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      </OtherExpenses>
      <OtherExpenses>
        <Description>DISTRIBUTION OPERATIONS</Description>
        <Total>3387243</Total>
      </OtherExpenses>
      <AllOtherExpenses>
        <Total>3976397</Total>
      </AllOtherExpenses>
      <TotalFunctionalExpenses>
        <Total>197816492</Total>
      </TotalFunctionalExpenses>
      <CashNonInterestBearing>
        <BOY>2464549</BOY>
        <EOY>3055807</EOY>
      </CashNonInterestBearing>
      <SavingsAndTempCashInvestments>
        <BOY>4119000</BOY>
        <EOY>23099000</EOY>
      </SavingsAndTempCashInvestments>
      <AccountsReceivable>
        <BOY>23273505</BOY>
        <EOY>23483879</EOY>
      </AccountsReceivable>
      <InventoriesForSaleOrUse>
        <BOY>5195008</BOY>
        <EOY>5477404</EOY>
      </InventoriesForSaleOrUse>
      <PrepaidExpensesDeferredCharges>
        <BOY>3156157</BOY>
        <EOY>396337</EOY>
      </PrepaidExpensesDeferredCharges>
      <LandBuildingsEquipmentBasis>337763222</LandBuildingsEquipmentBasis>
      <LandBldgEquipmentAccumDeprec>92314646</LandBldgEquipmentAccumDeprec>
      <LandBuildingsEquipmentBasisNet>
        <BOY>238374652</BOY>
        <EOY>245448576</EOY>
      </LandBuildingsEquipmentBasisNet>
      <InvestmentsOtherSecurities>
        <BOY>54355665</BOY>
        <EOY>63213603</EOY>
      </InvestmentsOtherSecurities>
      <OtherAssetsTotal>
        <BOY>5430704</BOY>
        <EOY>9895176</EOY>
      </OtherAssetsTotal>
      <TotalAssets>
        <BOY>336369240</BOY>
        <EOY>374069782</EOY>
      </TotalAssets>
      <AccountsPayableAccruedExpenses>
        <BOY>9478111</BOY>
        <EOY>26563610</EOY>
      </AccountsPayableAccruedExpenses>
      <DeferredRevenue>
        <BOY>3270</BOY>
        <EOY>3270</EOY>
      </DeferredRevenue>
      <MortNotesPyblSecuredInvestProp>
        <BOY>124232113</BOY>
        <EOY>125495204</EOY>
      </MortNotesPyblSecuredInvestProp>
      <TotalLiabilities>
        <BOY>133713494</BOY>
        <EOY>152062084</EOY>
      </TotalLiabilities>
      <DoNotFollowSFAS117>X</DoNotFollowSFAS117>
      <CapStckTrstPrinCurrentFunds>
        <BOY>332160</BOY>
        <EOY>332445</EOY>
      </CapStckTrstPrinCurrentFunds>
      <PaidInCapSrplsLandBldgEqpFund>
        <BOY>153165</BOY>
        <EOY>153165</EOY>
      </PaidInCapSrplsLandBldgEqpFund>
      <RetainedEarningsEndowmentEtc>
        <BOY>202170421</BOY>
        <EOY>221522088</EOY>
      </RetainedEarningsEndowmentEtc>
      <TotalNetAssetsFundBalances>
        <BOY>202655746</BOY>
        <EOY>222007698</EOY>
      </TotalNetAssetsFundBalances>
      <TotalLiabNetAssetsFundBalances>
        <BOY>336369240</BOY>
        <EOY>374069782</EOY>
      </TotalLiabNetAssetsFundBalances>
      <InfoInScheduleOPartXI>X</InfoInScheduleOPartXI>
      <ReconcilationRevenueExpenses>23222615</ReconcilationRevenueExpenses>
      <ReconcilationOtherChanges>-3870663</ReconcilationOtherChanges>
      <InfoInScheduleOPartXII>X</InfoInScheduleOPartXII>
