A transparent and tracible chain of custody is critical to maritime decarbonisation as it provides the mechanisms to verify that fuels are low carbon from source to wake. SEA-LNG’s chain of custody fact sheet busts common myths and misconceptions about chain of custody to support the industry’s  transition to low-carbon fuels.

In October 2024, the Rotterdam-Singapore Green and Digital Shipping Corridor (GDSC) conducted a successful pilot at the Port of Rotterdam for the bunkering of liquefied biomethane using a mass balanced chain of custody, when 100 tonnes of biomethane was supplied by SEA-LNG member Shell to the container ship, CMA CGM TIVOLI. The mass balanced chain of custody will be key for the commercial scaling of liquefied biomethane (and e-methane in the future) as a marine fuel.

Mass balancing allows biomethane producers to sell fuel into existing natural gas grids and enables fuel customers to purchase this biomethane from the grid via a certificate. This approach is favoured by regulators as it is lower cost and simpler to scale as it uses existing gas and LNG infrastructure. The purpose of the pilot was to test the compliance of the mass balance fuel certification process with EU regulations including EU ETS, FuelEU Maritime and Renewable Energy Directive III. Lessons learned are being developed and will be shared with the supply chain participants, regulators, certifiers and auditors.

DOWNLAD CHAIN OF CUSTODY FACT SHEET