RWE Reaches Major Milestone in Nordseecluster Offshore Wind Project with Completion of All 44 Turbine Foundations

(Credit: RWE / Photographer: Matthias Ibeler)

(IN BRIEF) RWE has completed installation of all 44 turbine foundations and secondary steel structures for the 1.6 GW Nordseecluster offshore wind project off the German coast. Each monopile weighs around 1,500 tonnes and forms part of Nordseecluster A, which will generate 660 MW upon completion in 2027. The next phase, Nordseecluster B, will add 900 MW by 2029. Developed jointly by RWE and Norges Bank Investment Management, the cluster will supply renewable power to around 1.6 million German homes. This milestone reinforces RWE’s leadership in offshore wind and highlights Germany’s growing role in Europe’s clean energy transition.

(PRESS RELEASE) ESSEN, 7-Nov-2025 — /EuropaWire/ — RWE has achieved a major step forward in the development of its 1.6-gigawatt Nordseecluster offshore wind project with the completion of all monopile foundations and secondary steel structures for Nordseecluster A. Located approximately 50 kilometres north of the German island of Juist, the project will eventually deliver enough renewable energy to power around 1.6 million German homes.

Sven Utermöhlen, CEO of RWE Offshore Wind, expressed his appreciation for the collaboration behind the achievement, stating: “The completion of the foundation installation marks a key step towards implementing our 1.6-gigawatts Nordseecluster, which is currently the largest offshore wind project off the German coast. I would like to express my sincere gratitude to the RWE team, Van Oord, and all the other companies and partners who contributed to this success.”

Each of the 44 monopile foundations measures approximately 85 metres in length and weighs around 1,500 tonnes—roughly equivalent to 1,000 small cars. Fabricated and temporarily stored in Eemshaven, the Netherlands, the structures were transported to the site using Van Oord’s installation vessels “Boreas” and “Aeolus.” Rather than using traditional transition pieces, RWE opted for extended single monopiles fitted with offshore-installed secondary steel structures, reducing overall steel requirements and improving installation efficiency.

Progress on Nordseecluster A remains on schedule. Alongside the turbine foundations, the monopile for one of two offshore substations has already been installed, with the jacket foundation for the second substation expected by the end of 2025. Cable laying operations for approximately 70 kilometres of internal wiring are planned for early next year, followed by wind turbine installation in summer 2026. Once fully operational in 2027, Nordseecluster A will provide 660 megawatts (MW) of capacity, with the second phase, Nordseecluster B, set to add a further 900 MW by 2029.

Jointly developed by RWE (51%) and Norges Bank Investment Management (49%), the Nordseecluster represents a cornerstone of Germany’s offshore wind expansion. As RWE leads construction and long-term operation, the project underscores the company’s global leadership in offshore renewables—adding to major developments such as the 1.4 GW Sofia project in the UK, the 1.1 GW Thor project in Denmark, and the 795 MW OranjeWind project in the Netherlands with TotalEnergies.

With its completion, the Nordseecluster marks another milestone in Germany’s energy transition, strengthening Europe’s path toward carbon neutrality through large-scale offshore wind innovation.

For further enquiries:

Sarah Knauber
Renewable energies
+49 201 5179 5404

SOURCE: RWE