Published: September 23, 2025

1 – Antitrust Admonition – Alex Miller

2 – Agenda Review – Alex Miller

3 – SCR819 – NPRR1111 – NTE Implementation Monitoring and Impacts – Freddie Garcia / Alex Lee

• ERCOT’s Alex Lee presented an intermediate performance review of SCR819 (tied to NPRR1111).
• SCR819 was reactivated after the 2021 winter storm Uri and implemented in June 2024.
• Goal: improve control over Generic Transmission Constraints (GTCs) by curtailing all resources behind a GTC to avoid exceeding base points.
• Results showed improved management of GTC flow, reducing spikes and maintaining flow closer to limits across Panhandle, West Texas, North Edinburgh–Lobo, and Zapata–Starr interfaces.
• ERCOT will continue analysis/testing and provide more guidance for control room operators.

Materials: 2024_sep_cmwg_nte_performance_public.pdf

4 – CRR LTAS Update / Transaction Limits – Samantha Findley

• LTAS data on submitted transactions and bidding behaviors showed rising volumes and performance risks in CRR LTAS auctions.
• Proposed paths to address issues:
  1. Administrative Guardrails: limit transactions per TOU; lower bids per account holder.
  2. Market Incentives: raise minimum option bid price; consider an unawarded option bid fee.
  3. Market Redesign: discontinue multi-month bids in LTAs; adjust network model percentages.
• Stakeholders discussed feasibility, impacts, and unintended consequences; requested studies to separate effects of options vs obligations.
• ERCOT committed to study multi-month bid removal and to file an NPRR enabling administrative limits and lower bid caps.

Materials: CRR-CMWG_09232024.pdf

5 – NPRR1214 RDPA Fix to Provide Locational Price Signals, Reduce Uplift and Risk – Ryan King / Shams Siddiqi

5.1 – ERCOT comments

• ERCOT filed comments on Aug 9, incorporating feedback from prior CMWG discussions and bilateral talks.
• Concerns noted on treatment of energy storage resources, impacts of NPRR1188 nodal settlement for CLRs, and modeling of DC Tie curtailments.
• Conclusion: current NPRR needs additional refinement; implementation only feasible after RTC.

5.2 – Sponsor update – Shams Siddiqi

• Presentation on indifference payment concepts to correct incentive incompatibility with dispatch under RDPA/RTC.
• Covered price signal inefficiencies at resource nodes and examples (e.g., Turkey Track Wind, Wolf Hollow).
• Addressed ERCOT feedback on storage, DC Tie curtailments, and implementation risks pre/post RTC+B.

Materials:

• ERCOT: (comments summarized above)
• Sponsor deck: nprr1214-indifference-payment-under-rtc-092324-v2.pdf

6 – RENA Update – Questions Only – ERCOT

• Monthly RENA updates (May & June) were posted; no issues or questions raised.

Materials: May · June

7 – Other Business – Alex Miller

• Proactive approach to 2025 scheduling to avoid conflicts; WMS mid-month Wednesdays; follow-up meetings the Thursday of the following week.
• WebEx-only for now; in-person meetings possible with sufficient interest.
• Avoided major holidays/events (e.g., spring break).

Related meeting: 09/23/24 – ERCOT – CMWG Meeting – Webex Only

8 – Adjourn