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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 23 Jan 2019

Outage Times Systems Description
There are no scheduled outages.

Future Outages

Outage Times Systems Description
January 28, 2019
10:00 - 12:00 EST Sandbox Outage Coordination and Scheduling System (OCSS) - CROW Web Interface OCSS Web User Interface will be unavailable for outage submission and retrieval.OCSS Web Service will be unavailable for outage submission and retrieval.
January 29, 2019
10:45 - 10:50 EST 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.
10:45 - 10:50 EST Message Exchange Loss of access to Message Exchange will result in the following applications being impacted:
  • Automated dispatch instructions will be unavailable. The IESO will manually dispatch by phone as necessary.
08:40 - 08:50 EST IESO Reports Site Confidential Report publication will be delayed.

Public Report publication will be delayed.
February 13, 2019
13:15 - 13:45 EST 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.
13:15 - 13:45 EST Message Exchange Loss of access to Message Exchange will result in the following applications being impacted:
  • Automated dispatch instructions will be unavailable. The IESO will manually dispatch by phone as necessary.
14:00 - 14:10 EST IESO Reports Site The Predispatch report will not be published.