From emission control to alternative fuels, sustainability has become the central test of maritime accountability. This article examines the regulations, costs, and opportunities shaping the environmental transformation at sea.
Environmental sustainability is a major topic on all maritime stakeholders’ agendas today. Regulatory pressure driven through policy initiatives means that shipowners and charterers must consider their environmental credentials.
Environmental sustainability considerations have evolved from being a reputational add-on to becoming a structural cost driver for shipping. Greenhouse gas (GHG) emissions and air quality remain in the spotlight. However, wider environmental issues such as biofouling, at-berth emissions (AFIR), ballast water management, and the potential strengthening of scrubber discharge regulations also demand attention.
Two regulatory pillars currently dominate the discussion of GHG emissions action and economics in maritime transport:
- The EU’s Fit For 55 (FF55) package combines the EU Emissions Trading System (absolute emissions) and FuelEU Maritime (emissions intensity).
- The IMO’s forthcoming global fuel standard (intensity) and pricing mechanism under its Net-Zero Framework.
The EU ETS places a direct carbon price on voyages connected to the European Economic Area. Its phased rollout increases coverage from 40% of 2024 emissions (payable in 2025) to 70% in 2026 and 100% from 2027. From 2026, the scheme will also cover methane and nitrous oxide, raising compliance costs significantly.
These costs are expected to influence vessel selection across segments and fuel types. With EU Allowance (EUA) prices fluctuating between €70 and €100 per tonne of CO₂ in 2025 and analysts projecting levels of €130–200 by 2030, the cost burden will escalate. For a mid-sized vessel, ETS costs can already run into millions annually.
The FuelEU Maritime regulation within FF55 adds a parallel obligation from January 2025, requiring ships over 5,000 GT calling at EU ports to reduce the GHG intensity of their energy use on a well-to-wake basis by 2% initially, tightening to 80% by 2050. While early penalties are modest compared to ETS costs, projections indicate that FuelEU compliance costs could surpass ETS costs after 2035 if fleets fail to decarbonise.
As the fuel transition continues, the opportunity to maximise efficiency and drive down carbon emissions now is compelling. Companies that integrate these signals into fleet renewal, retrofit strategies, and chartering policies have the potential to capitalise on a green premium and secure better financing terms.
To explore how the maritime industry can anchor safety, sustainability, and crew welfare at the heart of vessel selection, read the full thought leadership report, From Pledges to Practice: Anchoring Safety, Sustainability, and Crew Welfare in Vessel Selection, commissioned by RightShip.
