NOTICE DATE:  January 11, 2011

NOTICE TYPE:  W-A011111-01 Release – Wholesale

SHORT DESCRIPTION:  Implementation of defect repairs

INTENDED AUDIENCE:  ERCOT Market Participants

DAYS AFFECTED:  January 19 – 23, 2011

LONG DESCRIPTION:  ERCOT will be migrating corrections to a number of market-facing defects. These patches will be implemented in the production environment between January 19 and January 23, 2011. Please see the attached spreadsheet for the description and estimate of the release date for each defect.

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 email at [log in to unmask].

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dh