﻿<?xml version="1.0" encoding="utf-8"?>
<Return returnVersion="2017v2.0" xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2018-08-03T15:22:16-07:00</ReturnTs>
    <TaxPeriodEndDt>2017-12-31</TaxPeriodEndDt>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2017-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>383321875</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>GREAT LAKES ENERGY COOPERATIVE</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>GREA</BusinessNameControlTxt>
      <PhoneNum>2315826521</PhoneNum>
      <USAddress>
        <AddressLine1Txt>PO Box 70</AddressLine1Txt>
        <CityNm>Boyne City</CityNm>
        <StateAbbreviationCd>MI</StateAbbreviationCd>
        <ZIPCd>49712</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>Stephen Drake</PersonNm>
      <PersonTitleTxt>VP, CFO</PersonTitleTxt>
      <PhoneNum>2315826521</PhoneNum>
      <SignatureDt>2018-08-03</SignatureDt>
    </BusinessOfficerGrp>
    <TaxYr>2017</TaxYr>
    <BuildTS>2022-09-23 18:48:47Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="5">
    <IRS990 documentId="R000001" referenceDocumentId="R000005" softwareId="17005980" softwareVersionNum="v1.00">
      <PrincipalOfficerNm>William M Scott</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>1323 Boyne Avenue</AddressLine1Txt>
        <CityNm>Boyne City</CityNm>
        <StateAbbreviationCd>MI</StateAbbreviationCd>
        <ZIPCd>49712</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>197882748</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>0</GroupReturnForAffiliatesInd>
      <Organization501cInd organization501cTypeTxt="12">X</Organization501cInd>
      <WebsiteAddressTxt>www.gtlakes.com</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>1998</FormationYr>
      <LegalDomicileStateCd>MI</LegalDomicileStateCd>
      <ActivityOrMissionDesc>Provide electric service to members.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>9</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>9</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>257</TotalEmployeeCnt>
      <TotalVolunteersCnt>0</TotalVolunteersCnt>
      <TotalGrossUBIAmt>80344</TotalGrossUBIAmt>
      <NetUnrelatedBusTxblIncmAmt>77845</NetUnrelatedBusTxblIncmAmt>
      <PYContributionsGrantsAmt>0</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>0</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>192754550</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>195501031</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>2024771</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>2347431</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>34748</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>33673</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>194814069</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>197882135</CYTotalRevenueAmt>
      <PYGrantsAndSimilarPaidAmt>0</PYGrantsAndSimilarPaidAmt>
      <CYGrantsAndSimilarPaidAmt>0</CYGrantsAndSimilarPaidAmt>
      <PYBenefitsPaidToMembersAmt>10488998</PYBenefitsPaidToMembersAmt>
      <CYBenefitsPaidToMembersAmt>10480453</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>1231525</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>1075680</CYSalariesCompEmpBnftPaidAmt>
      <PYTotalProfFndrsngExpnsAmt>0</PYTotalProfFndrsngExpnsAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>0</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>183093546</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>186326002</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>194814069</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>197882135</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>0</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>0</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>487956364</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>491870160</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>297183194</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>297250233</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>190773170</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>194619927</NetAssetsOrFundBalancesEOYAmt>
      <MissionDesc>The mission of Great Lakes Energy Cooperative is to deliver reliable electric service at the best possible value to members of the electric cooperative.</MissionDesc>
      <SignificantNewProgramSrvcInd>0</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>0</SignificantChangeInd>
      <ExpenseAmt>197882135</ExpenseAmt>
      <GrantAmt>0</GrantAmt>
      <RevenueAmt>195501013</RevenueAmt>
      <Desc>Provide electric service to member/customers - approximately 125,000 member/customers.</Desc>
      <TotalOtherProgSrvcExpenseAmt>0</TotalOtherProgSrvcExpenseAmt>
      <TotalOtherProgSrvcGrantAmt>0</TotalOtherProgSrvcGrantAmt>
      <TotalOtherProgSrvcRevenueAmt>0</TotalOtherProgSrvcRevenueAmt>
      <TotalProgramServiceExpensesAmt>197882135</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind>0</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd>0</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>0</PoliticalCampaignActyInd>
      <SubjectToProxyTaxInd>0</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd>0</DonorAdvisedFundInd>
      <ConservationEasementsInd>0</ConservationEasementsInd>
      <CollectionsOfArtInd>0</CollectionsOfArtInd>
      <CreditCounselingInd>0</CreditCounselingInd>
