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        <PersonNm>MR EDWARD C ANDERSON JR</PersonNm>
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        <PersonNm>DR ROBERT ARMSTRONG</PersonNm>
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        <PersonNm>MS REACHEL BEICHLEY</PersonNm>
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        <PersonNm>DR DEAN GRAY</PersonNm>
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        <PersonNm>MR TODD HARRINGTON</PersonNm>
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        <PersonNm>DR MASSIMO RUZZENE</PersonNm>
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        <PersonNm>MR MATT VAUGHAN</PersonNm>
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        <PersonNm>MS KRISTINE WERKING</PersonNm>
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        <PersonNm>DR WILLIAM JEFFREY</PersonNm>
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      <OtherChangesInNetAssetsAmt>-7518591</OtherChangesInNetAssetsAmt>
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      <FSAuditedInd>true</FSAuditedInd>
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      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
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        <CurrentTaxYearAmt>786152855</CurrentTaxYearAmt>
        <TotalAmt>3100774907</TotalAmt>
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        <CurrentTaxYearAmt>179124</CurrentTaxYearAmt>
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    </IRS990ScheduleA>
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          <AddressLine2>RESTRICTED</AddressLine2>
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          <State>RESTRICTED</State>
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      <TotLbbyngGrassrootMnsNonTxGrp />
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      <Form4720FiledInd>false</Form4720FiledInd>
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        <CurrentYearMinus2Amt>1000000</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>1000000</CurrentYearMinus1Amt>
        <CurrentYearAmt>1000000</CurrentYearAmt>
        <TotalAmt>4000000</TotalAmt>
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      <AvgGrassrootsNontaxableGrp>
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        <CurrentYearMinus2Amt>250000</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>250000</CurrentYearMinus1Amt>
        <CurrentYearAmt>250000</CurrentYearAmt>
        <TotalAmt>1000000</TotalAmt>
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      <GrassrootsCeilingAmt>1500000</GrassrootsCeilingAmt>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="IRS990ScheduleD">
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D, PART X, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>UNCERTAIN TAX POSITIONS: MANAGEMENT HAS EVALUATED THEIR INCOME TAX POSITIONS UNDER THE GUIDANCE INCLUDED IN ASC 740. BASED ON THEIR REVIEW, MANAGEMENT HAS NOT IDENTIFIED ANY MATERIAL UNCERTAIN TAX POSITIONS TO BE RECORDED OR DISCLOSED IN THE FINANCIAL STATEMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
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        <SpecificServicesProvidedTxt>SEE ATTACHED</SpecificServicesProvidedTxt>
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      <AccountActivitiesOutsideUSGrp>
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        <SpecificServicesProvidedTxt>SEE ATTACHED</SpecificServicesProvidedTxt>
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      <SupplementalInformationDetail>
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        <ExplanationTxt>ASIA: ONE EMPLOYEE WORKED 50% FOR ALLIANCE AND 50% AS A VISITING PROFESSOR AT KYUSHU UNIVERSITY IN JAPAN. THE EMPLOYEE PARTICIPATED IN A SPEAKER SERIES ON GLOBAL ENERGY GOALS AND CHALLENGES IN REACHING 100% RENEWABLE/CLEAN ENERGY. ONE EMPLOYEE PARTICIPATED IN MEETINGS AND TRAINING SESSIONS SUPPORTING THAILAND'S NET ZERO WORLD ACTIVITIES. EUROPE: ONE EMPLOYEE WORKED 50% FOR ALLIANCE AND 50% AS A VISITING SCIENTIST AT THE ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL) LABORATORIES IN SWITZERLAND. THE EMPLOYEE'S ALLIANCE/NREL WORK WAS RESEARCH WORK IN SILICO. ONE EMPLOYEE WORKED 10% FOR ALLIANCE RESEARCHING AND COLLABORATING WITH PERSONNEL AT THE UNIVERSITY OF COMILLAS IN SPAIN ON THE CAPABILITY OF RNM-US TO CREATE UTILITY MODELS IN AREAS OF LIMITED AVAILABLE DATA. SOUTH AMERICA: ONE EMPLOYEE WORKED 50% FOR ALLIANCE AND 50% AS A VISITING PROFESSOR AT THE UNIVERSITY OF MEDELLIN IN COLOMBIA. THE EMPLOYEE'S ALLIANCE/NREL WORK WAS RESEARCH WORK IN WIND AND SOLAR RESOURCE ASSESSMENT AND TECHNICAL POTENTIAL MODELING AND PARTICIPATING IN SEMINARS AND TRAININGS IN THIS FIELD OF STUDY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE F, PART I, LINE 3, COLUMN (F)</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION OF ACCOUNTING METHOD: ALLIANCE FOR SUSTAINABLE ENERGY USES THE ACCRUAL ACCOUNTING METHOD FOR AMOUNTS ENTERED IN SCHEDULE F, PART I, LINE 3 COLUMN (F).</ExplanationTxt>
