Wind turbines
Swept area
The FuturEnergy has a blade diameter of 1.80 metres. This means it has a swept area, or capture area of 2.55 square metres. The swept area is all important when comparing wind turbines, since it directly relates to the amount of passing wind energy the turbine blades can intercept.
FuturEnergy power output curve
The graph below shows the power produced (in watts) for the FuturEnergy at different wind speeds, based on data supplied by the manufacturer.

Whilst the above graph gives an indication of the instantaneous power you might expect from the
FuturEnergy turbine, working out annual power production is more complex.
The only way to know for sure is by measuring your wind speeds using an anemometer for a period of time and then working out what a generator like this would produce.
Luckily, we've invented something that makes this easy, called the
Power Predictor!

The FuturEnergy wind turbine in action
Decent length video showing a tower-mounted FuturEnergy 600W turbine on a battery charging set mounted on some lattice towers,
Power output
The cut in speed is about 3m/s.
Cost
£875.96 including VAT, plus £31.81 postage but this doesn't include the costs of the tower, or the installation, which will be extra. You'll also need to allow a few hundred pounds for the batteries, charging equipment, wires and other bits and bobs.
Our view
This seems like a great value deal, providing you are either able to do the DIY stuff, or find someone that can. It doesn't qualify for grant funding, but the idea is that the low price should stand on its own two feet without the grant assistance.
Blade diameter
1.80 metres
Rated output (W)
1000
UK grants available?
No
Warranty
The turbine comes with a two year guarantee against defective workmanship. This doesn't cover you if you damage it yourself by doing something daft.
Voltages
12 Volt • 24 Volt • 48 Volt
Manufacturer
FuturEnergy Ltd
The data you see in the screenshot is taken from a Power Predictor user in Orkney. As you can see during the month they collected data their wind hit speeds over 10m/s, hence the high annual kWh prediction.