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        <RelatedOrExemptFuncIncomeAmt>51099</RelatedOrExemptFuncIncomeAmt>
      </InvestmentIncomeGrp>
      <GrossAmountSalesAssetsGrp>
        <OtherAmt>32813</OtherAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <OtherAmt>500</OtherAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <OtherAmt>32313</OtherAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>32313</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>32313</RelatedOrExemptFuncIncomeAmt>
      </NetGainOrLossInvestmentsGrp>
      <OtherRevenueMiscGrp>
        <Desc>Other Revenue - 990-T</Desc>
        <BusinessCd>443142</BusinessCd>
        <TotalRevenueColumnAmt>157647</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>157647</UnrelatedBusinessRevenueAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueMiscGrp>
        <Desc>Other Revenue</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>56216</TotalRevenueColumnAmt>
        <ExclusionAmt>56216</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueTotalAmt>213863</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>27682534</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>27468671</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>157647</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>56216</ExclusionAmt>
      </TotalRevenueGrp>
      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <BenefitsToMembersGrp>
        <TotalAmt>2323043</TotalAmt>
      </BenefitsToMembersGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>379025</TotalAmt>
      </CompCurrentOfcrDirectorsGrp>
      <InterestGrp>
        <TotalAmt>2003483</TotalAmt>
      </InterestGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>2377371</TotalAmt>
      </DepreciationDepletionGrp>
      <OtherExpensesGrp>
        <Desc>Cost of Power</Desc>
        <TotalAmt>14500795</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Distribution Expense -</Desc>
        <TotalAmt>2082135</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Distribution Expense -</Desc>
        <TotalAmt>1368818</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Taxes</Desc>
        <TotalAmt>1160368</TotalAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>1487496</TotalAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>27682534</TotalAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>1415674</BOYAmt>
        <EOYAmt>1559734</EOYAmt>
      </CashNonInterestBearingGrp>
      <AccountsReceivableGrp>
        <BOYAmt>2289006</BOYAmt>
        <EOYAmt>2229168</EOYAmt>
      </AccountsReceivableGrp>
      <OthNotesLoansReceivableNetGrp>
        <BOYAmt>322000</BOYAmt>
        <EOYAmt>238000</EOYAmt>
      </OthNotesLoansReceivableNetGrp>
      <InventoriesForSaleOrUseGrp>
        <BOYAmt>383404</BOYAmt>
        <EOYAmt>380848</EOYAmt>
      </InventoriesForSaleOrUseGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>1204230</BOYAmt>
        <EOYAmt>1008679</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>95188685</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>32738266</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>60191666</BOYAmt>
        <EOYAmt>62450419</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsProgramRelatedGrp>
        <BOYAmt>8797844</BOYAmt>
        <EOYAmt>8812556</EOYAmt>
      </InvestmentsProgramRelatedGrp>
      <TotalAssetsGrp>
        <BOYAmt>74603824</BOYAmt>
        <EOYAmt>76679404</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>2871182</BOYAmt>
        <EOYAmt>2857291</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <DeferredRevenueGrp>
        <BOYAmt>102299</BOYAmt>
        <EOYAmt>124827</EOYAmt>
      </DeferredRevenueGrp>
      <MortgNotesPyblScrdInvstPropGrp>
        <BOYAmt>48816287</BOYAmt>
        <EOYAmt>49019043</EOYAmt>
      </MortgNotesPyblScrdInvstPropGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>51789768</BOYAmt>
        <EOYAmt>52001161</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrgDoesNotFollowSFAS117Ind>X</OrgDoesNotFollowSFAS117Ind>
      <CapStkTrPrinCurrentFundsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </CapStkTrPrinCurrentFundsGrp>
      <PdInCapSrplsLandBldgEqpFundGrp>
        <BOYAmt>22975</BOYAmt>
        <EOYAmt>21985</EOYAmt>
      </PdInCapSrplsLandBldgEqpFundGrp>
      <RtnEarnEndowmentIncmOthFndsGrp>
        <BOYAmt>22791081</BOYAmt>
        <EOYAmt>24656258</EOYAmt>
      </RtnEarnEndowmentIncmOthFndsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>22814056</BOYAmt>
        <EOYAmt>24678243</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>74603824</BOYAmt>
        <EOYAmt>76679404</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <InfoInScheduleOPartXIInd>X</InfoInScheduleOPartXIInd>
      <ReconcilationRevenueExpnssAmt>0</ReconcilationRevenueExpnssAmt>
      <OtherChangesInNetAssetsAmt>1864187</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <LandGrp>
        <OtherCostOrOtherBasisAmt>741195</OtherCostOrOtherBasisAmt>
        <BookValueAmt>741195</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
        <OtherCostOrOtherBasisAmt>9124182</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>861713</DepreciationAmt>
        <BookValueAmt>8262469</BookValueAmt>
      </BuildingsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>85323308</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>31876553</DepreciationAmt>
