NPRR #385 · Revision Request
NPRR385 Negative Price Floor (formerly "Security Violation Analysis and Reporting and Negative Price Floor")
ReasonAs part of the holistic approach towards congestion irresolvable by Security-Constrained Economic Dispatch (SCED), the Congestion Irresolvable by SCED Task Force discussed the impact of Generation Resources on the other side of the constraints, in which ERCOT needs to back down. Those Generation Resources seem to be inequitably harmed as Real-Time Settlement Point Prices can drop to extremely negative values, which are unnecessary to send the proper price signal. This NPRR proposes an administrative price floor for Real-Time Settlement Point Prices of negative $251/MWh, consistent with the Energy Offer Curve offer floor described in Section 4.4.9.3.1, Energy Offer Curve Criteria, and the SCED over-generation power balance penalty curve of negative $251/MWh as established in the ERCOT Business Practice document "Setting the Shadow Price Caps and Power Balance Penalties in Security Constrained Economic Dispatch." The same negative $251/MWh price floor would also be applied to Day-Ahead Settlement Point Prices (DASPPs).
Created2011-07-21
Approved2012-12-11
Sections Affected
4.6.1.16.1.16.6.1.16.6.3.1
Summary
This Nodal Protocol Revision Request (NPRR) adds an administrative Settlement Point Price floor of negative $251/MWh.
Action Log 7 milestones
-
Jul 21
PRSRecommended for Approval→ PRS Impact Analysis review
-
Aug 18
PRSDeferred/Tabled→ PRS Impact Analysis review
-
Sep 22
PRSDeferred/Tabled→ PRS Impact Analysis review
-
Oct 18
PRSRecommended for Approval→ PRS Impact Analysis review
-
Nov 15
PRSRecommended for Approval→ TAC consideration of NPRR385
-
Nov 29
TACRecommended for Approval→ ERCOT Board consideration of NPRR385
-
Dec 11
BOARDApproved
Amendments
| Date | Body | Motion | Result |
|---|---|---|---|
| Jul 21 '11 | PRS | To recommend approval of NPRR385 as amended by the 6/21/11 Luminant Energy Company LLC comments. | Passed |
| Oct 18 '12 | PRS | To endorse the 7/21/11 PRS Report for NPRR385 as amended by the 10/16/12 Luminant Energy Company LLC comments and to request that NPRR385 return to the November 15, 2012 PRS meeting with an Impact Analysis. | Passed |
| Nov 15 '12 | PRS | To endorse and forward the 10/18/12 PRS Report as amended by the 11/14/12 ERCOT comments and Impact Analysis for NPRR385 to TAC with a recommended priority of 2013 and rank of 367. | Passed |
Ballots
| Date | Body | Result | Yes | No | Abstain | |
|---|---|---|---|---|---|---|
| WMS | Motion Fails | 2 | 4.75 | 15 | xls |
Documents 33
| Name | Type | Posted | Classification |
|---|---|---|---|
| 385NPRR-01 Security Violation Analysis and Reporting and Negativ | doc | Jun 14 '11 | Revision Request |
| 385NPRR-02 Luminant Energy Company LLC Comments 061711 | doc | Jun 17 '11 | Revision Request Comments |
| 385NPRR-03 Luminant Energy Company LLC Comments 062111 | doc | Jun 21 '11 | Revision Request Comments |
| 385NPRR-04 WMS Comments 071811 | doc | Jul 18 '11 | Revision Request Comments |
| 385NPRR-05 PRS Report 072111 | doc | Jul 27 '11 | Committee Report |
| 385NPRR-06 ERCOT Comments 081111 | doc | Aug 11 '11 | Revision Request Comments |
| 385NPRR-07 PRS Report 081811 | doc | Aug 22 '11 | Committee Report |
| 385NPRR-08 WMS Comments 091511 | doc | Sep 15 '11 | Revision Request Comments |
| 385NPRR-09 Preliminary Impact Analysis 092011 | doc | Sep 20 '11 | Staff Report |
| 385NPRR-10 PRS Report 092211 | doc | Sep 26 '11 | Committee Report |
| 385NPRR-11 Reliant Energy Retail Services Comments 092711 | doc | Sep 27 '11 | Revision Request Comments |
| 385NPRR-12 ERCOT Comments 101211 | doc | Oct 12 '11 | Revision Request Comments |
| 385NPRR-13 WMS Comments 101711 | doc | Oct 17 '11 | Revision Request Comments |
| 385NPRR-14 ROS Comments 101711 | doc | Oct 17 '11 | Revision Request Comments |
| 385NPRR-15 WMS Comments 110911 | doc | Nov 9 '11 | Revision Request Comments |
| 385NPRR-16 ROS Comments 111511 | doc | Nov 15 '11 | Revision Request Comments |
| 385NPRR-17 WMS Comments 120911 | doc | Dec 9 '11 | Revision Request Comments |
| 385NPRR-18 WMS Comments 021712 | doc | Feb 17 '12 | Revision Request Comments |
| 385NPRR-19 WMS Comments 031212 | doc | Mar 12 '12 | Revision Request Comments |
| 385NPRR-20 WMS Comments 071212 | doc | Jul 12 '12 | Revision Request Comments |
| 385NPRR-21 Luminant Energy Company LLC Comments 101612 | doc | Oct 16 '12 | Revision Request Comments |
| 385NPRR-22 PRS Report 101812 | doc | Oct 22 '12 | Committee Report |
| 385NPRR-23 PRS Voting Ballot 101812 | xls | Oct 22 '12 | Revision Request Ballot |
| 385NPRR-24 PRS Voting Ballot 101812 | xls | Oct 19 '12 | Revision Request Ballot |
| 385NPRR-25 Luminant Energy Company LLC Comments 111312 | doc | Nov 13 '12 | Revision Request Comments |
| 385NPRR-26 ERCOT Comments 111412 | doc | Nov 14 '12 | Revision Request Comments |
| 385NPRR-27 Impact Analysis 111412 | doc | Nov 14 '12 | Staff Report |
| 385NPRR-28 Luminant Energy Company LLC Comments 111512 | doc | Nov 15 '12 | Revision Request Comments |
| 385NPRR-29 PRS Report 111512 | doc | Nov 19 '12 | Committee Report |
| 385NPRR-30 Revised Impact Analysis 112012 | doc | Nov 20 '12 | Staff Report |
| 385NPRR-31 TAC Report 112912 | doc | Nov 30 '12 | Committee Report |
| 385NPRR-32 TAC Voting Ballot 112912 | xls | Nov 30 '12 | Revision Request Ballot |
| 385NPRR-33 Board Report 121112 | doc | Dec 12 '12 | Committee Report |
Meetings That Took It Up 45