AK

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Summary

  • P-14514
  • Crooked Creek and Jim’s Lake
  • Alaska
  • AK
  • 1.60 MW
  • Proposed
  • Conventional

Permit

  • Download Permit
  • 07-19-2013
  • 06-30-2016
  • Community of Elfin Cove

Description

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

  1. The Upper System would consist of:  (1) a 40-foot-long, 4-foot-wide, 4-foot-tall diversion structure to divert up to 5 cubic feet per second (cfs) from Crooked Creek; (2) a 1,450-foot-long, 1-foot-diameter penstock extending from the diversion structure and the powerhouse; (3) a powerhouse containing a 35-kilowatt (kW) power recovery turbine; (4) a 25-foot-long, 8-foot-wide, 3-foot-deep cobble-lined tailrace discharging flows into Jim’s Lake; (5) an underground 7,300-foot-long, 7.2/12.47-kilovolt (kV) transmission line extending from both powerhouses to Elfin Cove’s existing 7.2/12.47-kV transmission line; and (6) appurtenant facilities.
  2. The Lower System would consist of:  (1) a siphon intake located in Jim’s Lake to divert 7 cfs; (2) a 1,800-foot-long, 1.2-foot-diameter penstock extending from the siphon intake and the powerhouse; (3) a powerhouse containing a 125-kW Pelton or impulse turbine; (4) a 150-foot-long, 8-foot-wide, 3-foot-deep cobble-lined tailrace discharging flows into Port Althorp; and (5) appurtenant facilities.  

The estimated annual generation of the project would be 672.7 gigawatt-hours

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Summary

  • P-14360
  • Swan Lake and Cascade Creek
  • Alaska
  • AK
  • 70.00 MW
  • Proposed

Permit

  • Download Permit
  • 08-29-2013
  • 07-31-2016
  • Hydro Development, LLC

Description

The Cascade Creek project would consist of

  • 12,700-foot-long penstock to 3,300-foot-long tunnel to 780-foot-long k;
  • 18.8 mile-long, 138 kV transmission;
  • No new road access.

The project would affect 2.5 miles of stream/river and 5.1 miles of shoreline.

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Summary

  • P-13605
  • Icy Passage
  • Alaska
  • AK

Description

The preliminary permit for this proposed tidal energy project was terminated by FERC on February 12, 2013.

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Summary

  • P-14480
  • Sheep Cr
  • Alaska
  • AK
  • 3.30 MW
  • Proposed
  • Conventional

Permit

  • Download Permit
  • 04-30-2013
  • 03-31-2016
  • Alaska Electric Light & Power

Description

The proposed project would consist of:
(1) a 10-foot-high, 75-foot-long concrete diversion dam at an elevation of 620 feet above mean sea level; 
(2) an overflow spillway;
(3) a 4,750-foot-long, 36-inch-diameter penstock;
(4) a powerhouse containing a single, 3.3-megawatt generating unit;
(5) a tailrace that would discharge directly into Sheep Creek;
(6) a switchyard, located adjacent to the powerhouse, consisting of a single 3.5- megavolt-ampere transformer to adjust voltage to 23 kilovolts; and
(7) appurtenant facilities.
The project would generate an estimated average of 13,317 megawatt-hours annually.

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