In order to comply with stringent environmental regulations, shipbuilders and ship-owners are seeking cleaner fuels and the integration of renewable energy sources into ship power systems. Such solutions regularly result in additional costs for ship operators, both in the case of retrofitting existing ships or acquiring completely new vessels. This paper deals with the life-cycle cost assessments (LCCAs) of different power system configurations of a ro-ro passenger vessel operating in the Croatian short-sea shipping sector. Electrification of the ship is considered as an option to reduce the carbon footprint (CF) of the vessel and to achieve economic savings during its lifetime. In this sense, the ship operational profile is analysed and its total power needs are determined. The life-cycle assessments of an existing diesel engine-powered solution and two potential battery-powered ship options (with and without photovoltaic cells) are performed by means of GREET 2018 software. Furthermore, these options are compared from an economical viewpoint, where different carbon credit scenarios are investigated. The results show that a diesel engine-powered vessel has the highest carbon footprint, as expected. However, it is also found that a battery-powered vessel (with or without photovoltaic cells) has a minimum environmental footprint and at the same time represents economically the most favourable solution for all possible carbon allowance scenarios. This indicates that all-electric ships seem to be a promising option for the future development of the Croatian short-sea shipping sector.

为了遵守严格的环境法规，造船商和船东正在寻求更清洁的燃料，并将可再生能源整合到船舶动力系统中。这样的解决方案通常在翻新现有船舶或购买全新船舶的情况下给船舶经营者带来额外的费用。本文涉及克罗地亚短途海运领域中运行的滚装客船不同动力系统配置的生命周期成本评估（LCCA）。船舶电气化被认为是减少船舶碳足迹（CF）并在其使用寿命期间实现经济节省的一种选择。从这个意义上讲，将分析船舶的运行状况并确定其总功率需求。现有的柴油发动机供电解决方案和两个潜在的电池供电船舶选项（带或不带光伏电池）的生命周期评估是通过GREET 2018软件进行的。此外，从研究不同碳信用情景的经济角度对这些选项进行了比较。结果表明，柴油发动机驱动的船舶具有预期的最高碳足迹。但是，还发现电池驱动的容器（带有或不带有光伏电池）具有最小的环境足迹，同时在经济上代表了所有可能的碳配额方案的最有利解决方案。这表明，全电动船似乎是克罗地亚短海航运业未来发展的有前途的选择。