This case study explores a 100 kWp solar PV system installed on the hatch covers of a handymax bulk carrier. Operating primarily in Northern Europe, the system offsets auxiliary engine load during idle periods, leading to estimated savings of ~$350,000 between 2025 and 2035. With a CAPEX of $100,000, the payback period is around three years. Most savings come from fuel reduction, with additional benefits from EU ETS and FuelEU compliance. The business case is most sensitive to engine efficiency (SFC) and fuel price.

Japanese shipbuilding giant Mitsubishi announced that it will build and test a carbon-capture system for ships which promises to reduce ship emissions by 90%. Sea trials will be conducted by mid-2021 using an existing coal carrier operated by the Tohoku Electric Power Company.