Current system
See: Generation for more details of the current generation systems
Adak hydroelectric project -- Mount Reed Creek
Present value of capital cost: $11,051,724
Lifetime energy cost savings: $11,407,983
Net lifetime savings: $356,259
Benefit-cost ratio: 1.0
Proposed nameplate capacity: 360 kW
Expected yearly generation: 1,985,257 kWh/year
Phase: Reconnaissance
Upfront capital cost: $11,251,564
Estimated hydro penetration level: 98.39%
source: link
Adak hydroelectric project -- Mount Moffet Creek
Present value of capital cost: $13,630,485
Lifetime energy cost savings: $14,309,669
Net lifetime savings: $679,184
Benefit-cost ratio: 1.0
Proposed nameplate capacity: 450 kW
Expected yearly generation: 2,481,571 kWh/year
Phase: Reconnaissance
Upfront capital cost: $13,876,955
Estimated hydro penetration level: 122.99%
source: link
Adak hydroelectric project -- Heart Lake
Present value of capital cost: $5,809,663
Lifetime energy cost savings: $6,027,137
Net lifetime savings: $217,475
Benefit-cost ratio: 1.0
Proposed nameplate capacity: 190 kW
Expected yearly generation: 1,047,774 kWh/year
Phase: Reconnaissance
Upfront capital cost: $5,914,714
Estimated hydro penetration level: 51.93%
source: link
Adak hydroelectric project -- Lake Betty
Present value of capital cost: $6,917,495
Lifetime energy cost savings: $6,527,670
Net lifetime savings: $-389,826
Benefit-cost ratio: 0.9
Proposed nameplate capacity: 210 kW
Expected yearly generation: 1,158,066 kWh/year
Phase: Reconnaissance
Upfront capital cost: $7,042,579
Estimated hydro penetration level: 57.40%
source: link
Adak hydroelectric project -- Lake Bonnie Rose
Present value of capital cost: $7,314,252
Lifetime energy cost savings: $21,290,120
Net lifetime savings: $13,975,869
Benefit-cost ratio: 2.9
Proposed nameplate capacity: 450 kW
Expected yearly generation: 3,209,499 kWh/year
Phase: Reconnaissance
Upfront capital cost: $7,446,510
Estimated hydro penetration level: 159.07%
source: link
Adak hydroelectric project -- Lake DeMarie
Present value of capital cost: $4,597,220
Lifetime energy cost savings: $1,957,371
Net lifetime savings: $-2,639,849
Benefit-cost ratio: 0.4
Proposed nameplate capacity: 80 kW
Expected yearly generation: 441,168 kWh/year
Phase: Reconnaissance
Upfront capital cost: $4,680,348
Estimated hydro penetration level: 21.87%
source: link
Adak (unnamed stream, site #2) -- Unnamed Creek, 2
Present value of capital cost: $11,342,120
Lifetime energy cost savings: $9,051,241
Net lifetime savings: $-2,290,878
Benefit-cost ratio: 0.8
Proposed nameplate capacity: 303 kW
Expected yearly generation: 1,670,924 kWh/year
Phase: Reconnaissance
Upfront capital cost: $11,547,211
Estimated hydro penetration level: 82.81%
source: link
Adak (unnamed stream, site #1) -- Unnamed Creek, 1
Present value of capital cost: $8,709,938
Lifetime energy cost savings: $5,684,307
Net lifetime savings: $-3,025,631
Benefit-cost ratio: 0.7
Proposed nameplate capacity: 201 kW
Expected yearly generation: 1,108,435 kWh/year
Phase: Reconnaissance
Upfront capital cost: $8,867,433
Estimated hydro penetration level: 54.94%
source: link
Adak hydroelectric feasibility study phase ii--Option 1
Present value of capital cost: $7,857,911
Lifetime energy cost savings: $21,074,584
Net lifetime savings: $13,216,673
Benefit-cost ratio: 2.7
Proposed nameplate capacity: 440 kW
Expected yearly generation: 3,200,000 kWh/year
Phase: Feasibility
Upfront capital cost: $8,000,000
Estimated hydro penetration level: 158.60%
source: link