Organizations across Missouri partner with the company to support development in our region ST. LOUIS, June 12, 2024 /PRNewswire/ -- Ameren Missouri, a subsidiary of Ameren Corporation (NYSE: AEE), received approval today from the Missouri Public Service Commission to acquire a 150-megawatt (MW) solar facility that is currently under construction in Cass County, Illinois. The Cass County Renewable Energy Center will be used to double the size of the Renewable Solutions program. "Demand remains very strong f ...