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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.
Action Log 5 milestones
Amendments
DateBodyMotionResult
Feb 13 '14PRS To recommend approval of NPRR589 as amended by the 2/7/14 QMWG comments.Passed
Documents 8
NameTypePostedClassification
589NPRR-01 Ancillary Service Offers in the Supplemental Ancillar doc Dec 30 '13 Revision Request
589NPRR-02 PRS Report 011614 doc Jan 20 '14 Committee Report
589NPRR-03 QMWG Comments 020714 doc Feb 7 '14 Revision Request Comments
589NPRR-04 PRS Report 021314 doc Feb 17 '14 Committee Report
589NPRR-05 Impact Analysis 031214 doc Mar 12 '14 Staff Report
589NPRR-06 PRS Report 031814 doc Mar 19 '14 Committee Report
589NPRR-07 TAC Report 032714 doc Mar 28 '14 Committee Report
589NPRR-08 Board Report 040814 doc Apr 11 '14 Committee Report
Meetings That Took It Up 26
DateMeetingCommitteeStatus
Aug 11 '15 Board of Directors Meeting BOARD Concluded
Jul 30 '15 TAC Meeting TAC Concluded
Jul 16 '15 PRS Meeting PRS Concluded
Jun 11 '15 PRS Meeting PRS Concluded
May 14 '15 PRS Meeting PRS Concluded
Dec 3 '14 WMS Meeting WMS Concluded
Nov 18 '14 QMWG Meeting QMWG Concluded
Oct 29 '14 WMS Meeting WMS Concluded
Oct 21 '14 QMWG Meeting QMWG Concluded
Sep 23 '14 QMWG Meeting QMWG Concluded
Sep 3 '14 WMS Meeting WMS Concluded
Aug 26 '14 QMWG Meeting QMWG Concluded
Aug 6 '14 WMS Meeting WMS Concluded
Jul 29 '14 QMWG Meeting QMWG Concluded
Jul 1 '14 QMWG Meeting QMWG Concluded
Jun 26 '14 TAC Meeting TAC Concluded
Apr 8 '14 Board of Directors Meeting BOARD Concluded
Mar 27 '14 TAC Meeting TAC Concluded
Mar 18 '14 PRS Meeting PRS Concluded
Feb 20 '14 Joint CWG/MCWG Meeting CREDITWG Concluded
Feb 13 '14 PRS Meeting PRS Concluded
Feb 5 '14 WMS Meeting WMS Concluded
Feb 4 '14 QMWG Meeting QMWG Concluded
Jan 16 '14 PRS Meeting PRS Concluded
Jan 8 '14 WMS Meeting WMS Concluded
Jan 7 '14 QMWG Meeting QMWG Concluded