One of two hydro generators at the Aishihik power station overheated, initiating an automatic shutdown to prevent serious damage.
Each turbine produces 15 megawatts of power whereas the Whitehorse hydro facility can produce 25 megawatts in winter months.
Power was restored to all customers between 10 and 10:30 a.m., said Yukon Energy Corporation spokesperson Janet Patterson in an e-mail.
The Minto mine, which also lost power, wasn’t put back on the hydro grid until around 11 o’clock, she said.
The mine was running on diesel during the outage.
The faulty turbine was brought online by Thursday afternoon, but at limited capacity said Patterson.
“We are watching it very closely and we have staff there who will spend the next little while determining what caused the unit to overheat,” she said.
If it acts up again, Yukon Energy will take it offline and other power sources will be used to avoid another outage.
Contact James Munson at firstname.lastname@example.org.