A comprehensive new study by VesselBot has revealed that greenhouse gas (GHG) emissions at major global ports continue to rise despite technological advancements and sustainability investments. The report, “Quantifying Port Carbon Footprints: Container Vessel Emissions Analysis in Major Global Terminals,” provides unprecedented insights into the environmental impact of container shipping operations at strategic global ports across Europe, North America and Asia.

Key findings include:

• Shanghai port recorded the highest emissions (140,000 tons), surpassing Singapore, despite handling fewer vessels, highlighting that vessel numbers don’t directly correlate with emission levels.
• Port congestion and inefficient operations significantly impact emissions, with U.S. ports reporting the highest congestion levels, particularly in January and February 2025.
• U.S. ports experienced record-high container volumes and associated emissions in January and February 2025, driven by preemptive shipping ahead of new tariff implementations.
• Singapore’s investment in digital twin technology demonstrates how technological innovation can mitigate emissions despite high traffic volumes.

“This report reveals the complex relationship between port activity and emissions,” said Constantine Komodromos, CEO and founder of VesselBot. “Our data shows that while more vessels generally mean more emissions, performance and operational efficiency are crucial mitigating factors.”

The report comes as the maritime industry faces increasing pressure to reconcile operational demands with environmental responsibilities under tightening global emissions regulations.

Access the report here.

Read VesselBot’s recent article for Sea Technology here.