deb530b" xlink:to="loc_dei_EntityDomain_1a0c2db7-088a-46b1-b1bb-7d6281d29920" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-roles-2025.xsd#eedm"/>
  <link:definitionLink xlink:role="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_CEPReservesIncMember_044a404e-dec7-404e-a418-5c28c603363e" xlink:href="ppl-20250630.xsd#ppl_CEPReservesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain" xlink:to="loc_ppl_CEPReservesIncMember_044a404e-dec7-404e-a418-5c28c603363e" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_ppl_PurchasedPowerAndGas_b39929b4-058a-4021-86cd-e4e7f2d9ff3e" xlink:href="ppl-20250630.xsd#ppl_PurchasedPowerAndGas"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementAbstract" xlink:to="loc_ppl_PurchasedPowerAndGas_b39929b4-058a-4021-86cd-e4e7f2d9ff3e" xlink:type="arc" order="691"/>
  </link:definitionLink>
</link:linkbase>
