Meeting · TAC

TAC Meeting

Concluded date 2025-08-27 time 09:30 committee TAC ercot.com

LocationERCOT Austin 8000 Metropolis (Building E), Suite 100 Austin, TX 78744 Boardroom B

VirtualWebEx / Teams

Dial-in877-668-4493

Revision Requests On The Agenda

NOGRR264NOGRR272NOGRR278NPRR1235NPRR1265NPRR1266NPRR1279NPRR1283NPRR1290NPRR1291PGRR121PGRR129SCR832

Agenda 48 items

1. Antitrust Admonition — Caitlin Smith · 9:30 a.m.
2. Approval of TAC Meeting Minutes Vote — Caitlin Smith · 9:35 a.m.
July 30, 2025
- Draft TAC Minutes 20250730 · Meeting Minutes
3. Meeting Updates — Caitlin Smith · 9:40 a.m.
PUCT Open Meeting Updates
4. Biennial TAC/TAC Subcommittee Structural and Procedural Review Update — Caitlin Smith · 9:45 a.m.
Changes/Consolidation of Working Groups
Late Comments and Materials — Ann Boren
5.
Prioritization Workshop Update — Amanda Frazier/ Keith Collins · 10:05 a.m.
- 5. Update on Prioritization Workshop · Project Documents
6.
Review of Revision Request Summary/ERCOT Market Impact Statement/Opinions — Ann Boren/ IMM · 10:25 a.m.
- 6. Revision Request Summary_rev2
7. PRS Report Vote — Diana Coleman · 10:30 a.m.
NPRR1265, Unregistered Distributed Generator
- 7. PRS Report
NPRR1266, Opt-Out Status Held by a Transmission-Voltage Customer Cannot be Transferred
- 7. PRS Report
NPRR1279, Reinstate Enhancements to the Exceptional Fuel Cost Process
- 7. PRS Report
NPRR1283, Modification of SSR Mitigation Timeline
- 7. PRS Report
NPRR1290, Gap Resolutions and Clarifications for the Implementation of RTC+B
- 7. PRS Report
NPRR1291, Modify Annual Demand Response Report Posting Date and Include Language to Address PUCT SUBST. R. 25.186
- 7. PRS Report
SCR832, Discontinue Report that makes COPs available to TSPs
- 7. PRS Report
8. Revision Requests Tabled at TAC Vote — Caitlin Smith · 10:50 a.m.
NOGRR264, Related to NPRR1235, Dispatchable Reliability Reserve Service as a Stand-Alone Ancillary Service
- 8. RRs Tabled at TAC
9.
RMS Report — Debbie McKeever · 10:55 a.m.
- 9. RMS Report
10. ROS Report Vote — Katie Rich · 11:15 a.m.
NOGRR272, Advanced Grid Support Requirements for Inverter-Based ESRs – URGENT
- 2025 TAC NOGRR272-PGRR121 Ballot 20250827 · Revision Request Ballot
- 10. ROS Report
NOGRR278, Related to NPRR1290, Gap Resolutions and Clarifications for the Implementation of RTC+B
- 10. ROS Report
PGRR121, Related to NOGRR272, Advanced Grid Support Requirements for Inverter-Based ESRs – URGENT
- 2025 TAC NOGRR272-PGRR121 Ballot 20250827 · Revision Request Ballot
- 10. ROS Report
PGRR129, Establish Grid Reliability and Resiliency Assessment (GRRA) Posting Requirements
- 10. ROS Report
11.
WMS Report — Jim Lee · 11:35 a.m.
- 11. WMS Report
12. Credit Finance Sub Group (CFSG) Report Vote — Loretto Martin · 11:55 a.m.
Approval of CFSG Membership
- 12. CFSG Report
13. Large Load Working Group (LLWG) Report — Bob Wittmeyer · 12:15 p.m.
Large Load Interconnection Status Update — Julie Snitman
- 13. LLWG Report
14.
RTC+B Task Force Report — Matt Mereness · 12:35 p.m.
- 14. RTCBTF Report
15. Proposed Changes to Ancillary Service Methodology for 2026 Vote · 12:55 p.m.
ERCOT Presentation — Luis Hinojosa
- 2025 TAC 2026 Ancillary Service Methodology Ballot 20250827 · Revision Request Ballot
- 15. AS Methodology
IMM Presentation — Jeff McDonald
- 2025 TAC 2026 Ancillary Service Methodology Ballot 20250827 · Revision Request Ballot
- 15. AS Methodology
16. ERCOT Reports · 1:35 p.m.
RPG Project - BTU - Texas A&M University System RELLIS Campus Reliability Project Vote — Prabhu Gnanam
- 2025 TAC BTU-A M RPG Project Ballot 20250827 · Revision Request Ballot
- 16. ERCOT Reports
RPG Project - CNP Baytown Area Load Addition Project (Waive Notice - Possible Vote) — Prabhu Gnanam
Grid Research, Innovation and Transformation (GRIT) Update — Prashant Kansal/ Venkata Tirupati
- 16. ERCOT Reports
Day-Ahead Market Price Correction - Incorrect Generic Transmission Constraint Limit used in the Day-Ahead Market — David Zhou
- 16. ERCOT Reports
17. Other Business · 2:10 p.m.
September Board/Stakeholder Engagement — Rebecca Zerwas
- 17. Other Business
Annual Meeting of ERCOT Members - TAC Representative — Caitlin Smith
- 17. Other Business
PUCT Staff update on Ancillary Service cost allocation study — Julie Gauldin
- 17. Other Business
Action Items List Review — Martha Henson
- 17. Other Business
TAC Procedures — Ann Boren
- 17. Other Business
18.
Combo Ballot Vote — Caitlin Smith · 2:40 p.m.
- 2025 TAC Combined Ballot 20250827 · Revision Request Ballot
- 2025 TAC Waive Notice for CNP RPG Project Ballot 20250827 · Revision Request Ballot
- 2025 TAC Endorse CNP RPG Project Ballot 20250827 · Revision Request Ballot
Adjourn · 2:45 p.m.

Ballots

Body	RRs	Result	Yes	No	Abstain
TAC		Motion Passes	19	7	3	xls
TAC		Motion Passes	28	0	1	xls
TAC	NOGRR278 NPRR1265 NPRR1266 NPRR1279 NPRR1283 NPRR1290 NPRR1291 PGRR129 SCR832	Motion Passes	29	0	0	xls
TAC		Motion Passes	26	3	1	xls
TAC	NOGRR272 PGRR121	Motion Passes	27	0	3	xls
TAC		Motion Passes	29	0	0	xls

Documents 3

Name	Doc Type	Type	Posted
APPROVED Minutes TAC 20250827	Meeting Minutes	docx	Oct 24 '25
agenda_tac_082725_FINAL_v2	Meeting Agenda	docx	Aug 21 '25
4. Biennial Review Update		zip	Aug 20 '25

Name

Doc Type

Type

Posted

APPROVED Minutes TAC 20250827

Meeting Minutes

docx

Oct 24 '25

agenda_tac_082725_FINAL_v2

Meeting Agenda

docx

Aug 21 '25

4. Biennial Review Update

zip

Aug 20 '25