The Hydro and Wind Company Securing a clean energy future, profitably

What would the return on investment be from a farm wind turbine?

Using all of the various wind turbine revenue, project development and operating cost estimates, and assuming a design life of 20 years for a good quality modern wind turbine, the following table of return on investment ( Internal Rates of Return – IRRs) can be constructed for a range of turbines installed on a range of sites with annual mean wind speeds ranging from 5 to 9 m/s. This assumes all energy is exported to the electricty grid.

Maximum Power Output Example Turbines IRR’s for sites with for the following annual average wind speeds:
5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0
50 kW Northern Powe NP50 0% 2% 3% 4% 5% 6% n/a n/a n/a
100 kW Norvento nED-100 -4% -1% 1% 3% 4% 6% n/a n/a n/a
225 kW Endurance X-35 -2% 0% 2% 4% 5% 6% n/a n/a n/a
900 kW EWT DW61 2% 5% 7% 9% 11% 13% n/a n/a n/a
1.5 MW ENO 82 3% 5% 7% 10% 11% 13% 15% 16% n/a
3 MW Enercon E82 -2% 0% 3% 5% 7% 8% 10% 12% 13%

The return on investment can be grately increased if energy is used onsite. As an example the following table of return on investment ( Internal Rates of Return – IRRs) for a range of turbines installed on a range of sites with annual mean wind speeds ranging from 5 to 9 m/s. This assumes all energy is used on site.

Maximum Power Output Example Turbines IRR’s for sites with for the following annual average wind speeds:
5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0
50 kW Northern Powe NP50 2% 3% 5% 6% 7% 8% n/a n/a n/a
100 kW Norvento nED-100 0% 3% 5% 7% 9% 10% n/a n/a n/a
225 kW Endurance X-35 3% 6% 9% 11% 13% 15% n/a n/a n/a
900 kW EWT DW61 10% 14% 17% 20% 23% 26% n/a n/a n/a
1.5 MW ENO 82 10% 13% 16% 19% 22% 25% 27% 30% n/a
3 MW Enercon E82 10% 14% 18% 22% 26% 30% 34% 37% 41%

The figures are based on the last page update of 11th November 2016.

Clearly the potential return on investment is very good especially if energy can be used on site, but always remember that wind projects can take two to three years to deliver and that there is no guarantee that a project will succeed until planning consent has been obtained.

The first step for any wind project is a good quality wind feasibility study which will analyse everything in detail, identify any potential project risks and recommend the best way to proceed with the project.

 

Back to Windpower Learning Centre

Want to install a wind turbine?

If you are in the UK then take our Wind Site Self-Assessment - Step 1 of our modular Windpower Feasibility Study. It takes about 20 minutes to work through the basic checks to see if your site might be suitable, including:

  • Estimating wind speed
  • Checking proximity of nearby properties
  • Checking site access and approach roads
  • Investigating connection with the grid

If you are in the Republic of Ireland, or overseas, the first step is to consider our modular Windpower Feasibility Study, so please Contact us to discuss your site further.

Start the process here: Take the Wind Site Self-Assessment