Old Mill Solar
Solar power plant · Klamath County, Oregon
Nameplate capacity
5.0 MW
Rank in Oregon
#169
of 301 plants
In service since
2015
December 2015
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Old Mill Solar
- County
- Klamath County
- Generating units
- 1
- Share of state capacity
- 0.03%
- Rank among solar plants in Oregon
- #48 of 148
- EIA plant code
- 59374
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| OMSLR | Solar Photovoltaic | 5.0 MW | 5.0 MW | 2015 | 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 Oregon
| Butter Creek Power LLC | Wind | 5.0 MW |
| Juniper Ridge Hydroelectric Project | Hydro | 5.0 MW |
| Owyhee Dam Power Project | Hydro | 5.0 MW |
| Finley Buttes Landfill Gas | Other | 4.8 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 5.0 MW solar plant and a 5.0 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 Oregon power plants · What Oregon actually generates