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NOTICE DATE:  June 21, 2018


SHORT DESCRIPTION:  Implementation Details of PGRR057

INTENDED AUDIENCE:  Resource Entities (REs) and Transmission Service Providers (TSPs)

DAY AFFECTED:  July 2, 2018

LONG DESCRIPTION:  On July 2, 2018, ERCOT will partially implement Planning Guide Revision Request (PGRR) 057, Responsibilities for Performing Geomagnetic Disturbance (GMD) Vulnerability Assessments.  Paragraphs (1) and (2) of Section 3.1.8, Planning Geomagnetic Disturbance (GMD) Activities, of PGRR057 will be implemented on July 2, 2018, with remaining Sections of PGRR057 to be implemented at a later date.

This PGRR aligns the Planning Guides with North American Electric Reliability Corporation (NERC) Reliability Standard TPL-007-1, Transmission System Planned Performance for Geomagnetic Disturbance Events, by identifying responsibilities for performing studies needed to complete Geomagnetic Disturbance (GMD) vulnerability assessments.


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.   

PGRR057 and associated documents can be found on the ERCOT website.

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 [log in to unmask].

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