      <TempOrPermanentEndowmentsInd>0</TempOrPermanentEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="R000002">1</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd>0</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd referenceDocumentId="R000002">1</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd>0</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="R000002">1</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="R000002">1</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="R000002">1</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="R000002">0</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>0</SchoolOperatingInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <ForeignActivitiesInd>0</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>0</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>0</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>0</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>0</FundraisingActivitiesInd>
      <GamingActivitiesInd>0</GamingActivitiesInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <GrantsToOrganizationsInd>0</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd>0</GrantsToIndividualsInd>
      <ScheduleJRequiredInd referenceDocumentId="R000003">1</ScheduleJRequiredInd>
      <TaxExemptBondsInd>0</TaxExemptBondsInd>
      <LoanOutstandingInd>0</LoanOutstandingInd>
      <GrantToRelatedPersonInd>0</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>0</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>0</BusinessRlnWithFamMemInd>
      <BusinessRlnWithOfficerEntInd referenceDocumentId="R000004">1</BusinessRlnWithOfficerEntInd>
      <DeductibleNonCashContriInd>0</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>0</DeductibleArtContributionInd>
      <TerminateOperationsInd>0</TerminateOperationsInd>
      <PartialLiquidationInd>0</PartialLiquidationInd>
      <DisregardedEntityInd>0</DisregardedEntityInd>
      <RelatedEntityInd>0</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>0</RelatedOrganizationCtrlEntInd>
      <ActivitiesConductedPrtshpInd>0</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>1</ScheduleORequiredInd>
      <IRPDocumentCnt>137</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <BackupWthldComplianceInd>1</BackupWthldComplianceInd>
      <EmployeeCnt>257</EmployeeCnt>
      <EmploymentTaxReturnsFiledInd>1</EmploymentTaxReturnsFiledInd>
      <UnrelatedBusIncmOverLimitInd>1</UnrelatedBusIncmOverLimitInd>
      <Form990TFiledInd>1</Form990TFiledInd>
      <ForeignFinancialAccountInd>0</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>0</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>0</NondeductibleContributionsInd>
      <MembersAndShrGrossIncomeAmt>185962240</MembersAndShrGrossIncomeAmt>
      <OtherSourcesGrossIncomeAmt>11919895</OtherSourcesGrossIncomeAmt>
      <IndoorTanningServicesInd>0</IndoorTanningServicesInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>9</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>9</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>0</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>0</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>0</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>0</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>1</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>1</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>1</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>1</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>1</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>0</OfficerMailingAddressInd>
      <LocalChaptersInd>0</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>1</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>1</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>1</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>1</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>1</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>1</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>1</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>1</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>0</InvestmentInJointVentureInd>
      <StatesWhereCopyOfReturnIsFldCd>MI</StatesWhereCopyOfReturnIsFldCd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <PersonNm>Stephen F Drake</PersonNm>
        <PhoneNum>2315826521</PhoneNum>
        <USAddress>
          <AddressLine1Txt>PO Box 70</AddressLine1Txt>
          <CityNm>Boyne City</CityNm>
          <StateAbbreviationCd>MI</StateAbbreviationCd>
          <ZIPCd>49712</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <InfoInScheduleOPartVIIInd>X</InfoInScheduleOPartVIIInd>
      <Form990PartVIISectionAGrp>
        <PersonNm>MARK CARSON</PersonNm>
        <TitleTxt>CHAIRMAN</TitleTxt>
        <AverageHoursPerWeekRt>9.9</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>37200</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>PAUL BYL</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHoursPerWeekRt>9.2</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>24700</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>2726</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>LAURENCE MONSHOR</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHoursPerWeekRt>9.2</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>35800</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>RIC EVANS</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>10.4</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>36500</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>PAUL SCHEMANSKI</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>8.4</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>35700</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>TIMOTHY BRECHON</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>6.2</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>35350</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOHN LAFORGE</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>8.