<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xsi:schemaLocation="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2021v4.2">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2022-11-15T11:17:30-06:00</ReturnTs>
    <TaxPeriodEndDt>2021-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmName>
        <BusinessNameLine1Txt>PRICEWATERHOUSECOOPERS LLP</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>2001 MARKET STREET SUITE 1800</AddressLine1Txt>
        <CityNm>PHILADELPHIA</CityNm>
        <StateAbbreviationCd>PA</StateAbbreviationCd>
        <ZIPCd>19103</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2021-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>943274043</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>CALIFORNIA INDEPENDENT SYSTEM</BusinessNameLine1Txt>
        <BusinessNameLine2Txt>OPERATOR CORPORATION</BusinessNameLine2Txt>
      </BusinessName>
      <InCareOfNm>% DENNIS ESTRADA</InCareOfNm>
      <BusinessNameControlTxt>CALI</BusinessNameControlTxt>
      <PhoneNum>9163514400</PhoneNum>
      <USAddress>
        <AddressLine1Txt>250 OUTCROPPING WAY</AddressLine1Txt>
        <CityNm>FOLSOM</CityNm>
        <StateAbbreviationCd>CA</StateAbbreviationCd>
        <ZIPCd>95630</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>RYAN SEGHESIO</PersonNm>
      <PersonTitleTxt>VP, CFO, &amp; TREASURER</PersonTitleTxt>
      <PhoneNum>9163514400</PhoneNum>
      <SignatureDt>2022-11-15</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <SigningOfficerGrp>
      <PersonFullName>
        <PersonFirstNm>RYAN</PersonFirstNm>
        <PersonLastNm>SEGHESIO</PersonLastNm>
      </PersonFullName>
      <SSN>999009999</SSN>
    </SigningOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>Albert N Antonelli</PreparerPersonNm>
      <PTIN>P01496650</PTIN>
      <PhoneNum>2673303000</PhoneNum>
      <PreparationDt>2022-11-14</PreparationDt>
    </PreparerPersonGrp>
    <AdditionalFilerInformation>
      <TrustedCustomerGrp>
        <TrustedCustomerCd>2</TrustedCustomerCd>
      </TrustedCustomerGrp>
    </AdditionalFilerInformation>
    <TaxYr>2021</TaxYr>
    <BuildTS>2022-09-23 18:48:47Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="7">
    <IRS990 documentId="IRS990" referenceDocumentId="IRS990ScheduleO">
      <PrincipalOfficerNm>ELLIOT MAINZER</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>250 OUTCROPPING WAY</AddressLine1Txt>
        <CityNm>FOLSOM</CityNm>
        <StateAbbreviationCd>CA</StateAbbreviationCd>
        <ZIPCd>95630</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>485374304</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>false</GroupReturnForAffiliatesInd>
      <Organization501c3Ind>X</Organization501c3Ind>
      <WebsiteAddressTxt>WWW.CAISO.COM</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>1997</FormationYr>
      <LegalDomicileStateCd>CA</LegalDomicileStateCd>
      <ActivityOrMissionDesc>CALIFORNIA INDEPENDENT SYSTEM OPERATOR CORPORATION'S (CALIFORNIA ISO) MISSION STATEMENT HAS BEEN INCLUDED ON SCHEDULE O.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>5</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>5</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>811</TotalEmployeeCnt>
      <TotalVolunteersCnt>0</TotalVolunteersCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <NetUnrelatedBusTxblIncmAmt>0</NetUnrelatedBusTxblIncmAmt>
      <PYContributionsGrantsAmt>0</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>0</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>240477265</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>244257210</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>9248379</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>5223057</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>113211</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>116822</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>249838855</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>249597089</CYTotalRevenueAmt>
      <PYGrantsAndSimilarPaidAmt>0</PYGrantsAndSimilarPaidAmt>
      <CYGrantsAndSimilarPaidAmt>0</CYGrantsAndSimilarPaidAmt>
      <PYBenefitsPaidToMembersAmt>0</PYBenefitsPaidToMembersAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>138788888</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>139889501</CYSalariesCompEmpBnftPaidAmt>
      <PYTotalProfFndrsngExpnsAmt>0</PYTotalProfFndrsngExpnsAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>0</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>85490740</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>89544963</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>224279628</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>229434464</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>25559227</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>20162625</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>951583530</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>1094263808</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>735543053</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>861840129</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>216040477</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>232423679</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <MissionDesc>CALIFORNIA ISO'S MISSION STATEMENT HAS BEEN INCLUDED ON SCHEDULE O.</MissionDesc>
      <SignificantNewProgramSrvcInd>false</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>false</SignificantChangeInd>
      <ExpenseAmt>203130333</ExpenseAmt>
      <RevenueAmt>244374032</RevenueAmt>
      <Desc>THE ORGANIZATION SERVES AS THE SYSTEM OPERATOR OF AN INTEGRATED STATEWIDE ELECTRICITY TRANSMISSION GRID.</Desc>
      <TotalProgramServiceExpensesAmt>203130333</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="IRS990ScheduleA">true</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd>false</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd referenceDocumentId="IRS990ScheduleC">false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd referenceDocumentId="IRS990ScheduleC">true</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd referenceDocumentId="IRS990ScheduleC">false</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd referenceDocumentId="IRS990ScheduleD">false</DonorAdvisedFundInd>
      <ConservationEasementsInd referenceDocumentId="IRS990ScheduleD">false</ConservationEasementsInd>
      <CollectionsOfArtInd referenceDocumentId="IRS990ScheduleD">false</CollectionsOfArtInd>
      <CreditCounselingInd referenceDocumentId="IRS990ScheduleD">false</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd referenceDocumentId="IRS990ScheduleD">false</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="IRS990ScheduleD">true</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd referenceDocumentId="IRS990ScheduleD">false</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd referenceDocumentId="IRS990ScheduleD">false</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd referenceDocumentId="IRS990ScheduleD">false</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="IRS990ScheduleD">true</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="IRS990ScheduleD">false</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="IRS990ScheduleD">true</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="IRS990ScheduleD">false</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <ForeignActivitiesInd>false</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>false</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>false</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>false</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>false</FundraisingActivitiesInd>
