FERC seeks input on Elfin Cove permit app for Alaska hydro project

The Federal Energy Regulatory Commission issued a July 14 notice about a July 1 application from the Community of Elfin Cove d/b/a Elfin Cove Utility Commission for a successive preliminary permit to continue to study the feasibility of the Crooked Creek and Jim’s Lake Hydroelectric Project.

The project would be located on Crooked Creek and Jim’s Lake, 70 miles west of Juneau, in the unincorporated Sitka Recording District, Alaska. The sole purpose of a preliminary permit, if issued, is to grant the permit holder priority to file a license application during the permit term.

The proposed project would consist of two developments, the Upper System and the Lower System.

  • The Upper System would consist of: a 20-foot-long, 4-foot-wide, 4-foot-tall diversion structure to divert up to 5 cubic feet per second (cfs) from Crooked Creek; a 1,200-foot-long, 1-foot-diameter buried penstock; a 20-foot-long, 20-foot-wide powerhouse containing a 35-kW crossflow turbine/generator; and a 50-foot-long, 8-foot-wide, 3-foot-deep cobble-lined tailrace discharging flows into Jim’s Lake.
  • The Lower System would consist of: a 220-foot-long, 20-foot-high rock-fill embankment dam and intake at the outlet to Jim’s Lake; a 2,050-foot-long, 1.2-foot-diameter buried penstock; a 24-foot-long, 24-foot-wide powerhouse containing a 105-kW Pelton turbine/generator; and a 150-foot-long, 8-foot-wide, 3-foot-deep cobble-lined tailrace discharging flows into Port Althorp.

The 300-foot-long, 7.2/12.47 kV buried transmission line from the upper powerhouse would converge with the 2,800-foot-long, 7.2/12.47 kV buried transmission line from the lower powerhouse into a single 8,400-foot-long, 7.2/12.47 kV buried transmission line extending to Elfin Cove’s existing 7.2/12.47-kV distribution network. The estimated annual generation of the project would be 655.5 megawatt-hours.

The project would be partially located on 60 acres of federal lands managed by the U.S. Forest Service in the Tongass National Forest.

The applicant contact is: Joel Groves, Polarconsult Alaska Inc., 1503 West 33rd Avenue, Number 310, Anchorage, AK 99503, phone: (907) 258-2420 x 204.

The deadline for filing comments, motions to intervene, competing applications (without notices of intent), or notices of intent to file competing applications is 60 days from the issuance of this July 14 notice.

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.