Modern wind power develops by increasing the unit capacity of wind turbines. In the near future, a capacity of 15 MW will be achieved. The next stage is 20-25 MW. The main technological obstacle is the creation of wind turbine blades with a length increased by 1.3-1.7 times.

In addition to the technical tasks associated with the growth of air flow speed in certain areas of the blades, there are also logistics tasks. Carriage of wind turbine blades along the roads becomes difficult and expensive work.

One of the possible solutions to technical and logistical problems is the use of technologies that were created in the Soviet Union in the 1960 s for space exploration. This is the lattice fins technology.

Metal or composite lattice fins provide light weight, high mechanical strength and durability. Lattice fins technology makes it possible to manufacture wind turbine blades of smaller transverse dimensions and weight while maintaining lift force similar to that of wind turbine blades manufactured using conventional technology.

The small cross-section and simplicity of the design of the lattice fins make it possible to transport the wind turbine blades (easy assembling constituent elements) using ordinary forty foot shipping container.

The aerodynamic property of the lattice fins to change the lift force vector by 90 degrees at local airflow speeds from 0.8M to 1.3M allows us to make a passive protection system against excessive rotation speed of the wind turbine blades.

The technology of lattice fins will allow wind turbines to become the cheapest way to generate electricity.

