A set of 5 units as schown on the illustrations.

Each unit comprehends a bunch of 20 kites of 500 m² each.

Total length of lines:3000 m.

Radius of a double lever:200 m.

Trajectory to right or to left:

3925 m/5,so an arc of 90°/5. Time of a trajectory:between 10 and 15 s .

Flight speed:75 m/s .

Angular speed:

0,03 radian/seconde.

Total debit of the working fluid:100 m3/s.

Swept area:2,5 km².

Power:1 GW with wind from 12 to 15 m/s .

Occupation of the ground:

0,65 km² (area of the circular trajectory of tips of levers).

Occupation of the aerial space:15 km3.

Less than 0,03 $/KWh.

The costs of installation and maintenance are far from being the only costs to be taken into account.

The global investment indeed includes the costs and the connected constraints to the use of the ground and the space.

OrthoKiteBunch is conceived and studied to allow a good limitation of such constraints beyond what is known in the field of the wind energies.

OrthoKiteBunch system can be built into several scales from a 100 W toy or sport game with only one kite (OrthoKite system) to an 1 GW set:the scale changes,not the components.

OrthoKiteBunch is the best reply to the following three ratios:swept area (so power) / land occupation;swept area / surface of aerial occupation;swept area / volume of aerial occupation.

OrthoKite system:the levers have for function to increase the torque, and not to bound a space of flight,which is devolved to lines:so the structural elements are of reduced dimensions.OrthoKite system does not generate loss unlike linear systems during winding phase _ needed energy. Unlike other lever systems,with OrthoKite the tangential strength (which creates torque) is optimal because of orthogonal transmission between line(s) and lever and during a great trajectory of kite(s).Morever alternating traction on one lever then the opposite lever allows the useful and optimal torque instead useless towing on the conversion system when there is a simultaneous traction on the two levers.The radial parasitic strengths are non-existent, and axial strengths according to the angle of flight. The axial strengths can be eliminated by the implementation of jacks under a supplementary tray and allowing its slope according to the angle of flight of the kites (the horizontal swivelling tray allows to direct the set according to the wind direction).Among cyclic systems (with continuity of production) OrthoKiteBunch is the simplest for its implementation and its working.

KiteBunch system:a bunch of kites allows to maximize the swept area in the occupied airspace,particulary on the vertical plan,and allows an unified speed of kites (on the contrary of a conventional train of kites:kites must be taken away some of the others to avoid wind interferences, and thus must occupy a more important space than the occupied space from KiteBunch system;and besides kites have to fly from different speeds in touch with their respective distances of the anchorpoint).With a joined OrthoKiteBunch-nuclear power plant,the security occuped aerial space would be common.

The trajectories of kites are very simple and easily can be modelled for automation.

An offshore implementation is studied.