Italy
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 o
f Seattle. The power station has been operational since February 2018. As of year-end 2024, the project produces 17,156 MWh of power per year. 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.
Listen to the audio guide for Calligan Creek Hydroelectric Project Free on WIP — starts by itself when you arrive, even with the screen off