Clark Canyon Hydro seeks preliminary permit on Montana project

Clark Canyon Hydro LLC applied April 20 at the Federal Energy Regulatory Commission for a preliminary permit, good for up to three years of project feasibility work, on the 4.7-MW Clark Canyon Dam Hydroelectric Project on the Beaverhead River in Montana.

The Flood Control Acts of 1944 and 1946 approved the construction of the Clark Canyon dam as part of the Reclamations Pick‐Sloan Missouri River Basin Program, East Bench Unit. It is an approximately 2,950-foot-long zoned, earth‐fill dam.

The proposed powerhouse will contain two vertical Francis-type turbine/generator units with a combined generating capacity of 4.7 MW. The powerhouse substation will be located northeast of the powerhouse (approximately 1,100 feet downstream of the powerhouse). The substation includes a 4.16 kV to 69 kV step-up transformer with switchgear on concrete pad foundations with containment and a grounding grid.

A new transmission line will run from the powerhouse substation approximately 7.9 miles to the Peterson Flat substation and will be adjacent to and within sections of the Highway 324 right-of-way. The new line will consist of a single pole at a voltage of 69 kV with an average span distance of 428 feet, and 13 poles per mile on a proposed 80-foot corridor.

A developer contact is: Alina Osorio, Aquila Infrastructure Management Inc., 55 University Avenue, Suite 201, Toronto, Ontario M5J 2H7, Phone: 416-340-1937,

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.