NOTICE DATE: April 15, 2013 NOTICE TYPE: M-A041213-02 Outage - Retail/Wholesale SHORT DESCRIPTION: POSTPONED - Planned system maintenance with impacted services INTENDED AUDIENCE: ERCOT Market Participants DAY AFFECTED: April 15, 2013, 16:30 - 21:30 CD LONG DESCRIPTION: The planned system maintenance for April 15, 2013, has been postponed by ERCOT until further notice. 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 email at [log in to unmask]<mailto:[log in to unmask]>. If you are receiving email 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. sa From: ERCOT Client Services Sent: Friday, April 12, 2013 11:43 AM To: [log in to unmask]; [log in to unmask] Cc: 1 ERCOT Client Service Reps; [log in to unmask]; [log in to unmask]; [log in to unmask] Subject: M-A041213-01 Planned System Maintenance with Impacted Services - April 15, 2013 NOTICE DATE: April 12, 2013 NOTICE TYPE: M-A041213-01 Outage - Retail/Wholesale SHORT DESCRIPTION: Planned system maintenance with impacted services INTENDED AUDIENCE: ERCOT Market Participants DAY AFFECTED: April 15, 2013, 16:30 - 21:30 CDT LONG DESCRIPTION: ERCOT will be performing planned system maintenance of the Market Information System (MIS), Current Day Reports (CDR), and Market Information Repository (MIR) databases and applications on April 15, 2013, within a maintenance window of 16:30 - 21:30 CDT. During this outage window, Market Participants may experience intermittent issues for approximately two hours with the following services: * Market submissions and requests via WebServices, Market Manager and Outage Scheduler * Report publishing to the ERCOT MIS * Downloading of extracts and reports from MIS and WebServices * Net Dependable Capability and Reactive Capability (NDCRC) During the outage, please use the following URLs to directly access the Market Manager and Outage Scheduler: * https://mis.ercot.com/mmsui/mmsui/displayTradesLanding.action * https://mis.ercot.com/osrui/osrui/Summary.action. Note that the two hour outage is scheduled to begin at approximately 16:30 CDT; however, this start time may be delayed depending on the current system conditions. ADDITIONAL INFORMATION: Reports will be rerun and reposted as applicable. The MIS Dashboards and ERCOT.com price displays will not be populated with data during this timeframe. 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 email at [log in to unmask]<mailto:[log in to unmask]>. If you are receiving email 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. sa