Comprehensive Assessment of the Impact of Energy Management Strategies on the Sizing of Energy Storage Systems in Hybrid Vessels

Energy storage systems (ESSs) are increasingly deployed in maritime transport to support decarbonization goals. While battery-powered vessels are viable for short routes, hybrid solutions with conventional diesel generators and ESS can be beneficial for large ships. ESSs can offer several services in hybrid vessels as peak shaving, spinning reserve or strategic loading to support the diesel generators in order to improve efficiency and reduce fuel use. These services impact the sizing of the ESS and the trade-offs between the benefits and the higher requirements for the ESS should be assessed during the sizing process. This paper extends a Pareto based sizing approach for the optimal design of hybrid storage systems combining multiple storage technologies intended for full electric vessels to hybrid vessels where diesel generators are also present. Moreover, the paper provides an illustrative example of a comprehensive quantitative assessment of these services and the associated resulting ESS sizing for an offshore support vessel.