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        <BusinessNameLine1>ELECTRIC RELIABILITY COUNCIL OF TEXAS INC</BusinessNameLine1>
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        <State>TX</State>
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        <NamePerson>Sainath Moorty</NamePerson>
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      <Form990ScheduleJPartII>
        <NamePerson>Adam Martinez</NamePerson>
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      <Form990ScheduleJPartII>
        <NamePerson>Matthew Mereness</NamePerson>
        <BaseCompensationFilingOrg>133438</BaseCompensationFilingOrg>
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        <BonusFilingOrg>66565</BonusFilingOrg>
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      <Form990ScheduleJPartIII>
        <Identifier>SchJ_P01_S00_L07</Identifier>
        <ReturnReference>Schedule J, Part I, Line 7</ReturnReference>
        <Explanation>ERCOT maintains an employee recognition award program whereby employees can receive one or more awards during the course of the year up to $1,000 each for exemplary performance. On rare occasions, individual performance may justify awards which exceed $1,000, and these awards require approval of the Chief Executive Officer.</Explanation>
      </Form990ScheduleJPartIII>
    </IRS990ScheduleJ>
    <IRS990ScheduleL documentId="R000004" softwareId="11000129" softwareVersion="v1.00">
      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NameBusiness>
            <BusinessNameLine1>Brazos Electric Power Cooperative Inc</BusinessNameLine1>
          </NameBusiness>
        </NameOfInterestedPerson>
        <Relationship>See Part V Below</Relationship>
        <AmountOfTransaction>126685022</AmountOfTransaction>
        <DescriptionOfTransaction>See Part V Below</DescriptionOfTransaction>
        <SharingOfRevenues>0</SharingOfRevenues>
      </Form990ScheduleLPartIV>
      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NameBusiness>
            <BusinessNameLine1>Star Electricity LLC</BusinessNameLine1>
          </NameBusiness>
        </NameOfInterestedPerson>
        <Relationship>See Part V Below</Relationship>
        <AmountOfTransaction>123796</AmountOfTransaction>
        <DescriptionOfTransaction>See Part V Below</DescriptionOfTransaction>
        <SharingOfRevenues>0</SharingOfRevenues>
      </Form990ScheduleLPartIV>
      <Form990ScheduleLPartV>
        <Identifier>SchL_P04_S00_L00</Identifier>
        <ReturnReference>Schedule L, Part IV</ReturnReference>
        <Explanation>(1)(b) Clifton Karnei was a 2011 Board Member (Cooperative Segment) of ERCOT and also an officer of Brazos Electric Power Cooperative, Inc. (1)(d) Payment of governmentally-approved tariff, ancillary service fees, and membership fees. (2)(b) Marcie Zlotnik was a 2011 Board Member (Independent Retail Electric Providers Segment) of ERCOT and also an officer of StarTex Power. (2)(d) Payment of ancillary service fees and membership fees. Similar to the disclosures above, certain Board Members (particularly the directors representing Corporate Member Segments) have relationships with Market Participants which may have affiliates that also may have been parties to business transactions with ERCOT that are not reportable on Schedule L. Market Participants are those entities that engage in any activity that is in whole or in part the subject of the ERCOT Protocols which are used for the orderly functioning of the ERCOT market.</Explanation>
      </Form990ScheduleLPartV>
    </IRS990ScheduleL>
    <IRS990ScheduleO documentId="R000005" softwareId="11000129" softwareVersion="v1.00">
      <GeneralExplanation>
        <Identifier>F990_P01_S00_L01</Identifier>
        <ReturnReference>Form 990, Part I, Line 1</ReturnReference>
        <Explanation>Electric Reliability Council of Texas, Inc. (ERCOT) lessens the burdens of government, serves the public interest by, and fulfills its statutory obligation by: (i) ensuring open access to transmission and distribution systems; (ii) maintaining system reliability and operations; (iii) enabling retail choice; operating fair and competitive wholesale markets; (iv) maintaining the renewable energy credits registry; and (v) providing leadership and independent expertise to improve system reliability and market efficiency. As an independent system operator of reliable, open and non-discriminatory electric markets in the State of Texas, ERCOT manages the reliable flow of electric power to 23 million Texans - representing 85 percent of the state's retail customers and 75 percent of the Texas land area. ERCOT schedules power on an electric grid that connects 40,500 miles of transmission lines and more than 550 generation units. ERCOT also manages financial settlement for the $34 billion competitive wholesale bulk-power market and administers customer switching for 6.7 million premises in competitive choice areas.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>F990_P03_S00_L01</Identifier>
        <ReturnReference>Form 990, Part III, Line 1</ReturnReference>
        <Explanation>Effective during 2011: ERCOT serves the public interest by: ensuring open access to transmission and distribution systems; maintaining system reliability and operations; enabling retail choice; operating fair and competitive wholesale markets; maintaining the renewable energy credits registry; and providing leadership and independent expertise to improve system reliability and market efficiency. Effective January 1, 2012: We serve the public by ensuring a reliable grid, efficient electricity markets, open access and retail choice.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>F990_P06_S0A_L01a</Identifier>
        <ReturnReference>Form 990, Part VI, Section A, Line 1a</ReturnReference>
