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2/10/25, 10:07 AM

M-A020325-02 ERCOT MOTE will be open for DST testing


NOTICE DATE: February 10, 2025

NOTICE TYPE: M-A020325-02 Operations

SHORT DESCRIPTION: ERCOT MOTE will be open for DST testing - ERCOT API Public Key SSL certificate updated February 7, 2025

INTENDED AUDIENCE: QSE operations personnel

DAYS AFFECTED: February 10, 2025, through February 14, 2025

LONG DESCRIPTION: The ERCOT Market Operations Test Environment (MOTE) will be available for Market Participant Daylight Saving Time (DST) testing as listed in the table below. There is only one period for testing this year. The testing period will be from Monday through Friday and will follow the simulated times shown in the table.

Real Time

Simulated Time

MOTE System Activity

Mon 2/10/2025 14:00

Fri 3/7/2025 2:00

MOTE servers Normal Time change to DST Time

Mon 2/10/2025 17:00

Fri 3/7/2025 5:00

Start testing QSE submissions for next 5 days, including Short Day 3/9/2025

Mon 2/10/2025 22:00

Fri 3/7/2025 10:00

DAM close for Operating Day 3/8/2025

Tue 2/11/2025 22:00

Sat 3/8/2025 10:00

DAM close for Operating Day 3/9/2025 (Short DST Day)

Wed 2/12/2025 13:00

Sun 3/9/2025 1:00

CST Time

Wed 2/12/2025 14:00

Sun 3/9/2025 3:00

DST Transition Time - CDT

Wed 2/12/2025 21:00

Sun 3/9/2025 10:00

DAM close for Operating Day 3/10/2025

Thu 2/13/2025 21:00

Mon 3/10/2025 10:00

DAM close for Operating Day 3/11/2025

Fri 2/14/2025 14:00

Tue 3/11/2025 3:00 

Close of testing and MOTE servers DST Time change to Normal Time

 

ACTION REQUIRED: On February 07, 2025, ERCOT replaced the ERCOT API Public Key SSL certificate used by the Market Operations Test Environment (MOTE) and Retail Market Test Environment (RMTE) External Web Services (EWS) with a new GlobalSign API Public Key Secure Sockets Layer (SSL).

Market Participants must download and install the following into their application's key store:
1.) the new ERCOT MOTE and RMTE API Public Key,
2.) the new ERCOT API Public Key,
3.) the GlobalSign RSA Organization Validation CA - 2018 Intermediate SSL Certificate, and
4.) the GlobalSign Root R3 SSL Certificate.

All Certificates, including the updated public key, are available for download on ERCOT.com at: http://www.ercot.com/services/mdt/webservices/

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 on 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 09, 2025 will be labeled:

0100

0200

0400

0500

CONTACT: Market Participants that experience issues related to API submissions should submit a ticket detailing the issues: https://www.ercot.com/mp/mpsupt

If you are receiving email from a public 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.

 

dg