Ameren Missouri files 2026 integrated resource plan with Missouri PSC
AEE•Ameren Missouri filed a non-binding 2026 integrated resource plan with the Missouri Public Service Commission on Sept. 28, 2026. The preferred plan targets additions of natural gas generation, renewables, battery storage and nuclear capacity, with demand growth projected at 2.9-3.9 GW by 2030 and 6-9 GW by 2045.
1. Plan outlines resource needs
Ameren Missouri’s preferred plan targets major additions of natural gas generation, renewables, battery storage and nuclear capacity, while shifting some coal retirements later. The utility expects to seek Nuclear Regulatory Commission approval to extend Callaway’s operating license beyond its 2044 expiration.