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>33200</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DALE FARRIER</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>7.8</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>28600</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>2436</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ROBERT KRAN</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>9.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>28600</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>WILLIAM SCOTT</PersonNm>
        <TitleTxt>PRES, CHIEF EXECUTIVE OFFICER</TitleTxt>
        <AverageHoursPerWeekRt>55.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>405742</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>139884</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>STEPHEN DRAKE</PersonNm>
        <TitleTxt>VP, CHIEF FINANCIAL OFFICER</TitleTxt>
        <AverageHoursPerWeekRt>55.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>220190</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>105296</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>PATRICK ANZELL</PersonNm>
        <TitleTxt>VP, MEMBER SERVICES/REG. AFFAIRS &amp; PURCHASING</TitleTxt>
        <AverageHoursPerWeekRt>55.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>225158</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>125447</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JENNIFER WILSON</PersonNm>
        <TitleTxt>VP, HUMAN RESOURCES</TitleTxt>
        <AverageHoursPerWeekRt>55.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>224068</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>84155</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SHARI CULVER</PersonNm>
        <TitleTxt>VP, COMM/MARKETING</TitleTxt>
        <AverageHoursPerWeekRt>55.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>220018</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>79214</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SHAUN LAMP</PersonNm>
        <TitleTxt>VP, INFORMATION TECHNOLOGY</TitleTxt>
        <AverageHoursPerWeekRt>55.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>202966</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>58805</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SCOTT BLECKE</PersonNm>
        <TitleTxt>VP, Engineering</TitleTxt>
        <AverageHoursPerWeekRt>55.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>184705</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>45856</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>RICHARD WALSWORTH</PersonNm>
        <TitleTxt>FORMER DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>0.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <FormerOfcrDirectorTrusteeInd>X</FormerOfcrDirectorTrusteeInd>
        <ReportableCompFromOrgAmt>13200</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ROBERT THUROW</PersonNm>
        <TitleTxt>FORMER DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>0.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <FormerOfcrDirectorTrusteeInd>X</FormerOfcrDirectorTrusteeInd>
        <ReportableCompFromOrgAmt>13200</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>2004897</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>643819</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>83</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>1</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Roemer Utility Services</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>279 Kaden</AddressLine1Txt>
            <AddressLine2Txt>PO Box 124</AddressLine2Txt>
            <CityNm>Boyne City</CityNm>
            <StateAbbreviationCd>MI</StateAbbreviationCd>
            <ZIPCd>49712</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>UG boring contractor</ServicesDesc>
        <CompensationAmt>256497</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Dykema Gossett PLLC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>400 Renaissance Center</AddressLine1Txt>
            <CityNm>Detroit</CityNm>
            <StateAbbreviationCd>MI</StateAbbreviationCd>
            <ZIPCd>49712</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Attorney</ServicesDesc>
        <CompensationAmt>162424</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>CC Unlimited LLC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>3850 Beebe Rd</AddressLine1Txt>
            <CityNm>Kalkaska</CityNm>
            <StateAbbreviationCd>MI</StateAbbreviationCd>
            <ZIPCd>49646</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Electrical distr. contractor</ServicesDesc>
        <CompensationAmt>154329</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Willey Construction LLC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>9485 Ingleside Road</AddressLine1Txt>
            <CityNm>Levering</CityNm>
            <StateAbbreviationCd>MI</StateAbbreviationCd>
            <ZIPCd>49755</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Electric utilitiy construction</ServicesDesc>
        <CompensationAmt>131484</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>4</CntrctRcvdGreaterThan100KCnt>
