The Gennaker offshore wind farm is being developed in the German Baltic Sea by Skyborn Renewables, through its subsidiary OWP Gennaker.
The 976.5MW project received a construction and operations permit in December 2025 from the State Office for Agriculture and Environment in Stralsund, Mecklenburg-Western Pomerania.
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The final investment decision for the project is targeted for summer 2026.
The buildout is expected to take about two years, with commissioning planned for 2028.
Once operational, the wind farm is expected to produce up to four terawatt-hours annually, sufficient to supply around one million people.
Gennaker offshore wind farm location
The Gennaker wind farm site sits 15km north of the Fischland-Darß-Zingst peninsula in the German Baltic Sea. It lies within the Darß offshore zone, designated by the Mecklenburg-Western Pomerania State Government as a priority area for wind energy in June 2016.
The zone includes the existing Baltic 1 wind farm and sections of several cable corridors.
Development background
Skyborn initiated the project development in 2011 and conducted the preliminary technical studies and feasibility evaluation.
Feasibility studies and environmental investigations were subsequently conducted between 2011 and 2016.
Skyborn secured initial approval for the site in May 2019 and retains exclusive rights to develop the project.
Gennaker offshore wind farm make-up
The Gennaker offshore wind farm will feature 63 Siemens Gamesa SG 14-236 DD offshore wind turbines installed on monopile foundations.
Each monopile will measure up to 54.1m in length, with an upper diameter of 7.5m and a weight of up to 877t. The units will be produced in Rostock, around 40km from the Gennaker site.
The turbines and monopiles will be connected by transition pieces, with each unit being 20m in height and weighing around 400t.
The SG 14-236 DD turbine model has a 236m rotor and offers a power uplift to 15MW. It uses a direct drive architecture and a permanent magnet generator, which reduces the number of high-load components and is intended to lower maintenance demand and improve installation efficiency.
Grid connection
The Gennaker offshore wind farm will feature two offshore platforms, OSS Zingst and OSS Darß, providing a combined connection capacity of up to 927MW. The platforms are being built at shipyards in the Netherlands.
The platforms will collect power generated by the turbines and transform it to 220kV before export via three subsea and onshore cable circuits forming the OST-6-1 link to the new Gnewitz substation, located approximately 70–90km from the platforms.
Work at Gnewitz is advancing following permitting under the Federal Immission Control Act, while a 2025 planning decision for the territorial waters section has supported offshore route preparations and onshore landfall works near Dierhagen, which started in 2025.
The two offshore transformer platforms will be operated by 50Hertz under an agreement with Skyborn that sets out responsibilities and the commercial and technical framework across design, build, installation, commissioning, operations and eventual decommissioning.
Contractors involved
Skyborn signed a turbine supply agreement and a long-term service programme with Siemens Gamesa in July 2025 for the 63 turbine units, aligned with a master supply agreement signed in June 2024.
In July 2025, Fred Olsen Windcarrier was named as the preferred contractor for turbine transport and installation.
Seaway7, part of Subsea7, was awarded a contract in January 2026 to transport and install the 63 monopiles and transition pieces, with offshore activity due to begin in 2027.
TKF, a supplier of connectivity solutions and part of TKH Group, signed a preferred supplier agreement (PSA) in September 2025 and is working in a consortium with Boskalis to engineer, manufacture, test and supply around 140km of inter-array cables and associated accessories, as well as oversee installation.
A PSA was signed with Dajin Heavy Industry for the provision of 63 transition pieces. Manufacturing will take place in Penglai, China, with completion carried out in Odense, Denmark.
The HSI consortium comprising HSM Offshore Energy, Smulders and Iv is responsible for the engineering, procurement, construction and installation of both offshore substations and their jackets.
Mammoet, a heavy lifting and transport solutions provider, supported HSM Offshore Energy in loading out the cable deck structure of the offshore platform.
Allseas was contracted to transport and install the two substations using the heavy-lift vessel Pioneering Spirit.
Fugro supported the consortium by conducting ground investigations to enable precise foundation positioning and safe navigation around seafloor obstructions using innovative solutions such as the WaveWalker jack-up platform and Starfix® technology.
Ramboll was contracted to undertake the preliminary and detailed design of the foundations for the Gennaker offshore wind farm.
