Idaho has 145 power plants in the EIA (Energy Information Administration) database, with a combined installed capacity of 5,611 MW. Renewables (solar, wind, hydro, geothermal, biomass) account for 92% of plants in the state. The largest single facility is Brownlee, a Hydroelectric plant with 661 MW of capacity.
Use the interactive Idaho power plants map below to explore every generating facility, color-coded by fuel type. Click any plant for its name, utility operator, capacity, technology, and location — or view the full US Power Plants Interactive Map to compare Idaho to every other state.
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Idaho Power Plants by the Numbers
- 145 total power plants in Idaho (EIA (Energy Information Administration))
- 5,611 MW total installed generating capacity
- 92% of plants use renewable energy sources
- Dominant fuel type: Hydroelectric
Idaho Power Plants by Fuel Type
- Hydroelectric: 76 plants (2,657 MW capacity)
- Wind: 33 plants (1,128 MW capacity)
- Solar: 12 plants (502 MW capacity)
- Biomass: 11 plants (88 MW capacity)
- Natural Gas: 8 plants (1,106 MW capacity)
- Batteries: 2 plants (100 MW capacity)
- Petroleum: 1 plants (6 MW capacity)
- Other: 1 plants (15 MW capacity)
- Geothermal: 1 plants (10 MW capacity)
The 15 Largest Power Plants in Idaho
The largest power plant in Idaho by installed capacity is Brownlee at 661 MW. The 15 largest Idaho power plants from the EIA (Energy Information Administration):
| # | Plant Name | Utility | Capacity | Fuel Type | Location |
|---|---|---|---|---|---|
| 1 | Brownlee | Idaho Power Co | 661 MW | Hydroelectric | Cambridge, Washington |
| 2 | Dworshak | USACE Northwestern Division | 465 MW | Hydroelectric | Ahsahka, Clearwater |
| 3 | Langley Gulch Power Plant | Idaho Power Co | 306 MW | Natural Gas | New Plymouth, Payette |
| 4 | Evander Andrews Power Complex | Idaho Power Co | 262 MW | Natural Gas | Mountain Home, Elmore |
| 5 | Cabinet Gorge | Avista Corp | 255 MW | Hydroelectric | Clark Fork, Bonner |
| 6 | Rathdrum Power LLC | Rathdrum Power LLC | 210 MW | Natural Gas | Rathdrum, Kootenai |
| 7 | Palisades Dam | U S Bureau of Reclamation | 176 MW | Hydroelectric | Palisades, Bonneville |
| 8 | Bennett Mountain | Idaho Power Co | 175 MW | Natural Gas | Mountain Home, Elmore |
| 9 | Cedar Creek Wind, LLC | Cedar Creek Wind, LLC | 160 MW | Wind | Shelley, Bingham |
| 10 | Rathdrum | Avista Corp | 132 MW | Natural Gas | Rathdrum, Kootenai |
| 11 | Goshen Phase II | AE Power Services LLC | 124 MW | Wind | Idaho Falls, Bonneville |
| 12 | Jackpot Solar, LLC | Duke Energy Renewables Services | 120 MW | Solar | Twin Falls, Twin Falls |
| 13 | Meadow Creek Project Company | Ridgeline Energy LLC | 116 MW | Wind | Idaho Falls, Bonneville |
| 14 | American Falls | Idaho Power Co | 103 MW | Hydroelectric | American Falls, Power |
| 15 | Franklin Solar Hybrid | Franklin Solar Idaho | 100 MW | Solar | Twin Falls, Twin Falls |
Energy Regulation in Idaho
Power generation in Idaho is overseen by the Idaho Public Utilities Commission, in coordination with the Federal Energy Regulatory Commission (FERC) and the North American Electric Reliability Corporation (NERC). All generating facilities above 1 MW are required to report to the EIA, which maintains the official database used in this map.
Frequently Asked Questions
How many power plants are in Idaho?
Idaho has 145 power plants according to the EIA (Energy Information Administration). The dominant fuel type is Hydroelectric, and total installed capacity is 5,611 MW.
What is the largest power plant in Idaho?
The largest power plant in Idaho is Brownlee, a Hydroelectric facility with 661 MW of generating capacity.
What percentage of Idaho power plants use renewable energy?
92% of power plants in Idaho use renewable energy sources (solar, wind, hydroelectric, geothermal, or biomass).
Who regulates power plants in Idaho?
Power generation in Idaho is regulated by the Idaho Public Utilities Commission at the state level, with federal oversight from FERC and NERC.
