NPRR #589 · Revision Request

NPRR589 Ancillary Service Offers in the Supplemental Ancillary Services Market

Approved sponsor QMWG posted 2013-12-30 ercot.com

ReasonERCOT has observed several instances since Nodal go-live of insufficient quantities of Ancillary Service Offers available to clear a SASM in Real-Time. In these instances, ERCOT’s alternative to purchasing required Ancillary Services through a competitive market clearing process is to order a Resource On-Line through the Reliability Unit Commitment (RUC) process. This results in a non-market solution that would be expected to be less efficient than a competitive market clearing process for the ERCOT market. The reason more offers have not been available to SASMs is due to the need to update offers to reflect changing conditions in Real-Time. As currently designed, SASM Ancillary Service procurement only considers offers that were in the system prior to notification of the SASM. This requires QSEs to leave offers in continually or update them every hour to reflect the actual cost of the Ancillary Service as system conditions and market conditions change in Real-Time. By allowing QSEs to submit offers after notification of a SASM, more offers will be available because of the reduced risk of having stale offers in the Market Management System (MMS).

Created2014-01-16

Approved2014-04-08

Sections Affected

5.2.2.26.4.8.26.4.8.2.16.5.9.3.36.7.2

Summary

This Nodal Protocol Revision Request (NPRR) adds language to the Supplemental Ancillary Services Market (SASM) timeline to allow Qualified Scheduling Entities (QSEs) to submit Ancillary Service Offers after notification of the need to run a SASM.

Timeline

Dec 30 '13
PRSFiled by QMWG
- 589NPRR-01 Ancillary Service Offers in the Supplemental Ancillar Dec 30 '13 · Revision Request
Jan 7 '14
Listed without action at 2 meetings (Jan 7 '14 – Jan 8 '14)
- QMWG Meeting Jan 7 '14
- WMS Meeting Jan 8 '14
Jan 16 '14
PRS PRS Meeting
PRSDeferred/Tabled Tabled
“To table NPRR589.” — Passed

→ PRS language consideration
Feb 4 '14
QMWG QMWG Meeting
- 589NPRR-02 PRS Report 011614 Jan 20 '14 · Committee Report
Feb 5 '14
Listed without action at 1 meeting
- WMS Meeting Feb 5 '14
Feb 13 '14
PRS PRS Meeting
PRSRecommended for Approval Recommended for approval Amended by the Feb 7 '14 QMWG comments
“To recommend approval of NPRR589 as amended by the 2/7/14 QMWG comments.” — Passed

→ PRS Impact Analysis review
- 589NPRR-03 QMWG Comments 020714 Feb 7 '14 · Revision Request Comments
Feb 20 '14
CREDITWG Joint CWG/MCWG Meeting
- 589NPRR-04 PRS Report 021314 Feb 17 '14 · Committee Report
Mar 18 '14
PRS PRS Meeting
PRSRecommended for Approval Recommended for approval Forwarded → TAC priority 2014 · rank 1220
“To endorse and forward the 2/13/14 PRS Report and Impact Analysis for NPRR589 to TAC with a recommended priority of 2014 and rank of 1220.” — Passed

→ TAC for consideration.
- 589NPRR-05 Impact Analysis 031214 Mar 12 '14 · Staff Report
Mar 27 '14
TAC TAC Meeting
TACRecommended for Approval Recommended for approval
“To recommend approval of NPRR589 as recommended by PRS in the 3/18/14 PRS Report.” — Passed

→ ERCOT Board for consideration.
- 589NPRR-06 PRS Report 031814 Mar 19 '14 · Committee Report
Apr 8 '14
BOARD Board of Directors Meeting
BOARDApproved Recommended for approval
“To approve NPRR589 as recommended by TAC in the 3/27/14 TAC Report.” — Passed
- 589NPRR-07 TAC Report 032714 Mar 28 '14 · Committee Report
Jun 26 '14
TAC TAC Meeting
- 589NPRR-08 Board Report 040814 Apr 11 '14 · Committee Report
Jul 1 '14
Listed without action at 15 meetings (Jul 1 '14 – Aug 11 '15)
- QMWG Meeting Jul 1 '14
- QMWG Meeting Jul 29 '14
- WMS Meeting Aug 6 '14
- QMWG Meeting Aug 26 '14
- WMS Meeting Sep 3 '14
- QMWG Meeting Sep 23 '14
- QMWG Meeting Oct 21 '14
- WMS Meeting Oct 29 '14
- QMWG Meeting Nov 18 '14
- WMS Meeting Dec 3 '14
- PRS Meeting May 14 '15
- PRS Meeting Jun 11 '15
- PRS Meeting Jul 16 '15
- TAC Meeting Jul 30 '15
- Board of Directors Meeting Aug 11 '15