Hancock Creek Hydroelectric Project
Hydro power plant · King County, Washington
Nameplate capacity
6.0 MW
Rank in Washington
#109
of 139 plants
In service since
2018
February 2018
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- PUD No 1 of Snohomish County
- County
- King County
- Generating units
- 1
- Share of state capacity
- 0.02%
- Rank among hydro plants in Washington
- #57 of 73
- EIA plant code
- 60517
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| HY1 | Conventional Hydroelectric | 6.0 MW | 7.0 MW | 2018 | 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
| Calligan Creek Hydroelectric Project | Hydro | 6.0 MW |
| Coastal Energy Project | Wind | 6.0 MW |
| Cedar Hills | Other | 5.4 MW |
| Camas Solar Project | Solar | 5.0 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 6.0 MW solar plant and a 6.0 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