The VertiWind concept is the first fruit of a collaboration between French offshore oil and gas engineering giant Technip and compatriot start-up Nénuphar, which for the past three years has been road-testing a 1:10 scale version of its VAWT design, kitted out with a foundation with hydraulic jacks that simulate the marine environment.

The diagonally bladed concept, designed for deep-water use, is on the fast track. The companies plan to have a 25MW development consisting of 13 full-scale “multifloater” units on line by 2015.