The story
The plant had two units: Unit 1 began operation in 1965 and Unit 2 began operation in 1972. Initially, coal was delivered via conveyor belt from a nearby coal mine. Formerly, the plant had low-sulfur coal delivered from the Powder River Basin. The plant was cooled by Coffeen Lake which was built to support the power plant in mind. Formerly ran by Central Illinois Public Service Company and later Ameren, Ameren sold the plant to current owner Dynegy in 2013. In 2018, Vistra Energy would assume control of Coffeen following its merger with Dynegy. In August 2019, Vistra Energy announced they were shutting down Coffeen by the end of the year in order to meet new revisions under the Multi-Pollutant Standard Rule set by the Illinois Pollution Control Board.
From Wikipedia’s article on Coffeen and Western Railroad, shared under CC BY-SA 4.0.3