Some domestic wind turbines work miracles, but others are rather pathetic. So why such a huge difference?

The answer is somewhat technical; the power generated is proportional to the wind speed cubed.

This video below helps to explain this phenomenon in an entertaining little story about an artist who tried to make a wind powered sign by the seaside. I don’t mean to put you off with this post, but rather to make sure you understand how to get the most out of your turbine should you install one.

For those who prefer the text version, click below:-

http://www.timhunkin.com/a125_arch-windpower.htm

This story reminded me of a nursery rhyme:-

There was a little girl,
    Who had a little curl,
Right in the middle of her forehead.
    When she was good,
    She was very good indeed,
But when she was bad she was horrid.

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