NOTICE DATE:  October 21, 2016

NOTICE TYPE:  M-A102116-01 NPRR

SHORT DESCRIPTION:  Implementation Details of NPRR495, NPRR736 and NPRR770

INTENDED AUDIENCE:  ERCOT Market Participants

DAY AFFECTED:  November 3, 2016

LONG DESCRIPTION:  ERCOT will be implementing Nodal Protocol Revision Request (NPRR) 495, Changes to Ancillary Services Capacity Monitor, NPRR736, Updates to the Ancillary Service Capacity Monitor Display, and NPRR770, Addition of Outaged Resource Capacity to the Ancillary Services Capacity Monitor, on November 3, 2016.

NPRR495 was approved by the ERCOT Board on May 14, 2013. It modifies the Ancillary Service Capacity Monitor to include additional information on the aggregate Ancillary Service responsibilities being carried by various Resource categories.

NPRR736 was approved by the ERCOT Board on December 8, 2015. It modifies the Ancillary Service Capacity Monitor to include the On-Line and Off-Line Reserves used for the Operating Reserve Demand Curve (ORDC) and information about capacity available to increase or decrease Base Points within 5 minutes.

NPRR770 was approved by the ERCOT Board on October 11, 2016.  It modifies the Ancillary Service Capacity Monitor to include additional information on aggregate Resource capacity that is on outage or only available under emergency.

All of the additional information noted above is provided by ERCOT both through Inter-Control Center Communications Protocol (ICCP) telemetry and the Market Information System (MIS) Public Area.

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

NPRR495, NPRR736, NPR770 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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