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DATE: January 15, 2021

NOTICE TYPE: M-B010821-02 Outage - Retail/Wholesale

SHORT DESCRIPTION: Reminder - Planned system maintenance with impacted services

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED: January 19, 2021 15:05 – 18:00

LONG DESCRIPTION: ERCOT will be performing planned system maintenance of Energy and Market Management systems (EMS, MMS and EIN) databases on January 19, 2021 during a maintenance window of 15:05 – 18:00.

During the maintenance period on January 19, 2021, Market Participants will experience an outage on the following services from 16:20 until 16:40:

Note that start and completion times of this maintenance may be delayed depending on system conditions at that time. A Hotline call to Market Participants will be executed prior to and following completion of the maintenance.

ADDITIONAL INFORMATION: Note that the Market Information System (MIS) and Current Day Reports (CDR) system will be impacted. Reports will be rerun and reposted as applicable. ERCOT.com dashboards and displays will not be populated with data during this 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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