The project Floatgen crossed a new step with the installation of the anchoring system on the site sea trials SEM-REV off the coast of le Croisic (Loire-Atlantique). The wind turbine floating should now be towed on site by the end of the year. Explanations.
The floating wind turbine does not require heavy concrete foundations laid on the ocean bottom, but an anchoring system so that machines do not drift under the effect of wind and currents. The project Floatgen of the French company Ideol comes to deploy all the elements of its first system on the test site SEM-REV, 22 km off the coast of le Croisic.
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The whole, developed in-house, consists of six anchor lines synthetic-fiber (nylon), which is a first for a anchorage permanent of that type. It responds to opposing constraints, i.e. a cost limited to the manufacture and the installation, in order to reduce the price of electricity offshore, while ensuring a resistance to any test in the face of the elements (swell, storms, colonization by marine species).
A first machine deployed before the end of 2017
The system has been put in place by the Far Sapphire, a ship specialized chartered by Bourbon. In parallel, Ideol announces that it has completed the construction of the floating foundation, concrete, type “damping pool” (or pool shock), with the support of Bouygues Travaux Publics, on the port of Saint-Nazaire. The next step will be to assemble the turbine on the floating structure and then to tow it to its anchor. Operations that should be carried out before the end of 2017. The wind Floatgen and all its sub-systems will then be scrutinized for several months, in order to validate their resistance in real conditions and optimize their performance.
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Floatgen © Bouygues Travaux Publics
The project, started in 2013, brings together seven european partners whose Ideol who has designed all floating (foundation, anchor, cable for export of electricity) and Bouygues Travaux Publics (construction of the float concrete), but also in Central Nantes (ocean engineering). The program is supported by the european Union (FP7) and the Ademe (PIA). At the beginning of the month of June, the company raised€ 8 Million in additional funding from two industrial firms in the marine energy sector : the Norwegian Siem Offshore Contractors, who owns a fleet of 45 vessels support the offshore installation (installers of anchors or cables), and Hitachi Zosen, already a partner of Ideol for the past two years. It is planned that a first demonstrator Floatgen to be deployed in Japan in 2018.