NPRR #1145 · Revision Request

NPRR1145 Use of State Estimator-Calculated ERCOT-Wide TLFs in Lieu of Seasonal Base Case ERCOT-Wide TLFs for Settlement

Approved sponsor ERCOT posted 2022-07-27 ercot.com

ReasonMarket efficiencies or enhancements

Created2022-08-11

Approved2023-05-11

Sections Affected

2.113.1.113.1.213.2.213.2.313.2.413.2.513.2.5 (new)13.413.4.1

Summary

This Nodal Protocol Revision Request (NPRR) changes the 15-minute level ERCOT-wide Transmission Loss Factors (TLFs) that are used in the Settlement process from seasonal base case TLFs to State Estimator-calculated TLFs in Energy Management System (EMS). It also clarifies the use of Non-Opt-In Entity (NOIE) deemed actual TLFs to remove behind-the-meter Transmission Losses.

Timeline

Jul 27 '22
PRSFiled by ERCOT
- 1145NPRR-01 Use of State Estimator-Calculated ERCOT-Wide TLFs in Lieu of Seasonal Base Case ERCOT-Wide TLFs for Settlement_072722 Jul 27 '22 · Revision Request
- 1145NPRR-02 Impact Analysis 072722 Jul 27 '22 · Staff Report
Aug 11 '22
PRS PRS Meeting
PRSDeferred/Tabled Tabled Referred → WMS
“to table NPRR1145 and refer the issue to WMS” — Passed

→ Language Consideration

Motion Carries 7–0 roll call
- 1145NPRR-03 ERCOT Comments 081022 Aug 10 '22 · Revision Request Comments
Sep 7 '22
WMS WMS Meeting
Motion Carries 7.5–0 roll call

“To request PRS continue to table NPRR1145 for further review by WMWG”
- 1145NPRR-04 PRS Ballot 081122 Aug 16 '22 · Revision Request Ballot
- 1145NPRR-05 PRS Report 081122 Aug 16 '22 · Committee Report
Sep 15 '22
PRS PRS Meeting
- 1145NPRR-06 WMS Ballot 090722 Sep 14 '22 · Revision Request Ballot
- 1145NPRR-07 WMS Comments 091422 Sep 14 '22 · Revision Request Comments
Oct 12 '22
Listed without action at 6 meetings (Oct 12 '22 – Dec 8 '22)
- WMS Meeting Oct 12 '22
- PRS Meeting Oct 13 '22
- WMWG Meeting by Webex Only Oct 21 '22
- WMS Meeting by Webex Only Nov 2 '22
- PRS Meeting by Webex Only Nov 11 '22
- PRS Meeting By Webex Only Dec 8 '22
Jan 11 '23
WMS WMS Meeting
Motion Carries 6.25–1.25 roll call

“Motion to table consideration of endorsement of NPRR1145 as amended by the 8/10/22 ERCOT comments”
Jan 17 '23
PRS PRS Meeting
- 1145NPRR-08 WMS Ballot 011123 Jan 13 '23 · Revision Request Ballot
- 1145NPRR-09 WMS Comments 011323 Jan 13 '23 · Revision Request Comments
Feb 1 '23
Listed without action at 1 meeting
- WMS Meeting - Webex Only (RESCHEDULED) Feb 1 '23
Feb 6 '23
WMS WMS Meeting - Webex Only
Motion Carries 7.5–0 roll call

“To endorse NPRR1145 as amended by the 8/10/22 ERCOT comments”
Feb 9 '23
PRS PRS Meeting - Webex Only
PRSRecommended for Approval Recommended for approval Amended by the Aug 10 '22 ERCOT comments
“to recommend approval of NPRR1145 as amended by the 8/10/22 ERCOT comments” — Passed

→ Impact Analysis Consideration

Motion Carries 7–0 roll call
Mar 8 '23
PRS PRS Meeting
PRSRecommended for Approval Recommended for approval Forwarded → TAC priority 2024 · rank 4010
“to endorse and forward to TAC the 2/9/23 PRS Report and 7/27/22 Impact Analysis for NPRR1145 with a recommended priority of 2024 and rank of 4010” — Passed

→ Revision Request Consideration

Motion Carries 7–0 roll call
- 1145NPRR-10 WMS Ballot 020623 Feb 14 '23 · Revision Request Ballot
- 1145NPRR-11 WMS Comments 021423 Feb 14 '23 · Revision Request Comments
- 1145NPRR-12 PRS Ballot 020923 Feb 14 '23 · Revision Request Ballot
- 1145NPRR-13 PRS Report 020923 Feb 14 '23 · Committee Report
Mar 21 '23
TAC TAC Meeting
TACRecommended for Approval Recommended for approval Amended by the Mar 8 '23 TAC comments
“to recommend approval of NPRR1145 as recommended by PRS in the 3/8/23 PRS Report as revised by TAC” — Passed

→ Revision Request Consideration

Motion Passes 30–0 roll call
- 1145NPRR-14 PRS Ballot 030823 Mar 10 '23 · Revision Request Ballot
- 1145NPRR-15 PRS Report_030823 Mar 10 '23 · Committee Report
Apr 18 '23
BOARD Board of Directors Meeting
BOARDRecommended for Approval Recommended for approval
“to recommend approval of NPRR1145 as recommended by TAC in the 3/21/23 TAC Report” — Passed

→ Revision Request Consideration
- 1145NPRR-16 TAC Ballot 032123 Mar 24 '23 · Revision Request Ballot
- 1145NPRR-17 TAC Report 032123 Mar 24 '23 · Committee Report
May 11 '23
PUCT
PUCTApproved Approved
“to approve NPRR1145 and accompanying ERCOT Market Impact Statement as presented in Project No. 54445, Review of Rules Adopted by the Independent Organization” — Passed
- 1145NPRR-18 Board Report 041823 Apr 20 '23 · Committee Report
—
Posted since the last meeting
- 1145NPRR-19 PUCT Report 051123 May 12 '23 · Committee Report