"This is a multi-day outage," said Bryce Conrad, the president and CEO of Hydro Ottawa. The tornado that touched down at Hunt Club and Greenbank on Friday afternoon severely damaged the nearby Merivale Transformer Station, one of the two major funnels of power into the city. Hydro Ottawa, the city's local power distributor, relies on the transmission corridor operated by the province's Hydro One. But the damage to the Merivale station is accounting for at least 60 per cent of the outages. There are also local Hydro One customers without power in eastern Ontario who are also facing multiple days without power.

Source: CBC News September 22, 2018 18:11 UTC