Power was restored to Greater Sudbury Hydro customers in Coniston at about 4:45 p.m. Sunday.
Greater Sudbury Hydro confirmed the power outage was triggered by a faulty insulator on a Hydro One line feeding the Coniston area.
Two power outages in Sudbury have affected 918 customers on Sunday, said Hydro One.
The Crown corporation said repairs are expected to be completed by 4 p.m.
Greater Sudbury Hydro has confirmed at least one power outage was in Coniston.
Wendy Watson, a spokesperson for Greater Sudbury Hydro, said at 12:30 p.m. that crews were on route to repair the problem.