The known conceptions for harnessing high altitude wind power propose devices floating in the air and tethered to the ground, since it is not possible to build several thousand meters high wind towers. The energy generated should be transmitted to the ground through electrical or mechanical transmission cables arranged parallel to the tether. Although this idea has been known for a long time (e.g.: British Patent GB489139 from 1938), and a lot of patents have been obtained since then, nobody built a commercial-scale prototype. No high-altitude wind power technology to date has reached an industrial scale. Since the flying units themselves are planes, autogiros, kites, parachutes or balloons, which are well known, one can suppose that the reason of the fiasco has to be the tethering cable itself, and the complications related to it. The question arises, that if the tether is the cause of the lack of success, why we are keeping to it? Does the tether have such a function that makes it indispensable?