      <GamingActivitiesInd>false</GamingActivitiesInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <GrantsToOrganizationsInd>false</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd>false</GrantsToIndividualsInd>
      <ScheduleJRequiredInd referenceDocumentId="IRS990ScheduleJ">true</ScheduleJRequiredInd>
      <TaxExemptBondsInd>false</TaxExemptBondsInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <PYExcessBenefitTransInd>false</PYExcessBenefitTransInd>
      <LoanOutstandingInd>false</LoanOutstandingInd>
      <GrantToRelatedPersonInd>false</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>false</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>false</BusinessRlnWithFamMemInd>
      <BusinessRlnWith35CtrlEntInd>false</BusinessRlnWith35CtrlEntInd>
      <DeductibleNonCashContriInd>false</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>false</DeductibleArtContributionInd>
      <TerminateOperationsInd>false</TerminateOperationsInd>
      <PartialLiquidationInd>false</PartialLiquidationInd>
      <DisregardedEntityInd referenceDocumentId="IRS990ScheduleR">false</DisregardedEntityInd>
      <RelatedEntityInd referenceDocumentId="IRS990ScheduleR">true</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd referenceDocumentId="IRS990ScheduleR">false</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd referenceDocumentId="IRS990ScheduleR">false</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>true</ScheduleORequiredInd>
      <IRPDocumentCnt>104</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <BackupWthldComplianceInd>true</BackupWthldComplianceInd>
      <EmployeeCnt>811</EmployeeCnt>
      <EmploymentTaxReturnsFiledInd>true</EmploymentTaxReturnsFiledInd>
      <UnrelatedBusIncmOverLimitInd>false</UnrelatedBusIncmOverLimitInd>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>false</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>false</NondeductibleContributionsInd>
      <QuidProQuoContributionsInd>false</QuidProQuoContributionsInd>
      <Form8282PropertyDisposedOfInd>false</Form8282PropertyDisposedOfInd>
      <RcvFndsToPayPrsnlBnftCntrctInd>false</RcvFndsToPayPrsnlBnftCntrctInd>
      <PayPremiumsPrsnlBnftCntrctInd>false</PayPremiumsPrsnlBnftCntrctInd>
      <IndoorTanningServicesInd>false</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>true</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>false</SubjectToExcsTaxNetInvstIncInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>5</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>5</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>false</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>false</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>false</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>false</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>false</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>true</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>false</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>true</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>true</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>false</OfficerMailingAddressInd>
      <LocalChaptersInd>false</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>true</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>true</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>true</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>true</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>true</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>true</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>true</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>true</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>false</InvestmentInJointVentureInd>
      <StatesWhereCopyOfReturnIsFldCd>CA</StatesWhereCopyOfReturnIsFldCd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <PersonNm>DENNIS ESTRADA</PersonNm>
        <PhoneNum>9163512235</PhoneNum>
        <USAddress>
          <AddressLine1Txt>250 OUTCROPPING WAY</AddressLine1Txt>
          <CityNm>FOLSOM</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>95630</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <InfoInScheduleOPartVIIInd>X</InfoInScheduleOPartVIIInd>
      <Form990PartVIISectionAGrp>
        <PersonNm>Mark Rothleder</PersonNm>
        <TitleTxt>SR. VP &amp; CHIEF OPERATING OFF</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>987946</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>173626</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Stephen Berberich</PersonNm>
        <TitleTxt>CEO EMERITUS</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <FormerOfcrDirectorTrusteeInd>X</FormerOfcrDirectorTrusteeInd>
        <ReportableCompFromOrgAmt>1071776</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>67526</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Elliot Mainzer</PersonNm>
        <TitleTxt>PRESIDENT &amp; CEO</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>834421</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>103767</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Roger Collanton</PersonNm>
        <TitleTxt>VP, GEN CNSL &amp; CHIEF COMP. OFF</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>800768</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>114828</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Stacey Crowley</PersonNm>
        <TitleTxt>VP, EXTERNAL AFFAIRS</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>695020</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>103394</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Petar Ristanovic</PersonNm>
        <TitleTxt>VP, Technology</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <FormerOfcrDirectorTrusteeInd>X</FormerOfcrDirectorTrusteeInd>
        <ReportableCompFromOrgAmt>786767</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Ryan Seghesio</PersonNm>
        <TitleTxt>VP, CFO &amp; TREASURER</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>613511</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>118526</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Neil Millar</PersonNm>
        <TitleTxt>VP, INFRASTRUCTURE &amp; OPS PLAN</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>600642</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>118170</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Jodi Ziemathis</PersonNm>
        <TitleTxt>VP, Human Resources</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>564802</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>117416</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Eric Schmitt</PersonNm>
        <TitleTxt>VP, Operations</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <FormerOfcrDirectorTrusteeInd>X</FormerOfcrDirectorTrusteeInd>
        <ReportableCompFromOrgAmt>507636</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>45335</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Khaled Abdul-Rahman</PersonNm>
        <TitleTxt>VP, PWR SYSTEMS &amp; MARKET TECH</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>446103</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>92961</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Anna McKenna</PersonNm>
