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NOTICE DATE: January 15, 2021

NOTICE TYPE: M-C010821-02 Outage - Retail/Wholesale

SHORT DESCRIPTION: Reminder - Planned system maintenance with impacted services

INTENDED AUDIENCE: ERCOT Market Participants

DAYS AFFECTED: January 20, 2021 09:30 – 12:00; January 21, 2021 17:00 – 20:00, January 22, 2021 10:00 – 12:00; January 22, 2021 16:30 - 18:30

LONG DESCRIPTION: ERCOT will perform planned system maintenance of several databases and applications January 20 – 22, 2021.

During the January 20, 2021 09:30 – 12:00 outage window, Market Participants may experience intermittent issues with the following services:

During the January 21, 2021 17:00 – 20:00 outage window, all services available through the Market Information System (MIS) will be unavailable, including the following:

 During this outage window, please use the following URLs to directly access the Market Manager, CRR Market User Interface, and Outage Scheduler: 

During the January 22, 2021 10:00 – 12:00 outage window, Market Participants may experience intermittent issues with the following services:

During the January 22, 2021 16:30 – 18:30 outage window, Market Participants may experience intermittent issues with the following services:

Note that the outage start times may be delayed depending on the current system conditions.

ADDITIONAL INFORMATION: Reports will be rerun and reposted as applicable. ERCOT.com dashboard displays will not be populated with data during the January 21, 2021 17:00 – 20:00 timeframe.

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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