NOTICE DATE:  February 21, 2011

NOTICE TYPE:  W-A022111-01 Extracts/Reports – Wholesale

SHORT DESCRIPTION: Change to posting frequency for Hourly State Estimator Transmission Line Flows 

INTENDED AUDIENCE:  ERCOT Market Participants

DAY AFFECTED:  February 23, 2011

LONG DESCRIPTION:  The posting frequency for NP6-619-CD Hourly State Estimator Transmission Line Flows will change beginning February 23, 2011.

Current Frequency: Hourly

Updated Frequency: 5 Minutes

The State Estimator Reports are located on the ERCOT Market Information System (MIS) under Real-Time Operations.

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