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NPRR210

Summary

Title: Wind Forecasting Change to P50, Synchronization with PRR841
Next Group:
Next Step:
Status: Approved on 06/15/2010
Effective Dates:
12/01/2010

or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (07/01/10 Nodal Protocols Library)

Action

Date Gov Body Action Taken Next Steps
06/03/2010 TAC Recommended for Approval ERCOT Board consideration of NPRR210
05/20/2010 PRS Recommended for Approval TAC consideration of NPRR210
03/25/2010 PRS Recommended for Approval TAC consideration of NPRR210
04/22/2010 PRS Deferred/Tabled PRS consideration
04/08/2010 TAC Remanded PRS consideration of NPRR210
02/18/2010 PRS Recommended for Approval PRS Impact Analysis review
06/15/2010 BOARD Approved

Voting Record

Date Gov Body Motion Result
06/03/2010 TAC To recommend approval of NPRR210 as recommended by PRS in the 5/20/10 PRS Report and to assign a priority of High to the proposed grey boxed language. Passed
05/20/2010 PRS To recommend approval of NPRR210 as recommended by PRS in the 3/25/10 PRS Report and as revised by PRS and to assign a priority of High to the proposed grey boxed language. Passed
03/25/2010 PRS To endorse and forward the 2/18/10 PRS Report for NPRR210 as revised by PRS to TAC. Passed
04/22/2010 PRS To table NPRR210 Passed
04/08/2010 TAC To remand NPRR210 to PRS. Passed
02/18/2010 PRS To recommend approval of NPRR210 as amended by the 2/11/10 Luminant comments and as revised by PRS. Passed
06/15/2010 BOARD To approve NPRR210 as recommended by TAC in the 6/3/10 TAC Report. Passed

Vote tallies here reflect individual votes, not the weight of the votes by market segment. Affirmative votes are not recorded in these vote tallies. For additional details on the voting record, please consult the Recommendation or Action Report, or the official vote tally if available, as posted in the key documents.

Background

Status: Approved
Date Posted: Feb 9, 2010
Sponsor: Morgan Stanley
Urgent: No
Sections: 2.1, 3.9.1, 4.2.2, 5.7.4
Description: This Nodal Protocol Revision Request (NPRR) changes the wind forecasting methodology to use a 50% probability of exceedance calculation instead of an 80% for Reliability Unit Commitment (RUC) considerations. This NPRR would align the Nodal Protocols with changes made to the zonal Protocols pursuant to Protocol Revision Request (PRR) 841, Revise Total ERCOT Wind Power Forecast (TEWPF), which was approved by the ERCOT Board on 3/23/10.
Reason: The P80 forecast provides an unrealistically low prediction of wind output resulting in overcommitment of RUC Resources. Implementation of this NPRR should allow ERCOT to commit fewer RUC Resources and still maintain reliability.

Key Documents

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