NOTICE DATE: October 29, 2021

NOTICE TYPE: M-C102921-01 Outage - Retail/Wholesale

SHORT DESCRIPTION: Planned system maintenance with impacted services

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED: Nov 8, 2021 15:25 – 18:00 CST

LONG DESCRIPTION:  ERCOT will be performing planned system maintenance of Energy and Market Management systems (EMS, MMS, ITRON and EIN) databases on Nov 8, 2021 during a maintenance window of 15:25 – 18:00 CST.

During the maintenance period on Nov 8, 2021, Market Participants will experience an outage on the following services from 15:25 until 15:45 CST.

Note: 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.

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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