A fire sparked at an industrial building in Barrio Logan Saturday, according to fire officials.
The blaze began just after 11:20 a.m. at the CP Kelco building located at 2075 East Belt St.
San Diego Fire-Rescue Department officials said firefighters could see smoke streaming from the building when they arrived on scene, but no flames were visible. A strong odor was also coming from inside.
They soon determined the electrical paneling underneath the plant had caught fire, and they had to wait for the system to be powered down before going in to make sure everything was safe.
Officials say the plant uses its own electrical system to power the building.
No one was injured in the fire. Investigators will continue to look into what caused the grid to ignite.