ERCOT TAC Special Meeting — Batch Zero PGRR145 & NPRR1325 Review — May 13, 2026

Recording of the ERCOT Technical Advisory Committee (TAC) Special Meeting held May 13, 2026. The session ran approximately 5 hours and 7 minutes and focused on review of the PRS Report, Batch Zero PGRR145, NPRR1325, and related revision requests. Key Topics Covered PRS Report presentation covering NPRRs 1316, 1325, 1327, 1330, 1307, 1264, and 1315, including vote outcomes and abstentions Batch Zero (PGRR145) eligibility criteria, attestation consequences, and allocation methodology updates per PUC guidance ERCOT's position against moving the March 4 eligibility date to July 10 and against expanding eligibility via PCLR/WL PUN election IMM opposition to NPRR 1315 over concerns about open-ended out-of-market procurement authority and load shed thresholds Vistra-proposed language changes to NPRR 1315 distinguishing system-wide vs. local procurement Implementation assessment for Batch Zero, including 19 additional FTEs needed across grid planning and study groups Discussion of investment-grade ratings list and potential addition of Fitch ratings agency Stakeholder concerns regarding transparency and vetting of 5-year load growth projections Chapters 00:01:39 Diana Coleman (CPS Energy) 00:10:32 Jeff (Last Name Not Stated) (ERCOT) 00:23:21 Bob Hilton (Unidentified (TAC Seated Rep)) 00:24:33 Shane Thomas (Shell) 00:40:36 Brian Sams (Unidentified (TAC Seated Rep)) 00:52:17 Jeff Billow (IMM (Independent Market Monitor)) 01:14:15 Matt Marin (ERCOT) 01:39:17 Eric Goff (Texas New Buyers Alliance (TEBUS)) 01:47:55 Blake Holt (LCRA) 01:54:45 Ned Monskask (Vistra) 02:15:38 Shannon (Last Name Not Stated) (AEP (Oncor context)) 02:45:27 Clayton (Last Name Not Stated) (Cholla (Venus/Southern DFW site)) 04:30:27 AG Springer (ERCOT) This recording is provided for public transparency and informational purposes.