PRR850

Title:	Weather Responsiveness Determination for Interval Data Recorders
Next Group:
Next Step:
Status:	Approved on 09/21/2010

Date	Gov Body		Next Steps
09/21/2010	Board of Directors	Approved
09/02/2010	TAC	Recommended for Approval	BOD consideration
08/19/2010	PRS	Recommended for Approval	TAC consideration
08/13/2010	PRS		PRS consideration of PRR850

Date	Gov Body	Motion	Result
09/21/2010	Board of Directors	Approve prr850 as recommended by tac in the 9/2/10 tac report and as amended by the 9/14/10 ercot comments.	Passed
09/02/2010	TAC	To recommend approval of PRR850 as recommended by PRS in the 8/19/10 PRS Report	Passed
08/19/2010	PRS	To endorse and forward PRR850 and the Impact Analysis to TAC	Passed
08/13/2010	PRS	To grant PRR850 Urgent status.	Passed

Status:	Approved
Date Posted:	08/11/2010
Sponsor:	COPS
Urgent:	Yes
Sections:	11.4.3, 11.4.3.1
Description:	This Protocol Revision Request (PRR) limits the applicability of the weather responsiveness test to Interval Data Recorder (IDR) Meters.
Reason:	Current Protocols require ERCOT to perform a weather responsiveness test on Electric Service Identifiers (ESI IDs) with IDRs and does not differentiate between Advanced Meters and IDR Meters. Performing this test on Advanced Meters has a significant impact on ERCOT System processing times. ERCOT estimates that it would take approximately eight days of system processing time to perform this check on ESI IDs with an Advanced Meter. On Operating Day 6/01/2010, data was being processed for more than 900,000 Advanced Meters. Test runs have shown the data loading portion of this job to be ¾ of a second per ESI ID. · 900,000 ESI IDs * .75 seconds per ESI ID = 675,000 seconds · 24 hours/day * 60 min/hour * 60 sec/min = 86,400 sec/day · 675,000 sec / 86,400 sec/day = 7.8125 days This job running for nearly eight days would impact many core deliverables, including: · Timely completion of core wholesale aggregation and financial Settlements. · Timely loading of Advanced Meter System (AMS) interval data from the market.