Upriver Dam Hydro Plant
Hydro power plant · Spokane County, Washington
Nameplate capacity
18 MW
Rank in Washington
#89
of 139 plants
In service since
1936
January 1936
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- City of Spokane
- County
- Spokane County
- Generating units
- 5
- Share of state capacity
- 0.06%
- Rank among hydro plants in Washington
- #42 of 73
- EIA plant code
- 50380
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN4 | Conventional Hydroelectric | 5.8 MW | 1.5 MW | 1984 | Operating |
| GEN5 | Conventional Hydroelectric | 5.8 MW | 1.5 MW | 1984 | Operating |
| GEN1 | Conventional Hydroelectric | 2.0 MW | 0.5 MW | 1936 | Operating |
| GEN2 | Conventional Hydroelectric | 2.0 MW | 0.5 MW | 1936 | Operating |
| GEN3 | Conventional Hydroelectric | 2.0 MW | 0.5 MW | 1936 | 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
| Adams Nielson Solar | Solar | 19 MW |
| Sierra Pacific Aberdeen | Other | 18 MW |
| South Fork Tolt | Hydro | 17 MW |
| Cosmo Specialty Fibers Plant | Other | 15 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 18 MW solar plant and a 18 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