List of power stations in Montana

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Montana's electricity comes from a mix of coal, hydro, wind, natural gas, solar and other sources. In 2023, the state's power plants had a total summer capacity of about 6,698 MW and generated about 26,895 GWh. In 2024, the generation mix was 37% coal, 32.7% hydro, 22.2% wind, 4.2% natural gas, 1.5% petroleum, 1.4% solar, 0.1% biomass, and 1% other. Small-scale solar, like rooftop panels, added about 107 GWh to the grid in 2024.

Montana has the largest recoverable coal reserves in the United States, about 30% of the national total. Much of Montana’s coal is exported, with over a third going to Asia via western Canada. In 2019, roughly half of Montana’s electricity was exported to other states.

There were no utility-scale nuclear plants in Montana in 2022. The Hardin coal plant has been largely idle and is being re-purposed to support cryptocurrency mining. There were no large energy storage plants in 2019, but a proposed project, the Gordon Butte Pumped Storage Project, would add about 400 MW of capacity and 1,300 MWh of storage.