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EnerOcean prep twin-turbine floater project

By: Bridget Randall-Smith 21/09/2020 17/09/2020

General Windfarms

Spanish R&D company, EnerOcean is interested in developing a 48 MW floating wind array off the coast of Gran Canaria using its twin-turbine platform W2Power.

W2Power is a semi-submersible floating platform carrying two integrated turbines. EnerOcean sees this as “the most cost-effective floating wind solution", by doubling the power per foundation and reducing cable requirements by 40-45%. The platform can also host additional functions for multiuse e.g. aquaculture, energy storage and wave energy.

EnerOcean started collaborating with the originators of W2Power in 2010, became lead developer in 2012 and later sole owner of the patented technology. In 2016, EnerOcean were granted funding for a DemoWind project, in the EU’s Horizon 2020 programme, to deploy a 1:6 scale prototype with two 100-kW class turbines. EnerOcean partnered with Spanish companies Ghenova to build the foundation; Ingeteam for the electrical engineering; and UK company TensionTech for the mooring system. EnerOcean DEMOWIND project was a € 2 M effort (including € 0.5 M CAPEX for the prototype) following 9 preceding Spanish and EU R&D projects.

The 1:6-scale prototype was deployed at PLOCAN’s open sea test site, 4.5 km off the coast of the Canary Islands, in June 2019. The 40t displacement prototype was installed in water depths of 65m using three hybrid mooring lines (110m of chain and 193.5m of nylon) and three drag embedded anchors (2.5 tonnes/anchor). Sea testing has enabled demonstration of the functionality, stability and durability of the W2Power concept.

Speaking with EnerOcean at FOWT2020 it was revealed that the company plans to install a further four platforms, each fitted with two 6 MW turbines, off the coast of Gran Canaria. Each platform weighs less than 3,000t and measures 117m in length, 91m in width and 15m in draft. The turbines will have 126-140 m rotor diameters for a rated capacity of 12 MW per foundation, using commercially available turbine models. EnerOcean is currently seeking investors to help progress this project.

This story was first reported exclusively for 4C Offshore subscribers. For more information, click here
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EnerOcean prep twin-turbine floater project

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