NOTICE DATE: April 4, 2011

NOTICE TYPE: W-B040411-01 Extracts – Wholesale

SHORT DESCRIPTION: Peaker Net Margin Report updated due to price corrections

INTENDED AUDIENCE: ERCOT Market Participants

DAY AFFECTED: April 1, 2011

LONG DESCRIPTION: Due to price corrections on February 8, 2011, and March 25, 2011, the Peaker Net Margin Report (NP4-790-CD) files posted between February 9, 2011, and March 31, 2011, contain incorrect cumulative values.

The April 1, 2011, file has been updated with the correct cumulative value based on the prior price corrections.

ERCOT has implemented a process to update the cumulative Peaker Net Margin values for future price corrections.

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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