Our VAWT has been designed from the outset for low-cost production in the UK. 

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It has three untwisted blades, why?

Our method of blade production, is to use glass fibre polyester and a  pultrusion technique (google it). 

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It means we can produce, labour-free, hollow section blades at a rate of 25,000 sets a year at low cost. 

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There are many similar products on the market, however, many don't work and if they do, they are expensive and do not match their performance claims or customer expectations. 

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Google Search them out and add their dimensions to this tool:

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https://www.omnicalculator.com/ecology/wind-turbine

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Now repeat it for ours.

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Many of them say 10kW but this isn't right, they actually mean 10kWh of energy per day so 416W (and at a rated wind speed of 10 m/s or 19.5 mph in old money).  In the UK you are unlikely in average more than 5 m/s (10 mph) which is about 1/4 quarter of the power.  You can see what your average wind speed is using this excellent report from the BRE here.

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