NOTICE DATE: June 5, 2009

NOTICE TYPE: M-A060409-02 Operations

SHORT DESCRIPTION: Clarification on Updated West to North stability limits

INTENDED AUDIENCE: ERCOT Market Participants

DAY AFFECTED: June 12, 2009

LONG DESCRIPTION: ERCOT has updated the West to North Stability Limits and will be posting this information at http://www.ercot.com/gridinfo/congestion/ on June 11, 2009. These new limits will be used by ERCOT System Operations starting June 12, 2009.

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].

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