      <MethodOfAccountingAccrual>X</MethodOfAccountingAccrual>
      <AccountantCompileOrReview>0</AccountantCompileOrReview>
      <FSAudited>1</FSAudited>
      <FSAuditedBasis>
        <FinancialStatementSeparate>X</FinancialStatementSeparate>
      </FSAuditedBasis>
      <AuditCommittee>1</AuditCommittee>
      <FederalGrantAuditRequired>0</FederalGrantAuditRequired>
    </IRS990>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <Land>
        <OtherCostOrOtherBasis>448565</OtherCostOrOtherBasis>
        <BookValue>448565</BookValue>
      </Land>
      <Buildings>
        <OtherCostOrOtherBasis>9838516</OtherCostOrOtherBasis>
        <Depreciation>2692541</Depreciation>
        <BookValue>7145975</BookValue>
      </Buildings>
      <Equipment>
        <OtherCostOrOtherBasis>19063268</OtherCostOrOtherBasis>
        <Depreciation>5217162</Depreciation>
        <BookValue>13846106</BookValue>
      </Equipment>
      <OtherLandBuildings>
        <OtherCostOrOtherBasis>308412873</OtherCostOrOtherBasis>
        <Depreciation>84404943</Depreciation>
        <BookValue>224007930</BookValue>
      </OtherLandBuildings>
      <TotalOfBookValueLandBuildings>245448576</TotalOfBookValueLandBuildings>
      <OtherSecurities>
        <Description>INVESTMENTS IN ASSOCIATED ORGANIZATIONS</Description>
        <BookValue>62670158</BookValue>
        <MethodOfValuation>C</MethodOfValuation>
      </OtherSecurities>
      <OtherSecurities>
        <Description>VARIOUS OTHER SECURITIES</Description>
        <BookValue>543445</BookValue>
        <MethodOfValuation>F</MethodOfValuation>
      </OtherSecurities>
      <TotalOfBookValueSecurities>63213603</TotalOfBookValueSecurities>
      <FootnoteInPartXIII>X</FootnoteInPartXIII>
      <TotRevenueEtcAuditedFinclStmt>221036160</TotRevenueEtcAuditedFinclStmt>
      <RevenueNotRptdF990>0</RevenueNotRptdF990>
      <RevenueSubtotal>221036160</RevenueSubtotal>
      <OtherRevenuesNotIncluded>2947</OtherRevenuesNotIncluded>
      <RevenueNotRptdOnFinStmt>2947</RevenueNotRptdOnFinStmt>
      <TotalRevenuePerForm990>221039107</TotalRevenuePerForm990>
      <TotExpensesEtcAuditedFinclStmt>197813545</TotExpensesEtcAuditedFinclStmt>
      <ExpensesNotRptdF990>0</ExpensesNotRptdF990>
      <ExpensesSubtotal>197813545</ExpensesSubtotal>
      <OtherExpensesNotIncluded>2947</OtherExpensesNotIncluded>
      <ExpensesNotRptdOnFinStmt>2947</ExpensesNotRptdOnFinStmt>
      <TotalExpensesPerForm990>197816492</TotalExpensesPerForm990>
      <Form990ScheduleDPartXIII>
        <Identifier>DESCRIPTION OF UNCERTAIN TAX POSITIONS UNDER FIN 48:</Identifier>
        <ReturnReference>PART X, LINE 2:</ReturnReference>
