IN Brief:
- DNV has certified the third milestone for Nordseecluster A under Germany’s BSH offshore wind standard.
- The certification allows RWE to proceed toward wind turbine installation at the German North Sea site.
- Nordseecluster A will comprise 44 Vestas V236-15.0MW turbines with 660MW of capacity.
DNV has certified the third milestone for the Nordseecluster A offshore wind project in Germany, clearing the way for wind turbine installation at the German North Sea site.
The certification has been issued under the German Federal Maritime and Hydrographic Agency standard and confirms that the project’s design, installation, operation, and decommissioning planning comply with the required regulatory framework. Nordseecluster A includes the NC 1 and NC 2 offshore wind farms and forms the first phase of the wider Nordseecluster development.
Nordseecluster is being developed by RWE and Norges Bank Investment Management in two phases, with total planned capacity of up to 1.6GW. The A phase will comprise 44 Vestas V236-15.0MW turbines and is expected to deliver 660MW when fully commissioned in early 2027. The second phase, Nordseecluster B, is planned to add a further 900MW through 60 additional turbines, with commissioning scheduled from 2029.
The certification follows major offshore construction progress. Both offshore substations and all monopile foundations for Nordseecluster A have already been installed. With the third BSH release in place, the project moves from design and enabling infrastructure toward the turbine installation phase, when mechanical, electrical, marine, and commissioning workstreams converge.
Certification is a formal stage, but it sits close to the technical core of offshore wind delivery. German offshore projects must demonstrate that design assumptions, installation planning, operational arrangements, and eventual decommissioning measures meet regulatory requirements. Independent verification reduces risk across structural design, marine operations, safety systems, electrical interfaces, and lifecycle compliance.
The Nordseecluster project is located around 50km north of the island of Juist in the German Bight. RWE describes the cluster as a combination of four wind farm sites with individual planned capacities of 225MW, 435MW, 420MW, and 480MW. Their proximity allows economies of scale across procurement, installation, logistics, and operations.
The project’s earlier offshore substation installation showed the electrical infrastructure package moving into place before turbine installation. The latest certification shifts attention to turbine readiness, grid connection interfaces, offshore commissioning, and the route toward first power.
The wider supply chain illustrates the complexity of large offshore generation delivery. Vestas has been selected to deliver at least 104 V236-15.0MW offshore turbines across the wider cluster. Chantiers de l’Atlantique’s Atlantique Offshore Energy is supplying two electrical offshore substations, Hellenic Cables has been selected for cable manufacturing, Dajin Offshore is manufacturing and delivering monopile foundations, Van Oord is responsible for offshore installation, and Havfram Wind will transport and support turbine installation.
Those work packages place certification milestones at the centre of delivery discipline. Turbine installation depends on foundation readiness, offshore substation availability, cable interfaces, vessel scheduling, weather windows, port logistics, lifting plans, electrical protection, commissioning protocols, and operational handover. A missed interface can affect more than one contractor or package.
Nordseecluster also forms part of Germany’s wider offshore expansion pathway. Large projects must be delivered in a market where supply chains are under pressure, grid connection infrastructure is central to project viability, and regulators are scrutinising cost and schedule risk. Certification does not remove those pressures, but it provides a defined technical release point for one of the country’s major offshore builds.
As Germany increases offshore wind capacity, standardised and independently verified project delivery will become more prominent. Offshore wind assets are large electrical systems operating in harsh marine environments, and their reliability depends on decisions made during design, installation, and commissioning. Nordseecluster A’s latest milestone moves the project closer to generation while keeping formal assurance embedded in the route to energisation.
Further information on the project is available from RWE’s Nordseecluster project page.
