NOTICE DATE: April 3, 2012

NOTICE TYPE: M-A032712-02 Extracts

SHORT DESCRIPTION: Supplemental PRDE information posted

INTENDED AUDIENCE: ERCOT Market Participants

DAY AFFECTED: April 3, 2012

LONG DESCRIPTION: ERCOT has updated and posted supplemental information for the April 27, 2012, run of the Public Reference Data Extract (PRDE). Beginning with the April 27 posting, PRDE will include two new tables for GENERATORSITEHIST and GENERATORHIST. The documents listed below have been updated to account for the addition of these tables.

· Public Reference Data Extract User Guide

· Settlements Join Diagram

· DDL and XSD for the PRDE

ADDITIONAL INFORMATION: The updated documents are located in the Market Data Transparency area of ERCOT.com.

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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