      <TotalContributionsAmt>0</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>Electricity sold to members</Desc>
        <BusinessCd>221000</BusinessCd>
        <TotalRevenueColumnAmt>185962240</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>185962240</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>Program related investment income</Desc>
        <BusinessCd>221000</BusinessCd>
        <TotalRevenueColumnAmt>8974559</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>8974559</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>Pole rental income</Desc>
        <BusinessCd>221000</BusinessCd>
        <TotalRevenueColumnAmt>481204</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>481204</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>Tower rental</Desc>
        <BusinessCd>221000</BusinessCd>
        <TotalRevenueColumnAmt>80344</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>80344</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>Real property rental income</Desc>
        <BusinessCd>221000</BusinessCd>
        <TotalRevenueColumnAmt>2684</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>2684</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <TotalOthProgramServiceRevGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </TotalOthProgramServiceRevGrp>
      <TotalProgramServiceRevenueAmt>195501031</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>2308168</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>2308168</ExclusionAmt>
      </InvestmentIncomeGrp>
      <IncmFromInvestBondProceedsGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </IncmFromInvestBondProceedsGrp>
      <RoyaltiesRevenueGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </RoyaltiesRevenueGrp>
      <RentalIncomeOrLossGrp>
        <RealAmt>0</RealAmt>
        <PersonalAmt>0</PersonalAmt>
      </RentalIncomeOrLossGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>0</SecuritiesAmt>
        <OtherAmt>39876</OtherAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>0</SecuritiesAmt>
        <OtherAmt>613</OtherAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>0</SecuritiesAmt>
        <OtherAmt>39263</OtherAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>39263</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>39263</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <MiscellaneousRevenueGrp>
        <TotalRevenueColumnAmt>33673</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>33673</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </MiscellaneousRevenueGrp>
      <OtherRevenueTotalAmt>33673</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>197882135</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>195009735</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>80344</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>2792056</ExclusionAmt>
      </TotalRevenueGrp>
      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <BenefitsToMembersGrp>
        <TotalAmt>10480453</TotalAmt>
      </BenefitsToMembersGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>1075680</TotalAmt>
      </CompCurrentOfcrDirectorsGrp>
      <InterestGrp>
        <TotalAmt>10415748</TotalAmt>
      </InterestGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>14245706</TotalAmt>
      </DepreciationDepletionGrp>
      <OtherExpensesGrp>
        <Desc>Purchased electric power</Desc>
        <TotalAmt>116664257</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Operating and maintenance expenses</Desc>
        <TotalAmt>26784697</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Member service expenses</Desc>
        <TotalAmt>10245497</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Administration and general expenses</Desc>
        <TotalAmt>7562111</TotalAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>407986</TotalAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>197882135</TotalAmt>
        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>6392009</BOYAmt>
        <EOYAmt>1623206</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>1297159</BOYAmt>
        <EOYAmt>1217986</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <PledgesAndGrantsReceivableGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </PledgesAndGrantsReceivableGrp>
      <AccountsReceivableGrp>
        <BOYAmt>18033521</BOYAmt>
        <EOYAmt>16935706</EOYAmt>
      </AccountsReceivableGrp>
      <ReceivablesFromOfficersEtcGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </ReceivablesFromOfficersEtcGrp>
      <RcvblFromDisqualifiedPrsnGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </RcvblFromDisqualifiedPrsnGrp>
      <OthNotesLoansReceivableNetGrp>
        <BOYAmt>424387</BOYAmt>
        <EOYAmt>219455</EOYAmt>
      </OthNotesLoansReceivableNetGrp>
      <InventoriesForSaleOrUseGrp>
        <BOYAmt>2567991</BOYAmt>
        <EOYAmt>2616270</EOYAmt>
      </InventoriesForSaleOrUseGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>7833211</BOYAmt>
        <EOYAmt>7414633</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>483040042</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>141768496</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>331234227</BOYAmt>
        <EOYAmt>341271546</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>1407871</BOYAmt>
        <EOYAmt>1621901</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <InvestmentsOtherSecuritiesGrp>
        <BOYAmt>396623</BOYAmt>
        <EOYAmt>472353</EOYAmt>
      </InvestmentsOtherSecuritiesGrp>
