Upper Baker
Hydro power plant · Whatcom County, Washington
Nameplate capacity
105 MW
Rank in Washington
#52
of 139 plants
In service since
1959
January 1959
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Puget Sound Energy Inc
- County
- Whatcom County
- Generating units
- 2
- Share of state capacity
- 0.33%
- Rank among hydro plants in Washington
- #22 of 73
- EIA plant code
- 3861
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 52 MW | 52 MW | 1959 | Operating |
| 2 | Conventional Hydroelectric | 52 MW | 51 MW | 1959 | 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
| H M Jackson | Hydro | 112 MW |
| Palouse | Wind | 105 MW |
| Lower Baker | Hydro | 104 MW |
| Goodnoe Hills | Wind | 103 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 105 MW solar plant and a 105 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