        <TitleTxt>VP, MKT POLICY AND PERFORMANCE</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>442973</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>86070</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Anthony Ivancovich</PersonNm>
        <TitleTxt>DEPUTY GEN. CNSL. - REGULATORY</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>429405</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>77912</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Burton Gross</PersonNm>
        <TitleTxt>Deputy General Counsel - Legal</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>414060</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>66936</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>John Anders</PersonNm>
        <TitleTxt>ASST GENERAL COUNSEL - LEGAL</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>384438</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>85644</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Dede Subakti</PersonNm>
        <TitleTxt>VP, SYSTEMS OPERATIONS</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>382955</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>76967</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Gregory Cook</PersonNm>
        <TitleTxt>EXEC. DIR., MARKET &amp; INFRA</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>369650</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>80545</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Janet Morris</PersonNm>
        <TitleTxt>EXEC DIR., PROGRAM &amp; APP MGMT</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>375804</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>65700</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Daniel Shonkwiler</PersonNm>
        <TitleTxt>ASST GEN CNSL - CORP &amp; LITIG</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>356993</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>77880</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Eric Hildebrandt</PersonNm>
        <TitleTxt>EXEC. DIR., MARKET MONITORING</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>343657</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>62351</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Joanne Serina</PersonNm>
        <TitleTxt>VP, STAKEHOLDER ENGAGEMENT</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>310837</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>66701</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Hugo Frech</PersonNm>
        <TitleTxt>EXEC.DIR, IT IFS ARC &amp; INFOSEC</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>296467</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>67172</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Keith Casey</PersonNm>
        <TitleTxt>VP, MKT AND INFRASTRUCTURE DEV</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <FormerOfcrDirectorTrusteeInd>X</FormerOfcrDirectorTrusteeInd>
        <ReportableCompFromOrgAmt>175489</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ANGELINA GALITEVA</PersonNm>
        <TitleTxt>BOARD OF GOVERNORS</TitleTxt>
        <AverageHoursPerWeekRt>8.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>111000</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SEVERIN BORENSTEIN</PersonNm>
        <TitleTxt>BOARD OF GOVERNORS</TitleTxt>
        <AverageHoursPerWeekRt>8.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>102000</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ASHUTOSH BHAGWAT</PersonNm>
        <TitleTxt>CHAIR, BOARD OF GOVERNORS</TitleTxt>
        <AverageHoursPerWeekRt>8.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>95000</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MARY LESLIE</PersonNm>
        <TitleTxt>BOARD OF GOVERNORS</TitleTxt>
        <AverageHoursPerWeekRt>8.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>91000</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JAN SCHORI</PersonNm>
        <TitleTxt>BOARD OF GOVERNORS</TitleTxt>
        <AverageHoursPerWeekRt>8.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>70550</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>12405120</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>1869427</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>539</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>true</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>true</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>SIEMENS INDUSTRY INC</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>DEPT CH 14381</AddressLine1Txt>
            <CityNm>PALATINE</CityNm>
            <StateAbbreviationCd>IL</StateAbbreviationCd>
            <ZIPCd>600554381</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>ENGINEERING SERVICES</ServicesDesc>
        <CompensationAmt>11983842</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>CORESTAFF SERVICES</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>PO BOX 60876</AddressLine1Txt>
            <CityNm>CHARLOTTE</CityNm>
            <StateAbbreviationCd>NC</StateAbbreviationCd>
            <ZIPCd>282600876</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>TEMPORARY STAFFING</ServicesDesc>
        <CompensationAmt>3944016</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>ATT</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>PO BOX 5019</AddressLine1Txt>
            <CityNm>CAROL STREAM</CityNm>
            <StateAbbreviationCd>IL</StateAbbreviationCd>
            <ZIPCd>601975019</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>TELECOMM. SERVICES</ServicesDesc>
        <CompensationAmt>3102704</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>OPEN ACCESS TECHNOLOGY INTERNATIONA</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>14800 28TH AVENUE STE 140</AddressLine1Txt>
            <CityNm>PLYMOUTH</CityNm>
            <StateAbbreviationCd>MN</StateAbbreviationCd>
            <ZIPCd>55447</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>CONSULTING</ServicesDesc>
        <CompensationAmt>3173683</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>TEKSYSTEMS INC</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>PO BOX 198568</AddressLine1Txt>
            <CityNm>ATLANTA</CityNm>
            <StateAbbreviationCd>GA</StateAbbreviationCd>
            <ZIPCd>30384</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>CONSULTING</ServicesDesc>
        <CompensationAmt>2471116</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>32</CntrctRcvdGreaterThan100KCnt>
      <TotalContributionsAmt>0</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>GRID MANAGEMENT REVENUES</Desc>
        <BusinessCd>221000</BusinessCd>
        <TotalRevenueColumnAmt>186153740</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>186153740</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>LGIP REVENUES</Desc>
        <BusinessCd>221000</BusinessCd>
        <TotalRevenueColumnAmt>9040778</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>9040778</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>RELIABILITY COORDINATOR</Desc>
        <BusinessCd>221000</BusinessCd>
        <TotalRevenueColumnAmt>17952453</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>17952453</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>NODAL PRICING</Desc>
        <BusinessCd>221000</BusinessCd>
        <TotalRevenueColumnAmt>8400000</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>8400000</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>WEIM REVENUES</Desc>
