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NSORe wins the contract for a converter station for the NSC2 offshore grid connection project

2026/06/18
Eiffage, through its Belgian subsidiary Smulders, created NSORe (Neptun Smulders Offshore Renewables) with Neptun Werft, part of the Meyer Werft group. NSORe is an equal joint venture dedicated to HVDC (High Voltage Direct Current) offshore substation projects.  

NSORe, as part of a consortium with Siemens Energy, has just been awarded by 50Hertz, the transmission system operator in the north and east of Germany, the contract to build a
2-gigawatt converter station for the offshore grid connection project NSC2 (North Sea Connector 2).

Negotiations have also started for a second project of similar scale.

The project already awarded consists of an offshore platform and onshore station. The consortium is responsible for the complete implementation and turnkey handover of the facilities. This includes planning the overall system, procuring components, construction, installation onshore and offshore, and commissioning.

NSORe is responsible for the engineering and construction of both the topside – the main structure of the offshore platform, housing transformers, switchgear, and converters that transform alternating current into direct current – and the jacket foundation. Production will take place across facilities in Rostock and Vlissingen, supporting long-term industrial activity. Siemens Energy is responsible for the high-voltage elements, including the onshore station.

Commissioning of the NSC2 platform is scheduled for the end of 2034.

 

This is a good day for Rostock and the region. With this contract, Neptun Smulders Offshore Renewables is taking an important next step in building a strong European provider of converter platforms. Together, we combine our expertise across the entire value chain and contribute actively to the implementation of the energy transition. 

Malte Poelmann
Managing Director of NSORe

This project shows exactly why NSORe was created: to combine complementary strengths and deliver complex offshore converter platforms at European scale. Smulders’ experience in offshore wind and NEPTUN WERFT’s production capabilities are both essential to making that possible.

Dieter Weyns
Managing Director of NSORe

As the transmission system operator for eastern Germany, Berlin and Hamburg, we are pleased that, in a transparent and open tendering process, a consortium was able to prevail both in terms of price and technology, and will manufacture key components at a shipyard within our grid area. This demonstrates that domestic shipyards are now capable of offering competitive bids for the construction of offshore platforms. We are also confident that we will soon conclude the negotiations for the second converter project, thereby providing Rostock and the NEPTUN WERFT with a further positive outlook.

Stefan Kapferer
CEO of 50Hertz

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