NOTICE DATE:  December 4, 2012

NOTICE TYPE:  W-A120412-01  Financial/Credit

SHORT DESCRIPTION:  Total Potential Exposure (TPE) calculations affected by ERCOT system outages

INTENDED AUDIENCE:  ERCOT Counter-Parties

DAY AFFECTED:  December 3, 2012

LONG DESCRIPTION:  The ERCOT system outages commencing on December 3, 2012 have impaired the ability to calculate Counter-Party Total Potential Exposure (TPE) and Available Credit Limit (ACL).  Counter-Parties should be aware of the following impacts on TPE calculations:

*         Unbilled Day-Ahead Market (DAM)  amount for Operating Day December 4, 2012 not included in TPE calculations, and

*         Future Credit Exposure (FCE) calculations utilize the Auction Clearing Price (ACP) instead of specific DAM Settlement Point Prices.

Upon request, ERCOT Credit staff will email the ACL Summary Report to Authorized Representatives and Credit Contacts.  Please send requests to ERCOT Credit at [log in to unmask]<mailto:[log in to unmask]>.

ERCOT will send a follow-up Market Notice when credit calculation inputs are restored.

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

If you are receiving email 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.















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