      <InvestmentsProgramRelatedGrp>
        <BOYAmt>116708357</BOYAmt>
        <EOYAmt>116796142</EOYAmt>
      </InvestmentsProgramRelatedGrp>
      <IntangibleAssetsGrp>
        <BOYAmt>1661008</BOYAmt>
        <EOYAmt>1680962</EOYAmt>
      </IntangibleAssetsGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>487956364</BOYAmt>
        <EOYAmt>491870160</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>29911629</BOYAmt>
        <EOYAmt>30298419</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <GrantsPayableGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </GrantsPayableGrp>
      <DeferredRevenueGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </DeferredRevenueGrp>
      <TaxExemptBondLiabilitiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </TaxExemptBondLiabilitiesGrp>
      <EscrowAccountLiabilityGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </EscrowAccountLiabilityGrp>
      <LoansFromOfficersDirectorsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </LoansFromOfficersDirectorsGrp>
      <MortgNotesPyblScrdInvstPropGrp>
        <BOYAmt>250462890</BOYAmt>
        <EOYAmt>253837991</EOYAmt>
      </MortgNotesPyblScrdInvstPropGrp>
      <UnsecuredNotesLoansPayableGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </UnsecuredNotesLoansPayableGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>16808675</BOYAmt>
        <EOYAmt>13113823</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>297183194</BOYAmt>
        <EOYAmt>297250233</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrgDoesNotFollowSFAS117Ind>X</OrgDoesNotFollowSFAS117Ind>
      <CapStkTrPrinCurrentFundsGrp>
        <BOYAmt>519740</BOYAmt>
        <EOYAmt>519740</EOYAmt>
      </CapStkTrPrinCurrentFundsGrp>
      <PdInCapSrplsLandBldgEqpFundGrp>
        <BOYAmt>5398884</BOYAmt>
        <EOYAmt>6182932</EOYAmt>
      </PdInCapSrplsLandBldgEqpFundGrp>
      <RtnEarnEndowmentIncmOthFndsGrp>
        <BOYAmt>184854546</BOYAmt>
        <EOYAmt>187917255</EOYAmt>
      </RtnEarnEndowmentIncmOthFndsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>190773170</BOYAmt>
        <EOYAmt>194619927</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>487956364</BOYAmt>
        <EOYAmt>491870160</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <InfoInScheduleOPartXIInd>X</InfoInScheduleOPartXIInd>
      <ReconcilationRevenueExpnssAmt>0</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>136774</NetUnrlzdGainsLossesInvstAmt>
      <DonatedServicesAndUseFcltsAmt>0</DonatedServicesAndUseFcltsAmt>
      <InvestmentExpenseAmt>0</InvestmentExpenseAmt>
      <PriorPeriodAdjustmentsAmt>0</PriorPeriodAdjustmentsAmt>
      <OtherChangesInNetAssetsAmt>3709983</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleD documentId="R000002" softwareId="17005980" softwareVersionNum="v1.00">
      <LandGrp>
        <InvestmentCostOrOtherBasisAmt>0</InvestmentCostOrOtherBasisAmt>
        <OtherCostOrOtherBasisAmt>756045</OtherCostOrOtherBasisAmt>
        <BookValueAmt>756045</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
        <InvestmentCostOrOtherBasisAmt>0</InvestmentCostOrOtherBasisAmt>
        <OtherCostOrOtherBasisAmt>14012743</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>5523797</DepreciationAmt>
        <BookValueAmt>8488946</BookValueAmt>
      </BuildingsGrp>
      <LeaseholdImprovementsGrp>
        <InvestmentCostOrOtherBasisAmt>0</InvestmentCostOrOtherBasisAmt>
        <OtherCostOrOtherBasisAmt>0</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>0</DepreciationAmt>
        <BookValueAmt>0</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <InvestmentCostOrOtherBasisAmt>0</InvestmentCostOrOtherBasisAmt>
        <OtherCostOrOtherBasisAmt>468271254</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>136244699</DepreciationAmt>
        <BookValueAmt>332026555</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <InvestmentCostOrOtherBasisAmt>0</InvestmentCostOrOtherBasisAmt>
        <OtherCostOrOtherBasisAmt>0</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>0</DepreciationAmt>
        <BookValueAmt>0</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>341271546</TotalBookValueLandBuildingsAmt>
      <InvstProgramRelatedOrgGrp>
        <Desc>Patronage capital from assoc. organizations</Desc>
        <BookValueAmt>112226539</BookValueAmt>
        <MethodValuationCd>C</MethodValuationCd>
      </InvstProgramRelatedOrgGrp>
      <InvstProgramRelatedOrgGrp>
        <Desc>Coop. Finance Corp., capital certificates</Desc>
        <BookValueAmt>4563878</BookValueAmt>
        <MethodValuationCd>C</MethodValuationCd>
      </InvstProgramRelatedOrgGrp>
      <InvstProgramRelatedOrgGrp>
        <Desc>Investments in other related organizations</Desc>
        <BookValueAmt>5725</BookValueAmt>
        <MethodValuationCd>C</MethodValuationCd>
      </InvstProgramRelatedOrgGrp>
      <TotalBookValueProgramRltdAmt>116796142</TotalBookValueProgramRltdAmt>
      <FederalIncomeTaxLiabilityAmt>0</FederalIncomeTaxLiabilityAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>Def. cr. - contributions in aid of construction</Desc>
        <Amt>5719091</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>Def. regulatory credits</Desc>
        <Amt>3379951</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>Post retirement benefits</Desc>
        <Amt>340075</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>Directors' post retirement benefits</Desc>
        <Amt>2058593</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>Other long-term liabilities</Desc>
