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Small Wind Feasibility Calculator

Evaluate ROI for a residential or small commercial wind turbine.

InputsLoading live data…

$
$
kW
m/s
$/kWh
$
%

Results

Payback Period

32.2 years

Annual Production

5,475 kWh

≈ 6 months of home electricity

Net Annual Savings$621.00
20-Year ROI-38%
LCOE$0.22/kWh
How to Use This Calculator
  1. Enter the average annual wind speed at your site in mph or m/s.
  2. Set the turbine hub height in feet.
  3. Input the turbine rated power in kW.
  4. Enter your annual electricity consumption and local utility rate.
  5. Review the annual energy production estimate and simple payback period.

How the result changes with Average Wind Speed

Average Wind SpeedPayback PeriodAnnual Production
3.3155.6 years2,190 kWh
6.5520.7 years7,775 kWh
109.5 years15,330 kWh
149.5 years15,330 kWh

What each input means

Turbine Cost
Cost of the wind turbine unit.
Installation Cost
Installation, permitting, and foundation costs.
Rated Power
Turbine rated power output.
Average Wind Speed
Average annual wind speed at your site.
Electricity Rate
Your utility electricity rate.
Annual Maintenance
Estimated annual maintenance cost.
Incentive/Rebate
Percentage of cost covered by incentives.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Turbine Cost = 15000, Installation Cost = 5000, Rated Power = 5, Average Wind Speed = 5.5 = 7 input(s) provided
  2. Calculate Payback Period
    Payback Period
    32.2 = 32.2
  3. Calculate Annual Production
    Annual Production
    5475 = 5475
  4. Calculate Net Annual Savings
    Net Annual Savings
    621 = $621
  5. Calculate 20-Year ROI
    20-Year ROI
    -38 = -38

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