A cheap way to harness energy from flowing water

FastCoExist reports on an inexpensive rotor that an generate power from a variety of flowing water sources, such as rivers or streams. Created by a German company, the Mobile Hydro is a portable device based on a rubber ring and three rotors and whilst it won’t generate huge amounts of power it could provide a constant source for farmers and villagers off of the grid.

Source: FastCoExist

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