Major UK engineering group Expleo has developed a closed-loop methanol fuel system that claims an up to 92% cut in greenhouse gas (GHG) emissions per ship and operational savings of £1.4m ($1.68m) a year.

Expleo said its system uses solid oxide fuel cell technology alongside carbon capture and storage to enable a vessel to use its captured CO2 and green hydrogen to synthesise e-methanol.

The group modelled its fuel system on the 6,241-gt offshore wind farm service vessel Bibby Wavemaster 1 (built 2017) during a feasibility study into clean power propulsion funded through the Department for Transport’s Clean Marine Demonstration Competition.