NOTICE DATE: February 5, 2009 NOTICE TYPE: W-A020509-01 Operations SHORT DESCRIPTION: The ERCOT Market Operations Test Environment (MOTE) will be open for Daylight Savings Time testing INTENDED AUDIENCE: QSE Operations Personnel DAY AFFECTED: February 17 and February 19, 2009 LONG DESCRIPTION: The ERCOT Market Operations Test Environment (MOTE) will be available for Market Participant testing on Tuesday, February 17, 2009, with a back-up testing day of Thursday, February 19, 2009. This testing will follow the simulated times shown in the table below. The MOTE will be unavailable on February 16, 2009, in order to prepare for the tests. MOTE DST Testing Real-time Simulated time 02/17/2009 08:00 03/07/2008 19:00 Start test; Day Ahead and AS/RPRS Markets Open 02/17/2008 10:00 03/07/2008 21:00 AS Market Close 02/17/2008 10:30 03/07/2008 21:30 Day Ahead Market Close, run RPRS 02/17/2008 13:00 03/07/2008 00:00 Start of DST day/00:00 of 23 hr day 02/17/2008 14:00 03/08/2008 01:00 02/17/2008 15:00 03/08/2008 03:00 DST Transition 02/17/2008 17:00 03/08/2008 05:00 Close of test Real-time Simulated time 02/19/2008 08:00 03/07/2008 19:00 Start test; Day Ahead and AS/RPRS Markets Open 02/19/2008 10:00 03/07/2008 21:00 AS Market Close 02/19/2008 10:30 03/07/2008 21:30 Day Ahead Market Close, run RPRS 02/19/2008 13:00 03/08/2008 00:00 Start of DST day 02/19/2008 14:00 03/08/2008 01:00 02/19/2008 15:00 03/08/2008 03:00 DST Transition 02/19/2008 17:00 03/08/2008 05:00 Close of test ADDITIONAL INFORMATION: Please refer to the latest version of the Market Participant XML Interface document for additional information on Daylight Savings Time. The URL for XML submissions will be: https://mostest.ercot.com/ercot-xml/servlet/Listener. The URL for portal submissions will be: https://testtml.ercot.com<https://testtml.ercot.com/>. Please refer to the latest version of the Market Participant XML Interface document for additional information on Daylight Savings Time. The following are examples of how the 15 minute intervals for March 8, 2009, are labeled: ... 0130 0145 0300 0315 0330 etc. and the hourly intervals are labeled as follows: ... 0100 0300 0400 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/>. sg