        <Explanation>Pursuant to Section 39.151 of the Texas Public Utility Regulatory Act, the ERCOT Board of Directors is composed of sixteen members. Fifteen of the members have voting rights; the chair of the Public Utility Commission of Texas is an ex-officio non-voting member. Six of the voting directors represent segments of participants in the ERCOT electricity market; each such "market participant director" has an elected alternate (segment alternate) who can attend meetings in the absence of the market participant director and vote on the absent market participant director's behalf in the event that such market participant director cannot attend a board meeting.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>F990_P06_S0A_L06</Identifier>
        <ReturnReference>Form 990, Part VI, Section A, Line 6</ReturnReference>
        <Explanation>As of December 31, 2011, ERCOT's membership included 302 voting and non-voting members. ERCOT members may be Corporate Members, Associate Members, or Adjunct Members. Corporate Members have the right to vote on all matters submitted to the general Membership (such as election of Directors, election of Technical Advisory Committee (TAC) Representatives, and amendments to the Articles of Incorporation and Bylaws). Corporate Members qualify in one of seven segments: Cooperative; Independent Generator; Independent Power Marketer; Independent Retail Electric Provider; Investor Owned Utility; Municipal (i.e. a municipal-owned utility or a River Authority); or Consumer (which has three subsegments - Commercial, Industrial and Residential). Associate and Adjunct Members do not have the right to vote on any matter submitted to the general Membership, and Adjunct Members do not have the right to be elected or appointed to the ERCOT Board, TAC, or any subcommittee of the Board or TAC.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>F990_P06_S0A_L07a</Identifier>
        <ReturnReference>Form 990, Part VI, Section A, Line 7a</ReturnReference>
        <Explanation>Thirteen of the fifteen voting members of the ERCOT Board of Directors are elected by the Corporate Members or a portion of such Corporate Members. With respect to each of the six Market Participant Directors, only the Corporate Members of the Membership Segment represented by the Market Participant Director are allowed to elect the Director and the Segment Alternate for that seat. There are three Consumer Directors, of which: (i) one is the Public Counsel, an ex officio voting member of the Board representing residential consumers and small commercial consumers; (ii) one is selected by the Large Commercial Consumer Corporate Members; and (iii) one is elected by the Corporate Members of the Industrial Consumer subsegment. The Membership votes by segment to elect the five unaffiliated voting Directors. The remaining voting Director is the Chief Executive Officer of ERCOT, who is an ex officio voting member of the Board.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>F990_P06_S0A_L07b</Identifier>
        <ReturnReference>Form 990, Part VI, Section A, Line 7b</ReturnReference>
        <Explanation>As a matter of state law or its governing documents, certain material matters must be submitted to the voting members of ERCOT for their approval, including amendments to the Articles of Incorporation and the Bylaws. Decisions of the ERCOT Board are generally appealable to the Public Utility Commission of Texas, an agency of the State of Texas.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>F990_P06_S0B_L11b</Identifier>
        <ReturnReference>Form 990, Part VI, Section B, Line 11b</ReturnReference>
        <Explanation>The 2011 Form 990 was prepared initially by the Finance Department of ERCOT. It was reviewed by ERCOT officers as well as internal legal counsel, and then submitted for review by ERCOT's independent auditors. The Form 990 was provided to the Board of Directors in advance of, and for its consideration and input at, a meeting on July 17, 2012. The final version of the 2011 Form 990, incorporating the comments of all of the foregoing, was then filed with the Internal Revenue Service.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>F990_P06_S0B_L12c</Identifier>
        <ReturnReference>Form 990, Part VI, Section B, Line 12c</ReturnReference>
        <Explanation>Each Director and Segment Alternate annually must execute an Ethics Agreement for Directors and Segment Alternates, and each employee annually must attend internal training sessions and execute an Employee Ethics Agreement. Pursuant to each Ethics Agreement, a signatory has an affirmative duty to disclose any actual or potential conflicts of interest of the signatory (and his or her employer, in the case of Director or Segment Alternates), and also must disclose all personal relationships with ERCOT vendors, including business or direct or indirect ownership interests. Any conflict of interest issue involving a Director or Segment Alternate is referred to the ERCOT General Counsel who, in consultation with the Board Chair and outside legal counsel, if and when necessary, makes a legal determination as to whether a conflict exists and, if so, a recommendation as to how it may be resolved. Any conflict and its resolution are reported to both the Human Resource &amp; Governance (HR&amp;G) Committee of the Board and the full Board of Directors. Any objection to the recommendation is resolved by the HR&amp;G Committee or the full Board. Any ERCOT employee conflicts are evaluated by the ERCOT legal staff, and the legal staff makes a recommendation to resolve the conflict of interest. If the ERCOT legal staff recommends a resolution that is objectionable to the manager/director/officer of the conflicted employee, the legal decision is referred to the Chief Executive Officer and ultimately to the Board's HR&amp;G Committee.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>F990_P06_S0B_L15</Identifier>
