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SCR754

Summary

Title Replace Email Delivery of WGRPP Forecasts (formerly "WGRPP Forecasts Posted on Zonal TML")
Next Group
Next Step
Status Approved on 04/22/2009

Action

Date Gov Body Action Taken Next Steps
04/22/2009 BOARD Approved
04/09/2009 TAC Recommended for Approval ERCOT Board consideration of SCR754
03/19/2009 PRS Recommended for Approval TAC consideration of SCR754
03/18/2009 WMS Recommended for Approval PRS consideration of SCR754
01/28/2009 WMS Recommended for Approval WMS Impact Analysis review

Voting Record

Date Gov Body Motion Result
04/22/2009 BOARD To approve SCR754 as recommended by TAC. Passed
04/09/2009 TAC To recommend approval of SCR754 with a priority of 2-High and rank of 39.2 as recommended by WMS and PRS. Passed
03/19/2009 PRS To assign a priority of 2-High and rank of 39.2 for SCR754. Passed
03/18/2009 WMS To grant SCR754 Urgent status, recommend approval of SCR754 as amended by the 2/16/09 ERCOT comments, and endorse and forward the Impact Analysis and CBA with a recommended project priority of 2-High and ranking of 39.2. All Market Segments were present for the vote. Passed
01/28/2009 WMS To recommend approval of SCR754 as submitted. Passed

Background

Status: Approved
Date Posted: Dec 23, 2008
Sponsor: ERCOT
Urgent: Yes
Sections: N/A
Description: In accordance with Protocol Section 4.4.15, QSE Resource Plans, ERCOT shall produce renewable production potential forecasts for Wind-powered Generation Resources (WGRs) to be used as the planned operating level in the Resource Plan during Replacement Reserve Service (RPRS) procurements. Upon approval of PRR763, Use of WGRPP as Planned Operating Level in Day-Ahead Resource Plan for WGRs, ERCOT implemented the WGR Production Potential (WGRPP) forecast without delay by having the WGRPP forecasting service email forecasts directly to each WGR Qualified Scheduling Entity (QSE). The email process proved to cause unacceptable delivery delays and errors for QSEs. This System Change Request (SCR) proposes to provide a secure and programmatic means to supply the WGR QSEs with their forecasts by: o Provide WGR QSEs their forecasts through the zonal Extensible Markup Language (XML) Market User Interface (MUI). o A WGR QSE can obtain its current forecasts by submitting a query through the zonal XML MUI. o This will be through a query as specified in the "ERCOT Participant Interface: XML" document. o Past forecasts will not be available after each hour. o ERCOT may restrict the frequency of these queries to protect system availability.
Reason: The current email solution is unreliable and cumbersome. The email process proved to cause unacceptable delivery delays and errors for QSEs.

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