NOTICE DATE:  September 19, 2016


SHORT DESCRIPTION:  Implementation Details of NPRR691 and NOGRR143


DAY AFFECTED:  October 1, 2016

LONG DESCRIPTION:  On October 1, 2016, Nodal Protocol Revision Request (NPRR) 691, Alignment of Protocols with NERC Reliability Standard BAL-001-TRE-1, will be implemented, and Nodal Operating Guide Revision Request (NOGRR) 143, Alignment of Nodal Operating Guides with NERC Reliability Standard, BAL-001-TRE-1, will be partially implemented.

NPRR691 was approved by the ERCOT Board on February 9, 2016 and NOGRR143 was approved by the Technical Advisory Committee (TAC) on February 25, 2016.

NPRR691 and NOGRR143 align the Protocols and the Nodal Operating Guides with North American Electric Reliability Corporation (NERC) Reliability Standard, BAL-001-TRE-1, Primary Frequency Response in the ERCOT Region. 

For NOGRR143, the following Operating Guide Sections will be updated:

·         2.2.7, Turbine Speed Governors

·         2.2.8, Performance/Disturbance/Compliance Analysis

·         8, Attachment J, Initial and Sustained Measurements for Primary Frequency Response

The NOGRR143 language that remains grey-boxed (Section 8, Attachment C, Turbine Governor Speed Tests) will be implemented at a future date.

ADDITIONAL INFORMATION:  Pursuant to Nodal Protocol Section 21.6, Nodal Protocol Revision Implementation, Nodal Operating Guide Section 1.3.6, Nodal Operating Guide Revision Implementation, ERCOT is required to provide notice as soon as practicable, but no later than ten days prior to implementation.   

NPRR691 and NOGRR143 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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