Notice_Operations@lists.ercot.com

7/30/25, 9:46 AM

M-A073025-01 Full and Redacted Representations of RTC+B Network Operations Model Have Been Posted

NOTICE DATE: July 30, 2025

NOTICE TYPE: M-A073025-01 Operations

SHORT DESCRIPTION: Full and Redacted Representations of RTC+B Network Operations Model Have Been Posted

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED: July 30, 2025

LONG DESCRIPTION: The Real-Time Co-optimization Plus Batteries (RTC+B) project is anticipated to go-live on December 5, 2025. In addition to making significant Market design changes, this project also transitions to a new method of representing Energy Storage Resources (ESRs) in the ERCOT Network Operations Model.

To help Market Participants prepare for the schema changes to the Network Operations Model associated with this transition, ERCOT has created two RTC+B representations of the July ML4 CIM Network Operations Model. 

  • A redacted model has been posted to the Preview of Modified Redacted CIM Network Model page of the ERCOT Market Information System (MIS). 
  • For Transmission Service Providers, a full version of this representative model is posted to the Network Model Management System (NMMS) ERCOT Critical Energy Infrastructure Information (ECEII) Citrix Postings location within the ECEII_NMMS_RTC_Preview folder.

Notable changes in the posted model:

  • BatteryGeneratingUnit instances have replaced the combination of HydroGeneratingUnit and ControllableLoadResource instance pairs that are currently used to represent ESRs.
  • The name of each BatteryGeneratingUnit instance is different than the name of its HydroGeneratingUnit predecessor.

CONTACT: If you have any questions on the changes to the Network Operations Model, please contact NOMCRHelp@ercot.com. For all other 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