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        <OfficerInd>X</OfficerInd>
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      <Form990PartVIISectionAGrp>
        <PersonNm>ANDRE PORTER</PersonNm>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <OtherCompensationAmt>58935</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>ALLEGRA NOTTAGE</PersonNm>
        <TitleTxt>SVP - HR &amp; CHIEF DIVERSITY OFFICER</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>ERIC MILLER</PersonNm>
        <TitleTxt>VP &amp; CHIEF INFO SECURITY</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>AUBREY JOHNSON</PersonNm>
        <TitleTxt>VP - SYSTEM PLANNING</TitleTxt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>59086</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>TODD HILLMAN</PersonNm>
        <TitleTxt>SVP &amp; CHIEF CUSTOMER OFFICER</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>65294</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>RICHARD WAYNE SCHUG</PersonNm>
        <TitleTxt>VP - STRAT &amp; BUS DVLPMNT (THRU 3/24)</TitleTxt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>9267</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>RENUKA CHATTERJEE</PersonNm>
        <TitleTxt>VP - OPERATIONS</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>59153</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>TIMOTHY CAISTER</PersonNm>
        <TitleTxt>VP - LEGAL FED REGULATORY AFFAIRS</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>30242</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>NIRAV SHAH</PersonNm>
        <TitleTxt>VP - CHIEF DIGITAL &amp; INFO (BEG 5/24)</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>42275</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>KRISTINA TRIDICO</PersonNm>
        <TitleTxt>DEPUTY GENERAL COUNSEL</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>BRIAN TULLOH</PersonNm>
        <TitleTxt>E.D. STRAT. COMMS. &amp; POLICY COORD.</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>DARYL BROWN</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>SCOTT WRIGHT</PersonNm>
        <TitleTxt>E.D. RESOURCE PLANNING</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>ERIC STEPHENS</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>JODY DAVIDS</PersonNm>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>MELISSA SEYMOUR</PersonNm>
        <TitleTxt>FORMER OFFICER</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>RICHARD DOYING</PersonNm>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
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          <BusinessName>
            <BusinessNameLine1Txt>GE ENERGY MANAGEMENT SERVICES LLC</BusinessNameLine1Txt>
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        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>10865 WILLOWS ROAD</AddressLine1Txt>
            <CityNm>REDMOND</CityNm>
            <StateAbbreviationCd>WA</StateAbbreviationCd>
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        </ContractorAddress>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
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        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>3659 WESTMERRE PKWY</AddressLine1Txt>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>POTOMAC ECONOMICS</BusinessNameLine1Txt>
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          <USAddress>
            <AddressLine1Txt>9990 FAIRFAX BLVD</AddressLine1Txt>
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        </ContractorAddress>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>TECHNOLOGY SITE PLANNERS INC</BusinessNameLine1Txt>
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        <ContractorAddress>
