NOTICE DATE: March 12, 2026

NOTICE TYPE: M-B030626-02 Reports

SHORT DESCRIPTION: 60-Day SCED Disclosure Report: Null Basepoint for CLRs within the 60-Day Load Resource Data in SCED output files - Supplemental files available 03/12/2026

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED: Operating Day (OD) December 5, 2025 - January 5, 2026

LONG DESCRIPTION: ERCOT has posted the supplemental files for the issues previously communicated in M-B030626-01, regarding the NP3-965-ER 60-Day Security-Constrained Economic Dispatch (SCED) Disclosure Report (Rpt. ID 13052), to the ERCOT website for OD December 5, 2025 through OD January 5, 2026.

The supplemental file is specific to the impacted Operating Days for the 60-Day Load Resource Data in SCED output files:

• 60d_Load_Resource_Data_in_SCED_02032026_thru_03062026_SUPPLEMENTAL

ADDITIONAL INFORMATION: As of March 7, 2026, all posted files contain the full sets of data. The supplemental files created and posted March 12, 2026 were only for the impacted output file type.  All other output files were unaffected.

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.

If you are receiving email from a public ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.