RBE - Rotor Blade Extension allows the length increase of rotor blades for wind turbines types Bonus 1.0 and Bonus 1.3, provi ... ding AEP increase, and is Patented & Certified by EnergieKontor. This Rotor Blade Extension is installed on hanging blade, fixed to the original blade tip. So the installation time is very reduced allowing short down times periods. The best way to increase production on your Wind Farm. read more