NOTICE DATE: February 9, 2009 NOTICE TYPE: W-A020509-02 Operations SHORT DESCRIPTION: DATE CORRECTION - 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: Some of the dates listed below in the MOTE DST Testing schedule were incorrectly dated 2008 in the previous notice. All of the dates listed for the MOTE DST Testing below are correctly listed as 2009. 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 03/07/2009 19:00 Start test; Day Ahead and AS/RPRS Markets Open 02/17/2009 10:00 03/07/2009 21:00 AS Market Close 02/17/2009 10:30 03/07/2009 21:30 Day Ahead Market Close, run RPRS 02/17/2009 13:00 03/07/2009 00:00 Start of DST day/00:00 of 23 hr day 02/17/2009 14:00 03/08/2009 01:00 02/17/2009 15:00 03/08/2009 03:00 DST Transition 02/17/2009 17:00 03/08/2009 05:00 Close of test Real-time Simulated time 02/19/2009 08:00 03/07/2009 19:00 Start test; Day Ahead and AS/RPRS Markets Open 02/19/2009 10:00 03/07/2009 21:00 AS Market Close 02/19/2009 10:30 03/07/2009 21:30 Day Ahead Market Close, run RPRS 02/19/2009 13:00 03/08/2009 00:00 Start of DST day 02/19/2009 14:00 03/08/2009 01:00 02/19/2009 15:00 03/08/2009 03:00 DST Transition 02/19/2009 17:00 03/08/2009 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