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NPRR589
Summary
| Title | Ancillary Service Offers in the Supplemental Ancillary Services Market |
|---|---|
| Next Group | |
| Next Step | |
| Status | Approved on 04/08/2014 |
| Effective Dates |
06/01/2014
All sections except for Section 6.7.2 09/23/2015
Section 6.7.2 |
Action
| Date | Gov Body | Action Taken | Next Steps |
|---|---|---|---|
| 04/08/2014 | BOARD | Approved | |
| 03/27/2014 | TAC | Recommended for Approval | ERCOT Board for consideration. |
| 03/18/2014 | PRS | Recommended for Approval | TAC for consideration. |
| 02/13/2014 | PRS | Recommended for Approval | PRS Impact Analysis review |
| 01/16/2014 | PRS | Deferred/Tabled | PRS language consideration |
Voting Record
| Date | Gov Body | Motion | Result |
|---|---|---|---|
| 04/08/2014 | BOARD | To approve NPRR589 as recommended by TAC in the 3/27/14 TAC Report. | Passed |
| 03/27/2014 | TAC | To recommend approval of NPRR589 as recommended by PRS in the 3/18/14 PRS Report. | Passed |
| 03/18/2014 | PRS | 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 |
| 02/13/2014 | PRS | To recommend approval of NPRR589 as amended by the 2/7/14 QMWG comments. | Passed |
| 01/16/2014 | PRS | To table NPRR589. | Passed |
Background
| Status: | Approved |
|---|---|
| Date Posted: | Dec 30, 2013 |
| Sponsor: | QMWG |
| Urgent: | No |
| Sections: | 5.2.2.2, 6.4.8.2, 6.4.8.2.1, 6.5.9.3.3, 6.7.2 |
| Description: | 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. |
| Reason: | ERCOT 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). |
Key Documents
Dec 30, 2013 - doc - 74 KB
Jan 20, 2014 - doc - 79 KB
Feb 7, 2014 - doc - 109.5 KB
Feb 17, 2014 - doc - 132 KB
Mar 12, 2014 - doc - 56.5 KB
Mar 19, 2014 - doc - 133.5 KB
Mar 28, 2014 - doc - 137 KB
Apr 11, 2014 - doc - 138 KB