NOTICE DATE: October 5, 2026

NOTICE TYPE: M-A100526-01 Operations

SHORT DESCRIPTION: Notification of Change of Generation Resource Designation (NCGRD) for Chisholm Grid LLC (CHISMGRD_ESR1)

INTENDED AUDIENCE: ERCOT Market Participants

DAY AFFECTED: November 4, 2026

LONG DESCRIPTION: On October 5, 2026, ERCOT received an NCGRD for the following Resource:

• Chisholm Grid LLC (CHISMGRD_ESR1)

The NCGRD indicates that as of November 4, 2026, the Resource, which is currently under a mothballed designation, will return to an operational designation.

Pursuant to ERCOT Protocol section 3.14.1.9(2), ERCOT has posted the NCGRD on the ERCOT website, where NCGRDs may be accessed.

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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