Black Creek
Hydro power plant · King County, Washington
Nameplate capacity
3.7 MW
Rank in Washington
#121
of 139 plants
In service since
1994
February 1994
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Black Creek Hydro Inc
- County
- King County
- Generating units
- 1
- Share of state capacity
- 0.01%
- Rank among hydro plants in Washington
- #59 of 73
- EIA plant code
- 54860
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN1 | Conventional Hydroelectric | 3.7 MW | 3.7 MW | 1994 | 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
| Horn Rapids Solar, Storage and Training | Solar | 4.2 MW |
| Grimes Way | Other | 4.0 MW |
| Crystal Mountain | Other | 2.7 MW |
| Drop 2 (WA) | Hydro | 2.5 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 3.7 MW solar plant and a 3.7 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