offshore wind farm

He Dreiht Wind Farm Powers German Grid, Boosting Renewable Capacity

Germany’s renewable energy capacity has significantly increased with the inauguration of the 960-megawatt He Dreiht offshore wind farm in the North Sea.

September 22, 20266 min readMarine Insight

He Dreiht Wind Farm Powers German Grid, Boosting Renewable Capacity — Image Credits: enbw

Our take

The inauguration of the He Dreiht wind farm, delivering 960 megawatts of renewable energy to the German grid, represents a significant stride in Europe’s transition toward sustainable power sources and highlights the increasing importance of integrated data infrastructure in supporting these large-scale projects. The sheer scale of He Dreiht, comprising 64 turbines in the North Sea, underscores the potential of offshore wind to contribute meaningfully to national energy security, particularly as nations seek to reduce reliance on fossil fuels and mitigate the impacts of climate change. This development builds upon existing efforts to bolster renewable capacity, and resonates strongly with the principles outlined in our recent piece Integrating Data Infrastructure with Ocean Ecosystems: A Calibrated Approach, which emphasizes the necessity of robust data collection and analysis for effectively managing and optimizing ocean-based resources, including renewable energy infrastructure. The operational efficiency of wind farms like He Dreiht is inextricably linked to the quality and accessibility of data regarding weather patterns, marine conditions, and turbine performance.

The North Sea, with its consistent and relatively strong winds, is increasingly recognized as a prime location for offshore wind development. However, the challenges associated with constructing and maintaining these facilities in a harsh marine environment are considerable. The need for real-time, validated data on wave height, current velocity, and salinity, for instance, is crucial for ensuring structural integrity and minimizing downtime. This also extends to understanding the broader ecosystem impacts; shifts in marine life behavior, potentially influenced by the presence of these structures, demand ongoing monitoring. Furthermore, the potential impact on smaller organisms, as explored in Beyond warming: changes in copepod phenological timing in response to marine heatwaves before and during their blooms, warrants careful consideration as wind farm development continues to expand. The complex interplay between oceanographic conditions and operational efficiency necessitates a calibrated approach, leveraging empirical data to optimize performance and minimize environmental impact.

Germany's commitment to He Dreiht, and similar projects, demonstrates a tangible commitment to climate indicators and renewable energy targets. While the initial investment is substantial, the long-term benefits—reduced carbon emissions, enhanced energy independence, and technological innovation—are considerable. The project’s success will undoubtedly influence policy decisions and investment strategies across Europe and beyond, encouraging further development of offshore wind and other renewable energy sources. It's important to note that the global maritime landscape presents challenges beyond purely technical considerations. Recent events, such as the investigation into the Qingdao shipyard fire China Opens Probe Into Deadly Cargo Ship Fire That Killed 25 At Qingdao Shipyard, underscore the importance of stringent safety protocols and robust risk management in all maritime operations, including the construction and maintenance of offshore wind farms. A comprehensive, integrated approach, encompassing environmental stewardship, worker safety, and technological advancement, is essential for sustainable growth.

Looking ahead, the integration of advanced sensor technologies and artificial intelligence will be paramount in maximizing the performance and minimizing the environmental footprint of offshore wind farms. The ability to predict maintenance needs, optimize turbine blade angles based on real-time wind conditions, and monitor marine ecosystem health will become increasingly critical. The long-term challenge lies in developing a truly integrated data ecosystem that seamlessly connects meteorological data, oceanographic observations, turbine performance metrics, and ecological indicators. This requires not only technological innovation but also international collaboration and the establishment of standardized data protocols to ensure interoperability and facilitate knowledge sharing. A crucial question to watch is whether the current pace of data infrastructure development can keep pace with the rapid expansion of offshore wind capacity, and whether the resulting ocean intelligence can truly inform adaptive management strategies for a changing marine environment.

Germany has inaugurated the 960-megawatt (MW) He Dreiht offshore wind farm in the North Sea. The first turbines are already sending electricity to the German grid.

The wind farm is about 85 kilometres northwest of Borkum and has 64 Vestas V236-15.0 MW turbines. With 960 MW of installed capacity, it is Germany’s largest offshore wind farm.

EnBW, Allianz, AIP Management and Norges Bank Investment Management inaugurated the project in the presence of German Federal Environment Minister Carsten Schneider.

He Dreiht was built without state funding. Its electricity is being sold through long-term power purchase agreements (PPAs). About €2.4 billion is being invested in the project.

EnBW owns 50.1% of He Dreiht through a project company. A consortium made up of Allianz Global Investors, AIP Management and Norges Bank Investment Management owns the remaining 49.9%.

EnBW won the project in 2017 in Germany’s first offshore wind auction. The project was awarded without state funding.

Construction started in May 2024 with the installation of the foundations.

The first turbine was installed in April 2025. It was the first offshore installation of the Vestas V236-15.0 MW turbine. All 64 turbines were installed by August.

The foundations were made in Germany. Each one uses steel pipes that are nine metres wide and 70 metres long.

Other parts of the project came from several European countries. The connecting parts between the foundations and towers were made in Belgium, Britain, the Netherlands and Poland.

The components were taken to the construction site from the ports of Esbjerg in Denmark and Eemshaven in the Netherlands.

More than 500 people worked at the site during the busiest periods. More than 60 vessels were also involved in the construction work. EnBW managed the offshore work from its office in Hamburg.

Several companies have signed long-term PPAs for electricity from He Dreiht.

They include Evonik, Google, PASM, Fraport, Bosch, Salzgitter, SHS Stahl-Holding Saar, Deutsche Bahn and DHL Group.

The agreements give the companies longer-term price stability and help them plan their electricity use. They can also use the agreements to support their climate targets.

EnBW said PPAs will remain important as electricity demand grows because of digitalisation and artificial intelligence applications.

The wind farm can produce enough electricity to meet the yearly needs of about 1.1 million households, according to EnBW.

TenneT is responsible for connecting He Dreiht to the German electricity grid.

Electricity from the wind farm travels to the coast through an offshore platform and two submarine cables.

He Dreiht is being brought online step by step. Each turbine has to be connected to the grid, tested and then started.

Some turbines are already producing electricity. The remaining turbines will be connected as commissioning continues.

EnBW expects the entire wind farm to be operating in the coming months.

Each turbine has a capacity of 15 MW. The turbines have a hub height of 142 metres and a rotor diameter of 236 metres.

The rotor covers an area of about 44,000 square metres as it turns. EnBW says this is roughly the size of six football fields.

The company also says one turn of the rotor can produce enough electricity to meet the equivalent of four households’ needs for one day.

EnBW is also working on two more offshore wind projects. Dreekant has a planned capacity of 1 GW in the German North Sea, while Morven has a planned capacity of 2.9 GW in Scotland.

References: offshorewind, rivieramm

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