Boulder Park
Natural gas power plant · Spokane County, Washington
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Internal Combustion Engine
- Operator
- Avista Corp
- County
- Spokane County
- Generating units
- 6
- Share of state capacity
- 0.08%
- Rank among natural gas plants in Washington
- #15 of 16
- EIA plant code
- 8022
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Natural Gas Internal Combustion Engine | 4.1 MW | 4.1 MW | 2002 | Operating |
| 2 | Natural Gas Internal Combustion Engine | 4.1 MW | 4.1 MW | 2002 | Operating |
| 3 | Natural Gas Internal Combustion Engine | 4.1 MW | 4.1 MW | 2002 | Operating |
| 4 | Natural Gas Internal Combustion Engine | 4.1 MW | 4.1 MW | 2002 | Operating |
| 5 | Natural Gas Internal Combustion Engine | 4.1 MW | 4.1 MW | 2002 | Operating |
| 6 | Natural Gas Internal Combustion Engine | 4.1 MW | 4.1 MW | 2002 | 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
| Main Canal Headworks | Hydro | 27 MW |
| Spokane Waste to Energy | Other | 26 MW |
| Twin Falls Hydro | Hydro | 24 MW |
| Electron | Hydro | 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 Washington power plants · What Washington actually generates