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    </IRS990ScheduleF>
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          <CityNm>DENVER</CityNm>
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      <RecipientTable>
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          <BusinessNameLine1Txt>NREL FOUNDATION</BusinessNameLine1Txt>
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          <AddressLine1Txt>601 16TH ST SUITE C452</AddressLine1Txt>
          <CityNm>GOLDEN</CityNm>
          <StateAbbreviationCd>CO</StateAbbreviationCd>
          <ZIPCd>80401</ZIPCd>
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      <RecipientTable>
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          <BusinessNameLine1Txt>THE ACTION CENTER</BusinessNameLine1Txt>
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          <AddressLine1Txt>8745 W 14TH AVE</AddressLine1Txt>
          <CityNm>LAKEWOOD</CityNm>
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      <RecipientTable>
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          <CityNm>DENVER</CityNm>
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        <PurposeOfGrantTxt>SUPPORT ORGANIZATION</PurposeOfGrantTxt>
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      <RecipientTable>
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          <BusinessNameLine1Txt>DENVER PUBLIC SCHOOLS</BusinessNameLine1Txt>
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          <CityNm>DENVER</CityNm>
          <StateAbbreviationCd>CO</StateAbbreviationCd>
          <ZIPCd>80203</ZIPCd>
        </USAddress>
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        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
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        <PurposeOfGrantTxt>SUPPORT ORGANIZATION</PurposeOfGrantTxt>
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      <RecipientTable>
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          <CityNm>BOULDER</CityNm>
          <StateAbbreviationCd>CO</StateAbbreviationCd>
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        </USAddress>
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        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
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        <PurposeOfGrantTxt>SUPPORT ORGANIZATION</PurposeOfGrantTxt>
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      <RecipientTable>
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          <BusinessNameLine1Txt>DENVER METRO CHAMBER OF COMMERCE</BusinessNameLine1Txt>
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          <CityNm>DENVER</CityNm>
          <StateAbbreviationCd>CO</StateAbbreviationCd>
          <ZIPCd>80202</ZIPCd>
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        <RecipientEIN>840186760</RecipientEIN>
        <IRCSectionDesc>501(C)(6)</IRCSectionDesc>
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        <PurposeOfGrantTxt>SUPPORT ORGANIZATION</PurposeOfGrantTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE I, PART I, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION FOR MONITORING GRANTS: ALLIANCE HAS A CONTINUING RELATIONSHIP WITH VARIOUS LOCAL CHARITABLE, EDUCATIONAL, AND CIVIC ORGANIZATIONS. PRIOR TO PROVIDING DONATIONS, THE ORGANIZATIONS ARE IDENTIFIED AS NON-PROFIT ORGANIZATIONS IN GOOD FINANCIAL AND NON-PROFIT STANDING. THE ENTITIES PROVIDE INFORMATION TO THE PUBLIC AND ALLIANCE ON THE GOOD BEING ACCOMPLISHED THROUGH DONATIONS LIKE THOSE FROM ALLIANCE.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
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      <WrittenEmploymentContractInd>X</WrittenEmploymentContractInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>false</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>false</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>false</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>false</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>false</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>false</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>false</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>true</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>false</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DR MARTIN KELLER</PersonNm>
