This tool calculates savings for wind turbines, hydroelectricity and micro combined heat and power systems. If you’re thinking of installing solar electricity panels, click on the image on the right to go to our Solar Energy Calculator.
Start by entering the details of your technology then use the investment section to see how the cash can repay a loan for installation costs, and even potentially make you a profit. To make the most of your investment, don't forget to make sure your home is as energy efficient as possible.
Please note that this tool does not cover Northern Ireland, Isle of Man or the Channel Islands.
The tool does not include the following:
• Fuel price increases over time
• Inflation (though FITs are index linked)
• Net present value or discounting
Electricity price for import is taken as 15.32p/kWh. Tariffs are valid for systems with eligibility dates falling within either 1 April 2012 – 30 November 2012 and 1 December 2012 – 31 March 2014. The exception is hydro which may operate on a tariff date for preliminary accreditation.
Tax is not included in the calculations. FIT income is not taxable for domestic installations.
For assumptions around the wind speed data base please see here http://www.energysavingtrust.org.uk/windspeedtool.
Annual output figures for different turbine sizes are based on the performance of typical machines. Actual performance of particular products will vary.
Fuel bill savings have been limited to £500 per year to prevent excessive savings projections for large systems.
Current tariff levels of most significance to householders for systems with an eligibility date of 1 December 2012 - 31 March 2014:
|Wind up to 1.5 kW||21.65 p/kWh|
|Wind 1.5 to 15 kW||21.65 p/kWh|
|Hydro up to 15 kW||21.65 p/kWh|
|Micro CHP up to 2 kWe||12.89 p/kWh|
|Export tariff (all technologies)||4.64 p/kWh|
Tariff lifetimes are 20 years for wind and hydro, 10 years for microCHP.
Last updated: April 2013