NOTICE DATE: April 11, 2011

NOTICE TYPE: W-D041111-01 Extracts – Wholesale

SHORT DESCRIPTION: New bill determinant to support calculation of Four Coincident Peak (4CP)

INTENDED AUDIENCE: ERCOT Market Participants

DAY AFFECTED: April 8, 2011

LONG DESCRIPTION: ERCOT is implementing a new bill determinant for calculation of 4CP which will represent TDSP load for ERCOT, excluding DC Ties and Block Load Transfers (BLTs). These changes were implemented April 8, 2011, and will affect all Nodal Operating Days settled.

· LTDSP_4CP will reside in the DAIOutputHeader/Interval table provided in the Real-Time Market Market Operating Day Extract.

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].

If you are receiving email from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.