NOTICE DATE: December 15, 2023

NOTICE TYPE: M-B121523-01 Operations

SHORT DESCRIPTION: Issue identified with the following Disclosure reports posted to the ERCOT Public Website 12/02/2023 for OD 11/30/2023

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED: Operating Day (OD) November 30, 2023

LONG DESCRIPTION: ERCOT has discovered missing or incorrect data with some files in the NP3-908-ER 2-Day DAM and SCED Energy Curves Reports and NP3-910-ER 2-Day Real Time Gen and Load Data Reports for OD 11/30/2023. ERCOT has posted the corrected reports to the MIS. The corrected reports are named:

• 2_Day_DAM_and_SCED_Energy_Curves_CORRECTION
• 2_Day_Real_Time_Generation_and_Load_Data_CORRECTION

ADDITIONAL INFORMATION: The affected reports have been removed from the ERCOT Website and any parties that previously downloaded the inaccurate reports should delete the original files and replace with the CORRECTION files posted 12/15/2023.

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