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Wholesale Market Subcommittee (WMS) Jeremy Carpenter 2016 WMS Chair

Wholesale Market Subcommittee (WMS) Jeremy Carpenter 2016 WMS Chair Technical Advisory Committee (TAC) Meeting Report ERCOT Public. Meeting Schedule. Last WMS meeting July 6 th , 2016 Next WMS meeting August 3 rd , 2016. WMS Voting Items. NPRR 747 – Revision of Voltage Requirements

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Wholesale Market Subcommittee (WMS) Jeremy Carpenter 2016 WMS Chair

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  1. Wholesale Market Subcommittee (WMS) Jeremy Carpenter 2016 WMS Chair Technical Advisory Committee (TAC) Meeting Report ERCOT Public July 28th, 2016 TAC Meeting

  2. Meeting Schedule • Last WMS meeting • July 6th, 2016 • Next WMS meeting • August 3rd, 2016 July 28th, 2016 TAC Meeting

  3. WMS Voting Items NPRR 747 – Revision of Voltage Requirements • Endorsed with 4/21/16 ERCOT Comments NPRR 696 – Price Correction Process Following a SCED Failure • Endorsed with 10/19/15 Reliant Comments (Roll Call) NPRR 773 – Broadening Scope of Acceptable Letter of Credit Issuers • Endorsed with 6/22/16 CWG Comments NPRR 782 – Settlement of Infeasible Ancillary Services Due to Transmission Constraints • Endorsed as Submitted July 28th, 2016 TAC Meeting

  4. RMR – Workshop Issue List • NSO Notification Timeline (in 25.502 Substantive Rule?) • Is 90 day notice enough? • Obligation or Incentive For Early Notification • Transmission Planning Assumptions – should ERCOT forecast retirements? • Develop potential alternatives to potential retirements • Get rid of transmission exit strategy for RMRs? • RMR Study case assumptions and Risk Analysis (less conservative for RMR than for transmission planning studies?); RMR for transmission constraint criteria • RMR for capacity criteria? • Remove Output Schedule Option? • RMR RUC Criteria transparency • SCED dispatch for transmission constraint issues • Mitigation • Capital Contribution Claw back • Capital Contribution definition • Can a PUN be an MRA? • MRA process needs clarification • Are there perverse incentives in the MRA language today? • Contract length • “significant investment” language • Pre-RMR execution MRA process • Contract language clean up • Does MRA have to solve the reliability issue or just provide equivalent mitigation? July 28th, 2016 TAC Meeting

  5. RMR – WMS Prioritized List and Assignments July 28th, 2016 TAC Meeting

  6. RMR – Next Steps Continue to work on issues in WMS, Working Groups, and other Subcommittees (ROS) • Afternoons of WMS meetings as schedule allows Seeking guidance on any other specific action items July 28th, 2016 TAC Meeting

  7. WMS Other Business Joint Market Continuity Workshop (WMS, COPS, RMS) • Assignments made to various working groups • Next meeting pushed to at least September or October NPRR 777 – ERCOT-directed Dispatch of Price-Responsive Distributed Generation • Plan to dedicate 1 hour at each WMS meeting over the next 4 months July 28th, 2016 TAC Meeting

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