While the maritime industry has focused squarely on emissions from ocean-going vessels, relatively less attention has been given to port emissions. These emissions are difficult to measure, in part because ports’ emissions come from sources outside of direct control of the port, including vessels, rail and trucks. This report aims to provide a concise but insightful update on the port decarbonization landscape. It contains information on trends and lessons learned that will help ports, terminal operators, vessel operators, community stakeholders, policymakers and others work together toward maritime decarbonization targets.