NOTICE DATE: March 13, 2025

NOTICE TYPE: M-B022625-02 Operations

SHORT DESCRIPTION: RTC+B Accountable Executive Response Requested for Upcoming RTC+B Market Trials

INTENDED AUDIENCE: All Qualified Scheduling Entities (QSEs) with Resources

DAYS AFFECTED: March 31, 2025

LONG DESCRIPTION: Each Real-Time Co-optimization Plus Batteries (RTC+B) Accountable Executive (AE) is being asked to respond regarding awareness of the upcoming RTC+B Market trials.

In August 2024, your company attested to awareness of the necessary preparations for implementation of the RTC+B initiative and identified an Accountable Executive for RTC+B readiness (RTC+B AE).  With the required RTC+B Market trials beginning in a few weeks, ERCOT is requesting additional confirmation from the RTC+B AE of awareness of upcoming activities and key milestones your company will be involved in.

Please confirm that your company is aware of the following:

• ERCOT has made the RTC+B initial testing environment available to QSEs to begin optional connectivity testing as of March 7, 2025 (Market Notice).
• ERCOT has posted the first wave of Market Trials Handbooks on its public website (https://www.ercot.com/committees/tac/rtcbtf).
• In accordance with the Handbooks:
• ERCOT has requested that QSEs submit new telemetry point requests prior to the May 5, 2025 Market trials so that QSEs' Resources are ready and available for testing;
• ERCOT will begin required Market trials with QSEs on Monday, May 5, 2025;
• ERCOT will start conducting weekly RTC+B Market readiness calls with QSEs every Monday morning at 10:00 am beginning May 5, 2025;
• ERCOT will start publishing scorecards for QSEs after May 16, 2025; and
• These weekly activities will continue until RTC+B go-live, which remains scheduled for Operating Day Friday, December 5, 2025.

By responding in the affirmative via email to RTCB@ercot.com, your company acknowledges awareness of these RTC+B milestones. The status of these email affirmation responses will be shared during the April meeting of the ERCOT Board of Directors.

ACTION REQUIRED: Monday, March 31, 2025 is the deadline for each RTC+B AE to email affirmation to RTCB@ercot.com, including the applicable QSE name and DUNs number for your company.  A response from the primary QSEs will be applied to all applicable sub-QSEs.  For QSEs who have not designated an RTC+B Accountable Executive (RTC+B AE), please so designate via your affirmation to this Market Notice.  The attached Market Notice provides more information regarding the RTC+B AE (M-A072524-01). 

CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at ClientServices@ercot.com.

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dg