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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 23/09/2017

Outage Times System(s) Description
There are no scheduled outages.

Future Outages

Outage Times System(s) Description
October 4, 2017
12:15 - 12:45 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.
  • Administrative pricing will be used.
  • Pre-dispatch and dispatch schedules and prices may not be updated.
12:15 - 16:30 EST Day-Ahead Optimization System (DAOS) The Eligible Energy Limited Resource Optimization (EELR) run of the Day-Ahead Commitment Process (DACP) DAOS will not occur:
  • EELRs will be unable to resubmit their offers for consideration in the DACP after the initial DAOS run
  • If the initial DAOS run is successful, it will be considered the Schedule of Record
September 27, 2017
15:30 - 22:25 EST Online IESO Due to planned outage Online IESO will not be available. This includes the following actions:
  • create a Notice of Disagreement (NOD)
  • create a Meter Trouble Report
  • Manage Meter Installation
  • Manage My Information
  • Manage Participation
  • Manage Enrolment Requests
  • Manage System Access
  • Submit Prudential Support Information
  • Update Organization

This also includes the following Reliability Compliance Tool actions:
  • Address Compliance Gap
  • Maintain Standards Library
  • Perform IESO Self Certification
  • Report Potential Standards Violation (IESO)
  • Report Potential Standards Violation (MP)
  • Request MP Self Certifications
15:30 - 22:25 EST IESO Portal Prudential Manager used to monitor and retrieve prudential information will be unavailable
September 26, 2017
11:00 - 12:00 EST 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.