NOTICE DATE:  July 10, 2008

NOTICE TYPE:  M-B071008-01 Outage - Retail/Wholesale

CLASSIFICATION:  Public

SHORT DESCRIPTION:  Scheduled Maintenance Outage            

INTENDED AUDIENCE:  All Market Participants

DAY AFFECTED:  Sunday, July 20, 2008 from 8:00 AM through 8:00 PM

LONG DESCRIPTION:  ERCOT has scheduled a maintenance outage for Sunday, July 20, 2008 from 8:00 AM through 8:00 PM.


ADDITIONAL INFORMATION:
  During the outage the following functions will be affected:

·       Market Participants utilizing NAESB to send/receive transactions to/from ERCOT will NOT be able to send/receive transactions to/from ERCOT during the outage.  This includes all retail transactions.

·       867 transactions will NOT be forwarded during the outage.

·       997 Functional Acknowledgements will NOT be sent during the outage.

·       Components of the TML and Commercial API will NOT be available including:

o       Find ESI ID

o       Find Transaction

o       Submit Transactions

o       USA Functionalities

o       Report Explorer, including

§       Reports

§       Extracts

§       Invoices

§       Settlement Statements

o       Extract Scheduler

o       Web Services Data Requests

·       ERCOT Internet Services will NOT be available, including but not limited to:

o       ERCOT.com – www.ercot.com

o       MarkeTrak - https://marketrak.ercot.com:8443/tmtrack.dll?

o       TCR - https://tcr.ercot.com

o       Texas Renewables – www.texasrenewables.com

MOS, Scheduling API, MOSTML, MOSPUBLIC, and Outage Scheduler will not be affected as there will be a DNS failover from Taylor to Austin.

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].

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.

JR/JA