Rooftop and backyard windpower page

4th December 2006



Rooftop wind turbines are a load of nonsense

Anyone who has experience in the industry knows that wind turbines require substantial quantities of wind to produce power.  There may be strong gusts and turbulence around buildings but only a small amount of power  is available in such locations.

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
http://windsave.com/
http://www.d400.co.uk/
http://www.buildingmountedturbines.com/
http://www.gual-industrie.com/

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 the use of very tall towers.  The tower is a bigger cost than the turbine.  But it pays for itself easily.

See the recent article in the Observer newspaper

wiNDSAVE

swiftOther sites about rooftop wind turbines:

  proven

<>Rooftop windspeed measurements in the city - there is not as much wind as they think...


Actual measurements here.
Paul Gipe explains what it takes to run a household



Windsurvey.co.uk
 
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.
Rooftop over the top in Britain
Paul Gipe lets rip at the entrepreneurs.



 E-mail me at: hugh@scoraigwind.co.uk