        <BusinessCd>221000</BusinessCd>
        <TotalRevenueColumnAmt>15065648</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>15065648</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalOthProgramServiceRevGrp>
        <TotalRevenueColumnAmt>7644591</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>7644591</RelatedOrExemptFuncIncomeAmt>
      </TotalOthProgramServiceRevGrp>
      <TotalProgramServiceRevenueAmt>244257210</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>5424229</TotalRevenueColumnAmt>
        <ExclusionAmt>5424229</ExclusionAmt>
      </InvestmentIncomeGrp>
      <IncmFromInvestBondProceedsGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </IncmFromInvestBondProceedsGrp>
      <RoyaltiesRevenueGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </RoyaltiesRevenueGrp>
      <RentalIncomeOrLossGrp>
        <RealAmt>0</RealAmt>
        <PersonalAmt>0</PersonalAmt>
      </RentalIncomeOrLossGrp>
      <NetRentalIncomeOrLossGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetRentalIncomeOrLossGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>235576043</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>235777215</SecuritiesAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>-201172</SecuritiesAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>-201172</TotalRevenueColumnAmt>
        <ExclusionAmt>-201172</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <FundraisingGrossIncomeAmt>0</FundraisingGrossIncomeAmt>
      <FundraisingDirectExpensesAmt>0</FundraisingDirectExpensesAmt>
      <NetIncmFromFundraisingEvtGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetIncmFromFundraisingEvtGrp>
      <GamingGrossIncomeAmt>0</GamingGrossIncomeAmt>
      <GamingDirectExpensesAmt>0</GamingDirectExpensesAmt>
      <NetIncomeFromGamingGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetIncomeFromGamingGrp>
      <GrossSalesOfInventoryAmt>0</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>0</CostOfGoodsSoldAmt>
      <NetIncomeOrLossGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetIncomeOrLossGrp>
      <OtherRevenueMiscGrp>
        <Desc>MISC. NON-OPERATING INCOME</Desc>
        <BusinessCd>900003</BusinessCd>
        <TotalRevenueColumnAmt>116822</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>116822</RelatedOrExemptFuncIncomeAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueTotalAmt>116822</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>249597089</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>244374032</RelatedOrExemptFuncIncomeAmt>
        <ExclusionAmt>5223057</ExclusionAmt>
      </TotalRevenueGrp>
      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>0</TotalAmt>
      </GrantsToDomesticOrgsGrp>
      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>0</TotalAmt>
      </GrantsToDomesticIndividualsGrp>
      <ForeignGrantsGrp>
        <TotalAmt>0</TotalAmt>
      </ForeignGrantsGrp>
      <BenefitsToMembersGrp>
        <TotalAmt>0</TotalAmt>
      </BenefitsToMembersGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>10976446</TotalAmt>
        <ProgramServicesAmt>4564005</ProgramServicesAmt>
        <ManagementAndGeneralAmt>6412441</ManagementAndGeneralAmt>
      </CompCurrentOfcrDirectorsGrp>
      <CompDisqualPersonsGrp>
        <TotalAmt>0</TotalAmt>
      </CompDisqualPersonsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>101612609</TotalAmt>
        <ProgramServicesAmt>94139619</ProgramServicesAmt>
        <ManagementAndGeneralAmt>7472990</ManagementAndGeneralAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>12576714</TotalAmt>
        <ProgramServicesAmt>11651773</ProgramServicesAmt>
        <ManagementAndGeneralAmt>924941</ManagementAndGeneralAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>7884878</TotalAmt>
        <ProgramServicesAmt>7304993</ProgramServicesAmt>
        <ManagementAndGeneralAmt>579885</ManagementAndGeneralAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>6838854</TotalAmt>
        <ProgramServicesAmt>6335898</ProgramServicesAmt>
        <ManagementAndGeneralAmt>502956</ManagementAndGeneralAmt>
      </PayrollTaxesGrp>
      <FeesForServicesManagementGrp>
        <TotalAmt>0</TotalAmt>
      </FeesForServicesManagementGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>1421233</TotalAmt>
        <ProgramServicesAmt>1289644</ProgramServicesAmt>
        <ManagementAndGeneralAmt>131589</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>997079</TotalAmt>
        <ManagementAndGeneralAmt>997079</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesLobbyingGrp>
        <TotalAmt>55000</TotalAmt>
        <ProgramServicesAmt>55000</ProgramServicesAmt>
      </FeesForServicesLobbyingGrp>
      <FeesForServicesProfFundraising>
        <TotalAmt>0</TotalAmt>
      </FeesForServicesProfFundraising>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>0</TotalAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>26092564</TotalAmt>
        <ProgramServicesAmt>21852128</ProgramServicesAmt>
        <ManagementAndGeneralAmt>4240436</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>38284</TotalAmt>
        <ManagementAndGeneralAmt>38284</ManagementAndGeneralAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>5708258</TotalAmt>
        <ProgramServicesAmt>4715046</ProgramServicesAmt>
        <ManagementAndGeneralAmt>993212</ManagementAndGeneralAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>12528518</TotalAmt>
        <ProgramServicesAmt>11566709</ProgramServicesAmt>
        <ManagementAndGeneralAmt>961809</ManagementAndGeneralAmt>
      </InformationTechnologyGrp>
      <RoyaltiesGrp>
        <TotalAmt>0</TotalAmt>
      </RoyaltiesGrp>
      <OccupancyGrp>
        <TotalAmt>2184067</TotalAmt>
        <ProgramServicesAmt>2029975</ProgramServicesAmt>
        <ManagementAndGeneralAmt>154092</ManagementAndGeneralAmt>
      </OccupancyGrp>
      <TravelGrp>
        <TotalAmt>173705</TotalAmt>
        <ProgramServicesAmt>139588</ProgramServicesAmt>
        <ManagementAndGeneralAmt>34117</ManagementAndGeneralAmt>
      </TravelGrp>
      <PymtTravelEntrtnmntPubOfclGrp>
        <TotalAmt>0</TotalAmt>
      </PymtTravelEntrtnmntPubOfclGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>328681</TotalAmt>
        <ProgramServicesAmt>191073</ProgramServicesAmt>
        <ManagementAndGeneralAmt>137608</ManagementAndGeneralAmt>
      </ConferencesMeetingsGrp>
      <InterestGrp>
        <TotalAmt>6289081</TotalAmt>
        <ProgramServicesAmt>6289081</ProgramServicesAmt>
      </InterestGrp>
      <PaymentsToAffiliatesGrp>
        <TotalAmt>0</TotalAmt>
      </PaymentsToAffiliatesGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>30567894</TotalAmt>
        <ProgramServicesAmt>30567894</ProgramServicesAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>2372266</TotalAmt>
        <ManagementAndGeneralAmt>2372266</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>PROFESSIONAL AND MEMBER DUES</Desc>
        <TotalAmt>347024</TotalAmt>
        <ProgramServicesAmt>168349</ProgramServicesAmt>
        <ManagementAndGeneralAmt>178675</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>TRAINING EXPENSES</Desc>
        <TotalAmt>441309</TotalAmt>
        <ProgramServicesAmt>269558</ProgramServicesAmt>
        <ManagementAndGeneralAmt>171751</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>229434464</TotalAmt>
        <ProgramServicesAmt>203130333</ProgramServicesAmt>
