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NOTICE DATE: November 19, 2019

NOTICE TYPE: M-D111319-02 Release - Wholesale

SHORT DESCRIPTION: Reminder - Cut-over plan for Market Management system (MMS) and OS (Outage Scheduler) User Interface (UI) upgrade on November 21, 2019


DAY AFFECTED: November 21, 2019, 15:30 - 16:30

LONG DESCRIPTION: On Thursday, November 21, 2019, as part of the Market Information System (MIS) Tech Refresh project, ERCOT will upgrade the technical stack for MMS and OS UI that supports the following URL:

During the maintenance period, Market Participants may experience intermittent issues with the following services:

There will be no functionality changes to any MMS and OS UI applications.

ADDITIONAL INFORMATION: Should you experience an issue with the URL https://mis.ercot.com, please contact the ERCOT Helpdesk.

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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