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M-B071708-03 FINAL Off-Cycle Release - Retail - 8:00 AM Saturday, August 16, 2008 through 12:00 AM Monday, August 18, 2008

NOTICE DATE: August 15, 2008

NOTICE TYPE: M-B071708-03 FINAL Release - Retail

CLASSIFICATION: Public

SHORT DESCRIPTION: ERCOT has an off-cycle Retail Release scheduled for 8:00 AM Saturday, August 16, 2008 through 12:00 AM Monday, August 18, 2008.

INTENDED AUDIENCE: All Market Participants

DAY AFFECTED: 8:00 AM Saturday, August 16, 2008 through 12:00 AM Monday, August 18, 2008.

MarkeTrak will be unavailable beginning 7:00 PM Friday, August 15, 2008. Please do not submit or update issues after 5:00 PM Friday, August 15, 2008.

LONG DESCRIPTION: ERCOT has an off-cycle Retail Release scheduled from 8:00 AM Saturday August 16, 2008 through 12:00 AM Monday, August 18, 2008. For reference, Market impacting SIRs, internal ERCOT SIRs with no Market impact and MarkeTrak Release 2 requirements are included in the attached documents. ERCOT will also use the normal MarkeTrak maintenance window beginning 7:00 PM Friday, August 15, 2008 through 12:00 AM Monday, August 18, 2008. During this time, ERCOT will perform the PR70007_01 MarkeTrak Release 2 migration to production. MarkeTrak Service Level Agreement timeframe is 7:00 AM to 7:00 PM during retail business days. The MarkeTrak Taskforce is recommending that all Market Participants submit all issues prior to 5:00 PM Friday, August 15, 2008. Please do not submit or update issues after 5:00 PM Friday, August 15, 2008.

The Detailed Business Requirements Document for MarkeTrak Phase II is located at http://www.ercot.com/content/services/projects/current/70007_01/rdd/Detailed_Business_Requirements_-_PR_70007_11_16_07_final.doc

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 both 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.

<<MT_Release_2_Requirements.xls>> <<SIRs for Aug 16 Release Notices.xls>>

_____________________________________________
From: ERCOT Client Relations
Sent: Wednesday, August 06, 2008 10:44 AM
To: [log in to unmask]; [log in to unmask]; [log in to unmask]; [log in to unmask]; [log in to unmask]
Cc: [log in to unmask]; [log in to unmask]; [log in to unmask]; 1 ERCOT Client Service Reps
Subject: M-B071708-02 Off-Cycle Release - Retail - 8:00 AM Saturday, August 16, 2008 through 12:00 AM Monday, August 18, 2008

NOTICE DATE: August 6, 2008

NOTICE TYPE: M-B071708-02 Release – Retail

CLASSIFICATION: Public

SHORT DESCRIPTION: ERCOT has an off-cycle Retail Release scheduled for 8:00 AM Saturday, August 16, 2008 through 12:00 AM Monday, August 18, 2008.

INTENDED AUDIENCE: All Market Participants

DAY AFFECTED: 8:00 AM Saturday, August 16, 2008 through 12:00 AM Monday, August 18, 2008. MarkeTrak will be unavailable beginning 7:00 PM Friday, August 15, 2008.

ERCOT will also use the normal MarkeTrak maintenance window beginning 7:00 PM Friday, August 15, 2008 through 12:00 AM Monday, August 18, 2008. During this time, ERCOT will perform the PR70007_01 MarkeTrak Release 2 migration to production. MarkeTrak Service Level Agreement timeframe is 7:00 AM to 7:00 PM during retail business days.

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.

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

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.

<< File: SIRs for Aug 16 Release Notices2.xls >> << File: MT_Release_2_Requirements.xls >>

DH/JA

_____________________________________________
From: ERCOT Client Relations
Sent: Thursday, July 17, 2008 5:08 PM
To: [log in to unmask]; [log in to unmask]; [log in to unmask]; [log in to unmask]; [log in to unmask]
Cc: [log in to unmask]; [log in to unmask]; [log in to unmask]; 1 ERCOT Client Service Reps
Subject: M-B071708-01 Off-Cycle Release - Retail - 8:00 AM Saturday, August 16, 2008 through 12:00 AM Monday, August 18, 2008

NOTICE DATE: July 17, 2008

NOTICE TYPE: M-B071708-01 Release - Retail

CLASSIFICATION: Public

SHORT DESCRIPTION: ERCOT has an off-cycle Retail Release planned for 8:00 AM Saturday, August 16, 2008 through 12:00 AM Monday, August 18, 2008.

INTENDED AUDIENCE: All Market Participants

DAY AFFECTED: 8:00 AM Saturday, August 16, 2008 through 12:00 AM Monday, August 18, 2008. MarkeTrak will be unavailable beginning 7:00 PM Friday, August 15, 2008.

ERCOT will also use the normal MarkeTrak maintenance window beginning 7:00 PM Friday, August 15, 2008 through 12:00 AM Monday, August 18, 2008. During this time, ERCOT will perform the PR70007_01 MarkeTrak Release 2 migration to production. MarkeTrak service availability is 7:00 AM to 7:00 PM during retail business days.

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.

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

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/DH/JA