NPRR #339 · Revision Request
NPRR339 Modifications to Heuristic Rules to Determine LMP at De-energized Electrical Bus and Treatment of CRR Offers at De-energized Settlement Points
Reason(a) The current Protocol language for determining the LMP at de-energized Electrical Buses using heuristic rules prevents ERCOT from correcting the LMP when the heuristic rules fail under certain scenarios. This NPRR will allow ERCOT the ability to quickly respond to correct deficiencies found in the heuristic rules to determine LMPs at de-energized Electrical Buses.(b) Currently, CRR offers submitted at de-energized Settlement Points are not awarded in the DAM, no matter what the clearing prices are, and the CRRs settle at Real-Time prices. This NPRR provides that CRR offers submitted at de-energized Settlement Points will always settle at Day-Ahead prices. This is consistent with the treatment of PTP Obligation bids in the DAM, which are not awarded in this scenario, such that no Qualified Scheduling Entity (QSE) can purchase a Real-Time congestion hedge when either the source or sink Settlement Point is de-energized in the DAM.
Created2011-03-24
Approved2011-04-19
Sections Affected
4.4.54.5.16.6.1
Summary
This Nodal Protocol Revision Request (NPRR): (a) Extends the heuristic rules to determine the Locational Marginal Price (LMP) at de-energized Electrical Buses; and (b) Changes the treatment of Congestion Revenue Right (CRR) offers when either the source or sink Settlement Point is de-energized in the DAM.
Action Log 3 milestones
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Mar 24
PRSRecommended for Approval→ TAC consdieration of NPRR339
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Apr 7
TACRecommended for Approval→ ERCOT Board consideration of NPRR339
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Apr 19
BOARDApproved
Documents 9
| Name | Type | Posted | Classification |
|---|---|---|---|
| 339NPRR-01 Modifications to Heuristic Rules to Determine LMP at | doc | Mar 18 '11 | Revision Request |
| 339NPRR-02 Preliminary Impact Analysis 031811 | doc | Mar 18 '11 | Staff Report |
| 339NPRR-03 Urgency Vote Ballot 032311 | xls | Mar 23 '11 | Revision Request Ballot |
| 339NPRR-04 PRS Report 032411 | doc | Mar 28 '11 | Committee Report |
| 339NPRR-05 PRS Comments 040411 | doc | Apr 4 '11 | Revision Request Comments |
| 339NPRR-06 Cost Benefit Analysis 040411 | xls | Apr 4 '11 | Staff Report |
| 339NPRR-07 Impact Analysis 040711 | doc | Apr 7 '11 | Staff Report |
| 339NPRR-08 TAC Report 040711 | doc | Apr 7 '11 | Committee Report |
| 339NPRR-09 Board Report 041911 | doc | Apr 20 '11 | Committee Report |
Meetings That Took It Up 4
| Date | Meeting | Committee | Status |
|---|---|---|---|
| Apr 19 '11 | Board of Directors Meeting | BOARD | Concluded |
| Apr 7 '11 | TAC Meeting | TAC | Concluded |
| Apr 1 '11 | Special PRS Meeting | PRS | Concluded |
| Mar 24 '11 | PRS Meeting | PRS | Concluded |