Ameren Missouri receives approval to build vital dispatchable energy source and closes on three solar generation projects in 2024ST. LOUIS, Oct. 31, 2024 /PRNewswire/ -- Ameren Missouri, a subsidiary of Ameren Corporation (NYSE: AEE), received approval Wednesday from the Missouri Public Service Commission to build an 800-megawatt (MW) simple-cycle natural gas energy center expected to be ready to serve as a reliable backup source of energy in 2027. The Castle Bluff Energy Center represents an investment of ...