          <USAddress>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>UTILICAST</BusinessNameLine1Txt>
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        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>PO BOX 38</AddressLine1Txt>
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      <ProgramServiceRevenueGrp>
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        <PersonNm>KRISTINA TRIDICO</PersonNm>
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        <PersonNm>SCOTT WRIGHT</PersonNm>
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        <PersonNm>TODD RABA</PersonNm>
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        <PersonNm>PHYLLIS CURRIE</PersonNm>
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        <PersonNm>NANCY LANGE</PersonNm>
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        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>46250</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 1A</FormAndLineReferenceDesc>
        <ExplanationTxt>CHARTER TRAVEL - MIDCONTINENT INDEPENDENT SYSTEM OPERATOR, INC. USED CHARTER TRAVEL DURING CALENDAR YEAR 2024. NON-QUANTITATIVE FACTORS, AS WELL AS THE COST BENEFIT, WERE CONSIDERED FOR EACH TRIP. ALL EMPLOYEES ARE ABLE TO USE CHARTER TRAVEL. CHARTER TRAVEL IS NOT INCLUDED IN TAXABLE INCOME AS IT IS A BUSINESS EXPENSE. FIRST CLASS TRAVEL - EXCEPTIONS FOR FIRST CLASS TRAVEL CAN BE GRANTED BY OFFICERS. DURING CALENDAR YEAR 2024, DUE TO DISTANCE, FIVE OFFICERS TRAVELED FIRST CLASS TO ATTEND CONFERENCES HELD IN EUROPE AND ASIA. TRAVEL IS NOT INCLUDED IN TAXABLE INCOME AS IT IS A BUSINESS EXPENSE. TRAVEL FOR COMPANIONS - WHEN SPOUSES ARE INVITED BY THE BOARD OR CEO TO ATTEND EVENTS IN CONJUNCTION WITH BUSINESS MEETINGS, THE EXPENSES OF THE SPOUSES ARE REIMBURSABLE. DURING CALENDAR YEAR 2024, TWO DIRECTOR'S COMPANIONS WERE INVITED TO A HOLIDAY PARTY. TRAVEL WAS NOT REPORTED AS TAXABLE INCOME. HOUSING ALLOWANCE OR RESIDENCE FOR PERSONAL USE - RESIDENCE (APARTMENT) IN CARMEL IS AVAILABLE FOR OFFICERS THAT DO NOT LIVE IN CARMEL, IN LIEU OF A HOTEL, AFTER A COST BENEFIT ANALYSIS WAS DONE WHICH REVEALED IT WAS MORE COST EFFECTIVE. HOUSING IS NOT INCLUDED IN TAXABLE INCOME AS IT IS A BUSINESS EXPENSE</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 4A:</FormAndLineReferenceDesc>
        <ExplanationTxt>UNDER AN INVOLUNTARY TERMINATION DUE TO POSITION ELIMINATION FROM A JOB RESTRUCTURING, REDUCTION IN FORCE, OR REORGANIZATION, AN EMPLOYEE IS ELIGIBLE FOR SEVERANCE BENEFITS INCLUDING, SALARY CONTINUATION, PAYMENT OF COBRA, AND OUTPLACEMENT SERVICES. SEVERANCE PAYMENTS ARE DETERMINED BY A BASELINE SEVERANCE, I.E., THE EMPLOYEE'S GRADE AT MISO AS OF THE SEVERANCE DATE, AND YEARS OF CONSECUTIVE SERVICE. THE EMPLOYEE IS REQUIRED TO SIGN A RELEASE IN ORDER TO RECEIVE THE SEVERANCE COMPENSATION AND BENEFITS. SEVERANCE PAYMENTS WERE MADE DURING CALENDAR YEAR 2024 TO THE FOLLOWING LISTED PERSONS IN PART VII: RICHARD DOYING - $1,126,878 MELISSA SEYMOUR - $38,617</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 4B:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CONTRIBUTIONS CREDITED TO A PARTICIPANT'S SERP ACCOUNT FOR A GIVEN PLAN YEAR SHALL BE EQUAL TO THE FOLLOWING AMOUNTS: A. THE AMOUNT OF EMPLOYER CONTRIBUTIONS CREDITED TO A PARTICIPANT'S ACCOUNT FOR A GIVEN PLAN YEAR SHALL BE EQUAL TO 15% OF THE PARTICIPANT'S PLAN YEAR COMPENSATION. B. EMPLOYER MAY, AT ITS SOLE DISCRETION, MAKE ADDITIONAL CONTRIBUTIONS FOR ANY ONE PARTICIPANT OR ALL PARTICIPANTS. C. THE CONTRIBUTION FOR CEO COMPENSATION SHALL BE 20% OF PLAN YEAR COMPENSATION. FOR THE PURPOSE OF DETERMINING THE EMPLOYER CONTRIBUTION, THE PARTICIPANT'S PLAN YEAR COMPENSATION SHALL BE PRORATED FOR A PARTIAL PLAN YEAR OF ACTIVE PARTICIPATION. THE EMPLOYER MAY, AT ITS SOLE DISCRETION, MAKE ADDITIONAL CONTRIBUTIONS FOR ANY ONE PARTICIPANT OR ALL PARTICIPANTS OF THE PLAN YEAR FOR WHICH THE CONTRIBUTIONS ARE MADE. THE FOLLOWING INDIVIDUAL LISTED ON PART VII RECEIVED SUPPLEMENTAL NON-QUALIFIED PLAN PAYMENTS DURING THE CALENDAR YEAR: RICHARD WAYNE SCHUG - $238,194</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 7:</FormAndLineReferenceDesc>
