Washington district seeks licenses for two 6-MW hydro projects

The Public Utility District No. 1 of Snohomish County in Washington is seeking a license for a new, 6-MW hydroelectric project, said the Federal Energy Regulatory Commission in a notice to be published in the Aug. 23 Federal Register.

The project would be on the Calligan Creek, near the town of North Bend, King County, Wash. The proposed project would not occupy any federal lands.

The Calligan Creek Hydroelectric Project would consist of the following new facilities: an approximately 110-foot-long, 14-foot-high diversion with a 45-foot-long, 8-foot-high spillway; a 1.04-acre-foot impoundment; a 200-square-foot fish screen with 0.125-inch-wide openings; a 1.20-mile-long, 41-inch-diameter penstock; a powerhouse containing a single 6-MW two-jet horizontal-shaft Pelton turbine/generator; a 135-foot-long rip-rap-lined tailrace channel discharging into Calligan Creek; 300 feet of access roads in addition to existing logging roads; and a 2.5-mile-long, 34.5-kV buried transmission line connecting to the existing Black Creek Hydroelectric Project (P-6221) switching vault.

The project is estimated to provide 20.7 gigawatt-hours annually.

Also, FERC is putting out for notice in the Aug. 23 Federal Register a license application from Public Utility District No. 1 of Snohomish County for the Hancock Creek Hydroelectric Project, located on Hancock Creek, near the town of North Bend, King County, Wash. The proposed project would not occupy any federal lands.

This project will consist of the following new facilities: an approximately 100-foot-long, 12-foot-high diversion with a 45-foot-long, 6-foothigh spillway; a 0.85-acre-foot impoundment; a 200-square-foot fish screen with 0.125-inch-wide openings ; a 1.48-mile-long, 40-inch-diameter penstock; a powerhouse containing a single 6-MW two-jet horizontal-shaft Pelton turbine generator; a 12-foot-wide, approximately 100-foot-long rip-rap-lined tailrace channel discharging into Hancock Creek; 1,200 feet of access roads in addition to existing logging roads; and a 0.3-mile-long, 34.5-kV buried transmission line connecting to the existing Black Creek Hydroelectric Project (P-6221) switching vault.

The project is estimated to provide 21.9 gigawatt-hours annually.

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.