jakosc writes "The Economist has an interesting article about increasing the efficiency of wind-powered generators by turning them into flying wind farms. These tethered generators would harness high speed jet stream winds above 15,000 ft and in theory could give outputs of 40MW per generator. (links to a pdf) The developer's website has more details of some of the safety, technological and economic issues."
Harnessing High Altitude Wind Power
Linear Mode
