The Calligan Creek Hydroelectric Project is a 6 MWe Pelton wheel run-of-the-river hydroelectric power station in Western Washington. It is operated by the Snohomish County Public Utility District on a tributary of the Snoqualmie River in King County, Washington, approximately 30 miles (48 km) east of Seattle. The power station has been operational since February 2018.[1][2] As of year-end 2024, the project produces 17,156 MWh of power per year.[3]
Construction involved building a 45-foot (14 m) wide, 8-foot (2.4 m) tall weir for the water not diverted through the turbine to flow over; a fish ladder; a 1.2-mile (1.9 km) penstock; a powerhouse; and 2.5 miles (4.0 km) of transmission line to interconnect with the grid.[4]
See also
editReferences
edit- ↑ "Calligan Creek Hydro Project". Snohomish County Public Utility District. Retrieved February 3, 2026.
- ↑ Giordano, Lizz (June 2, 2018). "PUD switches on two new hydro projects near Snoqualmie". The Everett Herald. Retrieved February 3, 2026.
- ↑ "2024: EIA-923". Form EIA-923 detailed data with previous form data. U.S. Energy Information Administration. Retrieved 21 March 2026.
- ↑ Rocío Uría-Martínez; Megan M. Johnson; Rui Shan (January 2021). "U.S. Hydropower Market Report" (PDF). United States Department of Energy Water Power Technologies Office. p. 35. DOE/EE-2088. Retrieved February 3, 2026.
Further reading
edit- Harrison, John (October 12, 2018). "Small Hydro Plants Boost Snohomish PUD's Energy Supply". Official website. Northwest Power and Conservation Council.
47°36′23″N 121°42′37″W / 47.6065°N 121.7104°W
- "Calligan Creek Project, Calligan Creek, Washington (license summary)". Official website. Hydropower Reform Coalition. March 1, 2020.
This article incorporates public domain material from Water Power Technologies Office (PDF). United States Department of Energy.
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