Ercot Technical Advisory Committee (Tac) Meeting s1

ERCOT TECHNICAL ADVISORY COMMITTEE (TAC) MEETING ERCOT Met Center / 7620 Metro Center Drive, Austin, Texas 78744 December 1, 2016 / 9:30 a.m. – 12:00 p.m. http://ercot.webex.com Meeting Number: 628 110 549 Meeting Password: TAC Audio Dial-In: 1.877.668.4493

1. Antitrust Admonition A. Brandt 9:30 a.m. 2. Approval of TAC Meeting Minutes (Vote) A. Brandt 9:35 a.m.  October 27, 2016 3. Protocol Revision Subcommittee Report A. Frazier 9:40 a.m.  Confirmation of 2016 PRS Chair/Vice Chair (Vote)  Revision Requests for Consideration (Vote):  NPRR792, Changing Special Protection System (SPS) to Remedial Action Scheme (RAS)  NPRR803, Remove Grey-boxed Language from NPRR439, Updating a Counter-Party’s Available Credit Limit for Current Day DAM  Other Binding Document List 4. Revision Request Previously Tabled by TAC (Possible Vote) A. Brandt 10:00 a.m.  NPRR773, Broadening Scope of Acceptable Letter of Credit Issuers  PGRR051, Alignment with NPRR792, Changing Special Protection System (SPS) to Remedial Action Scheme (RAS)  NOGRR164, Alignment with NPRR792, Removing Special Protection System (SPS) and adding Remedial Action Scheme (RAS) – URGENT  Appeal of NOGRR149, Revision to Definition of Transmission G. Nunan/T. Operator Anson

5. Reliability and Operations Subcommittee Report A. Bern 10:20 a.m.  NOGRR162, Process for Resolving Real-Time Data Discrepancies (Vote)  PGRR042, Regional Transmission Plan Model Reserve Requirement and Load-Generation Imbalance Methodology (Vote)  6. Wholesale Market Subcommittee Report J. Carpenter 10:40 a.m.  SMOGRR018, EPS Metering for Three-Wire Wye Configurations (Vote)  SMOGRR019, Clarifications and Updates to Paralleling Current Transformers, Instrument Transfer Name Plate Photos and Loss Potential Event Logging Requirements (Vote)  2016 CRR Activity Calendar (Vote)  Market Continuity Updates to TAC 7. Commercial Operations Subcommittee Report M. Trenary 11:00 a.m.  Confirmation of 2016 COPS Vice Chair (Vote)  COPMGRR044, Alignment with NPRR794, Relocation of

1 Unregistered DG Reporting Requirements (Vote)

8. Retail Market Subcommittee Report K. Scott 11:20 a.m.  Market Continuity Updates to TAC

9. ERCOT Operations, Planning, and IT Report 11:40 a.m.  DAM Make-Whole Calculation Issue M. Ruane

10. Other Business A. Brandt 11:50 a.m.

Adjourn 12:00 p.m.

Future TAC Meetings  Possible TAC Email Votes  January 28, 2017  February 23, 2017

Open Action Items from Previous Meeting(s) Responsible Party

 2/27/14 – Review Operating Procedure that ERCOT uses to determine when ERCOT they need RUC (specifically RUC for bad weather)  4/24/14 – Evaluate concerns with bringing RUC units earlier than required ROS/WMS because of start-up failures  5/29/14 – Review post NPRR589 SASM Performance ERCOT  9/25/14 – Voltage Reduction – assess cost issues and applicability to loads as ROS/WMS well as market impacts  12/18/14 – Consider alternative implementation options for automation of WMS NPRR664, Fuel Index Price for Resource Definition and Real-Time Make- Whole Payments for Exceptional Fuel Cost Events. (Report back to TAC in March 2015)  1/28/16 – Annual RUC Reporting – report on market impact component of ERCOT RUC.  Appeal of NOGRR149, Revision to Definition of Transmission Operator – Tabled TAC until December 1, 2016 TAC meeting.