10 years ago
1
Silent rooftop wind turbines could generate half of a household's energy needs
Small, vertical axis wind turbines are the right size for residential and urban areas, but so far, they have lived in the shadows of their larger, horizontal axis counterparts. The power output is significantly lower (although a study has suggested that for the space they take up, they're more efficient) and the noise they produce is louder than most homeowners can deal with.
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Sounds cool, wonder why their's is so much better though.