Costs of energy storage systems on offshore hydrogen platforms can be reduced by 75%, study says

The costs for energy storage systems (ESS) on offshore hydrogen platforms can be reduced by 75%, making green offshore hydrogen production a feasible economic option as renewable fuel in the future, a study by Dutch green hydrogen company H2SEA found.

H2SEA said it investigated different cost reduction scenarios for offshore green hydrogen production with a connection to an off-grid wind farm for the power supply, claiming that due to a network of technology partners, the company has access to accurate data of hydrogen building blocks.

The company noted that different configurations have been evaluated, taking both grid stability and cost implications in mind, and one of the configurations that has been modelled, leads to a 75% decrease in costs of the ESS.

One of the cost reduction strategies involves the integration of different transformers optimizing space and cost per megavolt-amperes/m2, as well as the use of a smart ESS, H2SEA further said, adding that a different configuration of the energy storage and electrolyzer system can reduce infrastructure requirements.

To remind, at the beginning of 2024, H2SEA revealed that in cooperation with the Delft University of Technology (TU Delft), the company performed an assessment of monopile-based support structures for hydrogen-producing offshore wind turbines.

At the time, H2SEA said that one of the main questions was if decentral hydrogen production on a monopile-based support structure of an offshore wind turbine would be structurally feasible.

Furthermore, the goal was to define the differences in support structure geometry and assess the changes in the design methodology of an offshore wind turbine support structure, including a decentralized hydrogen production platform.