A windmill for home power is a great method of lowering your carbon footprint and saving you cash, once it has paid for itself.
However, there are certain procedures to be followed to ensure your house is in a viable windy location, without high obstructions nearby. Planning permission is usually required and a reputable firm should be selected to carry out a wind survey and subsequent windmill installation.
A ball park figure for the cost of supply and installation of a windmill for home power is around £11000, ( $17794), but once installed and operating a government grant may be available of up to £2500, ($4044) provided the windmill is supplied and installed by a listed approved renewable energy company.
A 2kW windmill described in the article can save up to £380 ($615) a year on electricity use from the grid.
Calculating the Payback Period
With a government grant, the payback period, provided it is producing the rated power will be
11000-2500/380 = 20 years. This is much the same as double glazing payback period and the anticipated life of the equipment.
However, prices of windmills are falling as energy prices rise and a windmill installation project can save 2.6 tons of CO2 per year. You also will have the satisfaction of sitting, having a drink in your garden, watching the blades whirring round, producing your electricity.
There are cheaper, smaller wind turbines known as micro wind turbines which bolt onto the gable end of the house. These are rated at up to 1kW, but so far, field trials have not been promising, the output being nowhere near the manufacturers’ claims. This is mainly due to wind turbulence or from the turbine being sheltered from the wind by neighboring high buildings.
They are also reported to be noisy; vibration being prevalent and structural damage to the house a possibility.
Notwithstanding this, some people in the right location using the most modern micro-power models have had good, sustained power outputs.
So we are left with my 2kW windmill, sited in the garden, well away from any high protuberances, do you think you can benefit from installing a home windmill for power?