Major Event Days
Major Events are extraordinary occurrences out of a distributor’s control that cause significant disruptions in the distribution system.
A major event is beyond the control of the distributor and is unforeseeable, unpredictable, unpreventable or, unavoidable. Some examples of a major weather-related event are ice storms, major floods and tornadoes, high damaging winds.
When a distributor determines an outage was caused by a Major Event, it must:
- File a report with the Ontario Energy Board (OEB) that outlines its responses to questions regarding the Major Event within 60 days of the event.
- Post this report on its website at the same time it is filed with the OEB.
Below are major event days that have occurred and been filed with the Ontario Energy Board.
- May 4, 2018 - Adverse Weather
- May 26, 2020 - Lightning
- November 15, 2020 - Adverse Weather - Wind
- April 28, 2021 - Adverse Weather
- April 30, 2021 - Adverse Weather - Wind
- July 15, 2021 - Adverse Weather - Tornado
- December 2, 2021 - Adverse Weather - Wind
- December 11, 2021 - Adverse Weather - Wind
- June 16, 2022 - Adverse Weather - Wind
- June 13, 2024 - Adverse Weather - Wind
- March 29, 2025 - Adverse Weather - Freezing Rain/Ice Storm