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        <ExplanationTxt>BREAKTHROUGH ENERGY MAINTAINS RECORDS INCLUDING GRANT PROPOSALS AND OTHER INFORMATION USED TO EVALUATE GRANTEES, GRANT AGREEMENTS, REPORTS FROM GRANTEES ON THEIR USE OF FUNDS AND PROJECT STATUS, AND FOLLOW-UP INFORMATION OBTAINED WHILE INVESTIGATING ANY AT-RISK GRANTS. BREAKTHROUGH ENERGY'S SELECTION PROCESS MAY VARY, BUT IN ANY EVENT THE ORGANIZATION WILL ONLY MAKE A GRANT UPON A WRITTEN DETERMINATION THAT THE RECIPIENT IS A SUITABLE GRANTEE AND THE GRANT WILL FURTHER THE ORGANIZATION'S CHARITABLE PURPOSES. IF BREAKTHROUGH ENERGY RECEIVES INFORMATION INDICATING THAT A DIVERSION OF GRANT FUNDS HAS TAKEN PLACE, BREAKTHROUGH ENERGY WILL WITHHOLD ANY FURTHER FUNDS AND WILL INVESTIGATE. IF BREAKTHROUGH ENERGY DETERMINES THAT A DIVERSION OCCURRED, IT WILL TAKE APPROPRIATE STEPS TO SECURE REPAYMENT AND WITHHOLD FUTURE PAYMENTS UNTIL IT IS SATISFIED FUTURE DIVERSIONS WON'T OCCUR AND THE GRANTEE IS TAKING APPROPRIATE PRECAUTIONS.</ExplanationTxt>
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        <ExplanationTxt>advocating for policies that speed innovation from lab to market. Through investment vehicles, philanthropic programs, policy and advocacy efforts, and other initiatives, Breakthrough Energy works with a global network of partners to accelerate the technologies we need to build a carbon-free economy.</ExplanationTxt>
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        <FormAndLineReferenceDesc>Form 990, Part VI, Line 11b Review of form 990 by governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>THE DRAFT RETURN IS REVIEWED BY THE FINANCE AND LEGAL FUNCTIONS AND APPROVED BY THE SECRETARY AND TREASURER. A FINAL VERSION OF THE FORM IS PROVIDED TO THE BOARD AFTER FILING WITH THE IRS.</ExplanationTxt>
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        <ExplanationTxt>THE CONFLICT OF INTEREST POLICY APPLIES TO DIRECTORS, OFFICERS AND KEY EMPLOYEES. THEY ARE REQUIRED TO DISCLOSE POTENTIAL CONFLICTS WITH RESPECT TO ANY TRANSACTION TO THE BOARD OF DIRECTORS, OR A COMMITTEE THEREOF, WHICH DETERMINES IF THERE IS A CONFLICT. IF THERE IS A CONFLICT, THE PERSON WITH THE CONFLICT MUST REFRAIN FROM ATTEMPTING TO INFLUENCE DECISIONS REGARDING THE TRANSACTION AND IS NOT PERMITTED TO PARTICIPATE IN DISCUSSIONS OF THE TRANSACTION EXCEPT TO RESPOND TO REQUESTS FOR INFORMATION ABOUT THE TRANSACTION. DIRECTORS, OFFICERS AND KEY EMPLOYEES ARE REQUIRED TO ANNUALLY COMPLETE STATEMENTS DISCLOSING FAMILY MEMBERS AND RELATED ENTITIES WHO MAY DO BUSINESS WITH THE ORGANIZATION. THESE STATEMENTS ARE REVIEWED BY THE ORGANIZATION'S LEGAL COUNSEL AND ARE AVAILABLE FOR INSPECTION BY MEMBERS OF THE BOARD OF DIRECTORS.</ExplanationTxt>
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        <EIN>874431675</EIN>
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        <LegalDomicileStateCd>DE</LegalDomicileStateCd>
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        <EIN>981758246</EIN>
        <PrimaryActivitiesTxt>FINANCIAL VEHICLE</PrimaryActivitiesTxt>
        <LegalDomicileForeignCountryCd>LU</LegalDomicileForeignCountryCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>BREAKTHROUGH ENERGY CATALYST FOUNDATION</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C Corporation</EntityTypeTxt>
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        <ShareOfEOYAssetsAmt>0</ShareOfEOYAssetsAmt>
        <OwnershipPct>1</OwnershipPct>
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      </IdRelatedOrgTxblCorpTrGrp>
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      <GiftGrntOrCapContriToOthOrgInd>true</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>false</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>false</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>false</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>false</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>false</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>false</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>false</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>