With the greatest respect to friends and colleagues and without
wishing in any way to engage in further or unnecessary polemics
- In my copy of the book "Wind-Energie" by Dipl. Engineer Albert
Betz, Gottingen 1926 - in my translation from German from the
very first page:

"The wind conditions are often very different between "places"
["Ort" => physical places or areas] and time".

I believe that there are sayings in English -
"Your conditions may vary"
"Courses for horses".

Likewise as is well known - there are increasing
planning-permission difficulties in erecting small-medium
wind turbines of between 80-500 kW in many countries.

Often those few remaining as f.ex. mentioned in my previous
comment are solely still standing in defiance of stromg
economic pressures to have them removed - with reference to
the so-called "greater productivity of the 2 MW units

[and over 20% of our yearly national consumption of electricty
comes from wind - of course during winter it is often 100%]

In our village on the windy Kattegat coast [5.8 m/s average
yearly wind speed] - there is as previously mentioned in
another posting- great interest for small/micro wind turbines
- able to contribute a reasonable portion of heat-input to
our hot-water systems during winter.

And yes - we all have "Pilkington energy-glas" windows and
house insulation and planted shelter-belt-hedges around our
houses.
And we also are thinking of group cooperative construction
of solar thermal units.
And we heat our houses with good efficient indoor wood-burning
stoves - and all use oil for hot water in winter.
[heating-oil at about - $ 1.2 USD/ltr - including CO2 tax]
And yes - we have also considered the bio-fuel diesel option
- which however has been posponed due to certain hardware
difficulties.