A Toronto Hydro line worker works to restore power to a house in a Scarborough neighbourhood on Friday, December 27, 2013.Chris Young/The Canadian Press
Approximately 10,000 Toronto customers were still without power on Wednesday afternoon after a wide outage on Tuesday.
The blackout comes as Newfoundland and Labrador Hydro is advising customers that it is experiencing a power emergency, as thousands of customers in the eastern and central parts of the province have been hit with sporadic loss.
Toronto Hydro says the cause of the power outages was traced to Hydro One transmission issues, pole fires and system issues due to weather.
The utility says Hydro One transmission supply issues were resolved by about 8:30 p.m., but cautioned that the system remains unstable.
Toronto Hydro says about 87,000 customers were left without power at one point, but that number had dropped to about 15,000 by late evening.
Most outages were in eastern, western, and north central Toronto and caused by snow which turned to freezing drizzle and light freezing rain in the evening.
Hydro One was also reporting about 15,000 outages in the Whitchurch-Stouffville area, 5,000 in the Barrie and Belleville regions and more than 1,000 each in the Cambridge and Caledon areas.