Owner profile
Idaho Power Co
Idaho Power Co owns or operates 30 generating facilities commissioned between 1920 and 2024, with a combined nameplate capacity of 2.89 GW. The largest share of capacity is hydroelectric (63%), spread across 2 states.
Ownership reflects the utility or operator reported to EIA (Form EIA-860); equity ownership of individual facilities may differ.
30
Plants
2.89 GW
Total capacity
2
States
675 MW
Largest: Brownlee
Capacity mix
Hydroelectric 62.8%Natural Gas 26.3%Storage 10.7%Oil 0.2%
By state
Operating plants
| Plant | Fuel | Capacity |
|---|---|---|
| Brownlee | Hydroelectric | 675 MW |
| Hells Canyon | Hydroelectric | 411.1 MW |
| Langley Gulch Power Plant | Natural Gas | 318.5 MW |
| Evander Andrews Power Complex | Natural Gas | 270.9 MW |
| Oxbow (OR) | Hydroelectric | 190 MW |
| Bennett Mountain | Natural Gas | 172.8 MW |
| American Falls | Hydroelectric | 92.4 MW |
| C J Strike | Hydroelectric | 82.8 MW |
| Bliss (ID) | Hydroelectric | 75 MW |
| Lower Salmon | Hydroelectric | 60 MW |
| Milner Hydro | Hydroelectric | 59.5 MW |
| Twin Falls (ID) | Hydroelectric | 52.7 MW |
| Black Mesa BESS | Storage | 40 MW |
| Swan Falls | Hydroelectric | 27.2 MW |
| Upper Salmon A | Hydroelectric | 18 MW |
| Upper Salmon B | Hydroelectric | 16.5 MW |
| Shoshone Falls | Hydroelectric | 14.7 MW |
| Lower Malad | Hydroelectric | 13.5 MW |
| Cascade Dam (ID) | Hydroelectric | 12.4 MW |
| Upper Malad | Hydroelectric | 8.3 MW |
| Thousand Springs | Hydroelectric | 6.8 MW |
| Salmon Diesel | Oil | 5 MW |
| Clear Lake | Hydroelectric | 2.5 MW |
Under construction (7)
| Plant | Fuel | Capacity |
|---|---|---|
| Hemmingway BESSconstr. | Storage | 116 MW |
| Happy Valley Battery Storageconstr. | Storage | 82 MW |
| Franklin Battery Storageconstr. | Storage | 60 MW |
| Elmore BESSconstr. | Storage | 4 MW |
| Weiser BESSconstr. | Storage | 3 MW |
| Filer BESSconstr. | Storage | 2 MW |
| Melba BESSconstr. | Storage | 2 MW |