Johnathans onto something.
According to Monbiot those small home-use windmill are typically 1.75m
in diameter and this will typically only provide about 5% of your
energy needs. To get to 50% the thing will have to be 4meters in
diameter and 11 meters in the air, and if you put on your roof, it'll
probably rip it off!
http://www.monbiot.com/archives/2006/10/06/small-is-useless/
Infact, Monbiot isn't so keen on "home-made" energy, he thinks it's a
bit of a sham so middle-class people can feel all good about doing
something for climate change, when in fact they're not.
It's a good article, worth reading!
N
On 10/30/06, Jonathan Ward <[log in to unmask]> wrote:
> i have wondered whether we might see large retailers selling people, and
> convincing people that they need, small scale wind turbines and other
> measures which are not the most effective for either energy production or
> energy saving? a mass market of low cost measures which might ulitmately be
> ineffective.
>
> doesn't a personal wind turbine need a span of 4m to provide you with enough
> electricity for your home (wind strength and consistency permitting)?
> obviously smaller ones might make a contribution, but scale is a key issue.
>
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