On 07 Aug 2008 07:55:22 GMT, Andrew Gabriel wrote:

You need very large ones to have any hope at all of producing
viable energy.

In the context of domestic windmills can you define "very large".

B&Q were promoting them heavily last year around here - in an urban
environment. Bloke up the road fitted one, three weeks later it came
back down.

Gust of wind?

B-) Be nice to know the real reason. 3 weeks is not really long enough to
to find out the control unit consumed more power than it was generating.
Conducted noise into the building?

There is a one not far from here that has been up quite a while, mind you
it's in an exposed and windy position so may actually produce power.
Having said that of the half dozen or so turbines that have appeared in
the last year or so this is the only "B&Q type" all the others are free
standing column mounted jobbies that look very much like Proven Energy
2.5kW jobbies with rotors 3.5m in dia.

--
Cheers
Dave.