NOTICE DATE:  June 19, 2008

NOTICE TYPE:  M-B061908-01   Operations

CLASSIFICATION: Public

SHORT DESCRIPTION:  All Congestion, including Zonal Congestion, will be managed by Local Congestion management techniques during the System-wide 2-Hour LFC Test

INTENDED AUDIENCE:  All Market Participants

DAY AFFECTED:  June 25, 26 and 27, 2008

LONG DESCRIPTION:  Local Congestion management techniques will be used to manage all Congestion, including Zonal Congestion, on the day of the System-wide 2-Hour LFC Test.   ERCOT will alter the handling of system constraints in Zonal beginning two hours before the start of the System-wide 2-Hour LFC Test continuing until one hour beyond the end of the test, For example, if the 2 Hour test were to run from 9:00 AM to 11:00 AM, Local Congestion management techniques would be used beginning at 7:00 AM through 12:00 PM. 

ACTION REQUIRED:  Please advise operators and other personnel performing Zonal market activities of the change.  A notice will be sent each day (June 25, 26 and 27) to inform the market if a test will or will not take place that day.  The notice will be sent 3 hours prior to the start of the test.

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 e-mail at [log in to unmask].

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