        <ManagementAndGeneralAmt>26304131</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>539136499</BOYAmt>
        <EOYAmt>650844390</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <PledgesAndGrantsReceivableGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </PledgesAndGrantsReceivableGrp>
      <AccountsReceivableGrp>
        <BOYAmt>13996703</BOYAmt>
        <EOYAmt>23056704</EOYAmt>
      </AccountsReceivableGrp>
      <ReceivablesFromOfficersEtcGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </ReceivablesFromOfficersEtcGrp>
      <RcvblFromDisqualifiedPrsnGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </RcvblFromDisqualifiedPrsnGrp>
      <OthNotesLoansReceivableNetGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </OthNotesLoansReceivableNetGrp>
      <InventoriesForSaleOrUseGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </InventoriesForSaleOrUseGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>7826583</BOYAmt>
        <EOYAmt>8483203</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>705671349</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>554720922</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>165669517</BOYAmt>
        <EOYAmt>150950427</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>192440166</BOYAmt>
        <EOYAmt>229880306</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <InvestmentsOtherSecuritiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </InvestmentsOtherSecuritiesGrp>
      <InvestmentsProgramRelatedGrp>
        <BOYAmt>19708072</BOYAmt>
        <EOYAmt>12415785</EOYAmt>
      </InvestmentsProgramRelatedGrp>
      <IntangibleAssetsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </IntangibleAssetsGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>12805990</BOYAmt>
        <EOYAmt>18632993</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>951583530</BOYAmt>
        <EOYAmt>1094263808</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>55202188</BOYAmt>
        <EOYAmt>54957203</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <GrantsPayableGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </GrantsPayableGrp>
      <DeferredRevenueGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </DeferredRevenueGrp>
      <TaxExemptBondLiabilitiesGrp>
        <BOYAmt>169448873</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </TaxExemptBondLiabilitiesGrp>
      <EscrowAccountLiabilityGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </EscrowAccountLiabilityGrp>
      <LoansFromOfficersDirectorsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </LoansFromOfficersDirectorsGrp>
      <MortgNotesPyblScrdInvstPropGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </MortgNotesPyblScrdInvstPropGrp>
      <UnsecuredNotesLoansPayableGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </UnsecuredNotesLoansPayableGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>510891992</BOYAmt>
        <EOYAmt>806882926</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>735543053</BOYAmt>
        <EOYAmt>861840129</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>198963706</BOYAmt>
        <EOYAmt>206493658</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>17076771</BOYAmt>
        <EOYAmt>25930021</EOYAmt>
      </DonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>216040477</BOYAmt>
        <EOYAmt>232423679</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>951583530</BOYAmt>
        <EOYAmt>1094263808</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>20162625</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>-3779423</NetUnrlzdGainsLossesInvstAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>true</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>true</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="IRS990ScheduleA">
      <SupportingOrganization509a3Ind>X</SupportingOrganization509a3Ind>
      <SupportingOrgType1Ind>X</SupportingOrgType1Ind>
      <SupportedOrganizationsCnt>1</SupportedOrganizationsCnt>
      <SupportedOrgInformationGrp>
        <SupportedOrganizationName>
          <BusinessNameLine1Txt>STATE OF CALIFORNIA</BusinessNameLine1Txt>
        </SupportedOrganizationName>
        <EIN>680284175</EIN>
        <OrganizationTypeCd>6</OrganizationTypeCd>
        <GoverningDocumentListedInd>true</GoverningDocumentListedInd>
        <SupportAmt>0</SupportAmt>
        <OtherSupportAmt>0</OtherSupportAmt>
      </SupportedOrgInformationGrp>
      <SupportedOrganizationsTotalCnt>1</SupportedOrganizationsTotalCnt>
      <SupportSumAmt>0</SupportSumAmt>
      <OtherSupportSumAmt>0</OtherSupportSumAmt>
      <Form990SchASupportingOrgGrp>
        <ListedByNameGoverningDocInd>true</ListedByNameGoverningDocInd>
        <SuprtOrgNoIRSDeterminationInd>true</SuprtOrgNoIRSDeterminationInd>
        <SupportedOrgSectionC456Ind>false</SupportedOrgSectionC456Ind>
        <SupportedOrgNotOrganizedUSInd>false</SupportedOrgNotOrganizedUSInd>
        <OrganizationChangeSuprtOrgInd>false</OrganizationChangeSuprtOrgInd>
        <SupportNonSupportedOrgInd>false</SupportNonSupportedOrgInd>
        <PaymentSubstantialContribtrInd>false</PaymentSubstantialContribtrInd>
        <LoanDisqualifiedPersonInd>false</LoanDisqualifiedPersonInd>
        <ControlledDisqualifiedPrsnInd>false</ControlledDisqualifiedPrsnInd>
        <DisqualifiedPrsnControllIntInd>false</DisqualifiedPrsnControllIntInd>
        <DisqualifiedPrsnOwnrIntInd>false</DisqualifiedPrsnOwnrIntInd>
        <ExcessBusinessHoldingsRulesInd>false</ExcessBusinessHoldingsRulesInd>
        <ContributionControllerInd>false</ContributionControllerInd>
        <ContributionFamilyInd>false</ContributionFamilyInd>
        <Contribution35ControlledInd>false</Contribution35ControlledInd>
      </Form990SchASupportingOrgGrp>
      <Form990SchAType1SuprtOrgGrp>
        <PowerAppointMajorityDirTrstInd>true</PowerAppointMajorityDirTrstInd>
        <OperateBenefitNonSuprtOrgInd>false</OperateBenefitNonSuprtOrgInd>
      </Form990SchAType1SuprtOrgGrp>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>SCHEDULE A, PART IV, SECTION A, LINE 1:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CALIFORNIA INDEPENDENT SYSTEM OPERATOR CORPORATION ("CAL ISO") WAS CREATED PURSUANT TO SPECIFIC LEGISLATION (ASSEMBLY BILL 1890 - CHAPTER 854, CALIFORNIA STATUTES OF 1996) IN WHICH THE STATE OF CALIFORNIA ASSUMED A SUBSTANTIALLY INCREASED ROLE IN PROMOTING COMPETITION IN THE SUPPLY OF ELECTRICITY IN CALIFORNIA IN ORDER TO ACCOMPLISH A MEANINGFUL IMMEDIATE REDUCTION IN THE OVERALL PRICE OF ELECTRIC SERVICE TO THE GENERAL PUBLIC THROUGHOUT CALIFORNIA. THE BOARD OF CAL ISO IS COMPOSED OF MEMBERS APPOINTED BY THE CALIFORNIA GOVERNOR AND CONFIRMED BY THE CALIFORNIA STATE SENATE.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>SCHEDULE A, PART IV, SECTION A, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>AS A GOVERNMENTAL UNIT, THE STATE OF CALIFORNIA DOES NOT HAVE AN IRS DETERMINATION LETTER CLASSIFYING IT AS A PUBLIC CHARITY UNDER SECTION 509(A)(1) OR (2) OF THE INTERNAL REVENUE CODE. THE STATE OF CALIFORNIA QUALIFIES AS A PUBLIC CHARITY UNDER SECTION 509(A)(1) BECAUSE IT QUALIFIES AS A GOVERNMENTAL UNIT.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleC documentId="IRS990ScheduleC">
      <TotalGrassrootsLobbyingGrp />
      <TotalDirectLobbyingGrp>
        <FilingOrganizationsTotalAmt>55000</FilingOrganizationsTotalAmt>
      </TotalDirectLobbyingGrp>
      <TotalLobbyingExpendGrp>
        <FilingOrganizationsTotalAmt>55000</FilingOrganizationsTotalAmt>
