Generate electricity at home with small-scale wind turbines
Wind turbines harness the power of the wind and use it to generate electricity.
Wind turbines use large blades to catch the wind. When the wind blows, the blades are forced round, driving a turbine which generates electricity. The stronger the wind, the more electricity produced.
There are two types of domestic-sized wind turbine:
The cost of a system will depend on the size and the mounting method. Building-mounted turbines cost less to install than pole-mounted ones, but they tend to be less efficient.
For equipment and installation, with VAT at 5 per cent:
Building-mounted turbines tend to be less efficient than pole-mounted ones. A well-sited 6kW turbine can generate around 9,000kWh a year. This can save around 2.5 tonnes of carbon dioxide a year.
Wind turbines were eligible for Feed-In Tariff payments. The FITs scheme closed to new applications on 31 March 2019. You may now be able to claim Smart Export Guarantee (SEG) payments instead for any surplus electricity you export to the grid. For more information about these schemes please visit our Smart Export Guarantee and Feed-In Tariffs page.
A well sited 6kW pole mounted turbine could typically save you around £250 a year on electricity bills and earn about £440 per year in SEG payments.
Maintenance checks are necessary every few years, and will generally cost around £100 to £200 per year depending on turbine size.
A well-maintained turbine should last more than 20 years, but you may need to replace the inverter at some stage during this time, at a cost of £1,000 to £2,000 for a large system.
For off-grid systems, batteries will also need replacing, typically every 6 to 10 years. The cost of replacing batteries varies depending on the design and scale of the system.
Any back-up generator will also have its own fuel and maintenance costs.
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