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

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2022 Workiva-->
<!--r:585b5d05-b811-4fc2-8d51-c747ab33ba37,g:874b31f3-d1ed-4ae8-b413-e21c3a7862ec-->
<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://opalfuels.com/role/Cover" xlink:type="simple" xlink:href="opal-20221215.xsd#Cover"/>
  <link:definitionLink xlink:role="http://opalfuels.com/role/Cover" xlink:type="extended" id="i30d600161c094175ae61ad0ad2a40781_Cover">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_139a029a-e987-452f-a5f4-f66c55e2ff83" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_DocumentType_139a029a-e987-452f-a5f4-f66c55e2ff83" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_e11a533a-a161-49df-83b6-1a7f0ccadeb4" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_DocumentPeriodEndDate_e11a533a-a161-49df-83b6-1a7f0ccadeb4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_ca13eae7-4c57-49e3-834c-1a2cb0b6785f" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_EntityRegistrantName_ca13eae7-4c57-49e3-834c-1a2cb0b6785f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_0b240b3a-9fbb-4481-a1ac-f54b27314222" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_EntityIncorporationStateCountryCode_0b240b3a-9fbb-4481-a1ac-f54b27314222" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_5eca135c-d85c-4ffa-b70a-d562370b2951" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_EntityFileNumber_5eca135c-d85c-4ffa-b70a-d562370b2951" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_9ce8037a-f95d-45b8-9b14-f99dd65653b1" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_EntityTaxIdentificationNumber_9ce8037a-f95d-45b8-9b14-f99dd65653b1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_aadae583-cac8-42b8-bae0-e2b17bf6ace9" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_EntityAddressAddressLine1_aadae583-cac8-42b8-bae0-e2b17bf6ace9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_9fd431a5-6eb6-4e2c-97d1-960b8c464875" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressAddressLine2"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_EntityAddressAddressLine2_9fd431a5-6eb6-4e2c-97d1-960b8c464875" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_90149092-8d31-4f7d-82fe-e8d8f1fd8191" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_EntityAddressCityOrTown_90149092-8d31-4f7d-82fe-e8d8f1fd8191" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_5100bba5-a363-4fdd-87ab-e1ecbd81a2d5" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_EntityAddressStateOrProvince_5100bba5-a363-4fdd-87ab-e1ecbd81a2d5" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_afd368b7-0f30-4411-af6b-074d0de096b6" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_EntityAddressPostalZipCode_afd368b7-0f30-4411-af6b-074d0de096b6" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_36d20489-eefe-4844-afb5-72b4a8aad8ef" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_CityAreaCode_36d20489-eefe-4844-afb5-72b4a8aad8ef" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_decaee80-65cd-45bb-b6d8-7ff5f6d9651d" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_LocalPhoneNumber_decaee80-65cd-45bb-b6d8-7ff5f6d9651d" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_5a095fe5-cc92-456a-b13e-1548af3625d9" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_WrittenCommunications"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_WrittenCommunications_5a095fe5-cc92-456a-b13e-1548af3625d9" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_c45c93a5-24a0-4db5-aa32-8f955bf2717e" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_SolicitingMaterial"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_SolicitingMaterial_c45c93a5-24a0-4db5-aa32-8f955bf2717e" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_19649777-77a4-4c09-8373-f9f6ab879878" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_PreCommencementTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_PreCommencementTenderOffer_19649777-77a4-4c09-8373-f9f6ab879878" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_631f8b1c-6e1f-45a9-bf86-3c59e419c46c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_631f8b1c-6e1f-45a9-bf86-3c59e419c46c" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_fdbcbade-72b4-4dc4-ac2b-835a93217967" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_Security12bTitle_fdbcbade-72b4-4dc4-ac2b-835a93217967" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_e9329b6a-754d-43b7-99be-fe69c6578181" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_TradingSymbol_e9329b6a-754d-43b7-99be-fe69c6578181" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_8fa4eccb-bdfc-46a7-9893-caa8646f9ab5" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_SecurityExchangeName_8fa4eccb-bdfc-46a7-9893-caa8646f9ab5" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_300e598a-e4b2-4eeb-b279-a0bd1b988444" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_EntityEmergingGrowthCompany_300e598a-e4b2-4eeb-b279-a0bd1b988444" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityExTransitionPeriod_ef665e1a-f11f-4498-8b48-7090c2dc3e91" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityExTransitionPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_EntityExTransitionPeriod_ef665e1a-f11f-4498-8b48-7090c2dc3e91" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_cbf20072-8bbf-4d60-84df-a5943ad12ed8" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_EntityCentralIndexKey_cbf20072-8bbf-4d60-84df-a5943ad12ed8" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_f1ccac8c-70fe-4e94-bfdc-063d96bf4bea" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_AmendmentFlag_f1ccac8c-70fe-4e94-bfdc-063d96bf4bea" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_15b1a1a9-79f7-45a9-961a-95d0c5990cdb" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_c2d8cf42-c070-463a-970d-ed55c660ddfa" xlink:to="loc_dei_DocumentInformationTable_15b1a1a9-79f7-45a9-961a-95d0c5990cdb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_e7d32947-de73-4992-bad7-95133f1f2828" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_15b1a1a9-79f7-45a9-961a-95d0c5990cdb" xlink:to="loc_us-gaap_StatementClassOfStockAxis_e7d32947-de73-4992-bad7-95133f1f2828" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_e7d32947-de73-4992-bad7-95133f1f2828_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_e7d32947-de73-4992-bad7-95133f1f2828" xlink:to="loc_us-gaap_ClassOfStockDomain_e7d32947-de73-4992-bad7-95133f1f2828_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_e845638b-d572-43eb-870f-90d547f1d531" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_e7d32947-de73-4992-bad7-95133f1f2828" xlink:to="loc_us-gaap_ClassOfStockDomain_e845638b-d572-43eb-870f-90d547f1d531" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_904566b4-9990-4aef-9cf3-f69a6f7881e2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_e845638b-d572-43eb-870f-90d547f1d531" xlink:to="loc_us-gaap_CommonClassAMember_904566b4-9990-4aef-9cf3-f69a6f7881e2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_b7f7196e-86e3-4cb6-958f-b65e89c6c567" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WarrantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_e845638b-d572-43eb-870f-90d547f1d531" xlink:to="loc_us-gaap_WarrantMember_b7f7196e-86e3-4cb6-958f-b65e89c6c567" xlink:type="arc" order="1"/>
  </link:definitionLink>
</link:linkbase>
