Arcadis Ost 1
- Type: Wind Farm
- Latitude: 54.8230000
- Longitude: 13.6440000
Arcadis Ost 1 Offshore Wind Farm Profile
Location and Geography
- The Arcadis Ost 1 Offshore Wind Farm is located in the Baltic Sea, within the German territorial waters, approximately 19 kilometers northeast of the island of Rügen in the federal state of Mecklenburg-Western Pomerania, Germany.
- The wind farm is situated within a 12-nautical mile zone and covers an area of 29 square kilometers.
Developer and Ownership
- The project is developed by Parkwind, a green energy company, which acquired the project from KNK Wind in May 2018. This is one of Parkwind’s first international projects.
Capacity and Turbines
- The wind farm has a total nominal power of 257 MW, generated by 27 Vestas V174-9.5MW wind turbine generators. Each turbine has a production capacity of 9.5 MW and features a rotor diameter of 174 meters with a swept area of 23,779 square meters.
- The turbines are mounted on monopile foundations, with each monopile weighing over 2,000 tonnes and measuring up to 100 meters in length with a diameter of 9.4 meters.
Infrastructure
- The wind farm includes an offshore substation (OSS) with associated connections and internal park cables. The OSS is 30 meters high and weighs 2,380 tonnes, installed on a monopile foundation. It collects the green power and converts it to a 220kV level before transmission to the mainland.
- The electricity is transported onshore to the German Transmission System Operator (TSO) 50Hertz’s grid connection point in Lubmin, where it is converted to 380kV and fed into the 50Hertz transmission grid.
Installation and Construction
- Offshore construction began in June 2022, with the installation of foundations and cables. Turbine installation started at the end of November 2022 using the floating Rotor Nacelle Assembly (RNA) installation method developed in collaboration with Heerema Marine Contractors and Vestas.
- The installation of 24 turbines was completed by April 2023, with the remaining three turbines scheduled for installation in autumn 2023.
Financing
- The project reached financial close in June 2021, raising €570 million of debt from a group of nine lenders, including KBC Bank, Belfius Bank, Helaba, KfW IPEX-Bank, Coöperatieve Rabobank, Société Générale, ING Bank, EKF Danmarks Eksportkredit, and the European Investment Bank.
Contractors and Partners
- Key contractors involved include:
- Vestas: Supplied the wind turbine generators.
- Heerema Marine Contractors: Performed turbine installation using the floating RNA method.
- DEME Offshore: Won the Engineering Procurement Construction and Installation (EPCI) contract for the foundations.
- Steelwind Nordenham: Fabricated the monopile foundations.
- Bladt Industries: Delivered the substation.
- Semco Maritime: Provided design, installation, and commissioning of high, medium, and low voltage equipment.
- JDR: Delivered the inter-array cables.
- Global Marine: Performed the installation work for the cables.
- COWI: Detailed design of wind turbines and OSS foundations.
Operational Status
- The wind farm began producing electricity in January 2023 and is now fully operational, contributing to Germany's Energiewende (energy transition) by powering approximately 290,000 households.
Environmental and Technical Studies
- Various studies were conducted, including wind studies by DNV-GL Garrad Hassan Deutschland, ice condition studies by Karna Research, pre-engineering studies by DNV KEMA, site investigations by Fugro Deutschland, seismic investigations by Fraunhofer-IWES, and an environmental impact study by IfAÖ.