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December 1, 2016 TAC Update to COPS

This update provides the latest information from TAC meetings in December 2016, including approvals, revisions, and upcoming activities in various areas of ERCOT operations.

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December 1, 2016 TAC Update to COPS

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  1. December 1, 2016TACUpdate to COPS Michelle Trenary December 14, 2016

  2. PRS Update • Confirmation of PRS Chair and Vice-Chair Approved • Chair: Amanda Frazier, Vistra Energy • Vice-Chair: Martha Henson, Oncor • NPRR792, Changing Special Protection System (SPS) to Remedial Action Scheme (RAS) Approved • NPRR803, Remove Grey-boxed Language from NPRR439, Updating a Counter-Party’s Available Credit Limit for Current Day DAM Approved • Other Binding Document ListApproved • Removal of the PCRR Allocation Eligibility Form from the OBDs list 2

  3. Revision Requests Previously Tabled by TAC • NPRR773, Broadening Scope of Acceptable Letter of Credit (LOC) Issuers Approved • PGRR051, Alignment with NPRR792, Changing Special Protection System (SPS) to Remedial Action Scheme (RAS) Approved • NOGRR164, Alignment with NPRR792, Removing Special Protection System (SPS) and adding Remedial Action Scheme (RAS), URGENT Remains Tabled • Appeal of NOGRR149, Revision of Definition of Transmission OperatorTabled until the January TAC meeting 3

  4. ROS Update • NOGRR162, Process for Resolving Real-Time Data Discrepancies Approved • PGRR042, Regional Transmission Plan Model Reserve Requirement and Load-Generation Imbalance Methodology Approved • Concerns raised regarding proposed use of the “bounded higher of” methodology; the disparate values used in the Load Forecast for each Weather Zone; and the need for two additional FTEs • Areas of most concern are not planned until January 2018, allowing time for an evaluation period • ERCOT will provide additional information regarding the need for two additional FTEs; ERCOT will begin next year’s Regional Transmission Plan in January 2017 and PGRR042 will have a direct impact on the methodology and assumptions used to develop the plan 4

  5. WMS Update • SMOGRR018, EPS Metering for Three-Wire Wye Configurations Approved • SMOGRR019, Clarification and Updates to Paralleling Current Transformers, Instrument Transfer Name Plate Photos and Loss Potential Event Logging Requirements Approved • CRR Activity Calendar Approved • Covers CRR activities through early 2019 • Includes a format change and adjusting dates for the Long-Term Auction Sequences (LTAS) 5

  6. COPS Update • Re-confirmation of COPS Vice-Chair Approved • Vice-Chair: John Schatz, TXU Energy • COPMGRR044, Alignment with NPRR794, Relocation of Unregistered DG Reporting Requirements Tabled • TAC Assignment to COPS • Review the 2% Rule 6

  7. ERCOT Update • DAM Make-Whole Calculation Issues • In November ERCOT staff detected a material increase in DAM Make-Whole payments subsequent to the implementation of NPRR617, Energy Offer Flexibility on June 22, 2016 • The increase resulted from a mismatch between Startup and Minimum Energy Costs used by the DAM clearing engine and those used for DAM MWPs in Settlements • Mark Ruane will present more information on the DAM Make-Whole Calculation Issue and its Settlement results to COPS (57 ODs impacted; ~$1.8M total, none met 2% resettlement threshold) • TAC assigned COPS and WMS with reviewing the 2% Resettlement Protocol language 7

  8. ERCOT Update • Market Continuity Updates to TAC • Mark Ruane thanked the Subcommittees for their work on the broad based topic of Market Continuity • ERCOT staff plans to take the input provided and develop an NPRR or Market Guide to encapsulate the ERCOT Market Continuity Plan • ERCOT staff will return in March with the high level principles for stakeholder review 8

  9. Questions? 14

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