NOTICE DATE: September 8, 2025

NOTICE TYPE: M-A090825-01 Release

SHORT DESCRIPTION: Release of NDCRC RTC+B changes to MOTE

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED: September 3, 2025

LONG DESCRIPTION: Net Dependable Capability and Reactive Capability (NDCRC) Real-Time Co-optimization Plus Batteries (RTC+B) changes have been released to the Market Operations Test Environment (MOTE) to facilitate market testing for the upcoming RTC+B release. All Market Participants are encouraged to review the changes presented in the MOTE to familiarize themselves with the RTC+B release that will go live to production on December 5, 2025. Certificates for use with MOTE NDCRC can be obtained by your User Security Administrator (USA) at https://testmis.ercot.com/midm. The MOTE NDCRC environment may be accessed by navigating to https://testmis.ercot.com/ndcrc/Home.do or clicking the NDCRC quick launch icon from the "Applications" page in the test Market Information System (MIS) portal.  For a comprehensive summary of the changes implemented in the NDCRC RTC+B MOTE release, please refer to the presentation attached to this Market Notice.

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