NOTICE DATE:  February 12, 2010

NOTICE TYPE:  R-A021210-01 Extracts - Retail

SHORT DESCRIPTION:  The ESI ID Service History and Usage Extract that was posted on November 16, 2009 included 154 IDR Required interval data records that spanned DST trade date November 1, 2009 that were incorrect.

INTENDED AUDIENCE:  CRs and TDSPs

DAY AFFECTED:  November 16, 2009
LONG DESCRIPTION:  The ESI ID Service History and Usage Extract that was posted on November 16, 2009 included 154 IDR Required interval data records that spanned DST trade date November 1, 2009 that were incorrect. This impacted 15 Market Participants that are opted in to receive the Supplemental IDR Required Interval Data Extract.
As the IDR Required interval data is now included in the Supplemental IDR Required Interval Data Extract, ERCOT posted another Supplemental IDR Required Interval Data Extract today, February 12, 2010, with the corrected data for the 15 Market Participants that had received incorrect data in November.
The Supplemental IDR Required Interval Data Extracts with the corrected data were posted at 2:21 PM today.
ADDITIONAL INFORMATION: The details for this extract can be found on the ERCOT website (http://www.ercot.com/services/mdt/userguides/) in the Supplemental IDR Required Interval Data Extract User Guide.
CONTACT:  If you have any questions, please contact your ERCOT Account Manager.  You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via e-mail at [log in to unmask]<mailto:[log in to unmask]>.

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JR/DH