NOTICE DATE: January 28, 2010 NOTICE TYPE: R-A012810-02 Completion - Outage: NAESB system SHORT DESCRIPTION: ERCOT has completed the scheduled emergency outage of our NAESB system taken to resolve the NAESB production issue. INTENDED AUDIENCE: CRs and TDSPs DAY AFFECTED: January 28, 2010 from 2:00 PM to 3:00 PM DESCRIPTION: ERCOT completed the scheduled emergency outage of our NAESB system at approximately 2:58 PM today, Thursday, January 28, 2010. All systems and transaction processing were successfully reinstated at that time. As always, connectivity issues such as NAESB or TML can be reported to the ERCOT Help Desk at 512-248-6800 or [log in to unmask]<mailto:[log in to unmask]> or to your ERCOT Account Manager. ADDITIONAL INFORMATION: Further details and required actions will be provided in updates to the R-A012610-01 INITIAL - Retail Processing notice. ERCOT has also scheduled a conference call for any additional question concerning this Retail Processing issue. The conference call details are as follows: Teleconference: 1-866-469-3239 Meeting number: 354 041 405 Conference Call Date and Time: January 29, 2010 3:00 PM 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/>. DP/DG From: ERCOT Client Relations Sent: Thursday, January 28, 2010 10:09 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]; [log in to unmask]; 1 ERCOT Client Service Reps Cc: [log in to unmask]; [log in to unmask]; [log in to unmask] Subject: R-A012810-01 Outage: NAESB system NOTICE DATE: January 28, 2010 NOTICE TYPE: R-A012810-01 Outage: NAESB system SHORT DESCRIPTION: ERCOT has scheduled an emergency outage of our NAESB system in order to fix the current production issue. INTENDED AUDIENCE: CRs and TDSPs DAY AFFECTED: January 28, 2010 from 2:00 PM to 3:00 PM DESCRIPTION: ERCOT has scheduled an emergency outage of our NAESB system in order to fix the current production issue. ADDITIONAL INFORMATION: ERCOT has scheduled a conference call to provide the results of the CERT testing and answer questions regarding the current production issue. The conference call details are as follows: Teleconference: 1-866-469-3239 Meeting number: 357 739 496 Conference Call Date and Time: January 28, 2010 11:00 AM 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/>. DP/DG