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/> . yl