        <Explanation>THE ASSOCIATION IS EXEMPT FROM INCOME TAXES UNDER THE UNITED STATES INTERNAL REVENUE CODE SECTION 501(C)(12), AS LONG AS 85 PERCENT OR MORE OF THE INCOME CONSISTS OF AMOUNTS COLLECTED FROM MEMBERS FOR THE SOLE PURPOSE OF MEETING LOSSES AND EXPENSES. DURING FISCAL YEARS 2012 AND 2011, THE ASSOCIATION WAS NOT REQUIRED TO PAY INCOME TAXES. THE ASSOCIATION HAS DETERMINED THAT THERE ARE NO SIGNIFICANT UNCERTAIN TAX POSITIONS AT DECEMBER 31, 2012 AND 2011. TAX PERIODS FOR ALL FISCAL YEARS AFTER 2008 REMAIN OPEN TO EXAMINATION BY THE FEDERAL AND STATE TAXING JURISDICTIONS TO WHICH THE ASSOCIATION IS SUBJECT. THE ASSOCIATION HAS DETERMINED THAT THERE ARE NO SIGNIFICANT UNCERTAIN TAX POSITIONS AT DECEMBER 31, 2012 AND 2011. TAX PERIODS FOR ALL FISCAL YEARS AFTER 2007 REMAIN OPEN TO EXAMINATION BY THE FEDERAL AND STATE TAXING JURISDICTIONS TO WHICH THE ASSOCIATION IS SUBJECT.</Explanation>
      </Form990ScheduleDPartXIII>
      <Form990ScheduleDPartXIII>
        <Identifier>PART XI, LINE 4B - OTHER ADJUSTMENTS:</Identifier>
        <Explanation>REVENUE NETTED WITH EXPENSES ON FINANCIAL STATEMENTS 2,947.</Explanation>
      </Form990ScheduleDPartXIII>
      <Form990ScheduleDPartXIII>
        <Identifier>PART XII, LINE 4B - OTHER ADJUSTMENTS:</Identifier>
        <Explanation>REVENUE NETTED WITH EXPENSES ON FINANCIAL STATEMENTS 2,947.</Explanation>
      </Form990ScheduleDPartXIII>
    </IRS990ScheduleD>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <RecordsMaintained>1</RecordsMaintained>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>MID-MISSISSIPPI DEVELOPMENT DISTRICT</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>PO BOX 119</AddressLine1>
          <City>NEWTON</City>
          <State>MS</State>
          <ZIPCode>39345</ZIPCode>
        </AddressUS>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>5000</AmountOfCashGrant>
        <PurposeOfGrant>SUPPORT OF ORGANIZATION'S ACTIVITIES</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>MISSISSIPPI BURN FOUNDATION</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>161 PINE RIDGE CIRCLE</AddressLine1>
          <City>BRANDON</City>
          <State>MS</State>
          <ZIPCode>39047</ZIPCode>
        </AddressUS>
        <EINOfRecipient>640592734</EINOfRecipient>
        <IRCSection>501(C)(3)</IRCSection>
        <AmountOfCashGrant>21188</AmountOfCashGrant>
        <PurposeOfGrant>CHARITABLE SUPPORT</PurposeOfGrant>
      </RecipientTable>
      <TotalNbrOf501C3AndGovtGrants>2</TotalNbrOf501C3AndGovtGrants>
      <Form990ScheduleIPartIV>
        <Identifier>PROCEDURE FOR MONITORING GRANTS IN THE U.S.:</Identifier>
        <ReturnReference>PART I, LINE 2:</ReturnReference>
        <Explanation>SCHEDULE I, PART I, LINE 2: GRANTS ARE GIVEN TO GOVERNMENTAL AND TAX EXEMPT ENTITIES, ONLY.</Explanation>
      </Form990ScheduleIPartIV>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <CompensationCommittee>X</CompensationCommittee>
      <CompensationSurvey>X</CompensationSurvey>
      <SeverancePayment>0</SeverancePayment>
      <SupplementalNonqualRetirePlan>0</SupplementalNonqualRetirePlan>
      <EquityBasedCompArrangement>0</EquityBasedCompArrangement>
      <Form990ScheduleJPartII>
        <NamePerson>DONALD L JORDAN</NamePerson>
        <Title>GENERAL MANAGER/CEO</Title>