      </TotalLobbyingExpendGrp>
      <OtherExemptPurposeExpendGrp>
        <FilingOrganizationsTotalAmt>229379464</FilingOrganizationsTotalAmt>
      </OtherExemptPurposeExpendGrp>
      <TotalExemptPurposeExpendGrp>
        <FilingOrganizationsTotalAmt>229434464</FilingOrganizationsTotalAmt>
      </TotalExemptPurposeExpendGrp>
      <LobbyingNontaxableAmountGrp>
        <FilingOrganizationsTotalAmt>1000000</FilingOrganizationsTotalAmt>
      </LobbyingNontaxableAmountGrp>
      <GrassrootsNontaxableGrp>
        <FilingOrganizationsTotalAmt>250000</FilingOrganizationsTotalAmt>
      </GrassrootsNontaxableGrp>
      <TotLbbyngGrassrootMnsNonTxGrp />
      <TotLbbyExpendMnsLbbyngNonTxGrp />
      <AvgLobbyingNontaxableAmountGrp>
        <CurrentYearMinus3Amt>1000000</CurrentYearMinus3Amt>
        <CurrentYearMinus2Amt>1000000</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>1000000</CurrentYearMinus1Amt>
        <CurrentYearAmt>1000000</CurrentYearAmt>
        <TotalAmt>4000000</TotalAmt>
      </AvgLobbyingNontaxableAmountGrp>
      <LobbyingCeilingAmt>6000000</LobbyingCeilingAmt>
      <AvgTotalLobbyingExpendGrp>
        <CurrentYearMinus3Amt>202176</CurrentYearMinus3Amt>
        <CurrentYearMinus2Amt>70441</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>45825</CurrentYearMinus1Amt>
        <CurrentYearAmt>55000</CurrentYearAmt>
        <TotalAmt>373442</TotalAmt>
      </AvgTotalLobbyingExpendGrp>
      <AvgGrassrootsNontaxableGrp>
        <CurrentYearMinus3Amt>250000</CurrentYearMinus3Amt>
        <CurrentYearMinus2Amt>250000</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>250000</CurrentYearMinus1Amt>
        <CurrentYearAmt>250000</CurrentYearAmt>
        <TotalAmt>1000000</TotalAmt>
      </AvgGrassrootsNontaxableGrp>
      <GrassrootsCeilingAmt>1500000</GrassrootsCeilingAmt>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="IRS990ScheduleD">
      <ArtPublicExhibitionAmountsGrp />
      <HeldWorksArtGrp />
      <CYMinus3YrEndwmtFundGrp />
      <CYMinus4YrEndwmtFundGrp />
      <LandGrp>
        <OtherCostOrOtherBasisAmt>10561100</OtherCostOrOtherBasisAmt>
        <BookValueAmt>10561100</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
        <OtherCostOrOtherBasisAmt>162251659</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>76813729</DepreciationAmt>
        <BookValueAmt>85437930</BookValueAmt>
      </BuildingsGrp>
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>0</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>0</DepreciationAmt>
        <BookValueAmt>0</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>33436460</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>28016014</DepreciationAmt>
        <BookValueAmt>5420446</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>499422130</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>449891179</DepreciationAmt>
        <BookValueAmt>49530951</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>150950427</TotalBookValueLandBuildingsAmt>
      <FederalIncomeTaxLiabilityAmt>0</FederalIncomeTaxLiabilityAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>EMPLOYEE BENEFIT PLAN OBLIGATI</Desc>
        <Amt>4111519</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>DUE TO MARKET PARTICIPANTS</Desc>
        <Amt>617937452</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>DEFERRED OPEB OBLIGATION</Desc>
        <Amt>10388955</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>BOND LIABILITIES</Desc>
        <Amt>174445000</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>806882926</TotalLiabilityAmt>
      <TotalRevEtcAuditedFinclStmtAmt>245817666</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>-3779423</NetUnrealizedGainsInvstAmt>
      <RevenueNotReportedAmt>-3779423</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>249597089</RevenueSubtotalAmt>
      <TotalRevenuePerForm990Amt>249597089</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>229434464</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesSubtotalAmt>229434464</ExpensesSubtotalAmt>
      <TotalExpensesPerForm990Amt>229434464</TotalExpensesPerForm990Amt>
    </IRS990ScheduleD>
    <IRS990ScheduleJ documentId="IRS990ScheduleJ">
      <IndependentConsultantInd>X</IndependentConsultantInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>false</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>true</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>false</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>false</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>false</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>false</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>false</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>false</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>false</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Stephen Berberich</PersonNm>
        <TitleTxt>CEO EMERITUS</TitleTxt>
        <BaseCompensationFilingOrgAmt>71401</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>877679</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>122696</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>54749</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>12777</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>1139302</TotalCompensationFilingOrgAmt>
        <CompReportPrior990FilingOrgAmt>116021</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Keith Casey</PersonNm>
        <TitleTxt>VP, MKT AND INFRASTRUCTURE DEV</TitleTxt>
        <BonusFilingOrganizationAmount>147496</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>27993</OtherCompensationFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>175489</TotalCompensationFilingOrgAmt>
        <CompReportPrior990FilingOrgAmt>27993</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Roger Collanton</PersonNm>
        <TitleTxt>VP, GEN CNSL &amp; CHIEF COMP. OFF</TitleTxt>
        <BaseCompensationFilingOrgAmt>348879</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>346972</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>104917</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>85478</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>29350</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>915596</TotalCompensationFilingOrgAmt>
        <CompReportPrior990FilingOrgAmt>38110</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Stacey Crowley</PersonNm>
        <TitleTxt>VP, EXTERNAL AFFAIRS</TitleTxt>
        <BaseCompensationFilingOrgAmt>323906</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>316691</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>54423</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>69181</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>34213</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>798414</TotalCompensationFilingOrgAmt>
        <CompReportPrior990FilingOrgAmt>25064</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Petar Ristanovic</PersonNm>
        <TitleTxt>VP, Technology</TitleTxt>
        <BonusFilingOrganizationAmount>377194</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>409573</OtherCompensationFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>786767</TotalCompensationFilingOrgAmt>
        <CompReportPrior990FilingOrgAmt>44622</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Mark Rothleder</PersonNm>
        <TitleTxt>SR. VP &amp; CHIEF OPERATING OFF</TitleTxt>
