NOTICE DATE:  November 26, 2008

NOTICE TYPE:  M-A112608-01 Initial - Maintenance Outage -
Retail/Wholesale

SHORT DESCRIPTION:  Scheduled Maintenance Outage            

INTENDED AUDIENCE:  All Market Participants

DAY AFFECTED:  Sunday, December 7, 2008 from 8:00 AM through 8:00 PM

LONG DESCRIPTION:  ERCOT has scheduled a maintenance outage for Sunday,
December 7, 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:

	*	Find ESI ID 
	*	Find Transaction 
	*	Submit Transactions 
	*	USA Functionalities 
	*	Report Explorer, including 

		*	Reports 
		*	Extracts 
		*	Invoices 
		*	Settlement Statements 

	*	Extract Scheduler 
	*	Web Services Data Requests 

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

	*	ERCOT.com - www.ercot.com <http://www.ercot.com/>  
	*	MarkeTrak - https://marketrak.ercot.com:8443/tmtrack.dll
<https://marketrak.ercot.com:8443/tmtrack.dll> ?
	*	TCR - https://tcr.ercot.com <https://tcr.ercot.com/>  
	*	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]

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/> .

 JR/DH/DP/JA