        <BaseCompensationFilingOrg>239444</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>30768</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>39796</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>11091</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>321099</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION A, LINE 6</ReturnReference>
        <Explanation>THERE ARE NO SEPARATE CLASSES OF MEMBERS AND EACH MEMBER IS ENTITLED TO CAST ONE VOTE IN THE ELECTION OF BOARD MEMBERS OR ANY OTHER MATTERS THAT MAY BE BROUGHT BEFORE THE MEMBERSHIP.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION A, LINE 7A</ReturnReference>
        <Explanation>THERE ARE NO SEPARATE CLASSES OF MEMBERS AND EACH MEMBER IS ENTITLED TO CAST ONE VOTE IN THE ELECTION OF BOARD MEMBERS OR ANY OTHER MATTERS THAT MAY BE BROUGHT BEFORE THE MEMBERSHIP.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION A, LINE 7B</ReturnReference>
        <Explanation>THERE ARE NO SEPARATE CLASSES OF MEMBERS AND EACH MEMBER IS ENTITLED TO CAST ONE VOTE IN THE ELECTION OF BOARD MEMBERS OR ANY OTHER MATTERS THAT MAY BE BROUGHT BEFORE THE MEMBERSHIP. ASSOCIATION MEMBERS MUST APPROVE ANY DISPOSITION OF ASSETS IN AN AMOUNT GREATER THAN TEN PERCENT (10%) OF THE VALUE OF THE ASSOCIATION AND ANY OTHER ITEMS OUTLINED IN THE BYLAWS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 11</ReturnReference>
        <Explanation>FORM 990 IS REVIEWED ANNUALLY BY THE BOARD OF DIRECTORS OF SOUTHERN PINE EPA. THE GENERAL MANAGER DISCUSSES THE FORM WITH THE BOARD AT A REGULAR BOARD MEETING. THE 2012 FORM 990 WILL BE PRESENTED TO THE BOARD AT THE OCTOBER 2013 MEETING AT WHICH TIME IT WILL BE DISCUSSED IN DETAIL.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 12C</ReturnReference>
        <Explanation>THE GENERAL MANAGER REVIEWS THE CONFLICT OF INTEREST POLICY WITH THE BOARD OF DIRECTORS TO INSURE COMPLIANCE. THIS IS DONE ANNUALLY.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 15</ReturnReference>
        <Explanation>THE COMPENSATION OF THE CEO IS DETERMINED ANNUALLY BY THE BOARD OF DIRECTORS USING COMPENSATION STUDIES PREPARED BY INDEPENDENT CONSULTANTS. THE CEO DETERMINES THE COMPENSATION OF OTHER EMPLOYEES UTILIZING THE SAME STUDIES AS ABOVE.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION C, LINE 19</ReturnReference>
        <Explanation>ANY AND ALL DOCUMENTS, POLICIES, MINUTES, AND OTHER RECORDS ARE MADE AVAILABLE TO THE PUBLIC UPON REQUEST DURING NORMAL BUSINESS HOURS AT THE OFFICE OF THE ASSOCIATION.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>CHANGES IN NET ASSETS OR FUND BALANCES:</Identifier>
        <ReturnReference>FORM 990, PART XI, LINE 9:</ReturnReference>
        <Explanation>RETIREMENT OF CAPITAL CREDITS -3,870,948. CHANGE IN MEMBERSHIP EQUITIES 285.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>AUDIT COMMITTEE</Identifier>
        <ReturnReference>FORM 990, PART XII, LINE 2C</ReturnReference>
        <Explanation>SOUTHERN PINE ELECTRIC POWER ASSOCIATION DOES HAVE AN AUDIT COMMITTEE THAT OVERSEES THE AUDIT PROCESS AND THE SELECTION OF AN INDEPENDENT ACCOUNTANT. THIS PROCESS HAS NOT CHANGED FROM PRIOR YEAR.</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
  </ReturnData>
</Return>