IN Brief:
- Ocean Breeze Energy has appointed Deutsche Windtechnik to maintain all 12 alpha ventus turbines from January 2027.
- Six Senvion 5M and six AREVA Multibrid M5000 units are covered by the arrangement.
- Remote monitoring, coordination and 24-hour alarm services join the scope in September 2027.
Deutsche Windtechnik has secured a service contract covering all twelve offshore wind turbines at Germany’s 60MW alpha ventus project. Owner Ocean Breeze Energy selected the independent service provider following a tender, with maintenance, fault response and technical support beginning in January 2027. A broader operational package, including remote monitoring and grid management, is scheduled to follow in September.
The contract covers a mixed turbine fleet comprising six Senvion 5M machines and six AREVA Multibrid M5000 units. Both types are rated at 5MW, giving the wind farm its 60MW installed capacity. The site has operated as one of Germany’s earliest offshore wind developments, so its maintenance requirements involve established assets rather than equipment entering a first warranty or commissioning period.
Ocean Breeze Energy is responsible for the continued operation of the project and has confirmed its intention to keep the offshore installation in service. Under the new division of responsibilities, Deutsche Windtechnik will undertake routine servicing, troubleshooting and associated technical support. Ocean Breeze will retain design responsibility, described by the companies as third-level management.
That split separates day-to-day field maintenance from the higher-level engineering responsibility for the turbine designs. The service provider can carry out planned work, analyse defects and manage corrective activity, while the asset owner retains responsibility for decisions and technical governance that sit beyond the agreed service scope. The precise work authorisation and escalation arrangements will depend on the contract and operating procedures.
Deutsche Windtechnik already knows both turbine models at alpha ventus. It began basic maintenance of the six Senvion 5M units in 2017 and extended its activities to the six AREVA Multibrid turbines in early 2020. Those earlier contracts expired at the end of 2024. The new agreement therefore reinstates a broad role at a site where the company has several years of asset-specific operating experience.
The mixed fleet requires maintenance teams to work with two sets of turbine designs and diagnostic arrangements. The Senvion and AREVA machines have different components and service procedures, so inspection plans, corrective repairs and parts support must be matched to the individual equipment. The project’s foundations also differ by turbine type: Ocean Breeze describes jackets beneath the Senvion machines and tripod structures beneath the AREVA units. A common service contractor does not make their mechanical or structural requirements interchangeable.
Offshore maintenance is further constrained by access. A service visit needs appropriate weather, vessels or other approved transfer arrangements, and safe access to the turbine; work that could be started quickly on land may have to wait for a suitable marine window. Teams can group planned inspections and corrective work where practicable, but the companies have not published a quantified cost or availability improvement attributable to the new contract.
From September 2027, Deutsche Windtechnik will also provide remote monitoring, Marine Coordination Centre and Offshore Control Centre services, grid management and 24-hour alarm handling. These services extend the scope beyond turbine maintenance visits. Remote alarms can prompt diagnosis and prioritisation, while marine coordination helps ensure offshore interventions are planned around personnel safety, vessel movements and the operational state of the site.
The electrical network at alpha ventus also needs coordinated operation. Ocean Breeze’s project description states that turbine output is collected at 30kV and stepped up to 110kV at the offshore substation before transmission towards the German mainland via Norderney. A turbine can be mechanically available while an electrical fault or export restriction prevents its output reaching the network. The new grid-management and control functions will sit alongside, rather than replace, the owner’s retained design responsibility.
The service company is also expanding its activities around Borkum, an established logistics base for wind farms in the German North Sea. It will support alpha ventus alongside Riffgat and Trianel Windpark Borkum I. Shared local resources and familiarity with vessel and port arrangements can help the scheduling of offshore teams, while individual asset access and safety procedures continue to govern each visit.
Ocean Breeze Energy also operates the 400MW BARD Offshore 1 wind farm and the associated offshore infrastructure. Its alpha ventus award concerns a mature generating asset, rather than a new-build turbine supply contract. Continued operation requires maintenance and monitoring of equipment whose original commissioning took place in 2010, with system condition, access and export availability determining how reliably its installed capacity can be used.
The practical handover is scheduled in two stages: turbine maintenance and troubleshooting start under Deutsche Windtechnik in January 2027, and the expanded monitoring, marine coordination and grid-management services follow in September. Ocean Breeze will continue to hold the higher-level design responsibility. The agreement does not specify a fixed increase in generation or turbine availability, so performance effects will only become measurable during subsequent operation.
