Oh, this is good! A company that mainly develops unmanned aircraft has turned its skills to making rooftop wind turbines. Small and light (no price yet so I don’t know if it’s cheap) and mounted on the building parapet - to make best use of the structure’s aerodynamic properties - it requires only 3.1m/s of wind-speed to work. That’s a huge drop from the 12m/s average for larger windmills.

Full article :: EcoGeek at Wired NextFest

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• 2006.03.31 : Greenwashing
• 2006.03.31 : Is Bamboo always a green material?
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• 2004.09.09 : Construction begins at Khairne [2P]