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NOTICE DATE: April 19, 2021


SHORT DESCRIPTION: Partial implementation details of PGRR070

INTENDED AUDIENCE: ERCOT Market Participants, Transmission Service Providers (TSPs), and Resource Entities

DAYS AFFECTED: May 1, 2021

LONG DESCRIPTION: On May 1, 2021, Planning Guide language related to Planning Guide Revision Request (PGRR) 070, Revised Responsibilities for Performing Geomagnetic Disturbance (GMD) Vulnerability Assessments, will be partially implemented. Specifically, paragraph (8) of Section 3.1.8, Planning Geomagnetic Disturbance (GMD) Activities, will be unboxed. 

PGRR070 aligns the Planning Guide with North American Electric Reliability Corporation (NERC) Reliability Standards by identifying responsibilities for performing studies needed to complete GMD Vulnerability Assessments.

Remaining Planning Guide language related to PGRR070 will be implemented at a later date.

ADDITIONAL INFORMATION: Pursuant to Planning Guide Section 1.2.6, Planning Guide Revision Implementation, ERCOT is required to provide notice as soon as practicable, but no later than ten days prior to implementation.

PGRR070 and associated documents can be found on the ERCOT website.

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

CONTACT: Please send any questions via email to [log in to unmask].

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