Wind turbines have become airborne! An enormous helium-filled wind turbine will soon float over the city of Fairbanks, Alaska to produce enough electricity for more than a dozen families living off the grid. Designed and built by MIT startup Altaeros Energies, the turbine known as BAT-Buoyant Airborne Turbine will hover at an altitude of 1,000 feet for 18 months, catching air currents that are five to eight times more powerful than winds on the ground.
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