A wind turbine manufacturer can lease the location for a period of four to five years. He pays a yearly lease fee and receives in return benefits of the produced electricity. The test site can accommodate prototypes with installed electrical powers up to 6 MW, hub heights up to 150 m and rotor diameters up to approximately 150 m.  The route to obtain a building permit is relatively short. Usually the civil activities at the site can start within three months after the lease contract is concluded. The 10kV grid connection cables are already available at the prototype locations.