The ERCOT planned maintenance outage completed at approximately 16:13 this afternoon, Sunday, November 11, 2012.  All systems and transaction processing were reinstated at that time.

As always, connectivity issues such as NAESB or MIS can be reported to the ERCOT Help Desk at 512-248-6800 or [log in to unmask] or tomorrow to your ERCOT Account Manager.

DH

402493

From: ERCOT Client Services
Sent: Friday, November 09, 2012 11:14 AM
To: [log in to unmask]; [log in to unmask]; [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-C110112-02 REMINDER: Maintenance Outage – Retail/Wholesale - Sunday, November 11, 2012 from 06:00 through 21:00

NOTICE DATE:  November 9, 2012

NOTICE TYPE:  M-C110112-02 REMINDER: Maintenance Outage – Retail/Wholesale

SHORT DESCRIPTION:  Scheduled Maintenance Outage

INTENDED AUDIENCE:  All Market Participants

DAY AFFECTED:  Sunday, November 11, 2012 from 06:00 through 21:00

LONG DESCRIPTION:  ERCOT has scheduled a maintenance outage for Sunday, November 11, 2012 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.
• MarkeTrak will be unavailable for the duration of the outage.

• Retail Application components of the MIS and the Retail API will NOT be available

• Retail Reports and Extracts may be impacted during the outage timeframe
• eService application will be unavailable on the Market Information System (MIS)

• MPIM will be unavailable for the duration of the outage.

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.

DH/JR

402493

From: ERCOT Client Services
Sent: Thursday, November 01, 2012 4:20 PM
To: [log in to unmask]; [log in to unmask]; [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-C110112-01 INITIAL: Maintenance Outage – Retail/Wholesale - Sunday, November 11, 2012 from 06:00 through 21:00

NOTICE DATE:  November 1, 2012

NOTICE TYPE:  M-C110112-01 INITIAL: Maintenance Outage – Retail/Wholesale

SHORT DESCRIPTION:  Scheduled Maintenance Outage

INTENDED AUDIENCE:  All Market Participants

DAY AFFECTED:  Sunday, November 11, 2012 from 06:00 through 21:00

LONG DESCRIPTION:  ERCOT has scheduled a maintenance outage for Sunday, November 11, 2012 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.
• MarkeTrak will be unavailable for the duration of the outage.

• Retail Application components of the MIS and the Retail API will NOT be available

• Retail Reports and Extracts may be impacted during the outage timeframe
• eService application will be unavailable on the Market Information System (MIS)

• MPIM will be unavailable for the duration of the outage.

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.

DH/CD

402493