Horse Butte Wind I, LLC
Wind power plant · Bonneville County, Idaho
Nameplate capacity
58 MW
Rank in Idaho
#31
of 155 plants
In service since
2012
August 2012
Details
- Primary fuel
- Wind
- Technology
- Onshore Wind Turbine
- Operator
- Utah Associated Mun Power Sys
- County
- Bonneville County
- Generating units
- 1
- Share of state capacity
- 0.88%
- Rank among wind plants in Idaho
- #6 of 33
- EIA plant code
- 57890
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Onshore Wind Turbine | 58 MW | 58 MW | 2012 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Idaho
| Lower Salmon | Hydro | 60 MW |
| Milner Hydro | Hydro | 60 MW |
| Twin Falls (ID) | Hydro | 53 MW |
| Albeni Falls | Hydro | 42 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 58 MW solar plant and a 58 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Idaho power plants · What Idaho actually generates