Title: Revise Definition of M1a to Reflect Actual Calendar Days
Next Group:
Next Step:
Status: Approved on 02/12/2019
Effective Dates:


Date Gov Body Action Taken Next Steps
02/12/2019 BOARD Approved
01/30/2019 TAC Recommended for Approval Revision Request Consideration
12/13/2018 PRS Recommended for Approval Revision Request Consideration
11/15/2018 PRS Recommended for Approval Impact Analysis Consideration

Voting Record

Date Gov Body Motion Result
02/12/2019 BOARD approved NPRR907 as recommended by TAC in the 1/30/19 TAC Report Passed
01/30/2019 TAC to recommend approval of NPRR907 as recommended by PRS in the 12/13/18 PRS Report Passed
12/13/2018 PRS to endorse and forward to TAC the 11/15/18 PRS Report as revised by PRS and the Impact Analysis for NPRR907 Passed
11/15/2018 PRS to recommend approval of NPRR907 as submitted Passed

Vote tallies here reflect individual votes, not the weight of the votes by market segment. Affirmative votes are not recorded in these vote tallies. For additional details on the voting record, please consult the Recommendation or Action Report, or the official vote tally if available, as posted in the key documents.


Status: Approved
Date Posted: Oct 29, 2018
Sponsor: ERCOT
Urgent: No
Description: The M1a component of the Total Potential Exposure (TPE) calculation sets a time period meant to reflect the number of days between an Operating Day and the initiation of a Mass Transition of the Market Participant’s Electric Service Identifiers (ESI IDs) (Mass Transition days are reflected in the M1b component). This Nodal Protocol Revision Request (NPRR) replaces the existing fixed value of M1a with a value that can vary based on non-Bank Business Days and ERCOT holidays following the specific Operating Day.
Reason: Market efficiencies or enhancements

Key Documents

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