NOTICE DATE: August 20, 2024

NOTICE TYPE: M-A082024-01 Operations

SHORT DESCRIPTION: Potential Price Corrections - Incorrect Resource Data Impacting the Real-Time Market

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED: August 9, 2024 - August 10, 2024

LONG DESCRIPTION: On August 10, 2024, ERCOT became aware of a Resource that was incorrectly identified as not being qualified for Security-Constrained Economic Dispatch (SCED).  After an initial investigation, it was found that on August 9, 2024, ERCOT had erroneously updated the Resource's registration effective date, effectively removing it from SCED qualification.  ERCOT fixed the Resource's effective date at approximately 1:00 PM on August 10, 2024, allowing it to be considered for SCED dispatch.

Accordingly, prices in the Real-Time Market (RTM) for Operating Days (ODs) August 9, 2024 and August 10, 2024 may have been impacted.  The Day-Ahead Market (DAM) was not affected.

If ERCOT determines that RTM prices qualify for a correction and seeks review of such prices by the ERCOT Board of Directors (Board), ERCOT must notify Market Participants no later than 30 days following the OD; see ERCOT Protocol Section 6.3(7)(a).

While ERCOT continues to investigate the impact on RTM prices, this Market Notice is being issued to preserve the eligibility of the Board to review prices for qualifying ODs.  ERCOT will provide Market Participants with a follow-up Market Notice with more information concerning pricing impacts and the specific ODs for which ERCOT will be seeking Board review, if any.

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 [log in to unmask].

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dg