NOTICE DATE:  August 20, 2008
NOTICE TYPE:  R-D082008-01 - Informational:  Retail Processing 
CLASSIFICATION: Public
SHORT DESCRIPTION:  AEP will submit 658,844 814_20 Maintain
transactions. This will create a high number of 814_20s being sent from
ERCOT to the affected CRs.
INTENDED AUDIENCE:  AEP and CRs
DAY AFFECTED:  Beginning August 26, 2008
LONG DESCRIPTION:  Beginning Tuesday, August 26, 2008, AEP will begin
sending 814_20 transactions to update the Station ID Assignments at
ERCOT. The total number of transactions to be sent is 658,844. These
814_20s will be sent on the date and in the quantity identified in the
attached file (Schedule for Sending 814_20 Messages.doc). 
ERCOT has asked that the 814_20s be sent after 5:00 PM Central Standard
Time, and that Saturday submissions be excluded. Therefore, CRs should
expect to receive transactions late in the day Tuesdays through Fridays
only. 
ADDITIONAL DETAILS:  Additional black out dates are as follows:

Date	Day of Week	Reason for Blackout	
18-Sep	Thurs	Annual Validation	
19-Sep	Fri	Annual Validation	
23-Sep	Tues	Annual Validation	
24-Sep	Wed	Annual Validation	
25-Sep	Thur	Annual Validation	
26-Sep	Fri	Annual Validation	

     
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
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  <<Schedule for Sending 814_20 Messages.doc>> 
JR/JA