The Dounreay Trì project is a commercial demonstration that will be installed off the North coast of Scotland within a site about 9 km off Dounreay, Caithness. Hexicon has developed a semi-submersible foundation for offshore wind power that is intended to support any turbine. The Dounreay design hosts two 5-MW wind turbines.
The platform pivots on a third column of the triangular platform using a turret bearing and an electrical swivel. The turret is a solution widely used in the oil and gas industry, where it has been proven for decades on e.g. FPSOs (Floating Production Supply and Offloading) vessels.
A single dynamic export cable brings the power ashore. Subject to a Connection Offer from Scottish and Southern Energy Power Distribution, the associated onshore electrical infrastructure to connect the newly constructed substation at, or near, the existing Dounreay 33-kV substation. The substation will include switchgear, protection, and some local control.
Project delivery team
To successfully execute the Project, Dounreay has appointed several well-respected parties within the renewables industry, such as Atkins, RES Offshore, ABS, and Hexicon. Construction started in March 2017. Although the project is currently on hold, there is a strong commitment of the project’s key suppliers to re-start the project and commissioning is planned latest Q1 2020.