NOTICE DATE:  September 22, 2010
NOTICE TYPE:  M-A092210-01 INITIAL: Maintenance Outage - Retail/Wholesale
SHORT DESCRIPTION:  Scheduled Maintenance Outage
INTENDED AUDIENCE:  All Market Participants
DAY AFFECTED:  Sunday, October 3, 2010 from 06:00 through 21:00
LONG DESCRIPTION:  ERCOT has scheduled a maintenance outage for Sunday, October 3, 2010 from 06:00 through 21:00.
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<http://www.ercot.com>
o       MarkeTrak - https://marketrak.ercot.com:8443/tmtrack.dll
o       TCR - https://tcr.ercot.com<https://tcr.ercot.com/>
o       Texas Renewables - www.texasrenewables.com<http://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]<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/>.
DH/DP