Power Engineering. A power plant for transformation of wind energy into electric energy. Wind turbines generally consist of a rotor including hub and rotor blades as well a machine pod in which both a generator and a gear unit are located. The pod is rotatabley positioned on a tower that provides stability of the whole construction. Further technical components are monitoring and control systems as well as a connection to the public power supply grid. The wind eventually causes buoyancy which makes the rotor and the hub rotate. This rotation is forwarded to the generator that generates electrical power and forwards it through the tower to the transformer.