Company seeks permit for 400-MW pumped storage project in Idaho

Cat Creek Energy LLC applied Dec. 12 at the Federal Energy Regulatory Commission for a three-year preliminary permit so it can study the feasibility, without fear of competing proposals, for a 400-MW pumped storage hydro project in Elmore County, Idaho.

The Cat Creek Energy Generation Facility would be located on the Anderson Ranch Reservoir, which is an impoundment of the Bureau of Reclamation’s Anderson Ranch Dam. For this project, a new earthen dam would be constructed next to the reservoir to create an upper impoundment for the pumped storage facility. A 400-MW powerhouse would be construction below the new earthen dam to generate power from the release of water from the new upper reservoir to the existing lower one.

The project would need 10.3 miles of new 230-kV transmission line to connect to the Bonneville Power Administration grid. Supplemental power from wind and/or solar might be used to generate electricity for the pumping operations, the application noted.

A project contact is: James Carkulis, Cat Creek Energy LLC, 406-204-2321,

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.