NOTICE DATE:  February 19, 2013

NOTICE TYPE:  W-A012213-03 Operations

SHORT DESCRIPTION:  Updated times for ERCOT MOTE DST testing

INTENDED AUDIENCE:  QSE operations personnel

DAYS AFFECTED:  See table below

LONG DESCRIPTION:  The ERCOT Market Operations Test Environment (MOTE) will be available for Market Participant Daylight Saving Time (DST) testing for the period listed in the table below. The testing period will be from Tuesday through Friday and will follow the simulated times shown in the table. The MOTE will be unavailable on Monday of the testing week to allow ERCOT to prepare for the test. Please note that these times are different from what was previously published.

MOTE DST Testing




Simulated time


02/26/2013   08:00

03/08/2013   08:00

Start testing QSE submissions for short day

02/27/2013   10:00

03/09/2013   10:00

DAM close for Operating Day 03/10/2013

02/28/2013   01:00

03/10/2013   01:00


02/28/2013   02:00

03/10/2013   03:00

DST transition time

02/28/2013   03:00

03/10/2013   04:00


03/01/2013   17:00

03/11/2013   18:00

Close of Test





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 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: The URL for UI submissions will be:

The following are examples of how the hourly intervals for March 10, 2013, are labeled:



0300 (this label is for Hour Ending 0200 in MMS)



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].

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