Scope of FuelEU Maritime
FuelEU Maritime applies to ships of 5,000 GT and above on voyages to, from, and between EU/EEA ports — the same scope as EU MRV. The regulation covers 100% of energy consumed on voyages between EU ports and 50% on voyages between EU and non-EU ports. Energy at berth in EU ports is also covered at 100%. From 2030, vessels calling at EU ports must use onshore power supply (OPS) or zero-emission alternatives at berth, adding another compliance dimension.
GHG Intensity Reduction Trajectory
The GHG intensity limit under FuelEU Maritime is measured as grams of CO2 equivalent per MJ of energy. The baseline is set at the 2020 average GHG intensity of the European fleet. The reduction trajectory is: 2% reduction from 2025, 6% from 2030, 14.5% from 2035, 31% from 2040, 62% from 2045, and 80% from 2050. Well-to-Wake (WtW) emission factors are used, meaning that the carbon intensity of the full fuel supply chain — from production to combustion — is assessed, not just tank-to-wake (combustion) emissions.
Automated GHG Intensity Calculations
Ecosail's FuelEU Maritime module calculates each vessel's annual GHG intensity based on fuel consumption data from EU MRV. Well-to-Wake emission factors for each fuel type — as defined in the FuelEU regulation and associated Delegated Acts — are applied automatically. The resulting annual GHG intensity is compared against the applicable limit to determine whether the vessel is in surplus or deficit — its FuelEU Compliance Balance.
Pooling, Banking, and Borrowing
FuelEU Maritime introduces three important flexibility mechanisms to help operators manage compliance: Pooling, Banking, and Borrowing. These mechanisms allow compliance surpluses and deficits to be transferred across vessels and, within limits, across time — giving operators significant tools to optimise compliance costs across their fleet. Ecosail's FuelEU module models all three mechanisms and recommends the optimal compliance strategy for each fleet configuration.
RFNBO Multipliers
The regulation also incentivises the use of renewable fuels of non-biological origin (RFNBOs) — primarily green hydrogen and its derivatives such as green ammonia and green methanol. Ships using RFNBOs receive a multiplier of 2x on their fuel consumption for the purpose of calculating GHG intensity compliance balance, effectively giving them double credit for every MJ of RFNBO consumed. Ecosail's module correctly applies these incentive multipliers, ensuring that investments in alternative fuels deliver their full compliance value.
Exemptions and Derogations
For vessels engaged in specific regulated trades, FuelEU Maritime allows time-limited exemptions and derogations. Passenger ships registered in an outermost region, ships without alternative berthing energy supply, and certain ice-class vessels may benefit from specific provisions. Ecosail's compliance team has mapped all exemption criteria, and the FuelEU module automatically applies relevant derogations to qualifying vessels.
Compliance Cycle and Penalty
The FuelEU Maritime compliance cycle mirrors the EU MRV cycle. Annual compliance reports are submitted through THETIS, and Documents of Compliance are issued by accredited verifiers. Non-compliance — a negative compliance balance that cannot be offset through pooling, banking, or borrowing — results in a financial penalty of €2,400 per tonne of VLSFO equivalent, a significant cost that emphasises the importance of proactive compliance management.
Unified Hub with EU MRV and EU ETS
Ecosail's FuelEU Maritime module is integrated with the EU MRV and EU ETS modules, creating a unified compliance hub for all three major EU maritime regulations. Voyage data entered once flows through to EU MRV, EU ETS, and FuelEU calculations simultaneously, eliminating duplication and ensuring consistency. Fleet managers gain a single dashboard view of their compliance position under all three frameworks, enabling coordinated decision-making.
Preparing for 2050
FuelEU Maritime is the most transformative regulation facing the shipping industry over the coming decade. Its 80% GHG intensity reduction target by 2050 will fundamentally reshape fuel choices, vessel designs, and commercial relationships across the sector. Starting FuelEU compliance management now — building data systems, understanding compliance balance, and modelling fuel switching scenarios — is the foundation for surviving and thriving under this regulation. Let Ecosail be your FuelEU Maritime compliance partner.
Key takeaways
- 2% GHG intensity reduction from 2025
- 6% reduction from 2030
- 14.5% reduction from 2035
- 31% from 2040; 62% from 2045; 80% from 2050
- Well-to-Wake emission factors used
- 2x multiplier for certified RFNBOs
- Penalty: €2,400 per tonne of VLSFO equivalent for unresolved deficit