Rotor Blade Extension installation on a hanging blade

Rotor Blade Extension installation on a hanging blade

One of the advantages of RBE – Rotor Blade Extension is the way the installation is carried out: on-site and on a hanging blade, avoiding the necessity of heavy cranes and long downtimes.

RBE is a product that increases the efficiency of wind turbines, which consists of an additional blade tip segment, fixed at the blade tip of the rotor. That system was certified by DEWI / OCC in 2012.


Rotor Blade Extension installation increases the efficiency of wind turbines.

The prototype of RBE was designed by fk-wind, for wind turbines types Bonus 1.0 and Bonus 1.3, and Energiekontor has applied this technology in wind farms in Germany and Portugal.

Rotor Blade Extension design

The RBE type Bonus 1.0 has 1 meter long, 15 Kg and RBE type Bonus 1.3 has 1,5 meters long, 45 Kg. The extension is attached to the tip of the existing blade.

The lightning protection system of the original blade is removed and refitted in the new tip with a connection to the original lightning protection system. In the case of RBE for Bonus 1.3, it has an additional lightning protection system at the end of the new tip.

How the Rotor Blade Extension installation takes place?

Two half shells overlap the existing rotor blade tip and are fixed with adhesive resin. A final polishing and painting of the blade and RBE protects the material. The original rotor blade remains unaffected.

The installation process will be monitored in all its steps, through serviced measuring equipment. Scales must be employed to carry out the stoichiometric mixtures and the environmental conditions controlled through the thermo-hygrometers with data logger and anemometers.

To install the extension, weight of all the parts to be added must be totally accurately controlled.

Using Rotor Blade Extension tis possible to increase a wind farm production up to 7%, without replacing the rotor blades or the turbines. By that we have a minimum environmental impact and at the same time all the existing infrastructure can be used. Blade Extension installation

Rotor Blade Extension installation – Energiekontor’s Wind Farm.

For similar turbines and similar sites the method described will be a solution for the improvement of wind farms. Earlier mistakes in planning and energy prediction can be corrected.

Find more about the advantages of the installation of Rotor Blade Extension in wind farms already in operation at: