NOTICE DATE: September 20, 2016 NOTICE TYPE: W-A092016-01 Operations SHORT DESCRIPTION: ERCOT MOTE will be open for DST testing INTENDED AUDIENCE: QSE operations personnel DAY AFFECTED: October 3 through October 7, 2016 and October 24 through October 28, 2016 LONG DESCRIPTION: The ERCOT Market Operations Test Environment (MOTE) will be available for Market Participant Daylight Saving Time (DST) testing as listed in the tables below. Note that there are two periods for testing this year. The testing periods will be from Monday through Friday and will follow the simulated times shown in the table. Iteration 1 Real-time Simulated time MOTE system DST Testing 10/3/16 10:00 AM 11/3/16 10:00 PM MOTE Servers Normal Time change to DST Time 10/3/16 1:00 PM 11/4/16 1:00 AM Start testing QSE submissions for next 7 days including 11/05/2016, Long Day 11/06/2016 Operating Days 10/3/16 10:00 PM 11/4/16 10:00 AM DAM close for Operating Day 11/05/2016 10/4/16 10:00 PM 11/5/16 10:00 AM DAM close for Operating Day 11/06/2016 (Long DST Day ) 10/5/16 2:00 PM 11/6/16 2:00 AM DST Transition Time 10/5/16 3:00 PM 11/6/16 2:00* AM DST Repeated Hour 10/5/16 11:00 PM 11/6/16 10:00 AM DAM close for Operating Day 11/07/2016 10/6/16 11:00 PM 11/7/16 10:00 AM DAM close for Operating Day 11/08/2016 10/7/16 10:00 AM 11/7/16 9:00 PM Close of Test and MOTE Servers DST Time Change to Normal Time Iteration 2 Real-time Simulated time MOTE system DST Testing 10/24/16 10:00 AM 11/3/16 10:00 PM MOTE Servers Normal Time change to DST Time 10/24/16 1:00 PM 11/4/16 1:00 AM Start testing QSE submissions for next 7 days including 11/05/2016, Long Day 11/06/2016 Operating Days 10/24/16 10:00 PM 11/4/16 10:00 AM DAM close for Operating Day 11/05/2016 10/25/16 10:00 PM 11/5/16 10:00 AM DAM close for Operating Day 11/06/2016 (Long DST Day ) 10/26/16 2:00 PM 11/6/16 2:00 AM DST Transition Time 10/26/16 3:00 PM 11/6/16 2:00* AM DST Repeated Hour 10/26/16 11:00 PM 11/6/16 10:00 AM DAM close for Operating Day 11/07/2016 10/27/16 11:00 PM 11/7/16 10:00 AM DAM close for Operating Day 11/08/2016 10/28/16 10:00 AM 11/7/16 9:00 PM Close of Test and MOTE Servers DST Time Change to Normal Time ADDITIONAL INFORMATION: For information regarding submissions, including Daylight Saving Time requirements, please refer to the latest version of the EIP External Interface Specifications document for use of the External Web Services (EWS) found in the Wholesale section of the http://www.ercot.com/services/mdt/xsds/ webpage. The most recent External Web Services XSD may also be found in the same location. During testing, the URL for XML submissions will be: https://testingapi.ercot.com/2007-08/Nodal/eEDS/EWS/. The URL for UI submissions will be: https://testing.ercot.com/mmsui/mmsui/displayTradesLanding.action. The following are examples of how the Long DST Day November 5, 2016 are labeled: 0100 0200 (Normal Hour) 0200* (Repeated Hour) 0300 0400 0500 The MOTE MPIM application will be unavailable for the duration of the DST testing. 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. nb