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NPRR576
Summary
| Title | Changing Non-Spin Service to be Dispatched by ERCOT (formerly "Changing Non-Spin Service to an Off-Line Service") |
|---|---|
| Next Group | |
| Next Step | |
| Status | Approved on 04/08/2014 |
| Effective Dates |
06/01/2014
|
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 |
| 11/21/2013 | PRS | Deferred/Tabled | PRS language consideration |
Voting Record
| Date | Gov Body | Motion | Result |
|---|---|---|---|
| 04/08/2014 | BOARD | To approved NPRR576 as recommended by TAC in the 3/27/14 TAC Report. | Passed |
| 03/27/2014 | TAC | To recommend approval of NPRR576 as recommended by PRS in the 3/18/14 PRS Report, as amended by the 3/25/14 CPS comments, and as revised by TAC with a recommendation of $75 per MWh as the minimum offer floor for On-Line Non-Spin. | Passed |
| 03/18/2014 | PRS | To recommend approval of NPRR576 as amended by the 3/18/14 CPS Energy comments and as revised by PRS, and to forward it to TAC; and requested that TAC assign a value to X. | Passed |
| 11/21/2013 | PRS | To table NPRR576 and to refer issues to ROS and WMS. | Passed |
Background
| Status: | Approved |
|---|---|
| Date Posted: | Oct 24, 2013 |
| Sponsor: | GDF Suez NA Inc. |
| Urgent: | Yes |
| Sections: | 2.1, 3.8.3, 3.17.3, 6.4.3.2, 6.5.7.5, 6.5.7.6.2.3, 8.1.1.2.1.3, 8.1.1.3.3, 8.1.1.4.3 |
| Description: | This Nodal Protocol Revision Request (NPRR) continues to allow On-Line Non-Spin, but places it behind the High Ancillary Service Limit (HASL). This NPRR also proposes the reinstatement of a minimum offer floor for On-Line Non-Spin, but leaves the determination of its value (value of X) to TAC. |
| Reason: | Currently Non-Spin can be provided by On-Line Generation Resources which are always available to Security-Constrained Economic Dispatch (SCED). This creates several issues both from a reliability and market perspective. It reduces reliability because it is being deployed before it is needed therefore no longer there when it is truly needed; and if Entities know this is coming in, they have less MWs in SCED, thus the total available response in system is lower at all times. From a market perspective On-Line Non-Spinning reserves create a non-linearity in prices, thus preventing true scarcity prices as the large amount of On-Line creates an artificial buffer in the supply stack. |
Key Documents
Oct 24, 2013 - doc - 200.5 KB
Nov 25, 2013 - doc - 202.5 KB
Mar 12, 2014 - doc - 199 KB
Mar 18, 2014 - doc - 205 KB
Apr 8, 2014 - doc - 236.5 KB
Mar 25, 2014 - doc - 211 KB
Mar 26, 2014 - doc - 55 KB
Apr 8, 2014 - doc - 245.5 KB
Apr 3, 2014 - xls - 111 KB
Apr 9, 2014 - doc - 247 KB