        <BookValueAmt>53446755</BookValueAmt>
      </EquipmentGrp>
      <TotalBookValueLandBuildingsAmt>62450419</TotalBookValueLandBuildingsAmt>
      <InvstProgramRelatedOrgGrp>
        <Desc>Subordinated Certificates</Desc>
        <BookValueAmt>836440</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </InvstProgramRelatedOrgGrp>
      <InvstProgramRelatedOrgGrp>
        <Desc>Investments in Associated Organizations</Desc>
        <BookValueAmt>7358669</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </InvstProgramRelatedOrgGrp>
      <InvstProgramRelatedOrgGrp>
        <Desc>Economic Development Loans</Desc>
        <BookValueAmt>385622</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </InvstProgramRelatedOrgGrp>
      <InvstProgramRelatedOrgGrp>
        <Desc>Revolving Loans</Desc>
        <BookValueAmt>196989</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </InvstProgramRelatedOrgGrp>
      <InvstProgramRelatedOrgGrp>
        <Desc>Other Investments</Desc>
        <BookValueAmt>34836</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </InvstProgramRelatedOrgGrp>
      <TotalBookValueProgramRltdAmt>8812556</TotalBookValueProgramRltdAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>27682534</TotalRevEtcAuditedFinclStmtAmt>
      <RevenueNotReportedAmt>0</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>27682534</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>27682534</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>25359491</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesNotReportedAmt>0</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>25359491</ExpensesSubtotalAmt>
      <OtherExpensesNotIncludedAmt>2323043</OtherExpensesNotIncludedAmt>
      <ExpensesNotRptFinclStmtAmt>2323043</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>27682534</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part X, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>An evaluation of whether or not it has any uncertain tax positions is determined on an annual basis by the Cooperative. While the Cooperative believes they have adequately provided for all tax positions, amounts asserted by taxing authorities could be different than the positions taken by the Cooperative. The Cooperative recognizes any interest and penalties assessed by taxing authorities in income tax expense and, with few exceptions, are no longer subject to federal, state, or local tax examinations by tax authorities for years before 2013.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XII, Line 4b - Other Adjustments:</FormAndLineReferenceDesc>
        <ExplanationTxt>Margins Assigned to Members in Current Year 2,323,043.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Douglas Jackson</PersonNm>
        <TitleTxt>General Manager</TitleTxt>
        <BaseCompensationFilingOrgAmt>154783</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>65121</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>30768</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>250672</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>Rolling Hills Electric Cooperative, Inc. is a not-for-profit membership organization whose members have identical voting rights and are assigned margins in accordance with the cooperative's bylaws.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>All board members are elected by the membership.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7b</FormAndLineReferenceDesc>
        <ExplanationTxt>Governance decisions such as amending bylaws, electing Board of Trustees, and self-regulating are reserved to members.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>The accountant completes the Form 990, with the assistance of an accounting team, and reviews the Form 990 with the General Manager prior to filing.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>The Cooperative monitors and enforces compliance of the conflict of interest policy through discussion or confrontation.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>The Board performs an annual review of the compensation for both the Cooperative's officers, as well as its CEO.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>Rolling Hills Electric Cooperative's governing documents, conflict of interest policy, and financial statements are available to the public upon request at the main office in Beloit, Kansas.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>The instructions to the 2018 Form 990 indicate that organizations exempt under Section 501(c)(12) should report "patronage dividends paid" to their members in Part IX, Line 4 of the Form 990. The Cooperative has interpreted the words "patronage dividends paid" in the instructions to mean margins that are assigned or assignable to the members. The Cooperative assigns the net margins to its members each year. Therefore, the amount listed in Part IX, Line 4 represents the net margins assignable to the members for the calendar year ended December 31, 2018.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, line 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>Retirement of capital credits -458,318. Other Changes -990. Adjustment of Current Year Margins to Members 2,323,043. Capital credit gains 452.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>