AWES were intended to harness high altitude wind energy (HAWE) which is both more strong and constant. So to reach this goal the tether(s) should be very long. However it is in the process of shortening, passing from the jet-stream zone initially envisaged to a zone below 600 m in altitude. Why not continue and end up with tether-wing proportions like those of kitesurfing (20-30 m tether length for 5-20 m² kite area)? This is because a second goal has now supplanted the first: it is a question of obtaining a product that is lighter and more mobile than a current HAWT of same power range.
These AWE systems are very successful. So one can deduce a AWES for electricity production with equivalent tether-wing proportions could be also more promising.
So a 10-20 kW AWES comprising a 20-40 m² kite for 30-70 m tether length could more easily be implemented to feed for example a house, above all if Low radius loop figure is used. Then the kite area and its power scale by the square of the tether length.
Using a single skin kite would also lead to a possible progress in power to weight ratio, efficiency, lower cut-in wind speed…
Annexed note: a low aspect ratio leads to a lesser efficiency but also to a possibly larger area compared to the diameter of the path (loop or figure-eight), so the tether length. Generally the aspect ratio of power kites, comprising SkySails’ is far lower than that of paragliders, their angle of attack being higher. The table 6-2 page 92 shows that a low aspect ratio of 2.45 leads to a glide number of 4.49.