more realistic figures for feed-in household wind generation (uk)....



http://www.guardian.co.uk/environment/2008/jan/06/windpower.alternativeenergy
"Home wind turbines are significantly underperforming and in the worst
cases generating less than the electricity needed to power a single
lightbulb, according to the biggest study of its kind carried out in
Britain.

An interim report revealed that homeowners could be being misled by
the official figures for wind speeds because they are consistently
overestimating how much wind there is - sometimes finding that real
speeds are only one third of those forecast. In the worst case
scenario, the figures indicate that it would take more than 15 years
to generate enough 'clean' energy to compensate for the manufacture of
the turbine in the first place."
.....
"Encraft, based in Warwickshire, launched the trial in 2006 and is now
monitoring speeds and power generation at five rural, eight suburban
and 11 urban sites, including six on blocks of flats. Most trial sites
only began working last year, but the results of nearly 64,000
operating hours 'reasonably indicate' their performance, said Rhodes.

Results from 15 sites show only three generated more than 400
watt-hours of electricity a day; two at 875wh and the single site
which reached 1,790wh.

Windspeed indicators confirmed that the official data used to assess
how good a site is for a wind turbine are too high: wind speeds were
one third to two thirds of what was forecast, said Rhodes."

regards...

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