Title Limiting Ancillary Service Price to System-Wide Offer Cap
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Status Approved on 06/28/2021
Effective Dates


Date Gov Body Action Taken Next steps
06/28/2021 BOARD Approved
06/23/2021 TAC Recommended for Approval Board for consideration
06/10/2021 PRS Recommended for Approval TAC for consideration

Voting Record

Date Gov Body Motion Result
06/28/2021 BOARD To approve NPRR1080 as recommended by TAC in the 6/23/21 TAC Report Passed
06/23/2021 TAC To recommend approval of NPRR1080 as recommended by PRS in the 6/10/21 PRS Report with a recommended effective date of July 1, 2021 Passed
06/10/2021 PRS To grant NPRR1080 Urgent status; to recommend approval of NPRR1080 as revised by PRS; and to forward to TAC NPRR1080 and the Impact Analysis with a recommended effective date of upon ERCOT Board approval Passed


Status: Approved
Date Posted: Jun 3, 2021
Sponsor: ERCOT and IMM
Urgent: Yes
Sections: 4.5.1 and
Description: This Nodal Protocol Revision Request (NPRR) limits the Ancillary Service Market Clearing Prices for Capacity (MCPCs) to the effective SWCAP. This limitation will be achieved by reducing the Ancillary Service penalty factors used in Day-Ahead Market (DAM) and Supplemental Ancillary Services Market (SASM) to values equal to or immediately below the SWCAP.
Reason: Market efficiencies or enhancements

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