Idaho
power plants.
Idaho has 55 operating power plants in the catalog, 4,012 MW in all. Its operating fleet leans on hydro, which accounts for 45.8% of operating capacity, with natural gas second at 30.7%. The largest operating plant in the catalog is Rathdrum Power Station (468 MW, recorded start year 1994).
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: .
Idaho 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 Idaho
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Newest plants in Idaho
This table includes 5 of the 9 operating plants with a recorded start year of 2012, largest first. 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 Idaho get its electricity?
Across the 55 operating plants in the catalog, capacity is led by hydro at 45.8%, then natural gas at 30.7%. These are installed-capacity shares, not live generation.
What is the largest power plant in Idaho?
The largest operating plant in the catalog for Idaho is Rathdrum Power Station, a natural gas facility with 468 MW and a recorded start year of 1994.
How many power plants are in Idaho?
The catalog tracks 55 operating power plants in Idaho, with 4,012 MW in all.