CRR; Operations

Wed, Feb 10, 2021 08:57 AM

W-A021021-01 Removal of the Pig Creek to Solstice (PIGSOL) Generic Transmission Constraint (GTC)

NOTICE DATE: February 10, 2021

NOTICE TYPE: W-A021021-01 Operations

SHORT DESCRIPTION: Removal of the Pig Creek to Solstice (PIGSOL) Generic Transmission Constraint (GTC)


DAYS AFFECTED: March 4, 2021

LONG DESCRIPTION: ERCOT implemented the PIGSOL GTC in November 2020 to resolve local stability issues associated with generation in West Texas. With the implementation of the Far West Texas 2.0 transmission projects within the region, there is no longer the need to continue enforcing the PIGSOL GTC. ERCOT will remove the GTC from the Transmission Constraint Manager and cease posting limits for and enforcing this GTC on March 4, 2021.

The purpose of this Notice is to provide contemporaneous notification to all ERCOT Market Participants of this update. 

ADDITIONAL INFORMATION: Details associated with all GTCs can be found on the ERCOT Market Information System (MIS) Grid Transmission page under the Generic Transmission Limits. A Digital Certificate is required to access the MIS Secure Area.

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

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