NOTICE DATE: December 11, 2023

NOTICE TYPE: M-B121123-01 Outage - Retail/Wholesale

SHORT DESCRIPTION: Planned system maintenance with impacted services


DAYS AFFECTED: December 14, 2023, 15:30 - 17:00

LONG DESCRIPTION: ERCOT will be performing planned system maintenance of Energy and Market Management systems (EMS, MMS, ITRON databases) on December 14, 2023 during a maintenance window of 15:30 – 17:00.

During the maintenance period on December 14, 2023, Market Participants may experience an outage on the following services from 16:15 until 16:45.

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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