NOTICE DATE: June 2, 2022

NOTICE TYPE: W-A042922-02 Operations

SHORT DESCRIPTION: Update to the Wharton County Export Generic Transmission Constraint

INTENDED AUDIENCE: ERCOT Market Participants

DAYS AFFECTED: June 2, 2022

LONG DESCRIPTION: The Generic Transmission Constraint (GTC) definition of the Wharton County Export GTC is being updated to reflect changes in the system topology and to allow for more accurate monitoring of real-time power flows.

The purpose of this notice is to provide contemporaneous notification to all ERCOT Market Participants of this update. ERCOT will begin enforcing the updated Wharton County Export GTC on June 2, 2022.

Details associated with all GTCs (EMIL ID NP3-770-M , Report ID 11425 ) can be found on the ERCOT Market Information System (MIS) Grid Transmission page under the Generic Transmission Constraints Methodology Secure Area. A Digital Certificate with role ICE_M_VIEW_ECEII is required to access this ECEII data.

ADDITIONAL INFORMATION: Please review the ERCOT website for previous Market Notices related to this subject.

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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