NOTICE DATE:  August 1, 2008

NOTICE TYPE:  W-A080108-01 Operations

CLASSIFICATION: Public

SHORT DESCRIPTION: Modifications to the posting of Real-Time CSC/CRE
data

INTENDED AUDIENCE:  QSE Operations Personnel

DAY AFFECTED:  July 31, 2008

LONG DESCRIPTION:  ERCOT has modified the posting of the Real-Time
Commercially Significant Constraint (CSC) data to include the limiting
Contingency and Overloading Element data.
(http://mospublic.ercot.com/ercot/jsp/csc_cre.jsp).  

ADDITIONAL INFORMATION:  On May 28, 2008, the CSC Limit Calculator was
automated to allow ERCOT to update the limits on each CSC in a more
timely manner and to maximize the flow across zones.  Although the
resulting limits are posted in response to the adoption of PRR764,
Market Participants have expressed a desire to see the contingency and
overloaded element used to determine each CSC limit. 

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] <mailto:[log in to unmask]> .

If you are receiving e-mail from an ERCOT distribution list that you no
longer wish to receive, please follow this link in order to unsubscribe
from this list: http://lists.ercot.com <http://lists.ercot.com/> .

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