While the quest for pulling more megawatts from wind turbines has generally led to bigger and bigger rotors on turbines of conventional design – like this monster 22-MW number in China – Norway’s Wind Catching Systems (WCS) has taken a different path. It claims its mega-array of smaller rotors arranged in a grid would achieve up to 126 MW, or five times the energy of a 15-MW single-rotor turbine, in North Sea conditions – and even more in some other locations around the world.

In addition to the superior energy output, WCS says the Windcatcher design would allow for simpler installation compared to conventional wind turbines, greater ease of access for maintenance, simpler scalability, and a longer service life of 50 years, as opposed to 30 years for large single-turbine units.

The idea is to share the floating supports between a whole lot of small, relatively lightweight turbines, trussed up in enormous arrays of structural scaffolding, distributing both the weight of the turbine fans and generators, as well as the force supplied by the wind, across a broad area.