Spion Kop Wind Farm
Wind power plant · Judith Basin County, Montana
Nameplate capacity
40 MW
Rank in Montana
#37
of 73 plants
In service since
2012
December 2012
Details
- Primary fuel
- Wind
- Technology
- Onshore Wind Turbine
- Operator
- NorthWestern Energy (MT wind/thermal)
- County
- Judith Basin County
- Generating units
- 1
- Share of state capacity
- 0.52%
- Rank among wind plants in Montana
- #13 of 23
- EIA plant code
- 58218
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| SKW25 | Onshore Wind Turbine | 40 MW | 40 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 Montana
| Holter | Hydro | 55 MW |
| Colstrip Energy LP | Coal | 46 MW |
| Diamond Willow Wind Facility | Wind | 30 MW |
| OREG 1 Inc | Other | 30 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 40 MW solar plant and a 40 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 Montana power plants · What Montana actually generates