Return on investment chart

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System specs Fixed system Tracker system Roof mount system
Panels 48 - 230 watt panels 48 - 230 watt panels 48 - 230 watt panels
Inverter 2 - 4800 watt CSI Inverters 2 - 4800 watt CSI Inverters 2 - 4800 watt CSI Inverters
Mounting System Ground Mount Frame 2-5000 HD Degertraker Wind -170 km/h Flush Roof Mount
System DC rating (kW) 11.04 11.04 11.04
System AC rating (kW) 9.6 9.6 9.6
Derate Factor (percent of DC rating) 0.84 0.84 0.82
       
Degrees of Angle 35   17
Hours of Sun Average 4.1 5.8 3.9
       
Cost of System $73,000 $90,500 $69,000
Cost per dc watt of system $6.61 $8.20 $6.25
Proposed Price offered by OPA $0.588 $0.588 $0.802
       
Expected Annual AC output 13878 19632 12887
Annual Gross Revenue $8,160 $11,544 $10,335
Annual Exp. (Insurance, maintenance, Monitoring) $400 $600 $400
Annual Net Revenue $7,760 $10,944 $9,935
       
1st year Return On Investment 11.18% 12.76% 14.98%
       
20 year Average Annual Gross Income $7,385 $10,447 $9,353
20 year Return on Investment 10.12% 11.54% 13.56%
Payback 9.88 8.66 7.38
       
Warranty on Inverters (years) 10 10 10
Warranty on Panels (years) 25 25 25
Warranty on Tracker (years)   20