North Peace Secondary School will be open for classes on Thursday.
The school has been closed since Tuesday after a water pipe in the school's fire suppression system burst and destroyed the school's electrical transformer, leaving the building without heat or power.
The school is running off a generator until the transformer can be completely replaced, a fix expected to take some time.
"It's the wrong time of year to be without heat or power," School District 60 Superintendent Dave Sloan said.
District staff were able to respond to the leak immediately after the incident triggered the school's alarm system late Monday night, Sloan said.
There was minimal damage beyond the transformer, Sload said, and the building has been powered over the last two days with temporary, emergency generators.
Those have been replaced with a larger, external generator, and heating, lighting, and computer systems have been restored, Sloan said.
There will be some contingencies, however: there will be no public Wi-Fi, for example, and the school will be taking power-saving measures so the generator isn't overloaded.
Sloan gave a nod to staff and contractors for being able to re-open the school within 48 hours.
The school district will be monitoring the situation and providing updates as needed, Sloan said.
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