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        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>887128</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MR JOHN STOLPA</PersonNm>
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        <TotalCompensationFilingOrgAmt>400861</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DR PETER GREEN</PersonNm>
        <TitleTxt>SENIOR VICE PRESIDENT</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
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        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>9212</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>24798</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>627867</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MS JULIE BAKER</PersonNm>
        <TitleTxt>SENIOR VICE PRESIDENT</TitleTxt>
        <BaseCompensationFilingOrgAmt>376902</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>189767</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>59939</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>-17832</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>31778</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>640554</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DR JOHNEY GREEN</PersonNm>
        <TitleTxt>ASSOCIATE LAB DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>343553</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>121059</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>21628</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>-19411</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>32222</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>499051</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MR WILLIAM FARRIS</PersonNm>
        <TitleTxt>ASSOCIATE LAB DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>298785</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>113573</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>54675</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>-41448</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>25547</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>451132</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MR JUAN TORRES</PersonNm>
        <TitleTxt>ASSOCIATE LAB DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>327703</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>120369</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>35596</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>-3517</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>10965</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>491116</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DR WILLIAM TUMAS</PersonNm>
        <TitleTxt>ASSOCIATE LAB DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>337798</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>117932</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>22202</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>-23586</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>23598</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>477944</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MS JENNIFER LOGAN</PersonNm>
        <TitleTxt>CFO</TitleTxt>
        <BaseCompensationFilingOrgAmt>145289</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>92443</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>127662</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>17143</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>14747</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>397284</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MS CHRISTINE HERRERA</PersonNm>
        <TitleTxt>CHIEF HR OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>258037</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>92642</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>123372</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>30823</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>26449</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>531323</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE J, PART I, LINE 7</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ALLIANCE'S INCENTIVE PROGRAM INCLUDES TWO PLANS AND MULTIPLE TIERS WITHIN EACH PLAN. THESE TIERS ARE TARGETED TO SPECIFIC JOB TITLES, WITH EACH FEATURING A TARGET INCENTIVE AS A PERCENTAGE OF BASE PAY. PAYOUTS ARE BASED ON TWO FACTORS: EACH PARTICIPANT'S INDIVIDUAL PERFORMANCE AND THE LAB'S OVERALL PERFORMANCE.