South Mills Solar, LLC
Solar power plant · Big Horn County, Montana
Nameplate capacity
3.0 MW
Rank in Montana
#66
of 73 plants
In service since
2017
April 2017
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Adapture Renewables, Inc.
- County
- Big Horn County
- Generating units
- 1
- Share of state capacity
- 0.04%
- Rank among solar plants in Montana
- #8 of 9
- EIA plant code
- 61290
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| SMSMT | Solar Photovoltaic | 3.0 MW | 3.0 MW | 2017 | 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
| Green Meadow Solar, LLC | Solar | 3.0 MW |
| Magpie Solar, LLC | Solar | 3.0 MW |
| Stoltze CoGen1 | Other | 2.8 MW |
| Flint Creek Hydroelectric LLC | Hydro | 2.0 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 3.0 MW solar plant and a 3.0 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