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NPRR339
Summary
| Title | Modifications to Heuristic Rules to Determine LMP at De-energized Electrical Bus and Treatment of CRR Offers at De-energized Settlement Points |
|---|---|
| Next Group | |
| Next Step | |
| Status | Approved on 04/19/2011 |
| Effective Dates |
06/23/2011
All sections except for Section 4.4.5 07/26/2011
Section 4.4.5 |
Action
| Date | Gov Body | Action Taken | Next steps |
|---|---|---|---|
| 04/19/2011 | BOARD | Approved | |
| 04/07/2011 | TAC | Recommended for Approval | ERCOT Board consideration of NPRR339 |
| 03/24/2011 | PRS | Recommended for Approval | TAC consdieration of NPRR339 |
Voting Record
| Date | Gov Body | Motion | Result |
|---|---|---|---|
| 04/19/2011 | BOARD | To approve NPRR339 as recommended by TAC in the 4/7/11 TAC Report. | Passed |
| 04/07/2011 | TAC | To recommend approval of NPRR339 as recommended by PRS in the 3/24/11 PRS Report. | Passed |
| 03/24/2011 | PRS | To recommend approval of NPRR339 as submitted, to recommend a priority of Critical and a rank of 9.3, and to forward NPRR339 to TAC. | Passed |
Background
| Status: | Approved |
|---|---|
| Date Posted: | Mar 17, 2011 |
| Sponsor: | ERCOT |
| Urgent: | Yes |
| Sections: | 4.4.5, 4.5.1, 6.6.1 |
| Description: | 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. |
| 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. |
Key Documents
Mar 18, 2011 - doc - 97.5 KB
Mar 18, 2011 - doc - 58.5 KB
Mar 23, 2011 - xls - 46.5 KB
Mar 28, 2011 - doc - 96 KB
Apr 4, 2011 - doc - 38 KB
Apr 4, 2011 - xls - 185 KB
Apr 7, 2011 - doc - 59 KB
Apr 7, 2011 - doc - 98.5 KB
Apr 20, 2011 - doc - 99.5 KB