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PRR773

Summary

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

Action

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

Voting Record

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

Background

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.

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