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CHINA TESTS WORLD’S FIRST MEGAWATT ‘WINDMILL’ AIRSHIP China is preparing flight tests for the S1500, the world’s first megawatt-level airborne wind turbine. Built by SAWES Energy with Tsinghua University, the helium-lifted airship carries carbon-fiber micro-generators 4,900 feet above ground, where winds blow three times faster than at land level. Its 1MW capacity matches a 328-foot turbine, while weighing under one ton. Power is sent to the ground via cable. Engineers say the design could deliver energy to remote regions and remain operational for 25 years. Source: Interesting Engineering