        <ExplanationTxt>EVERY REGULAR FULL TIME EMPLOYEE HAS THE OPPORTUNITY TO EARN AN INCENTIVE AWARD BASED ON THE ACHIEVEMENT OF CORPORATE GOALS. WHEN ELIGIBILITY IS ESTABLISHED, A TARGET PAYOUT FOR SHORT TERM INCENTIVE PERFORMANCE IS ESTABLISHED FOR THE EMPLOYEE. THIS TARGET MAY DEPEND ON A NUMBER OF FACTORS INCLUDING THE EMPLOYEE'S ROLE IN THE ORGANIZATION, THE EMPLOYEE'S IMPACT ON ACHIEVING THE LONG TERM GOALS, OR MARKET FACTORS. THESE TARGETS MAY BE ADJUSTED FOR INDIVIDUAL EMPLOYEES AT THE DISCRETION OF THE BOARD OR THE CHIEF EXECUTIVE OFFICER FOR NON-OFFICER PLAN PARTICIPANTS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleL documentId="RetDoc1042800001">
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1Txt>RWS STRATEGIES INC</BusinessNameLine1Txt>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>FORMER VP - STRAT &amp; BUS DVLPMT OWNS MORE THAN 35% OF RWS STRATEGIES, INC.</RelationshipDescriptionTxt>
        <TransactionAmt>175200</TransactionAmt>
        <TransactionDesc>CONSULTING SERVICES</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
    </IRS990ScheduleL>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBERS OR STOCKHOLDERS MEMBER CAN BE A REPRESENTATIVE OF ONE ENTITY OR MAY BE A SINGLE MEMBERSHIP REPRESENTING SEVERAL ENTITIES THAT SHARE A MEMBERSHIP AND HOLD A SINGLE VOTE. APPLICANTS MAY JOIN ONE OF TEN SECTORS: TRANSMISSION OWNER; INDEPENDENT POWER PRODUCERS AND EXEMPT WHOLESALE GENERATORS; POWERMARKETERS AND BROKERS; MUNICIPALS, COOPERATIVES, AND TRANSMISSION DEPENDENT UTILITIES; PUBLIC CONSUMER ADVOCATES; STATE REGULATORY AUTHORITIES; ENVIRONMENTAL; ELIGIBLE END USE CUSTOMERS; COMPETITIVE TRANSMISSION DEVELOPERS; AFFILIATES OR COORDINATING MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>POWER TO ELECT OR APPOINT MEMBERS ARTICLE TWO, SECTION V(B)(5) OF THE TRANSMISSION OWNERS AGREEMENT SETS OUT THE VOTING RIGHTS OF ALL MEMBERS OF MIDCONTINENT INDEPENDENT SYSTEM OPERATOR, INC. MEMBERS ARE DEFINED IN THE TRANSMISSION OWNERS AGREEMENT AS A PERSON OR BUSINESS ENTITY WHICH IS (I) AN ELIGIBLE CUSTOMER, AS DEFINED IN THE TARIFF, OR (II) AN OWNER, AS DEFINED IN THE TRANSMISSION OWNERS AGREEMENT, AND WHICH PAYS TO MIDCONTINENT INDEPENDENT SYSTEM OPERATOR, INC. THE NON-REFUNDABLE MEMBERSHIP FEES</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>PROCESS TO REVIEW THE FORM 990 AN OUTSIDE ACCOUNTING FIRM PREPARES THE RETURN BASED ON INFORMATION PROVIDED BY THE FILING ORGANIZATION. THE CFO, PRESIDENT &amp; CEO, AND LEGAL DEPARTMENT COMPLETE THE INITIAL REVIEW. THE BOARD OF DIRECTORS IS THEN PRESENTED WITH COPIES AND ARE GIVEN THE OPPORTUNITY TO ASK QUESTIONS AND PROVIDE COMMENTS TO THE EXECUTIVE TEAM BEFORE THE RETURN IS FILED WITH THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>MONITORING AND ENFORCEMENT OF COMPLIANCE WITH CONFLICT OF INTEREST CONFLICTS OF INTEREST ARE ADDRESSED IN BOTH THE MIDCONTINENT INDEPENDENT SYSTEM OPERATOR, INC. (MISO) EMPLOYEE HANDBOOK AS WELL AS IN THE STANDARDS OF CONDUCT, FOUND IN THE TRANSMISSION OWNERS AGREEMENT, WHICH IS PART OF MISO'S TARIFF. THE HANDBOOK IS REVIEWED AT NEW HIRE ORIENTATION AND ALL NEW HIRES VERIFY THAT THEY HAVE READ AND UNDERSTAND THE HANDBOOK. THE HANDBOOK IS ALSO PART OF MISO'S ANNUAL