Penstemon Solar Project
Solar power plant · Kittitas County, Washington
Nameplate capacity
5.0 MW
Rank in Washington
#112
of 139 plants
In service since
2022
January 2022
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Altus Power America Management, LLC
- County
- Kittitas County
- Generating units
- 1
- Share of state capacity
- 0.02%
- Rank among solar plants in Washington
- #5 of 7
- EIA plant code
- 62069
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| PENST | Solar Photovoltaic | 5.0 MW | 5.0 MW | 2022 | 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 Washington
| Cedar Hills | Other | 5.4 MW |
| Camas Solar Project | Solar | 5.0 MW |
| Urtica Solar Project | Solar | 5.0 MW |
| West Point Treatment Plant | Other | 4.6 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 Washington power plants · What Washington actually generates