In 2016 the proof of concept is undertaken in the IFREMER tank test. Trials assessed the technology advantages and dynamic behaviour of a 12 MW structure. All parts of the concept (blades, float and generator) were representative of a 12 MW wind turbine according to the Froude scaling method. Thus, results were easily converted into full scale data.

The 1/50^th prototype demonstrated 3 advantages of the Eolink patented concept and corroborate numerical studies.

First, the wind turbine, anchored on a single point mooring system, is able to naturally face the wind. Even more, the structure afforded wave and wind misalignment up to 90 degrees and 3 meters significant wave height. Secondly, the 66 m float with a 12 MW turbine affords 24 meters waves with low stress in the mooring line. Third, the turbine generator is able to produce 12 MW power in a nominal 8 m/s wind, having a low tilt angle of 2 to 4°.

As a conclusion of this study, cost assessment indicates a 25% reduction compared with other technologies and final dimensions of the 12 MW turbine were determined:

• Power: 12 MW
• Rotor diameter: 200 m
• Nacelle height: 120 m above sea
• Nacelle mass: 700 tons
• Float: Semi-submersible
• Length: 66 m
• Width: 58 m