NOTICE DATE: May 4, 2012 NOTICE TYPE: M-A042712-02 REMINDER: Maintenance Outage – Retail/Wholesale SHORT DESCRIPTION: Scheduled Maintenance Outage INTENDED AUDIENCE: All Market Participants DAY AFFECTED: Sunday, May 6, 2012 from 06:00 through 21:00 LONG DESCRIPTION: ERCOT has scheduled a maintenance outage for Sunday, May 6, 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. * ERCOT Internet Services may be intermittently unavailable, including but not limited to: * MarkeTrak - https://marketrak.ercot.com:8443/tmtrack.dll * Texas Renewables – www.texasrenewables.com<http://www.texasrenewables.com/> * Retail Application components of the MIS will NOT be available. * Components of the MIS will intermittently NOT be available including: * Access to Dashboards * Downloading of extracts and reports * Access to Applications · Market Manager (MMUI), and Outage Scheduler (OSUI) will need to be accessed via the following URLs: o https://mis.ercot.com/mmsui/mmsui/displayTradesLanding.action o https://mis.ercot.com/osrui/osrui/Summary.action 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/>. JR/DH 315752 From: ERCOT Client Services Sent: Friday, April 27, 2012 3:39 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-A042712-01 INITIAL: Maintenance Outage – Retail/Wholesale - Sunday, May 6, 2012 from 06:00 through 21:00 NOTICE DATE: April 27, 2012 NOTICE TYPE: M-A042712-01 INITIAL: Maintenance Outage – Retail/Wholesale SHORT DESCRIPTION: Scheduled Maintenance Outage INTENDED AUDIENCE: All Market Participants DAY AFFECTED: Sunday, May 6, 2012 from 06:00 through 21:00 LONG DESCRIPTION: ERCOT has scheduled a maintenance outage for Sunday, May 6, 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. * ERCOT Internet Services may be intermittently unavailable, including but not limited to: * MarkeTrak - https://marketrak.ercot.com:8443/tmtrack.dll * Texas Renewables – www.texasrenewables.com<http://www.texasrenewables.com/> * Retail Application components of the MIS will NOT be available. * Components of the MIS will intermittently NOT be available including: * Access to Dashboards * Downloading of extracts and reports * Access to Applications · Market Manager (MMUI), and Outage Scheduler (OSUI) will need to be accessed via the following URLs: o https://mis.ercot.com/mmsui/mmsui/displayTradesLanding.action o https://mis.ercot.com/osrui/osrui/Summary.action 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/>. JR/DH 315752