The method is based on the use of a sail surface elevated by the climbing force of an aerostatic balloon connected to the ground by a cable used also for energy transmission.

The wind present at high altitudes creates a horizontal push on the sail which in its movement transmits this energy to the ground via the connecting cable

At the end of its movement forward, the sail surface is reduced allowing it to move upwind with reduced energy waste.

In the above example energy is recuperated by exploiting the force of gravity moving mass. This function can be substituted by other systems based, for example, on kinetic energy, gas compression or on the accumulation of generated electrical energy.

Another energy recuperation system is based on the principle of antagonist dynamics of the two aerostatic modules connected to the ground by the same cable.