Issues

PRR773

Title	Setting the LSL Requirement for WGRs
Next Group
Next Step
Status	Approved on 12/08/2008

Date	Gov Body	Action Taken	Next steps
12/08/2008	COPS	Approved
11/06/2008	TAC	Recommended for Approval	Board consideration
10/23/2008	PRS	Recommended for Approval	TAC Consideration
09/24/2008	PRS	Recommended for Approval

Date

Gov Body

Action Taken

Next steps

12/08/2008

COPS

Approved

11/06/2008

TAC

Recommended for Approval

Board consideration

10/23/2008

PRS

Recommended for Approval

TAC Consideration

09/24/2008

PRS

Recommended for Approval

Date	Gov Body	Motion	Result
12/08/2008	COPS	Approved PRR773 as recommended by TAC.	Passed
11/06/2008	TAC	To recommend approval of PRR773 as recommended by PRS.	Passed
10/23/2008	PRS	To endorse and forward the PRS Recommendation Report and Impact Analysis for PRR773 to TAC.	Passed
09/24/2008	PRS	To recommend approval of PRR773 as submitted.	Passed

Date

Gov Body

Motion

Result

12/08/2008

Approved PRR773 as recommended by TAC.

Passed

11/06/2008

To recommend approval of PRR773 as recommended by PRS.

Passed

10/23/2008

To endorse and forward the PRS Recommendation Report and Impact Analysis for PRR773 to TAC.

Passed

09/24/2008

To recommend approval of PRR773 as submitted.

Passed

Status:	Approved
Date Posted:	Jul 28, 2008
Sponsor:	QSE Managers Working Group
Urgent:	No
Sections:	4.10.4, Resource Low Sustainable Limit as a Percent of High Sustainable Limit Measure
Description:	This Protocol Revision Request (PRR) requires that a Wind-powered Generation Resource (WGR) Low Sustainable Limit (LSL) to be set at 10% of the name plate rating of the WGR.
Reason:	This PRR is the result of a task assigned by Wholesale Market Subcommittee (WMS) to the Qualified Scheduling Entity (QSE) Manager Working Group (QMWG) on April 16, 2008. Presently WGRs may set their LSL equal to their High Sustainable Limit (HSL). This creates control problems for ERCOT because it limits ERCOT’s ability to down balance these resources via zonal balancing instructions. To reduce generation in the West Zone, ERCOT has to give these resources an Out of Merit Energy (OOME) down instruction. This PRR will require that the wind-only QSEs submit the minimum mandatory Balancing Energy service down bid in accordance with section 4.10.7, Down Bid & Obligation Measure.