On 5 October Shell, innogy SE and Stiesdal Offshore Technologies A/S (SOT) signed an investment and cooperation agreement to build a floating wind turbine demonstration project at the Metcentre demonstration site near Stavanger in Norway. The demonstration project is based on SOT’s ‘TetraSpar’ floating foundation concept in combination with a 3.6MW Siemens Gamesa Renewable Energy (SGRE) direct drive offshore wind turbine. The project is due to be deployed in 2019 and involves an investment of around €18 million.
According to a press release by Innogy, the TetraSpar is a modular floating platform that consists of a tubular steel main structure with a suspended keel which is expected to offer competitive advantages over existing floating foundations due to leaner manufacturing, assembly and installation processes with lower material costs.
Dorine Bosman, VP Shell Wind Development, mentions in the same press release: “This initiative could help to lower the cost of offshore wind energy while providing more options for development locations, giving access to higher wind speeds and deeper water depths. Building our offshore wind business is a key part of the Shell New Energies strategy. Investing in innovative projects such as TetraSpar gives us early access to a new technology that could help us become a leading player in this field.”
The foundation will be manufactured and assembled in Denmark and the turbine will be installed in the port of Grenaa. At the demonstration site, the floating turbine will be moored to the seabed with three anchor lines in water depths of 200 metres and connected to the electrical grid.
The 3 partners partners will set up a company with a 33 percent share each for Innogy and Shell, with the rest held by SOT and its parent company. (Photo innogy SE)