        <Amt>643401</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>Deferred revenue</Desc>
        <Amt>410572</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>Deferred compensation</Desc>
        <Amt>562140</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>13113823</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>197813201</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>0</NetUnrealizedGainsInvstAmt>
      <DonatedServicesAndUseFcltsAmt>0</DonatedServicesAndUseFcltsAmt>
      <RecoveriesPriorYearGrantsAmt>0</RecoveriesPriorYearGrantsAmt>
      <OtherRevenueAmt>0</OtherRevenueAmt>
      <RevenueNotReportedAmt>0</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>197813201</RevenueSubtotalAmt>
      <InvestmentExpensesNotIncldAmt>0</InvestmentExpensesNotIncldAmt>
      <OtherRevenuesNotIncludedAmt>68934</OtherRevenuesNotIncludedAmt>
      <RevenueNotReportedFinclStmtAmt>68934</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>197882135</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>187332748</TotExpnsEtcAuditedFinclStmtAmt>
      <DonatedServicesUseFcltsAmt>0</DonatedServicesUseFcltsAmt>
      <PriorYearAdjustmentsAmt>0</PriorYearAdjustmentsAmt>
      <LossesReportedAmt>0</LossesReportedAmt>
      <OtherExpensesIncludedAmt>-68934</OtherExpensesIncludedAmt>
      <ExpensesNotReportedAmt>-68934</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>187401682</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>0</InvestmentExpensesNotIncld2Amt>
      <OtherExpensesNotIncludedAmt>10480453</OtherExpensesNotIncludedAmt>
      <ExpensesNotRptFinclStmtAmt>10480453</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>197882135</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part X, Line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>Management believes that positions taken during prior years and to be taken for 2017 in reporting federal taxable income for the Company and for its subsidiary are not controversial and have a high degree of being sustained upon any future examination by the taxing authority.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part XI, Line 4b</FormAndLineReferenceDesc>
        <ExplanationTxt>In the audited financial statements, loss on sale of assets ($613), gain on sale of assets ($39,875) and miscellaneous non-operating income ($29,672) were combined ($68,934) and netted against Other Expenses. This revenue, which reduced expenses in the audited financial statements, needs to be added to the audited financial statement revenue because it was shown as revenue in this 990. The total amount added to the audited financial statement revenue is $68,934.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part XII, Line 2d</FormAndLineReferenceDesc>
        <ExplanationTxt>In the audited financial statements, loss on sale of assets ($613), gain on sale of assets ($39,875) and miscellaneous non-operating income ($29,672) were combined ($68,934) and netted against Other Expenses. This revenue, which reduced expenses in the audited financial statements, needs to be added to audited financial statement expenses to reconcile to this 990's expenses that do not include the reduction.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part XII, Line 4b</FormAndLineReferenceDesc>
        <ExplanationTxt>$10,480,453 of capital credits are recorded as an expense in this 990, but are not an expense in the audited financial statements. See below and Part O of Form 990, Part IX, Line 4. Please note however that patronage dividends are the process by which Great Lakes Energy operates at cost with our members, and thereby it is a key component to accomplishing the exempt purpose of the cooperative. Therefore, Great Lakes Energy has reported the amount of our 2017 margins ($10,480,453) that have been allocated to our members, subsequent to year end, as an expense.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleJ documentId="R000003" softwareId="17005980" softwareVersionNum="v1.00">
      <IndependentConsultantInd>X</IndependentConsultantInd>
      <WrittenEmploymentContractInd>X</WrittenEmploymentContractInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>WILLIAM SCOTT</PersonNm>
        <TitleTxt>PRES, CHIEF EXECUTIVE OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>342250</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>58136</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>5355</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>120389</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>20742</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>546872</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>SHARI CULVER</PersonNm>
        <TitleTxt>VP, COMM/MARKETING</TitleTxt>
        <BaseCompensationFilingOrgAmt>185296</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>33930</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>791</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>56082</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>24977</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>301076</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JENNIFER WILSON</PersonNm>
        <TitleTxt>VP, HUMAN RESOURCES</TitleTxt>
        <BaseCompensationFilingOrgAmt>189046</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>33930</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>1091</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>64773</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>20308</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>309148</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>STEPHEN DRAKE</PersonNm>
