← Back to the list
Grid infrastructureCanadaEIR-1672

Electrical transformer explodes in Toronto's Forest Hill area

2025Published 30 Sept 2026Responsible editor: Chief Editor

Estimated damageEstimated by the register's adjusterHow? Know the real figure?
Figure hidden: shown to subscribersLow confidence
supply cut for about •• daysShown in the record →Full estimate
From the recordFailed part hidden

CTV News reported that an electrical transformer exploded in the Forest Hill area of Toronto and that no injuries were reported. The cause, the operator, whether there was a fire or a power cut, and the extent of any damage were not reported in the available account.

Not reported.

  1. Treat a headline report of a transformer explosion as incomplete until cause, supply impact and damage are confirmed.
  2. Record injury status separately from other harm, and do not infer outcomes the report does not state.
  3. Keep the failed unit available for inspection so the failure mode can be identified when more information appears.

More lessons on maintenance, inspection and ageing assets, from every incident on the register.

Published 2026-09-30. Written from public reporting. Descriptive, not investigative. See the data accuracy disclaimer.

See the register's stories first in Google: add it as a preferred source.

Chart to reuse with this story: Grid infrastructure incidents in Canada, by year, free with a credit (PNG).

Grid infrastructure incidents in Canada: 30 entries, with a free alert for the next one.

Substation and transformer fires: the counts, the latest entries and a free alert for the next one. Also: transformer explosions.

Browse the full register or submit an incident.