The method is based on the use of a couple of captive balloons at an altitude of 800 metres, on a rotating platform able to follow the direction of the wind and through cables working also as motion transmission element.

A balloon opens the sail connected to it, and while this balloon is kept away by the force of high altitude winds pushing on the surface of the sail, the other balloon, at close sail, is taken on the vertical of the platform, drawn by the same cable connected to the first balloon.

At the end of cable unwinding, once it is at run end, an automatic mechanism operates the closing of sail wings of the first balloon and it operates the opening of sail wings of the second; in this way the functions of the two balloons reverse, repeating the same dynamic.

Above method allows to obtain energy by means of continue alternate movement of cable hooked to the two aerostatic balloons.