PRR764

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

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

Date	Gov Body	Motion	Result	Abstentions
06/06/2008	Board of Directors	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	1 IPM
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	5 MOU, Consumer, IPM, Generator(2)
	PRS	To grant Urgent status.	Passed

Status:	Approved
Date Posted:	05/29/2008
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.