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DIY Scalable Vertical Axis Wind Turbine
In this project, you will see how to build a small DIY VAWT, Vertical Axis Wind Turbine. The project I am sharing wont get you much over 50 watts of production, though it would be fairly simple to double the size of the blade area to increase power.
Whats good about this design is it has a low noise level. It can not be heard from 20m away. The average noise is lower than 45dB (A) in 8m/s wind speed. It is very suitable for the roof top mount in school, supermarket, park and other urban area.
Now its winter and the sun is not going to be so reliable this is the best winter alternate energy source. Read the comments on the article as they always give extra tips and advice.