NOTICE DATE: April 13, 2012 NOTICE TYPE: M-B040512-02 REMINDER: Maintenance Outage – Retail/Wholesale SHORT DESCRIPTION: Scheduled Maintenance Outage INTENDED AUDIENCE: All Market Participants DAY AFFECTED: Sunday, April 15, 2012 from 06:00 through 21:00 LONG DESCRIPTION: ERCOT has scheduled a maintenance outage for Sunday, April 15, 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: * ERCOT.com – www.ercot.com<http://www.ercot.com> * 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 · Components on ERCOT.com will intermittently NOT be available including: * Access to Dashboards * Access to Public Notices 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/>. DH/JA 305958 From: ERCOT Client Services Sent: Thursday, April 05, 2012 10:57 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-B040512-01 INITIAL: Maintenance Outage – Retail/Wholesale - Sunday, April 15, 2012 from 06:00 through 21:00 NOTICE DATE: April 5, 2012 NOTICE TYPE: M-B040512-01 INITIAL: Maintenance Outage – Retail/Wholesale SHORT DESCRIPTION: Scheduled Maintenance Outage INTENDED AUDIENCE: All Market Participants DAY AFFECTED: Sunday, April 15, 2012 from 06:00 through 21:00 LONG DESCRIPTION: ERCOT has scheduled a maintenance outage for Sunday, April 15, 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: * ERCOT.com – www.ercot.com<http://www.ercot.com> * 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 – data will not be refreshed during the impacted timeframes * Access to Notices * 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 · Components on ERCOT.com will intermittently NOT be available including: * Access to Dashboards * Access to Public Notices 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/>. DH/JA 305958