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

Approved Urgent sponsor ERCOT posted 2011-03-17 ercot.com

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.

Timeline

Mar 17 '11
PRSFiled by ERCOT
Mar 24 '11
PRS PRS Meeting
PRSRecommended for Approval Recommended for approval Priority Forwarded → TAC
“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

→ TAC consdieration of NPRR339
- 339NPRR-01 Modifications to Heuristic Rules to Determine LMP at Mar 18 '11 · Revision Request
- 339NPRR-02 Preliminary Impact Analysis 031811 Mar 18 '11 · Staff Report
- 339NPRR-03 Urgency Vote Ballot 032311 Mar 23 '11 · Revision Request Ballot
Apr 1 '11
PRS Special PRS Meeting
- 339NPRR-04 PRS Report 032411 Mar 28 '11 · Committee Report
Apr 7 '11
TAC TAC Meeting
TACRecommended for Approval Recommended for approval
“To recommend approval of NPRR339 as recommended by PRS in the 3/24/11 PRS Report.” — Passed

→ ERCOT Board consideration of NPRR339
- 339NPRR-05 PRS Comments 040411 Apr 4 '11 · Revision Request Comments
- 339NPRR-06 Cost Benefit Analysis 040411 Apr 4 '11 · Staff Report
- 339NPRR-07 Impact Analysis 040711 Apr 7 '11 · Staff Report
- 339NPRR-08 TAC Report 040711 Apr 7 '11 · Committee Report
Apr 19 '11
BOARD Board of Directors Meeting
BOARDApproved Recommended for approval
“To approve NPRR339 as recommended by TAC in the 4/7/11 TAC Report.” — Passed
—
Posted since the last meeting
- 339NPRR-09 Board Report 041911 Apr 20 '11 · Committee Report