Issues

NPRR210

Summary
Action
Voting Record
Background
Key Documents

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

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

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

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.