Power competitors have generators kept on the ground, like KiteGen, Italy. The electricity is generated on the ground in the tether, utilising tension in the cable connected to the kite. See also List of airborne wind energy organizations References External links Official website Kites Airborne wind power Wind turbine manufacturers Companies based in Alameda, California Technology companies based in the San Francisco Bay Area American companies established in 2006 Renewable resource companies established in 2006 2006 establishments in California Google acquisitions Wind power companies of the United States X (company) Alphabet Inc. subsidiaries 2013 mergers and acquisitions