        <ReturnReference>Form 990, Part VI, Section B, Line 15</ReturnReference>
        <Explanation>1) In determining compensation for the Chief Executive Officer, ERCOT follows a procedure which ensures that (i) compensation is approved in advance by the HR&amp;G Committee of the Board of Directors and the Board itself, (ii) the Board and the HR&amp;G Committee obtains and relies upon appropriate data for comparability, (iii) the Board and the HR&amp;G Committee each adequately documents the basis for its respective determination, and (iv) the Public Utility Commission of Texas reviews and approves of any compensation to be paid to the Chief Executive Officer. In practice, the HR&amp;G Committee of the Board of Directors reviews proposed changes to Chief Executive Officer compensation and submits recommendations to the Board for its approval by all uninterested members of the Board of Directors (that is, all Board members except the Chief Executive Officer who is required to abstain from such vote). In its review, the HR&amp;G Committee can request information from independent compensation consultants, and they receive information annually in regards to the compensation levels of similar companies from Forms 990 and other sources. Additionally, compensation surveys/studies are performed, as needed, to provide insight into the elements of compensation. The compensation-related information and HR&amp;G Committee recommendations are submitted to the Board of Directors for its consideration and approval. A review of the Chief Executive Officer's compensation is performed annually except in those limited instances in which the compensation has been determined pursuant to the provisions of an employment agreement for a term exceeding a year between ERCOT and the Chief Executive Officer, which has been approved by the Board of Directors, and all decisions regarding the Chief Executive Officer's compensation are documented and maintained. Furthermore, the Public Utilities Commission of Texas Substantive Rules related to ERCOT Governance require that the Public Utilitiy Commission of Texas review and approve all compensation to be paid to the Chief Executive Officer. 2) In determining compensation for officers other than the Chief Executive Officer, ERCOT follows a procedure which ensures that (i) compensation is fully disclosed in advance to the HR&amp;G Committee of the Board of Directors, (ii) the HR&amp;G Committee obtains and relies upon appropriate data for comparability, and (iii) the HR&amp;G Committee adequately documents the basis for its determination. The Chief Executive Officer reports proposed officer pay amounts to the HR&amp;G Committee for review and comment before any merit increase is finalized. Key employee compensation is reviewed and determined by their appropriate officer. For review of officer and key employee compensation, ERCOT uses merit ratings and data obtained relating to comparable compensation of similarly qualified persons in comparable positions at comparable organizations, including compensation surveys and Forms 990. The HR&amp;G Committee can request information from independent compensation consultants. Officer and key employee compensation is reviewed annually, and all decisions regarding officer and key employee compensation are documented and maintained.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>F990_P06_S0C_L19</Identifier>
        <ReturnReference>Form 990, Part VI, Section C, Line 19</ReturnReference>
        <Explanation>ERCOT's governing documents, conflict of interest policy, and audited financial statements are available to the public through the ERCOT website (www.ERCOT.com).</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>F990_P08_S00_L01e</Identifier>
        <ReturnReference>Form 990, Part VIII, Line 1e</ReturnReference>
        <Explanation>Included on Line 1e are payments from governmental units, the primary purpose of which are to enable ERCOT to provide a service to the direct benefit of the public rather than to serve the direct and immediate needs of the governmental units. Also included on Line 1e are grant payments received from the U.S. Department of Energy (DOE). In 2010 under the American Recovery and Reinvestment Act, ERCOT was awarded two grants totaling $3.5 million, to be paid over a three year period. In 2011, ERCOT recorded $596,488 of revenue from the DOE. Of this, $61,520 was a receivable for funds expended in 2011 but not yet reimbursed. These governmental payments were received in connection with the exercise of ERCOT's exempt function. As these payments are from governmental units, they are not reported on Part I of Schedule B, Schedule of Contributors.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>F990_P11_S00_L05</Identifier>
        <ReturnReference>Form 990, Part XI, Line 5</ReturnReference>
        <Explanation>Other changes in net assets of $6,571,505 represents a derivative valuation change of $6,595,962 under FASB ASC 815 Derivatives and Hedging Topic and deferred pension costs of ($24,457).</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>F990_P12_S00_L03b</Identifier>
        <ReturnReference>Form 990, Part XII, Line 3b</ReturnReference>
        <Explanation>In 2010, under the American Recovery and Reinvestment Act, ERCOT was awarded two grants totaling $3.5 million, to be paid over a three year period. In 2011, ERCOT expended more than $500,000 under the grants. Therefore, ERCOT was required to undergo an audit as set forth in the Single Audit Act and OMB Circular A-133. Per the OMB Circular A-133, the audit must be completed within nine months after the end of the audit period. For the 2011 expenditures, an audit was performed and the report was filed by July 31, 2012.</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
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</Return>