London Hydro says morning blackout originated outside the city

London Hydro says whatever caused Wednesday's power outage in the city, originated from the electricity feed London gets from the provincial utility, Hydro One.

Power was out for about an hour for 25,000 customers during the Wednesday morning commute

London hydro worker on Dundas Street Wednesday morning after the outage. (CBC News)

London Hydro says a Wednesday morning blackout that plunged 25,000 homes and businesses in the city into darkness just before the height of the morning commute, originated outside the city. 

The electricity went out at 8:15 a.m. Wednesday and lasted for approximately an hour, affecting public libraries, Western University, crippling traffic lights and slowing the normally frenetic pace of the morning commute.

The power loss was widespread, affecting several neighbourhoods in the city's north, west and east, as well as a large swathe of the downtown core. 

Nancy Hutton, the communications director for London Hydro told CBC News Wednesday, that whatever caused the hour-long blackout originated outside the city's power grid. 

"This had something to do with the feed coming into the city," she said. "It was the feed coming into one of our stations from Hydro One." 

The sudden loss of electricity comes at a sensitive time for the city, which in the midst of Juno week, a seven-day festival honouring the best and brightest of Canadian music. 

Crews with London Hydro managed to switch the feed for the affected areas, restoring power by 9:30 a.m.

Hydro One, the provincial utility said Wednesday that the outage was limited only to London and that its crews are on-scene to investigate exact cause of the feed interruption. 

A spokeswoman said she would provide an update later in the day.