New decarbonization regulations are being implemented across the marine industry globally and port operators need to be aware of new requirements which come into force as early as 2025 for certain vessels in Europe. Onshore power (or OPS) has become a major aspect of decarbonization strategies that ports need to adopt to meet the latest GHG regulations (such as FuelEU ) and this presentation provides both port operators and shipowners/operators with an outline of the requirements they will need to achieve over the next few years to meet the new regulations.