Finland's Gasum expects to produce enough liquefied biogas (LBG), or bio-LNG, by 2024 to match the volumes needed to power AP Moller-Maersk's first four methanol-fuelled containership newbuildings.

But the bio-LNG will come at half the price.

Speaking in his first webinar on the "Future fuel outlook for maritime", vice president of maritime Jacob Granqvist said Gasum expects to have scaled up its LBG production in a couple of years to 4 terawatt hours, equivalent to around 260,000 tonnes per annum.