ISCC, one of the leading international sustainability certification bodies, considers Bio-LNG one of the most important trends in the market. Thanks to certification schemes and European mass balance rules, biomethane injected into the gas grid can be used as a sustainable fuel for transport applications. This development is accelerating investments in new liquefaction plants. In the maritime sector, certification is essential to ensure traceability, transparency, and trust. ISCC is also continuously strengthening its auditing and verification processes to safeguard the credibility of the entire value chain.