Issues

PRR764

Summary
Action
Voting Record
Background
Key Documents

Summary

Title	Zonal Congestion and CSCs/CREs
Next Group
Next Step
Status	Approved on 06/06/2008

Action

Date	Gov Body	Action Taken	Next Steps
06/06/2008	BOARD	Approved
06/05/2008	TAC	Recommended for Approval	Board of Directors review of PRR764
06/03/2008	PRS	Recommended for Approval

Date

Gov Body

Action Taken

Next Steps

06/06/2008

BOARD

Approved

06/05/2008

TAC

Recommended for Approval

Board of Directors review of PRR764

06/03/2008

PRS

Recommended for Approval

Voting Record

Date	Gov Body	Motion	Result
06/06/2008	BOARD	Approved PRR764 as recommended by TAC and requested ERCOT Staff to make best efforts to implement PRR764 by 8:00AM CDT, June 9, 2008.	Passed
06/05/2008	TAC	Recommend approval of PRR764 as amended by LCRA comments and as revised by TAC; deem as the approved list of contingencies for managing CSC and CRE related congestion is the current approved CSC/CRE list; and direct WMS through the congestion management working group (CMWG) to begin work on a process to determine CREs and the approved list of contingencies for managing CSC and CRE related congestion.	Passed
06/03/2008	PRS	To recommend approval of PRR764 as amended by ERCOT and Luminant comments and as revised by PRS with a recommendation to TAC to initiate a study/review of existing CREs.	Passed

Date

Gov Body

Motion

Result

06/06/2008

BOARD

Approved PRR764 as recommended by TAC and requested ERCOT Staff to make best efforts to implement PRR764 by 8:00AM CDT, June 9, 2008.

Passed

06/05/2008

TAC

Recommend approval of PRR764 as amended by LCRA comments and as revised by TAC; deem as the approved list of contingencies for managing CSC and CRE related congestion is the current approved CSC/CRE list; and direct WMS through the congestion management working group (CMWG) to begin work on a process to determine CREs and the approved list of contingencies for managing CSC and CRE related congestion.

Passed

06/03/2008

PRS

To recommend approval of PRR764 as amended by ERCOT and Luminant comments and as revised by PRS with a recommendation to TAC to initiate a study/review of existing CREs.

Passed

Background

Status:	Approved
Date Posted:	May 29, 2008
Sponsor:	Potomac Economics
Urgent:	Yes
Sections:	7.3.2, 7.5.2
Description:	This Protocol Revision Request (PRR) provides that zonal constraints are only those constraints for which a Commercially Significant Constraint (CSC) or Closely Related Elements (CRE) is the base case or post-contingency limiting element.
Reason:	Recent experience has revealed that the attempt to use zonal Balancing Energy to manage zonal constraints for which the post-contingency limiting element is neither a CSC nor a CRE has been very ineffective and inefficient.