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 1A</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION IN DIFFERENCE OF VOTING RIGHTS: ALLIANCE FOR SUSTAINABLE ENERGY HAS 15 BOARD MEMBERS 5 ARE ELECTED BY MRIGLOBAL, 5 BY BATTELLE &amp; 5 CORE UNIVERSITY MEMBERS. ALL BOARD MEMBERS CAN VOTE ON GENERAL BUSINESS AND POLICY MATTERS. MRIGLOBAL AND BATTELLE BOARD MEMBERS ARE THE ONLY MEMBERS THAT CAN VOTE ON ECONOMIC AND OTHER INTERESTS IN THE COMPANY AND OR THE MEMBERS' BUSINESS REPUTATIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIBE CIRCUMSTANCES FOR HAVING MEMBERS: ALLIANCE FOR SUSTAINBLE ENERGY HAS TWO MEMBERS: - MRIGLOBAL - BATTELLE MEMORIAL INSTITUTE</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBERS WHO CAN ELECT MEMBERS OF THE GOVERNING BODY: EACH MEMBER HAS THE RIGHT TO NOMINATE AND ELECT 5 MEMBER DIRECTORS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>DECISIONS OF GOVERNING BODY SUBJECT TO APPROVAL BY MEMBERS: THE MEMBERS HAVE THE RIGHT TO AMEND AND APPROVE THE OPERATING AGREEMENT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION OF PROCESS FOR REVIEWING 990: 1. CONTROLLER REVIEWS THE DRAFT 990 AND SENDS TO THE FINANCE AND AUDIT COMMITTEE (FAC) MEMBERS FOR REVIEW. 2. FAC REVIEW THE DRAFT 990 AND EACH APPROVES THE 990 FOR FILING. 3. THE DRAFT 990 IS POSTED ON THE BOARD SITE FOR THREE BUSINESS DAYS. IF NO COMMENTS OR EDITS ARE RECEIVED, THE 990 IS FILED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION OF PROCESS FOR MONITORING CONFLICT OF INTEREST POLICY: ALL ALLIANCE EMPLOYEES ARE REQUIRED TO ATTEND ETHICS TRAINING WHICH PERIODICALLY INCLUDES THE PROCESS FOR IDENTIFICATION AND DISCLOSURE OF CONFLICTS OF INTEREST. EMPLOYEES ARE REQUIRED TO FILE A WRITTEN DISCLOSURE STATEMENT CONCERNING OUTSIDE ACTIVITIES AND/OR ACTUAL OR POTENTIAL CONFLICTS OF INTEREST BETWEEN THE EMPLOYEE'S WORK AND PERSONAL, FINANCIAL, OR ALLIANCE FOR SUSTAINABLE ENERGY, LLC 26-1939342 BUSINESS INTERESTS. THE EMPLOYEE'S COGNIZANT LINE MANAGEMENT IS RESPONSIBLE FOR THE REVIEW AND APPROVAL OF EMPLOYEE REQUESTS FOR APPROVAL OF OUTSIDE ACTIVITIES WHICH ARE OF CONCERN TO ALLIANCE. EMPLOYEES WHOSE REGULAR RESPONSIBILITIES INVOLVE MANAGING OR EXECUTING LICENSE AGREEMENTS FOR INTELLECTUAL PROPERTY OR THE PREPARATION OR EXECUTION OF COOPERATIVE RESEARCH AND DEVELOPMENT AGREEMENTS (CRADAS) OR OTHER TECHNOLOGY TRANSFER OR TECHNOLOGY PARTNERSHIP ARRANGEMENTS MUST ANNUALLY OR UPON CHANGES IN RELEVANT PERSONAL OR FAMILY CIRCUMSTANCES OR THE NATURE OF WORK ASSIGNED, COMPLETE AN EMPLOYEE'S STATEMENT OF ECONOMIC INTEREST. IF AN ACTUAL OR POTENTIAL CONFLICT OF INTEREST EXISTS, THE EMPLOYEE CONSULTS WITH THE GENERAL COUNSEL OR DESIGNEE TO IDENTIFY AND IMPLEMENT MITIGATION OR AVOIDANCE ACTIONS, OR RECUSES SELF IF AN APPROPRIATE MITIGATION OR AVOIDANCE ACTION CANNOT BE IDENTIFIED. ALL ALLIANCE OFFICERS AND BOARD OF DIRECTOR MEMBERS ARE REQUIRED TO SUBMIT A CONFLICT OF INTEREST DISCLOSURE UPON APPOINTMENT, AND AN ANNUAL CONFLICT OF INTEREST DISCLOSURE AND RECEIVE ANNUAL ORGANIZATIONAL CONFLICTS OF INTEREST TRAINING. THE ALLIANCE BOARD OF DIRECTORS USES DISCLOSURE STATEMENTS TO DETERMINE IF A CONFLICT OF INTEREST EXISTS. IF SO, THE BOARD OF DIRECTORS IMPLEMENTS AVOIDANCE OR MITIGATION ACTIONS AND ANY DIRECTOR OR OFFICER MAY NOT TAKE PART IN DISCUSSION OR VOTING ON MATTERS RELATED TO A DISCLOSED INTEREST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15A &amp; 15B</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION OF PRESIDENT AND OTHER OFFICER COMPENSATION PROCESS: GOVERNANCE OF EXECUTIVE COMPENSATION IS CHARTERED THROUGH THE ALLIANCE HUMAN RESOURCES COMPENSATION COMMITTEE. EXTERNAL THIRD PARTY RESOURCES ARE RETAINED ON A BIENNIAL BASIS TO REVIEW ALL ELEMENTS OF EXECUTIVE REMUNERATION (BASE SALARY, ANNUAL INCENTIVES, RETIREMENT BENEFITS, HEALTH AND WELFARE BENEFITS, AND EXECUTIVE PREREQUISITES) TO INSURE COMPETITIVENESS OF ALL THE ELEMENTS OF CASH COMPENSATION RELATIVE TO THE MARKET FOR BOTH BASE COMPENSATION AND TOTAL COMPENSATION. THERE ARE NO PERSONS SERVING ON THE COMPENSATION COMMITTEE WITH A CONFLICT OF INTEREST WITH RESPECT TO THE COMPENSATION ARRANGEMENTS. CONTEMPORANEOUS DOCUMENTATION AND RECORDS ARE RETAINED. THE LAST COMPENSATION REVIEW OCCURRED IN 2023 BY MERCER.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION OF GOVERNING DOCUMENTS MADE AVAILABLE TO THE PUBLIC: ALLIANCE MAKES ITS GOVERNING DOCUMENTS AND CONFLICT OF INTEREST POLICY AVAILABLE TO THE PUBLIC UPON REQUEST. ALLIANCE DOES NOT PROVIDE FINANCIAL STATEMENTS TO THE PUBLIC. AS A FEDERALLY FUNDED RESEARCH AND DEVELOPMENT CENTER FOR THE U.S. DEPARTMENT OF ENERGY, ALLIANCE FOR SUSTAINABLE ENERGY, LLC ONLY PROVIDES FINANCIAL STATEMENTS TO THE FEDERAL AGENCY FUNDING THE PROJECT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, PART XI, LINE 9, CHANGES IN NET ASSETS</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION OF OTHER CHANGE IN NET ASSETS: (7,518,591) - DISTRIBUTION TO MEMBERS</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>
