UPDATE 5:45 P.M.:
Classes were canceled at San Francisco State University after a three-hour power outage shut down the college’s main campus early Thursday afternoon.
The outage occurred at 1 p.m. and appears to have been caused by equipment failure, PG&E spokesperson Andrea Menniti said. Power was restored at the university at 4:30 p.m.
Classes and all extracurricular activities were canceled as a result of the outage, and university leaders announced the campus would remain closed throughout the evening, though residence halls and SFSU’s downtown campus remained open.
The outage also affected about two dozen of PG&E’s residential customers, Menniti said.
Thornton Hall, which houseses SFSU’s Science and Engineering Department, was evacuated and locked down due to health and safety concerns.
“The chemical hoods in the labs weren’t working due to the outage, and evacuating is the appropriate response around chemicals,” SFSU spokesperson Mary Kenny said.
The outage had affected some campus network services, including the university’s email service, according to students who voiced their frustrations on Twitter.