NOTICE DATE: May 26, 2022
NOTICE TYPE: M-A042622-03 NPRR
SHORT DESCRIPTION: Implementation Details of NPRR939 and related NOGRRs 191 and 198
INTENDED AUDIENCE: All Market Participants
DAYS AFFECTED: May 27, 2022
LONG DESCRIPTION: On May 27, 2022, Protocol and Nodal Operating Guide language associated with Nodal Protocol Revision Request (NPRR) 939, Modification to Load Resources Providing RRS to Maintain Minimum PRC on Generators During Scarcity Conditions; Nodal Operating Guide Revision Request (NOGRR) 191, Related to NPRR939, Modification to Load Resources Providing RRS to Maintain Minimum PRC on Generators During Scarcity Conditions; and NOGRR198, Alignment Changes for November 1, 2019 Nodal Operating Guide – NPRR939, will be implemented.
NPRR939 changes the practice of dividing Load Resources other than Controllable Load Resources providing Responsive Reserve (RRS) into two groups. Instead, ERCOT will divide these Resources into groups of approximately 500 MW each. NOGRR 191 allows ERCOT to manually deploy Load Resources other than Controllable Load Resources providing RRS to maintain a minimum 500 MWs of Physical Responsive Capability (PRC) reserves on Generation Resources. This allows ERCOT to continously balance demand with supply while maintaining the stable grid frequency for smaller disturbances. NOGRR198 aligns Nodal Operating Guide Section 4.5.3.3, EEA Levels, with the changes made in NPRR939.
In addition, the Certified report on the Market Information System (MIS) Certified Area will be renamed "Group Assignments for Load Resources Providing RRS" but the report link will remain the same (EMIL ID NP6-552-CD | Report Type ID 10041). A Digital Certificate is required to access the MIS.
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.
NPRR939, NOGRR191, NOGRR198 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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