Ameren Missouri files for 2,100-MW natural gas plant in West Alton

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Ameren Missouri plans new energy center to deliver long-term value and around-the-clock power

July 27, 2026 6:55 AM EDT

Key Takeaways:

Ameren Missouri plans to build the West Alton Energy Center, a new 2,100-megawatt facility designed to provide dependable energy at all times of day for customers across Missouri.The project will support reliable service during periods of high demand, extreme weather and changing grid conditions.By expanding in-state energy production, the West Alton Energy Center will help power Missouri's growing economy while ensuring communities have the electricity they need for... More