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Sector Participants > Calendars > Planned IT Outages

Planned IT Outages

All planned IT system outages are posted as soon as they are scheduled. Participants can view outage notification details for the same day, as well as outages planned in the future.


Participants can also view information about outages that occurred in the past 60 days by selecting Archive in the table below.

Planned Outages for 29 Aug 2025

Outage Times Systems Description
There are no scheduled outages.

Future Outages

Outage Times Systems Description
September 4, 2025
14:00 - 16:00 EDT OMB

13:15 - 13:45 EDT

Dispatch Service:
Automated dispatch instructions sent via Dispatch Service will be unavailable. The IESO will manually dispatch by phone as necessary. The Dispatch Service Web UI users may get disconnected and will need to login and verify connected after the outage.

Users may get disconnected and will need to login and verify access (MP action may be required).

13:15 - 13:45 EDT

ICCP:
The Inter-Control Center Communication Protocol (ICCP) link to IESO will be unavailable.

13:15 - 13:45 EDT

IESO Reports Site:
Confidential Report publication will be delayed.

Public Report publication will be delayed.

13:15 - 13:45 EDT

UCM:
Commitment notifications will not be issued.

14:00 - 14:10 EDT

IESO Reports Site:
The Adequacy report will not be published.

14:00 - 15:00 EDT

IESO Reports Site:
The Predispatch report will not be published.