The lights went out unexpectedly Thursday afternoon, affecting several buildings.
The Fresno State Police Department says most everyone was able to exit safely -- except for a few people stuck in elevators for at least 30 minutes.
ABC30 talked with a student who was studying in the Henry Madden Library at the time.
"I was studying with my friend and she let out a little huh a little gasp," said Francisco Alanis. "A little surprised. Yeah she was a little surprised. I wasn't. I was reading. Yeah, it was just total darkness."
Crews are still working to restore power to Fresno State. Most classes are expected to be in session Friday.