        <TitleTxt>VP, CHIEF FINANCIAL OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>190242</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>26780</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>3168</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>84801</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>22341</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>327332</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>PATRICK ANZELL</PersonNm>
        <TitleTxt>VP, MEMBER SERVICES/REG. AFFAIRS &amp; PURCHASING</TitleTxt>
        <BaseCompensationFilingOrgAmt>189046</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>33930</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>2181</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>112782</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>16498</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>354437</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>SHAUN LAMP</PersonNm>
        <TitleTxt>VP, INFORMATION TECHNOLOGY</TitleTxt>
        <BaseCompensationFilingOrgAmt>178732</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>23549</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>686</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>36823</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>23827</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>263617</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>SCOTT BLECKE</PersonNm>
        <TitleTxt>VP, Engineering</TitleTxt>
        <BaseCompensationFilingOrgAmt>160983</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>22961</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>761</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>28161</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>19809</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>232675</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>RICHARD WALSWORTH</PersonNm>
        <TitleTxt>FORMER DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>13200</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>13200</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ROBERT THUROW</PersonNm>
        <TitleTxt>FORMER DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>13200</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>13200</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 3</FormAndLineReferenceDesc>
        <ExplanationTxt>Amounts listed for CEO, CFO and all employees on Part VII in column F include (per 990 instructions) amounts associated with health care employer premiums, excess life insurance premiums, and employer contributions to a qualified 401k plan. It should be noted that these benefits are available to all employees of Great Lakes Energy and therefore these are not discriminatory benefits. Amounts included for actuarial increase in defined benefit pension plans also included as Other Compensation were provided to Great Lakes Energy by the National Rural Electric Cooperative Association (NRECA) which administers the multi-employer pension plan. It should be noted that these actuarial amounts are much higher than the actual cash paid to the plan. The actual cash paid to the plan for the employees listed was 37% less than the actuarial value as reported in column F as Other Compensation. The 37% difference is due to the multi-employer basis of the NRECA defined benefit pension plan. This benefit is also available to all Great Lakes Energy employees and is nondiscriminatory.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleL documentId="R000004" softwareId="17005980" softwareVersionNum="v1.00">
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1Txt>Wolverine Power Supply Cooperative</BusinessNameLine1Txt>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>Board of Directors</RelationshipDescriptionTxt>
        <TransactionAmt>116998558</TransactionAmt>
        <TransactionDesc>Purchase of electricity for distribution</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1Txt>Michigan Electric Cooperative Assoc</BusinessNameLine1Txt>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>Board of Directors</RelationshipDescriptionTxt>
        <TransactionAmt>3937993</TransactionAmt>
        <TransactionDesc>Dues, Coop magazine and consulting</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule L, Part IV</FormAndLineReferenceDesc>
        <ExplanationTxt>1)Wolverine Power Supply Cooperative (Wolverine) is the Generation and Transmission company that sells power to Great Lakes Energy (GLE). The power is then delivered to members/consumers of GLE. Three Board members from GLE sit on the Wolverine Board. There are no business transactions between or among the three Board members. 2) Michigan Electric Cooperative Association (MECA) is the Statewide organization of which GLE pays dues and member magazine costs as well as consulting and pass through fees for coordination and implementation of State of Michigan mandated Energy Optimization programs. One GLE Board Director and the CEO of GLE sit on the MECA Board. There are no business transactions between the Board Member and CEO.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleL>
