A federal judge’s ruling Monday on pollution at a Jefferson County power plant could cost electric utility Ameren Corp. hundreds of millions of dollars.
The 157-page ruling, from Judge Rodney Sippel, ordered Ameren to install so-called “scrubber” technology at its Rush Island Energy Center in Festus to address pollution that he found in 2017 had violated the Clean Air Act.
Implementing that technology, called flue-gas desulfurization, could cost $650 million to $960 million, the order said, citing…
