Montana
power plants.
Montana has 37 operating power plants in the catalog, 5,377 MW in all. The catalog also marks 1 plant as Retired, with 50 MW of capacity. Its operating fleet leans on hydro, which accounts for 47.8% of operating capacity, with coal second at 31.9%. The largest operating plant in the catalog is Colstrip Steam Plant (1,556 MW, recorded start year 1984).
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Montana electricity mix
Operating installed capacity by fuel. Each row gives megawatts and its share of the operating total.
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Largest plants in Montana
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Newest plants in Montana
Operating plants with the most recent recorded start years. The catalog records years, not full commissioning dates.
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Frequently asked questions
Where does Montana get its electricity?
Across the 37 operating plants in the catalog, capacity is led by hydro at 47.8%, then coal at 31.9%. These are installed-capacity shares, not live generation.
What is the largest power plant in Montana?
The largest operating plant in the catalog for Montana is Colstrip Steam Plant, a coal facility with 1,556 MW and a recorded start year of 1984.
How many power plants are in Montana?
The catalog tracks 37 operating power plants in Montana, with 5,377 MW in all. It also marks 1 plant as Retired, with 50 MW of capacity.