Bridging the Offshore Energy Gap: Stillstrom’s New Standalone Infrastructure for Vessel Electrification

Stillstrom, the offshore charging venture by A.P. Moller – Maersk, has unveiled two pioneering standalone charging systems—the Power Hub and Power Tower. By decoupling charging infrastructure from wind turbine assets, these systems provide a flexible, scalable pathway for electrifying Service Operation Vessels (SOVs) in both operational and future offshore wind developments.

While the offshore wind industry is a leader in renewable generation, its service fleet remains heavily dependent on fossil fuels. Stillstrom’s latest launch addresses this infrastructure deficit by providing dedicated, quayside-style power in the middle of the ocean.

The Power Hub is a compact, monopile-mounted system tailored for retrofitting within operational wind farms. It allows operators to integrate charging capabilities into existing sites without modifying existing turbine foundations. Conversely, the Power Tower is designed for the architectural planning phase of new-build projects. Its design mirrors standard turbine foundations, ensuring it can be installed using the same vessels, tools, and logistics processes already deployed for wind farm construction.

Kristian Borum Jørgensen, CEO of Stillstrom, emphasized that SOVs represent the largest source of CO_2 in offshore wind operations. By providing a dedicated charging layer, Stillstrom enables the industry to decarbonize its entire lifecycle. This innovation was recently recognized at the Maersk "Inventors of the Year" awards, highlighting the strategic importance of offshore grid-to-ship connectivity.

System Variants: Power Hub (Retrofit/Compact) and Power Tower (New-build/Integrated).

• Foundation Type: Monopile-compatible.
• Installation Method: Fully compatible with standard offshore construction vessels (no specialized tools required).
• Primary Application: SOVs (Service Operation Vessels) and CTVs (Crew Transfer Vessels).
• Intellectual Property: Multiple patents granted and pending for offshore charging and monopile integration.