NOTICE DATE: July 14, 2008

NOTICE TYPE: W-A062408 – 06 PRR/SCR

CLASSIFICATION: Public

SHORT DESCRIPTION: Aggregate Wind Power Forecast report is now available.

INTENDED AUDIENCE: Wind QSE Operations Personnel

DAY AFFECTED: July 14, 2008

LONG DESCRIPTION: The Aggregate Wind Power Forecast is now available on the ERCOT website (http://www.ercot.com/gridinfo/generation/). This is in association with the July 1, 2008 implementation of PRR 763 (Use of WGRPP as Planned Operating Level in Day-Ahead Resource Plan for WGRs). The report contains rolling 48 hour wind forecast data and is updated hourly.

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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