Estimated reading time: 4 minutes
Integrated scope starts in June
Semco Maritime has strengthened its offshore wind service position after subsidiary Wind Multiplikator signed a long term integrated service contract with Skyborn Renewables for Germany’s Nordergründe offshore wind farm.
The contract starts on 1 June 2026 and runs for an initial 5.5 years, with an option to extend. It covers operations and maintenance for 18 Senvion 6.2 MW wind turbine generators, foundations and the offshore substation under one service setup.
For offshore wind operators, that matters. Mature assets often carry a patchwork of maintenance scopes, interfaces and contractor responsibilities. Nordergründe is moving toward a simpler model, where one service structure covers the asset from turbine to substation.
First joint contract for Wind Multiplikator and Semco
The agreement is the first service contract jointly delivered by Wind Multiplikator and Semco Maritime since Semco acquired the German offshore wind service specialist in 2023. Semco said the model brings turbine and offshore substation services into one integrated framework.
Stephen Booth, Vice President, Service, Renewables Division at Semco Maritime and Managing Director of Wind Multiplikator, said the contract represents a “from blade to grid” approach.
He said the setup underlines the group’s ability to support “long term efficiency, high availability and reliable operations across the entire asset.”
The language is direct, but the operating point is practical. Offshore wind farms are not newbuild projects forever. Once assets move deeper into their operating life, the question becomes less about installation and more about availability, response time, spare parts and clear accountability.
Scope includes maintenance, monitoring and marine coordination
The service package includes scheduled and unscheduled maintenance for the wind turbines, foundations and offshore substation. It also includes 24 hour surveillance and monitoring services, including marine coordination.
The contract further covers spare parts procurement, warehousing and management, engineering services, and Quality, Health, Safety and Environment support.
Skyborn Renewables will provide logistics, with Hooksiel serving as the service base. That gives the operating model a local anchor close to the German North Sea asset.
Jan Engelbert, Head of Asset Management at Skyborn Renewables and Managing Director of Nordergründe, said the integrated model helps reduce operational complexity by aligning responsibilities across turbines and the offshore substation under one service framework.
He said the structure supports efficient long term operations and helps optimise total cost of ownership for Nordergründe.
Nordergründe forms part of Germany’s operating wind base
Nordergründe has a total capacity of 111.6 MW and has been operational since 2017. The wind farm consists of 18 Senvion 6.2 MW turbines installed on monopile foundations in the German North Sea.
The service contract comes as offshore wind owners continue to focus on the operating performance of existing assets. For logistics and marine service providers, that creates steady demand for coordinated maintenance, vessel planning, warehousing, spares control and offshore access.
What changes when one contractor is responsible for more of the asset? In simple terms, fewer handovers. In offshore operations, every handover can add time, cost and risk. A single service setup does not remove the weather window, but it can make decision making cleaner when faults, inspections or parts requirements appear.
For ports, service bases and marine coordinators, the shift is also visible onshore. Maintenance activity depends on predictable quayside access, technician mobilisation, spare parts storage and vessel coordination. Hooksiel’s role as service base places that activity within the regional offshore wind support chain.
The contract also reflects how offshore wind maintenance is becoming more integrated as assets age. Turbine reliability, foundation integrity and substation availability are linked in practice, even if they have often been managed through separate work packages.
For Skyborn, the agreement puts those responsibilities into one framework. For Semco Maritime and Wind Multiplikator, it gives their combined offshore wind service business a reference contract covering both turbines and electrical infrastructure at an operating German wind farm.
