TAC highlighted three high-profile NPRRs requiring PRS action by March 12
NPRR1268: AS demand curve policy changes
NPRR1269: Resolution on AS proxy floor, RUC AS demand curves, and scaling factors for ramp sharing
NPRR1270: Administrative changes to load resources, removes group assignments, adds preprocessing checks for SCED, and eliminates automatic AS qualification for resources
Encouragement to join the RTCBTF meeting at 2PM for discussions on the NPRRs
Dave Maggio presented the current status of the ADER pilot previously at TAC, mentioning a shift from PUC to ERCOT stakeholder process.
The ADR pilot has evolved in phases: initial phase for non-spin awards, phase two for testing and validation, and phase three focusing on expanding ADER participation models.
Currently, three ADERs fully participate in the market; eight more are in the registration process, with about 25 MW capacity for energy, 11 MW for non-spinning, and 8.8 MW for ECRS.
Phase three policy focuses on expanding participation models, considering NCLR as an option besides CLR for resources without smooth ramp capability.
Discussion arose on third party aggregators participating with residential customers, causing contention.
Compromise proposed: aggregators for premises 100 kW or greater; smaller resources must use retail electric providers or municipal/co-op.
Pilot limits can be increased by ERCOT without governing updates.
Finalization of these discussions is needed to reflect in the phase three governing document due for board approval by June.
Further consensus on third-party aggregations suggested, with possible discussion at DSWG ahead of the April 2nd meeting.
Eric Goff emphasized eliminating unnecessary barriers to residential consumer participation.
Vistra raised concerns on third-party aggregations and the impact on LSE's financial hedging due to third-party actions.
Discussion on framework for accountability and penalties in third-party aggregations and their implications for LSE and retailers.
▶️5.2 - New Hill County and nearby 345-kV (SAMSW) Generic Transmission Constraint (GTC)
ERCOT implemented a new Generic Transmission Constraint (GTC) in Hill County.
The new GTC is not related to SSR; it addresses a weak grid issue identified in stability assessments.
System strength is weak in the local area with a high concentration of renewable resources, causing dynamic stability issues.
The GTC is required only under certain conditions, specifically when there are double circuit priorities.
The instability issues are related to oscillatory response, undamped oscillations, or slow motion recovery.
The GTC methodology is posted on the ERCOT MIS secure website for reference.
There was confusion due to market notices referencing SSR; clarified that the GTC addresses a different instability.
Questions were raised about the nature of stability issues and clarity was provided that it's a dynamic stability concern under multiple contingencies.
The new GTC was implemented on the day of the meeting.
NPRR1229 has undergone significant revisions to include more criteria and a reporting threshold similar to NPRR1190.
The NPRR aims to provide cost recovery payments if a unit trips following ERCOT manual action, with three payment categories: financial losses, breakage cost capped at $500,000 per event, and a start-up payment.
Concerns were raised about allowing financial recovery in cases where a resource trips during manual actions initiated by ERCOT for reliability, despite such occurrences being rare.
Blake Holt indicated that the operation scenario was rare and it was reasonable for ERCOT to require such operations for reliability, with cost recovery provided if necessary.
Eric Goff expressed concerns over the potential for out-of-market payments to generators and preferred exploring alternatives like the SCED system.
Attendees discussed potentially lowering the reporting threshold from $3.5 million to $1.5 million for further review, considering the novelty of the mechanism.
ERCOT’s stance is neutral currently, with no firm position on NPRR1229, recognizing the collaborative input in creating feasible language.
The importance of having mechanisms for cost recovery when manual actions result in harm was highlighted with emphasis on transparency and agreement on financial recovery.
No strong objections were raised to a lower threshold; ERCOT indicated a neutrality that wouldn’t react to this change. The motion to amend NPRR1229 with a lower threshold passed.
Outcome: The motion carried with 80% in favor and 20% opposed.
▶️10.2 - NPRR1264, Creation of a New Energy Attribute Certificate Program (WMWG) (Possible Vote)
Motion to endorse NPRR1264 as amended by the 2/11/25 Constellation comments passed with one abstention.
Eric Goff and Austin Rosel discussed implementation options for NPRR1264, whether by ERCOT or a third party vendor, asking for feedback.
The sponsors requested a WMS vote to move to the impact analysis phase.
Andy Nguyen and Eric Goff emphasized the importance of considering impact analysis due to its potential to uncover implementation choices.
Comments from Constellation and others were reviewed, focusing on API functionality.
The meeting had discussions on desktop edits and transparency, with various stakeholders voicing support and concerns.
Concerns were raised about the neutrality of the original NPRR language regarding technology types in the EAC attribute table.
A motion to approve the NPRR1264 for moving to the impact analysis phase, considering comments by Constellation, was passed.
A clear intention to maintain flexibility in how market participants decide to adopt hourly tracking for the energy attribute certificate program.
LCRA requested an educational session to understand the situation on February 19 that led to record setting LMPs in Central Texas.
They want to understand the constraint activation procedure, focusing on constraints that were compounding with a post contingency overload greater than 98%.
They seek clarity on 'series elements' in the current operating procedure.
Gordon Drake from ERCOT agreed to address this at the CMWG and prepare information for a future meeting.
Shams Siddiqi requested an update regarding behind the meter resources providing ancillary services, which was an issue discussed at the last WMS.
Gordon Drake from ERCOT mentioned there is no update at the current meeting but will follow up with internal resources for information to be presented in a future meeting.
