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JBloodthorn t1_it4b7jj wrote

Reply to comment by Gnarlodious in Aeromine says they have solved many of the problems that have long made domestic rooftop wind power compare poorly to solar panels. They claim their "motionless" rooftop wind generators deliver up to 50% more energy than a solar array of the same price while taking up just 10% of the roof space. by lughnasadh

The blades at the top look like a standard Savonius Turbine, but they are stationary.

The actual turbine is below them, and rotates around the same axis that the air is moving.

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