The length of the blade — to be made from specifically developed compounds promising maximum strength and exceptional light weight — has not been revealed.

It is understood, however, that it will far exceed “the few existing prototype blades around 62-63 metres long” — putting it in the frame to be the world’s longest.

Emphasis has been placed on aerodynamics and structural ­design in fashioning the new blade from profiles developed by LM for its GloBlade, which offers an additional 4-5% of annual energy production compared to standard designs for a 1.5MW