A novel integrated hydrogen production and storage system on a semi-submersible floating wind turbine

Many offshore areas with significant wind resources are located far from electricity demand centres and existing energy transmission networks. Production of hydrogen directly on floating wind turbines is a scalable and modular approach to harnessing these wind resources. This paper presents a design for a floating 15 MW semi-submersible offshore turbine integrated with electrolyzers for hydrogen production and storage tanks. The modified system is analyzed under combined wind turbine and hydrodynamic loads. The modifications led to a 4–5 % increase in pitch and roll inertia of the platform. The maximum acceleration at the nacelle increased by less than 10 %, remaining within acceptable limits, and the power output changed by less than 2 % across all load cases. Mooring line tensions increased by approximately 3 %, demonstrating minimal impact on overall stability. The findings highlight the feasibility of integrating hydrogen systems without compromising the dynamic response and operational efficiency of semi-submersible offshore wind turbines.