Tracing Carbon Intensity of Sustainable Marine Fuels

This report is a comprehensive examination of the carbon intensity of sustainable marine fuels, focusing on the necessity of measuring greenhouse gas emissions throughout the entire fuel supply chain. It outlines the challenges faced by ship operators in verifying the carbon intensity of fuels due to various production methods and the potential for fuel mislabeling. The report discusses the importance of a guarantee of origin (GO) certification and innovative technologies, such as blockchain, to ensure transparency and traceability of fuel production. It details the collaboration with technology vendors TYMLEZ and Authentix to develop solutions for tracking the carbon intensity of hydrogen and ammonia. The report also highlights the need for harmonized international standards to facilitate the authentication of green fuels and mitigate risks associated with regulatory compliance. Recommendations for future work emphasize the importance of validating these technology solutions to support the transition to zero carbon shipping fuels.