Big Timber Wind Farm
Wind power plant · Sweet Grass County, Montana
Nameplate capacity
25 MW
Rank in Montana
#42
of 73 plants
In service since
2018
February 2018
Details
- Primary fuel
- Wind
- Technology
- Onshore Wind Turbine
- Operator
- RWE Clean Energy
- County
- Sweet Grass County
- Generating units
- 1
- Share of state capacity
- 0.33%
- Rank among wind plants in Montana
- #15 of 23
- EIA plant code
- 61155
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| BT-MT | Onshore Wind Turbine | 25 MW | 25 MW | 2018 | 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
| OREG 2 Inc | Other | 30 MW |
| Black Eagle | Hydro | 27 MW |
| Greenfield Wind - MT | Wind | 25 MW |
| Miles City GT | Natural gas | 23 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 25 MW solar plant and a 25 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