RECERTIFICATION PROCESS, IN WHICH ALL EMPLOYEES, ON AN ANNUAL BASIS, CERTIFY THAT THEY HAVE REVIEWED THE HANDBOOK AND AGREE TO COMPLY WITH THE HANDBOOK (INCLUDING ITS CONFLICT OF INTEREST PROVISIONS) AND OTHER MISO POLICIES. EACH MEMBER OF MISO'S BOARD OF DIRECTORS RECEIVES ANNUAL TRAINING ON THE STANDARDS OF CONDUCT AND CERTIFIES THAT THEY ARE COMPLIANT WITH THE STANDARDS OF CONDUCT, INCLUDING THE CONFLICT OF INTEREST PROVISIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>PROCESS FOR DETERMINING COMPENSATION THE BOARD RETAINS THE SERVICE OF EXPERT OUTSIDE EXECUTIVE COMPENSATION CONSULTANTS ('THE CONSULTANTS') IN THE MARKET REVIEW OF OFFICER COMPENSATION. ANNUALLY, THE CONSULTANTS PERFORM A FULL AND INDEPENDENT STUDY OF ALL OFFICER TOTAL RENUMERATION COMPENSATION (BASE PLUS INCENTIVES PLUS BENEFITS). THE CONSULTANTS CONSIDER THE LEVEL OF COMPENSATION RELATIVE TO THE DUTIES PERFORMED; THE CURRENT COMPETITIVE MARKET FOR SIMILAR SKILLS, KNOWLEDGE, AND RESPONSIBILITY; AND OTHER STRATEGIC NEEDS IDENTIFIED BY THE CEO AND BOARD OF DIRECTORS. THE CONSULTANTS PREPARE AND DELIVER A FULL DETAILED COMPENSATION MARKET DATA REPORT TO THE HUMAN RESOURCES COMMITTEE BOARD OF DIRCTORS ('HRC'). THIS REPORT INCLUDES RECOMMENDATIONS FOR DIRECT COMPENSATION CHANGES. THE CEO COMBINES THE MARKET DATA COMPENSATION WITH EVALUATIONS OF OFFICER PERFORMANCE TO RECOMMEND APPROPRIATE COMPENSATION LEVELS TO THE BOARD OF DIRECTORS FOR APPROVAL. THE CONSULTANTS PREPARE AND DELIVER A FULL DETAILED COMPENSATION MARKET DATA REPORT TO THE HRC FOR THE CEO. THE HRC COMBINES THE MARKET DATA COMPENSATION, EVALUATION OF PERFORMANCE, AND RECOMMENDATION FOR APPROPRIATE COMPENSATION LEVELS TO THE HRC FOR APPROVAL. ANNUALLY THE CONSULTANT PREPARES A LETTER OF 'REASONABLENESS' OF THE TOTAL REMUNERATION PACKAGE FOR OFFICERS OF THE COMPANY. THIS LETTER IS CONSISTENT WITH THE GUIDELINES OF SECTION 4958 OF THE INTERNAL REVENUE CODE. THIS LETTER CERTIFIES THAT IN THE 'REASONED OPINION' OF THE CONSULTANT AS AN 'INDEPENDENT EVALUATION EXPERT' THE COMPENSATION AND BENEFITS PROVIDED TO THE OFFICERS REPRESENT 'REASONABLE COMPENSATION'. THE HRC REVIEWS METRICS RESULTS FROM MIDCONTINENT INDEPENDENT SYSTEM OPERATOR, INC.'S SHORT-TERM INCENTIVE PLANS. NO INCENTIVES ARE PAID UNTIL RECOMMENDED BY THE HRC AND APPROVED BY THE BOARD. THE HRC REVIEWS AND RECOMMENDS ANY NEW OR MODIFIED EMPLOYMENT CONTRACTS WITH THE PRESIDENT, CEO AND OFFICERS, INCLUDING RETENTION AGREEMENTS WHICH THEN MUST BE APPROVED BY THE BOARD. FROM TIME TO TIME, THE HRC WILL RETAIN THE SERVICES OF OUTSIDE CONSULTANTS TO EVALUATE AND MAKE RECOMMENDATIONS TO THE LEVEL AND TYPE OF SPECIFIC COMPENSATION AND BENEFIT ITEMS. THE HRC ROUTINELY REPORTS TO AND, IF REQUIRED, OBTAINS APPROVAL FROM THE FULL BOARD ON THESE MATTERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>PROCESS FOR MAKING DOCUMENTS AVAILABLE TO THE PUBLIC THE MIDCONTINENT INDEPENDENT SYSTEM OPERATOR, INC.'S GOVERNING DOCUMENTS CAN BE FOUND ON OUR WEBSITE UNDER THE 'LEGAL' TAB. THESE DOCUMENTS ARE THE TARIFF AND THE TRANSMISSION OWNERS AGREEMENT WHICH INCLUDES THE COMPANY'S STANDARDS OF CONDUCT (APPENDIX A) AND THE COMPANY'S BYLAWS (APPENDIX F). THESE DOCUMENTS ARE ALSO FILED WITH AND AVAILABLE ON THE FERC'S WEBSITE AT WWW.FERC.GOV IN THE LIBRARY. THE FINANCIAL STATEMENTS OF MIDCONTINENT INDEPENDENT SYSTEM OPERATOR, INC. ARE CONTAINED IN THE COMPANY'S ANNUAL REPORT WHICH IS ALSO LOCATED ON OUR WEBSITE AT WWW.MISOENERGY.ORG.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>PROFESSIONAL SERVICES: PROGRAM SERVICE EXPENSES 67,104,490. MANAGEMENT AND GENERAL EXPENSES 6,774,891. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 73,879,381.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>