        <BaseCompensationFilingOrgAmt>441934</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>401792</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>144220</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>124231</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>49395</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>1161572</TotalCompensationFilingOrgAmt>
        <CompReportPrior990FilingOrgAmt>60164</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Eric Schmitt</PersonNm>
        <TitleTxt>VP, Operations</TitleTxt>
        <BaseCompensationFilingOrgAmt>139949</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>324557</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>43130</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>32682</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>12653</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>552971</TotalCompensationFilingOrgAmt>
        <CompReportPrior990FilingOrgAmt>32910</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Ryan Seghesio</PersonNm>
        <TitleTxt>VP, CFO &amp; TREASURER</TitleTxt>
        <BaseCompensationFilingOrgAmt>316691</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>242974</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>53846</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>73829</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>44697</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>732037</TotalCompensationFilingOrgAmt>
        <CompReportPrior990FilingOrgAmt>26109</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Jodi Ziemathis</PersonNm>
        <TitleTxt>VP, Human Resources</TitleTxt>
        <BaseCompensationFilingOrgAmt>281159</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>223960</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>59683</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>71297</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>46119</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>682218</TotalCompensationFilingOrgAmt>
        <CompReportPrior990FilingOrgAmt>23380</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Khaled Abdul-Rahman</PersonNm>
        <TitleTxt>VP, PWR SYSTEMS &amp; MARKET TECH</TitleTxt>
        <BaseCompensationFilingOrgAmt>296828</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>120989</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>28286</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>60525</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>32436</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>539064</TotalCompensationFilingOrgAmt>
        <CompReportPrior990FilingOrgAmt>3913</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Janet Morris</PersonNm>
        <TitleTxt>EXEC DIR., PROGRAM &amp; APP MGMT</TitleTxt>
        <BaseCompensationFilingOrgAmt>265646</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>91663</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>18495</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>38500</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>27200</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>441504</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Burton Gross</PersonNm>
        <TitleTxt>Deputy General Counsel - Legal</TitleTxt>
        <BaseCompensationFilingOrgAmt>296516</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>115907</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>1637</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>37700</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>29236</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>480996</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Anthony Ivancovich</PersonNm>
        <TitleTxt>DEPUTY GEN. CNSL. - REGULATORY</TitleTxt>
        <BaseCompensationFilingOrgAmt>296599</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>119222</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>13584</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>43450</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>34462</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>507317</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Anna McKenna</PersonNm>
        <TitleTxt>VP, MKT POLICY AND PERFORMANCE</TitleTxt>
        <BaseCompensationFilingOrgAmt>303285</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>124117</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>15571</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>54736</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>31334</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>529043</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Neil Millar</PersonNm>
        <TitleTxt>VP, INFRASTRUCTURE &amp; OPS PLAN</TitleTxt>
        <BaseCompensationFilingOrgAmt>323796</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>234652</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>42194</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>72938</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>45232</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>718812</TotalCompensationFilingOrgAmt>
        <CompReportPrior990FilingOrgAmt>16653</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Hugo Frech</PersonNm>
        <TitleTxt>EXEC.DIR, IT IFS ARC &amp; INFOSEC</TitleTxt>
        <BaseCompensationFilingOrgAmt>236699</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>57294</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>2474</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>36970</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>30202</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>363639</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Elliot Mainzer</PersonNm>
        <TitleTxt>PRESIDENT &amp; CEO</TitleTxt>
        <BaseCompensationFilingOrgAmt>642768</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>144083</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>47570</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>77350</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>26417</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>938188</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Gregory Cook</PersonNm>
        <TitleTxt>EXEC. DIR., MARKET &amp; INFRA</TitleTxt>
        <BaseCompensationFilingOrgAmt>267184</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>98337</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>4129</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>38500</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>42045</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>450195</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Eric Hildebrandt</PersonNm>
        <TitleTxt>EXEC. DIR., MARKET MONITORING</TitleTxt>
        <BaseCompensationFilingOrgAmt>265448</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>72999</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>5210</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>38500</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>23851</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>406008</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Joanne Serina</PersonNm>
        <TitleTxt>VP, STAKEHOLDER ENGAGEMENT</TitleTxt>
        <BaseCompensationFilingOrgAmt>245842</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>58754</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>6241</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>35473</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>31228</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>377538</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Dede Subakti</PersonNm>
