According to the Los Angeles County Fire Department, the incident call came in just before 3:45 p.m.
A group of around 11 people had to be rescued, authorities said. The power outage also impacted the Harry Potter ride.
No injuries were reported and crews were able to get everyone out to safety.
AIR7HD video above the stage showed LACOFD units surrounding the north side of the theme park, which appeared to be the only part affected by the outage.
Copyright © 2022 KABC Television, LLC. All rights reserved.