Integrated Resource Plan
Ameren Missouri's Integrated Resource Plan (IRP) outlines a 20-year energy roadmap for maintaining reliable service and managing costs under a range of customer usage scenarios.
Ameren Missouri employee observes installation of a large energy facility component at a construction site.
A 20-Year Roadmap for Reliable Energy
The IRP reflects several long-term considerations, including forecasted customer energy needs, economic growth, available energy resource technologies and associated costs. It maintains a balanced mix of generation resources, combining existing assets with planned additions to ensure continued reliability.
Download Plan Summary (PDF)
Plan Highlights


An outline of the long-term roadmap for meeting customer needs through disciplined scenario planning and investments to cost-effectively keep the lights on for customers.

The strategy optimizes a mix of natural gas, solar, energy storage, fuel cells, wind, nuclear and other technologies to support reliability and stabilize costs under a range of future conditions.

The investments needed to keep energy available when customers need it most.
Preferred Plan Timeline
 
Timeline showing the major generation additions, retirements and nuclear milestones in Ameren Missouri's 2026 Integrated Resource Plan from 2029 through beyond 2044. In 2029, 1,900 megawatts (MW) of simple-cycle natural gas combustion turbine generation are added. Through 2030, 2,400 MW of battery energy storage and 1,300 MW of solar generation are added, while 500 MW of natural gas generation retires. By 2031, 2,100 MW of natural gas combined-cycle generation is added. Between 2031 and 2035, 1,050 MW of additional solar generation and 1,500 MW of wind generation are added. By the end of 2035, Sioux Energy Center retires and an additional 2,800 MW of natural gas combined-cycle generation is added. Between 2036 and 2040, 1,300 MW of natural gas generation retires, 500 MW of natural gas fuel cells are added, and 1,200 MW of new nuclear generation is added. Between 2036 and 2045, another 1,250 MW of solar generation is added. After 2040, an additional 2,400 MW of simple-cycle natural gas generation is added. By 2042, 1,400 MW of additional natural gas combined-cycle generation is added, all four units of Labadie Energy Center retire, and Ameren Missouri completes the retirement of all coal-fired generation. Beyond 2044, Ameren Missouri expects to seek an extension of the operating license for the Callaway Energy Center nuclear facility.

Integrated Resource Plan Details