The Federal Energy Regulatory Commission on April 11 approved another preliminary permit for Juneau Hydropower Inc. on a 19.8-MW hydro project in Alaska.
In December 2012, Juneau Hydropower filed an application for a successive preliminary permit, proposing to study the feasibility of the Sweetheart Lake Hydroelectric Project No. 13563, located on the Lower Sweetheart Lake and Sweetheart Creek southeast of Juneau, Alaska.
The proposed project would include:
- a new 275-foot-long, 105-foot-high concrete and rock face dam, including project intake facilities and a 125-foot-wide overflow spillway, constructed at the natural outlet of Lower Sweetheart Lake;
- a new 500-foot-long, 10-foot-diameter stream diversion tunnel that would be converted to reservoir outlet works after project construction;
- a new 9,595-foot-long, 12-foot-diameter penstock diverting flow from the project intake to the powerhouse;
- a new powerhouse containing three new 6.6-MW Francis generating units having a total installed capacity of 19.8 MW;
- a new switchyard adjacent to the powerhouse; and
- a new 8.69-mile-long, 138-kV transmission line consisting of buried, submarine, and overhead segments.
The proposed project would have an average annual generation of 111 gigawatt-hours.
The applicant previously held a preliminary permit for this site under Project No. 13563-000. The company provided information to commission staff demonstrating that it is currently making progress with the analysis of the project’s feasibility, and towards the development of its proposed project. It is expected that during this three-year permit term, a development application will be prepared.