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John Weston

In article ,
says...

Output varies with the square of the diameter. Three times as much is
what you get with the larger unit. To digress a bit the state of Iowa
gets five percent on its juice from wind, compared to one per cent
nationally. The common 2 MW 150 foot rotor ones would equal a thirty
barrel a day oil well. That is if the wind always blew. Chicago has
the nerve to call itself the windy city, but Des Moines is windier.

Ah but - the OP is most likely on a short mast, down amongst the surface
turbulance - He's on a canal mooring somewhere and can't install
anything substantial. Yes, he'll see increased output but will it ever
recover it's increased cost of ownership? Typical boat installations
can work since they are providing power replacement for the relatively
small loads of nav lights and the like - but he's on a live-aboard...
As with any such installation, one has to do the power usage profile
calculations to see what is needed and look for the source that will
more than meet the need - and divide the marketing data by two to get
more realistic figures. As you may gather - I use motor generated power
on my sailing boat.

Whilst the UK has a good wind profile when compared to other European
countries, the similar large wind generators run by the electricity
supply companies are nowhere meeting their planned prerformance. The UK
will not meet it's 20% renewables commitment with the current solutions
so are in the throes of looking for alternatives. Practically all the
private rooftop installations to-date are so under-performing most have
been removed as not even generating enough power to cover that used by
the controlling electronics required for connection the the user's mains
supply.

--
John W
To mail me replace the obvious with co.uk twice

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