NOTICE DATE: March 27, 2012

NOTICE TYPE: M-A032712-01 Extracts

SHORT DESCRIPTION: Public Reference Data Extract table additions

INTENDED AUDIENCE: ERCOT Market Participants

DAY AFFECTED: April 27, 2012

LONG DESCRIPTION: ERCOT will add the GENERATORSITEHIST and GENERATORHIST tables to the Public Reference Data Extract (PRDE) during the scheduled ERCOT April release on April 26, 2012, with a first run date of April 27, 2012. These new tables will give complete generator information for mapping prices back to the generator.

ADDITIONAL INFORMATION: The Public Reference Data Extract User Guide and the Settlements Join Diagram will be updated and reposted in the Market Data Transparency area of ERCOT.com on April 27, 2012.

The DDL and XSD for the PRDE will also be updated and reposted in the Market Data Transparency area of ERCOT.com on April 27, 2012.

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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