NOTICE DATE: December 15, 2025

NOTICE TYPE: M-B121525-01 Operations

SHORT DESCRIPTION: ERCOT has posted new documents to facilitate the Large Load Interconnection process defined in Section 9 of the Planning Guide.

INTENDED AUDIENCE: Transmission and/or Distribution Service Providers (TDSPs), Transmission Operators (TOs), Interconnecting Large Load Entities (ILLEs), Resource Entities (REs), and Interconnecting Entities (IEs)

DAYS AFFECTED: Ongoing

LONG DESCRIPTION: A significant portion of Planning Guide Revision Request (PGRR) 115, Related to NPRR1234, Interconnection Requirements for Large Loads and Modeling Standards for Loads 25 MW or Greater, became effective on December 15, 2025. In accordance with this newly effective language, ERCOT has posted two documents to the Large Load Integration section of the ERCOT website. The Load Information Form contains all project information, including the Load Commissioning Plan, required for an interconnecting Transmission Service Provider to request a new Large Load Interconnection. ERCOT has also posted a document detailing the acceptable methods for submitting required information and other communications needed to facilitate the Large Load Interconnection process as required by Planning Guide Section 9.1(2).

ACTION REQUIRED: All stakeholders in the Large Load Interconnection process must use these documents for submission of information going forward.

CONTACT: If you have any questions, please submit them to LargeLoadInterconnection@ercot.com.  You may also contact your ERCOT Account Manager, 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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