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Offshore Projekte Plattform

Offshore Projects

We deliver clean energy from sea to land.

Connecting Europe every day

Our grid

In 2009, we marked the beginning of a new era when we delivered alpha ventus, Germany’s first offshore grid connection system, a 66-kilometre-long alternating current (AC) link. Only a year later, we put into operation BorWin1, the world’s first 200-kilometre 400 megawatt (MW) direct current (DC) grid connection system. Since then, we have added another 15 offshore grid connection systems to our roster – providing roughly 10.6 gigawatt (GW), or enough to supply more than 13 million households with clean energy from the North Sea. With our numerous offshore grid connection systems, we deliver green energy safely from sea to land – every day.  

In addition, we operate a quartet of interconnectors across European borders. Connecting countries and regions around the North Sea creates an international chain of high-voltage grids. These make it easier, cheaper and more efficient to transmit electricity across borders and to more effectively balance European supply and demand. Our interconnectors link Denmark, Germany, the Netherlands and the United Kingdom. Among them is NorNed, the world’s longest high-voltage subsea direct current link.  

Together, our grid connection systems and interconnectors cover over 3,600 km and transmit 14.4 GW of electricity – enough to supply more than 18 million European households with clean energy. And there’s much more in the making. For example, we are planning to implement another 22 offshore grid connection systems with a total capacity of 34.5 GW in the North Sea region by 2031 – ten in Germany and 12 in the Netherlands.  

Find an overview of our projects below:  

Offshore Corporate Gridmap EN

Our projects in Germany

Fuelling Europe’s largest economy

Our offshore grid connection systems in the German North Sea currently provide 7.1 GW of electricity: 

  • alpha ventus, AC, 66 km, 62 MW, Hagermarsch; in operation since 2009  

  • BorWin1, DC, 200 km, 400 MW, Diele; in operation since 2010  

  • BorWin2, DC, 200 km, 800 MW, Diele; in operation since 2015  

  • BorWin3, DC, 160 km, 900 MW, Emden/Ost; in operation since 2019  

  • DolWin1, DC, 165 km, 800 MW, Dörpen/West; in operation since 2015  

  • DolWin2, DC, 135 km, 916 MW, Dörpen/West; in operation since 2016  

  • DolWin3, DC, 160 km, 900 MW, Dörpen/West; in operation since 2018  

  • HelWin1, DC, 130 km, 576 MW, Büttel; in operation since 2015  

  • HelWin2, DC, 130 km, 690 MW, Büttel; in operation since 2015  

  • Nordergründe, AC, 32 km, 111 MW, Inhausen; in operation since 2015  

  • Riffgat, AC, 80 km, 113 MW, Emden/Borssum; in operation since 2014 

  • SylWin1, DC, 205 km, 864 MW, Büttel; in operation since 2015  

By 2031, we will deliver another ten offshore grid connection systems with a total capacity of 15.7 GW.  

  • BorWin5, DC, 230 km, 900 MW, Garrel/Ost; commissioning in 2025  

  • BorWin6, DC, 235 km, 980 MW, Büttel; commissioning in 2027  

  • DolWin5, DC, 130 km, 900 MW, Emden/Ost; commissioning in 2024  

  • DolWin6, DC, 90 km, 900 MW, Emden/Ost; commissioning in 2023  

  • BalWin3, DC, 245 km, 2,000 MW, Wilhelmshaven2; commissioning in 2029  

  • BalWin4, DC, 275 km, 2,000 MW, Unterweser; commissioning in 2029  

  • LanWin1, DC, 275 km, 2,000 MW, Unterweser; commissioning in 2030  

  • LanWin2, DC, 255 km, 2,000 MW, Heide area; commissioning in 2030  

  • LanWin4, DC, 225 km, 2,000 MW, Wilhelmshaven2; commissioning in 2031  

  • LanWin5, DC, 290 km, 2,000 MW; Rastede area; commissioning in 2031  

  • Offshore Technology

    Full speed ahead: the top part (‘jacket’) of an offshore converter is transported to its final location in the North Sea.

  • Offshore Grid Connection Systems

    Work in progress: installation of the offshore converter platform DolWin Kappa 35 km north of Norderney.

  • Offshore Konverterstation

    Lighting the way ahead: our offshore converters connect wind farms with the onshore extra-high-voltage grid and deliver green wind energy from sea to land.

  • Offshore Projekte Kabel

    Bundle of energy: a direct current cable system is prepared to connect DolWin5 with the onshore grid.

  • Offshore Projects Converter Room

    Everything is in the right place: together with our partners, we ensure that the highest HSEQ (Health, Safety, Environment & Quality) standards are met.

Our projects in the Netherlands

Expanding the offshore grid fast and at scale

Our offshore grid connection systems in the Dutch North Sea currently transmit 3.5 GW of electricity. 

  • Borssele Alpha, AC, 700 MW, Borssele; in operation since 2019

  • Borssele Beta, AC, 700 MW, Borssele; in operation since 2020  

  • Hollandse Kust (zuid) Alpha, AC, 700 MW, Maasvlakte; in operation since 2021 

  • Hollandse Kust (zuid) Beta, AC, 700 MW, Maasvlakte; in operation since 2022 

  • Hollandse Kust (noord), AC, 700 MW, Wijk aan Zee; in operation since 2023 

We will deliver another 12 offshore grid connection systems with a total capacity of 18.8 GW by 2031. 

  • Hollandse Kust (West) Alpha, AC, 700 MW, Wijk aan Zee; commissioning in 2024 

  • Hollandse Kust (West) Beta, AC, 700 MW, Wijk aan Zee; commissioning in 2026 

  • Ten Noorden van de Wadden, AC, 700 MW, Eemshaven Oude Schip; commissioning in ca. 2030 

  • Hollandse Kust (West), Kavel VIII, AC, 700 MW, Raum Nordseekanal; commissioning tbd

  • IJmuiden Ver Alpha, DC, 2.000 MW, Borssele; commissioning in 2029 

  • IJmuiden Ver Beta, DC, 2.000 MW, Maasvlakte; commissioning in 2028 

  • IJmuiden Ver Gamma, DC, 2.000 MW, Maasvlakte; commissioning in 2029 

  • Nederwiek 1, DC, 2.000 MW, Borssele; commissioning in 2030 

  • Nederwiek 2, DC, 2.000 MW, Maasvlakte; commissioning in 2030 

  • Nederwiek 3, DC, 2.000 MW, Geertruidenberg of Moerdijk; commissioning in ca. 2030 

  • Doordewind 1, DC, 2.000 MW, Eemshaven Oude Schip; commissioning in ca. 2030 

  • Doordewind 2, DC, 2.000 MW, Eemshaven; commissioning in ca. 2030 

International connections

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