No one was injured Saturday when one of the two generating units at the Prairie State Generating Co. overflowed and released steam and water.
The 800-megawatt unit at the Washington County power plant was offline and scheduled for maintenance Saturday when the accident occurred and the overflow of water damaged the siding of adjacent equipment. Neither the boiler nor the turbine generator was damaged.
The unit is currently being repaired and is expected to resume service by this summer.
In a statement released by the company, Prairie State Generating Co. Interim Chief Executive Officer and President Duncan Kincheloe said, "PSGC's power plant team is committed to maintaining its transparency with its member-owners and the customers they serve. The repair schedule will be updated on a regular basis."
St. Louis-based Peabody Energy owns a 5 percent stake in the Prairie State Energy Campus that since 2011 has been operating in Washington County. The power plant includes an on-site coal mine that powers the 1,800-megawatt power plant.