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Am I right in assuming this is a bad deal
1 KW an hour for £1500??
TIA
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It depends how you judge a bad deal. Do you want to make a statement to your neighbours, or get yourself some degree of self sufficiency? How do you judge future energy prices? If you assume no change the economics are very different from if you assume the same percentage price rises in electricity that we have seen for the last two years continuing for the next twenty years. Do you live in a windy spot? Is your house wall strong enough? Rooftop windturbines suffer from the effects of turbulence so will not perform quite as well as a pole monted one of the same size away from buildings.
If you just want to know the most wind-electricity efficient way of spending your money you'd probably be better off buying your power from Ecotricity. They spend their profits on more big turbines. The physics (power square laws and such like) mean that big turbines will always give you more electricity for your money than small ones.
If you don't mind something a bit rough round the edges, investigate Navitron. The Chinese are getting clever at windpower.
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This seems a riduculusly low payback period - it's about half my electric (so £900) so it's paid for in less than 2 years
It must not work at 1KW/hr or I must have worked out my consuption wrong
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I m afraid that you may have assumed that the wind blows all the time hard enough! When id does not.
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My dad (why would he know??) recons the wind averages about 10mph round our way which would give a pay back in 3 yrs (approx)
I wonder if they keep avaerage wind speeds on-line somewhere?
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This map
http://www.bwea.com/images/misc/noabl_c.gif
estimates my mean wind speed at between 5 & 7 mph
"mean" isn't "average" is it?
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