    <IRS990ScheduleO documentId="R000005" softwareId="17005980" softwareVersionNum="v1.00">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>Great Lakes Energy is a Cooperative with all electric "customers" of the Cooperative required to be members.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>Great Lakes Energy is an electric cooperative utility. All members/consumers vote for candidates to fill the nine member Great Lakes Energy Board. An election is held annually. Board Directors serve three year terms and must be re-elected to serve longer than three years. GLE has nine districts with one Board Member from each district.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 7b</FormAndLineReferenceDesc>
        <ExplanationTxt>Certain Bylaw changes must be ratified by the general membership. This ratification is voted upon in conjunction with the annual Board election. There were no bylaw changes in 2017.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>The GLE Board of Directors were presented with a questionnaire in May 2018 which was used to assist Management in completing pertinent sections of this 990. At a subsequent Board meeting, the Board reviewed the preliminary 990 and discussed specifics of the 990 return.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>A questionnaire was delivered to each Board Member and Officers asking each to verify that they had received and read the Conflict of Interest policy and to certify they had no conflicts of interest. These certificates are on file with the supporting documentation for this 990.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>GLE contracts with a nationally recognized compensation consultant to determine salary levels for the Chief Executive Officer and Chief Financial Officer/Chief Operating Officer along with certain others in the Company. The consultant performs an annual market survey and position evaluation utilizing comparative financial data for the industry and company size. The results are confidentially disclosed to the Chairman of the Board of Directors and the Board sets the salary levels for the Officers each year.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>GLE makes company bylaws available to the public on line at www.gtlakes.com and with printed copies upon request. 2016 audited financial statement summaries were mailed to members in June 2017 Country Lines Magazine. They are also available upon request. GLE does not make the conflict of interest policy available to the public.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VII, Section A, Line 1a</FormAndLineReferenceDesc>
        <ExplanationTxt>Amounts listed for CEO, CFO and all employees on Part VII in column F include (per 990 instructions) amounts associated with health care employer premiums, excess life insurance premiums, and employer contributions to a qualified 401k plan. It should be noted that these benefits are available to all employees of Great Lakes Energy and therefore these are not discriminatory benefits. Amounts included for actuarial increase in defined benefit pension plans also included as Other Compensation were provided to Great Lakes Energy by the National Rural Electric Cooperative Association (NRECA) which administers the multi-employer pension plan. It should be noted that these actuarial amounts are much higher than the actual cash paid to the plan. The actual cash paid to the plan for the employees listed was 37% less than the actuarial value as reported in column F as Other Compensation. The 37% difference is due to the multi-employer basis of the NRECA defined benefit pension plan. This benefit is also available to all Great Lakes Energy employees and is nondiscriminatory.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>The instructions for the 2017 Form 990 clarifies that the amount of patronage dividends paid to the members should be reported on Part IX, line 4. The phrase "patronage dividends paid" refers to the process, subsequent to year-end by which Great Lakes Energy allocates patronage capital to members and therefore, operates at cost to our members. Please note however that because patronage dividends is the process by which Great Lakes Energy operates at cost with our members, and thereby it is a key component to accomplishing the exempt purpose of the cooperative, Great Lakes Energy has reported the amount of our 2017 margins that has been allocated to our members subsequent to year-end. Such amounts are an expense for Form 990 reporting but are not an expense for financial statements prepared in accordance with Generally Accepted Accounting Principles (GAAP). As a result, the difference between Great Lakes Energy's GAAP-basis financial statements and the revenue less expenses reported on Part I Line 19 is the amount of the patronage dividends reported as benefits paid to members.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>Changes in equity not included in Great Lakes Energy's net margins consists of Employee post-retirement health benefits and Directors' pension plan adjustments, required by FASB 158, recorded in the financial statements as Other Comprehensive Gain - $2,564,082 increase; patronage capital refunds to members - $10,618,594 decrease; donated capital from members - $850,054 increase; sales tax returned $1,461 decrease; unrealized gain on interest rate swap - $435,448 increase; $1 rounding adjustment; and capital credits allocated and included in Part IX, line 4 that are not recorded in the Cooperative's audited financial statements as an expense in conformity with Generally Accepted Accounting Principles (GAAP) - $10,480,453 increase. The net increase to Net Assets is $3,709,983.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>