A CPS Energy power plant silo in southeast Bexar County was scheduled to come offline following an explosion Tuesday morning.
According to a press release, the explosion at the Deely 1 420-megawatt power plant happened shortly before 11 a.m.
No injuries were reported and all employees were accounted for, CPS Energy officials said.
The explosion damaged the cascade building, which feeds coal into silos before it's moved into the plant, CPS Energy officials said.
For safety reasons and to expedite the investigation, crews were in the process of taking the plant offline.
The plant is located at a 7,500-acre power station in southeast Bexar County.