Siemens Wind Power will, for the first time, provide complete offshore wind power plant solutions including foundations, after EnBW placed an order for its 497MW Hohe See project, for which Siemens is partnering with GeoSea, part of the DEME Group.
In 2016, Siemens began with the development of project-specific solutions for the foundations of EnBW Hohe See wind power plant with a preliminary project. The result was the development of a large monopile design with a length of up to 80m and a weight of up to 1,500t to anchor the wind turbines solidly into the seabed.
GeoSea will deliver the foundations including monopiles and transition pieces. Siemens said that, with its extended scope, it helped to mitigate risk-exposure to the investors significantly. “The integrated design and installation approach together with the complete solution including turbines, towers, TPs and foundations provides investors with maximum security and confidence regarding the financing and completion of this project.”
Offshore construction at a site 90km north of the German island Borkum in the North Sea is scheduled to start in early 2018.
Siemens will begin manufacturing 71 of its 7MW wind turbines for EnBW Hohe See in mid-2018 at its new nacelle plant in Cuxhaven. The turbines will be shipped to the project harbor in early 2019.
The blades will be shipped from factories in Hull, UK, and Aalborg, Denmark.
Commissioning is planned for the third quarter of 2019. After commissioning, Siemens will perform service and maintenance for a period of at least five years.
Grid connection will be established via the BorWin3 high-voltage DC link and BorWin Gamma converter platform, to be installed by Siemens for the offshore transmission operator Tennet.