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NPRR968

Summary

Title Revise EEA Level 3 Triggers from 1375 MW to 1430 MW to Align with New Most Severe Single Contingency Value
Next Group
Next Step
Status Approved on 12/10/2019
Effective Dates
01/01/2020

Action

Date Gov Body Action Taken Next steps
12/10/2019 BOARD Approved
10/23/2019 TAC Recommended for Approval Revision Request Consideration
10/10/2019 PRS Recommended for Approval Revision Request Consideration
09/12/2019 PRS Recommended for Approval Impact Analysis Consideration

Voting Record

Date Gov Body Motion Result
12/10/2019 BOARD to approve NPRR968 as recommended by TAC in the 10/23/19 TAC Report Passed
10/23/2019 TAC to recommend approval of NPRR968 as recommended by PRS in the 10/10/19 PRS Report Passed
10/10/2019 PRS to endorse and forward to TAC the 9/12/19 PRS Report and the Impact Analysis for NPRR968 Passed
09/12/2019 PRS to recommend approval of NPRR968 as submitted Passed

Background

Status: Approved
Date Posted: Aug 28, 2019
Sponsor: ERCOT
Urgent: No
Sections: 6.5.9.4.2
Description: This Nodal Protocol Revision Request (NPRR) updates Protocol language for compliance with North American Electric Reliability Corporation (NERC) Reliability Standards BAL-002-3, Disturbance Control Standard – Contingency Reserve for Recovery from a Balancing Contingency Event, and EOP-011-1, Emergency Operations. The proposed language changes the Physical Responsive Capability (PRC) trigger for Energy Emergency Alert (EEA) Level 3 to match a new Most Severe Single Contingency (MSSC) of 1,430 MW, which ERCOT intends to implement on January 1, 2020. ERCOT is updating the MSSC value from the former value of 1,375 MW to more accurately reflect the expected impact of the loss of either of the South Texas Project nuclear generating units, based on additional data ERCOT has obtained. Attachment 1 of EOP-011-1 requires ERCOT to declare an EEA Level 3 if it is unable to maintain PRC above its minimum contingency reserve requirement, which is defined in Requirement R2 of BAL-002-3 to be the MSSC. ERCOT will modify its Operating Procedures and processes following the approval of this NPRR.
Reason: Regulatory requirements

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