        <TitleTxt>VP, SYSTEMS OPERATIONS</TitleTxt>
        <BaseCompensationFilingOrgAmt>276444</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>92991</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>13520</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>47550</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>29417</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>459922</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>John Anders</PersonNm>
        <TitleTxt>ASST GENERAL COUNSEL - LEGAL</TitleTxt>
        <BaseCompensationFilingOrgAmt>274713</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>107661</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>2064</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>45245</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>40399</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>470082</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Daniel Shonkwiler</PersonNm>
        <TitleTxt>ASST GEN CNSL - CORP &amp; LITIG</TitleTxt>
        <BaseCompensationFilingOrgAmt>270501</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>69000</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>17492</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>38500</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>39380</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>434873</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE J, PART I, LINE 4B:</FormAndLineReferenceDesc>
        <ExplanationTxt>IN 2021, THE INDIVIDUALS LISTED BELOW PARTICIPATED IN A SUPPLEMENTAL NON-QUALIFIED RETIREMENT PLAN. CALIFORNIA ISO CONTRIBUTED THE FOLLOWING AMOUNTS TO THE PLAN WHICH ARE INCLUDED IN THE DEFERRED COMPENSATION REPORTED ON SCHEDULE J, PART II: STEPHEN BERBERICH - CEO EMERITUS $116,021 KEITH CASEY - VP, MKT &amp; INFRASTRUCTURE DEV. $ 27,993 ROGER COLLANTON - VP, GEN CNSL &amp; CHIEF COMPLIANCE OFFICER $ 43,126 STACEY CROWLEY - VP, EXTERNAL AND CUSTOMER AFFAIRS $ 27,350 NEIL MILLAR - VP, INSTRASTRUSTURE &amp; OPERATIONS PLANNING $ 19,383 PETAR RISTANOVIC - VP, TECHNOLOGY $ 44,622 MARK ROTHLEDER - SR VP &amp; CHIEF OPERATING OFFICER $ 71,426 ERIC SCHMITT - VP, OPERATIONS $ 32,910 RYAN SEGHESIO - VP, CHIEF FINANCIAL OFFICER &amp; TREASURER $ 28,133 JODI ZIEMATHIS - VP, HUMAN RESOURCES $ 24,001 ELLIOTT MAINZER - PRESIDENT &amp; CEO $ 2,000 KHALED ABDUL-RAHMAN - VP, PWR SYSTEMS &amp; MARKET TECH $ 4,909 ANNA MCKENNA - VP, MARKET POLICY &amp; PERFORMANCE $ 1,391</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART I, LINE 1 &amp; FORM 990, PART III, LINE 1:</FormAndLineReferenceDesc>
        <ExplanationTxt>CALIFORNIA INDEPENDENT SYSTEM OPERATOR CORPORATION'S (CALIFORNIA ISO) MISSION STATEMENT TO ENSURE EFFICIENT USE AND RELIABLE OPERATION OF THE ELECTRIC TRANSMISSION GRID OPERATED BY THE CALIFORNIA ISO, CONSISTENT WITH THE CALIFORNIA PUBLIC UTILITY CODE, CHAPTER 2.3 PART 1, DIVISION 1. THE ISO DOES NOT OWN TRANSMISSION FACILITIES, BUT IT CONTROLS THE OPERATION OF A NETWORK OF TRANSMISSION FACILITIES LOCATED THROUGHOUT MOST OF CALIFORNIA, AND ALSO CERTAIN TRANSMISSION FACILITIES LOCATED IN NEVADA, THE OWNERS OF WHICH HAVE TRANSFERRED OPERATIONAL CONTROL OF THE CALIFORNIA ISO. FOR THE BENEFIT OF OUR CUSTOMERS, WE: - OPERATE THE GRID RELIABLY AND EFFICIENTLY; - PROVIDE FAIR AND OPEN TRANSMISSION ACCESS; - PROMOTE ENVIRONMENTAL STEWARDSHIP; AND - FACILITATE EFFECTIVE MARKETS AND PROMOTE INFRASTRUCTURE DEVELOPMENT, ALL THROUGH THE PROVISION OF TIMELY AND ACCURATE INFORMATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD OF CALIFORNIA ISO IS COMPOSED OF MEMBERS APPOINTED BY THE CALIFORNIA GOVERNOR AND CONFIRMED BY THE CALIFORNIA STATE SENATE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 IS REVIEWED BY THE VP, GENERAL COUNSEL AND CHIEF COMPLIANCE OFFICER, VP, CHIEF FINANCIAL OFFICER, CONTROLLER, ASST CONTROLLER, DIRECTOR OF COMMUNICATIONS, LEAD COUNSEL - CORPORATE, VP, HR. THE FORM 990 IS PROVIDED TO THE BOARD OF GOVERNORS PRIOR TO FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C:</FormAndLineReferenceDesc>
        <ExplanationTxt>ANNUALLY, EMPLOYEES ARE REQUIRED TO ATTEND THE ALL EMPLOYEE TRAINING WHICH INCLUDES: CODE OF CONDUCT, SECURITY AWARENESS, EMPLOYEE RELATIONS SAFETY AND HARASSMENT PREVENTION. EMPLOYEES ARE REQUIRED ANNUALLY TO SIGN A FORM TO DISCLOSE IF ANY POTENTIAL CONFLICT OF INTEREST EXISTS THAT MAY AFFECT THE EMPLOYEE'S ABILITY TO PERFORM HIS/HER JOB. LEAD COUNSEL - CORPORATE REVIEWS ALL DISCLOSURES TO ENSURE THAT ANY ACTUAL OR POTENTIAL CONFLICTS ARE MITIGATED. THIS PROCESS IS REVIEWED ANNUALLY BY OUR INTERNAL AUDIT FUNCTION (AUDIT AND ADVISORY SERVICES).</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINES 15A &amp; 15B:</FormAndLineReferenceDesc>
        <ExplanationTxt>SINCE 1998, THE BOARD OF GOVERNORS OF THE ISO HAS WORKED CLOSELY WITH NATIONALLY RECOGNIZED HUMAN RESOURCES AND EXECUTIVE COMPENSATION ADVISORY FIRMS TO DEVELOP AN APPROPRIATE COMPENSATION PROGRAM FOR THE EXECUTIVES OF THE ISO. COMPETITIVE COMPENSATION FOR ALL NON-OFFICER EMPLOYEES IS ALSO ESTABLISHED BY ANNUAL THIRD-PARTY COMPENSATION SURVEYS. THESE FIRMS HELPED THE BOARD OF GOVERNORS DETERMINE THE APPROPRIATE LEVELS OF EXECUTIVE COMPENSATION BY COMPILING EXTENSIVE MARKET DATA CONCERNING EXECUTIVE COMPENSATION FOR POSITIONS SIMILAR TO EXECUTIVE POSITIONS AT THE ISO. THESE FIRMS HISTORICALLY HAVE MET WITH THE BOARD OF GOVERNORS AT LEAST ANNUALLY TO PRESENT EXECUTIVE COMPENSATION MARKET DATA, MAKE RECOMMENDATIONS AND OTHERWISE DISCUSS EXECUTIVE COMPENSATION ISSUES. THE BOARD RELIED ON THE COMPARABILITY DATA TO DETERMINE THE APPROPRIATE COMPENSATION, APPROVED THE COMPENSATION, AND DOCUMENTED THE APPROVAL IN ITS MINUTES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION MAKES AVAILABLE ON ITS WEBSITE (ACCESSIBLE BY THE PUBLIC) THE FINANCIAL STATEMENTS, THE CODE OF CONDUCT POLICY, THE TARIFF (RULES OF THE ISO MARKET), THE ARTICLES OF INCORPORATION (AND ALL AMENDMENTS), THE CORPORATE BY-LAWS AND THE MINUTES OF THE BOARD OF GOVERNORS' MEETINGS (EXCEPT FOR THE EXECUTIVE SESSIONS). THE DOCUMENTS ARE ALSO AVAILABLE UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART IX LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION:CONSULTANTS TOTAL FEES:4946582</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART IX LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION:RECRUITMENT / STAFFING TOTAL FEES:7282673</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART IX LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION:GIP / OTHER TOTAL FEES:13863309</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>STATE OF CALIFORNIA</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <EIN>680284175</EIN>
        <PrimaryActivitiesTxt>GOVERNMENT</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>CA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>false</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>false</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>false</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>false</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>false</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>false</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>false</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>false</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>
