Arkona offshore project still on course

Monday, 9 April, 2018 - 10:30

The heart of the Arkona offshore wind project in the German Baltic Sea has been completed on schedule. The electric offshore transformer station has now been successfully installed at a water depth of almost 30 meters. Moving the so-called "topside" from a barge onto the foundation with the crane ship Oleg Strasnov was the installation of the world's heaviest alternating current platform, which had previously been lifted in one block on the high seas.

The largest single component of the billion-euro project weighs more than 5,000 tons and consists of the jacket foundation anchored in the seabed and the topside with the electrical switchgear and transformers. It is the size of an eight-storey apartment building and has a helipad at an altitude of 70 metres above sea level. The construction of the transformer station at the French shipyard STX required more than 500,000 working hours.

The joint venture consisting of E.ON and Statoil will jointly use the platform with the transmission grid operator 50Hertz. The unmanned station is located in the middle of the construction site of the wind farm and will bundle the electricity produced by the 60 wind turbines, which is then transported to the mainland by sea cable. The substation is operated from the operating station of the wind farm in the port of Mukran Port in Sassnitz on Rugen island, while E.ONs Offshore Marine Coordination Center in Hamburg monitors and controls the operation.

The next step in the construction phase will be the laying of the internal parking cabling. Finally, in late summer, the erection of the wind turbines on the foundations already installed will start. The complete commissioning of the entire wind farm is planned for 2019.

The Arkona project is located 35 kilometres northeast of the island of Rugen. The wind farm will have an output of 385 megawatts (MW) and can theoretically supply around 400,000 households with renewable energy. The investment volume amounts to 1.2 billion euros. Compared to conventionally generated electricity, Arkona saves up to 1.2 million tons of CO2 per year. 60 turbines in the six-megawatt class from Siemens will be installed. The plants are based on monopile foundations in water depths of 23 to 37 metres.

Source: E.ON

Similar Entries

Heerema marine contractors installing a monopile

Dutch offshore contractor Heerema has been assigned to help build the first and largest commercial offshore wind farm in the United States. The prestigious 'Vineyard Wind LLC' project is the nation's first utility-scale offshore wind energy project. Situated 14 miles off the coast of Massachusetts, this project will generate clean, renewable, cost-competitive energy for over 400,000 homes and businesses, while reducing carbon emissions by over 1.6 million tons per year.

Turbine #31 installed in the North Sea as the company’s second German project nears completion

All 31 monopile foundation turbines are installed at our offshorewind farm Deutsche Bucht. The remaining 2 turbines will be erected on Mono Bucket foundations. Last month, the first turbine began delivering power to the German grid. Commissioning of the 8.4 MW turbines is ongoing.

Klaus Steen Mortensen, Chief Executive Officer of Bladt Industries (pict. Bladt)

Vineyard Wind LLC (Copenhagen Infrastructure Partners and Avangrid Renewables) and Bladt Industries have signed a contract for fabrication and delivery of the Vineyard Wind project’s offshore substation. The Vineyard Wind project will be first utility-scale offshore wind farm in the US. Bladt Industries is a global leader of substructures for offshore wind farms.

(Source: ResearchMoz Global Pvt. Ltd.)

The environmental regulatory pressure for reducing the emission of harmful substances from fossil fuel based energy resources is further expected to push the stake holders, either government or private entities, to opt for offshore wind energy sources, in their respective regions.