NOTICE DATE: September 11, 2026

NOTICE TYPE:  M-D091126-01  Releases

SHORT DESCRIPTION: RIOO Off-cycle Release

INTENDED AUDIENCE: All Market Participants (User Security Administrators (USAs), Resource Entities, TDSPs)

DAYS AFFECTED: September 11, 2026, 19:30 - 19:45

LONG DESCRIPTION: The Resource Integration and Ongoing Operations (RIOO) system will be unavailable on September 11, 2026, 19:30 - 19:45 to deploy off-cycle release changes. This release includes only changes related to a request for information tool within RIOO developed to intake information related to verification of certain Large Loads in Batch Zero and to obtain certain information about the state and community impacts of data center facilities requesting to interconnect at 25 MW or more. The changes will not modify other parts of RIOO.

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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