March 18, 2024--Written by John Egan for Industrial Info Resources (Sugar Land, Texas)--Ameren Corporation (NYS:AEE) (St. Louis, Missouri), which operates electric utilities in Missouri and Illinois, has only recently started decarbonizing its electricity supply. But the company, which also operates a gas utility in Illinois and an electric transmission business, is taking big steps to become a net-zero emitter of greenhouse gases by 2045.