Wind turbines are systems that collect and convert the kinetic energy in the wind to produce mechanical energy or electrical power. It has been highlighted that in order to intercept a greater quantity of energy contained in the wind, the turbine must be as large as possible.

The trend in the last decades of development is to make ever longer blades, with the length in the case of off-shore turbines which can even reach 130 meters.

Spar caps play a crucial role in increasing the efficiency and energy production of wind turbines. Due to their structural strength and the reduction in the overall weight of the blades, spar caps allow the wind generators to operate more efficiently, capturing and making the most of wind energy.
This means a significant increase of energy production, helping to maximize the efficiency of the equipment.