There are a number of manufacturers of rooftop wind turbines. They have sprung up to meet popular demand. There is no evidence that their products can deliver what they claim. Here are some of the web sites.http://www.renewabledevices.com/swift/specification.htm
The manufacturers of rooftop wind turbines invariably make quite unrealistic claims, and present a very strong marketing rather than engineering image. They are always looking for very large numbers of sales before demonstrating the technology in a public way. They often play on public misconceptions of the nature of the wind by quoting high power outputs in absurdly windy conditions.
It is possible to use wind energy in sheltered locations by
of very tall towers. The tower is a bigger cost than the
But it pays for itself easily.
<>Rooftop windspeed measurements in the city - there is not as much wind as they think...
Actual measurements here.
Gipe explains what it takes to run a household
local wind survey equipment
If you're thinking about installing a small or medium-sized wind generator at your home or business, it makes sense to find out as much as possible about the wind conditions at the proposed generator site, so as to have some idea of how much power you can expect.
over the top in Britain
Paul Gipe lets rip at the entrepreneurs.