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NOTICE DATE: February 24, 2021

NOTICE TYPE: M-B022421-01 Operations

SHORT DESCRIPTION: ERCOT 2021 DST testing Information

INTENDED AUDIENCE: QSE operations personnel

DAYS AFFECTED: March 7, 2021

LONG DESCRIPTION: ERCOT has changed how it will facilitate Daylight Savings Time (DST) testing in ERCOT Market Operations Testing Environment (MOTE) this year. A Qualified Scheduling Entity (QSE) can perform testing in - MOTE for DST as the March 14, 2021 Operating Day becomes available for Market Manager System (MMS) submissions.  Note that there will NOT be a MOTE time change for DST testing, so QSEs should use the available lead time in MMS to test and complete submissions for Operating Day March 14, 2021. 

ADDITIONAL INFORMATION: For information regarding submissions, including DST 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 XSDs webpage. The most recent External Web Services XSD may also be found in the same location.

For MOTE testing, the URL for XML submissions is: https://testmisapi.ercot.com/2007-08/Nodal/eEDS/EWS/.

The URL for UI submissions is: https://testmis.ercot.com/mmsui/mmsui/displayTradesLanding.action.

The following are examples of how the Short DST Day March 14, 2021will be labeled:





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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