Current system
See: Generation for more details of the current generation systems
Pyramid creek hydroelectric project
Present value of capital cost: $6,484,913
Lifetime energy cost savings: $10,782,974
Net lifetime savings: $4,298,061
Benefit-cost ratio: 1.7
Proposed nameplate capacity: 600 kW
Expected yearly generation: 2,570,033 kWh/year
Phase: Feasibility
Upfront capital cost: $6,602,174
Estimated hydro penetration level: 5.36%
source: link
Unalaska water treatment plant inline micro turbines
Present value of capital cost: $1,316,200
Lifetime energy cost savings: $1,010,286
Net lifetime savings: $-305,914
Benefit-cost ratio: 0.8
Proposed nameplate capacity: 64 kW
Expected yearly generation: 280,000 kWh/year
Phase: Feasibility
Upfront capital cost: $1,340,000
Estimated hydro penetration level: 0.58%
source: link
Unalaska (shaishnikof river)
Present value of capital cost: $19,928,269
Lifetime energy cost savings: $9,808,472
Net lifetime savings: $-10,119,796
Benefit-cost ratio: 0.5
Proposed nameplate capacity: 700 kW
Expected yearly generation: 3,114,000 kWh/year
Phase: Reconnaissance
Upfront capital cost: $20,288,616
Estimated hydro penetration level: 6.49%
source: link