NOTICE DATE:  July 22, 2011

NOTICE TYPE:  W-A072211-01 Extracts – Wholesale

SHORT DESCRIPTION:  Removal of two columns from the State Estimator Bus Voltages Report

INTENDED AUDIENCE:  ERCOT Market Participants

DAY AFFECTED:  July 26, 2011

LONG DESCRIPTION:  On July 26, 2011, the State Estimator Bus Voltages Report (NP6-627-CD) will have two columns removed to help mitigate the risk of identifying Resource status.

The following two columns are being removed:

·         EBS_NUMBER

·         NODE_ID.

Once removed, the report will post with the following column order:

·         SE_EXECUTION_TIME

·         STATION_NAME

·         KV_LEVEL

·         EMS_BUS_NUMBER

·         VOLTAGE_ESTIMATE.

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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dh