FuelEU Maritime: the shipowner's compliance strategy playbook

The first FuelEU settlement cycle is now behind the industry. Reports went to verifiers by 31 January 2026, compliance balances came back by 31 March, the flexibility decisions — pooling, borrowing, banking — had to be locked into the database by 30 April, and penalties were settled by 30 June. Every shipowner trading to Europe now knows, with a number attached, what this regulation costs.

That number is the starting point of this playbook, because the most common mistake we still see is treating FuelEU as a reporting exercise. It is not. FuelEU created a compliance commodity — the surplus or deficit on each ship’s greenhouse gas intensity — and a market to trade it in. The owners who did well in the first cycle were not the ones with the greenest fleets. They were the ones who knew their position early and traded it deliberately.

The mechanics in one page

FuelEU Maritime (Regulation (EU) 2023/1805) applies to commercial vessels above 5,000 GT calling at EU/EEA ports. It covers 100% of the energy used on voyages between EEA ports and at berth, and 50% of the energy on voyages into or out of the EEA.

The regulated quantity is the well-to-wake greenhouse gas intensity of the energy used on board, measured in grams of CO₂-equivalent per megajoule. The reference baseline is 91.16 gCO₂e/MJ — the 2020 fleet average. The limit tightens in steps:

• 2025–2029: −2% → 89.34 gCO₂e/MJ
• 2030–2034: −6% → 85.69 gCO₂e/MJ
• 2035: −14.5%
• 2040: −31%
• 2045: −62%
• 2050: −80%

The step that matters for decisions being made today is 1 January 2030. A ship running on conventional fuel oil sits roughly at the baseline intensity, which means it carries a deficit of a little under 2 gCO₂e/MJ today. In 2030 that same ship’s deficit grows to about 5.5 gCO₂e/MJ — the exposure roughly triples overnight, with no change in how the ship is operated.

The penalty math, worked through

The penalty is €2,400 per tonne of VLSFO-equivalent energy in deficit. The conversion constant is 41,000 MJ per tonne of VLSFO, which puts the penalty at roughly €0.059 per megajoule of non-compliant energy. Law firms tracking the first cycle translated this into approximately €640 per tonne of CO₂-equivalent at current targets — several times the EU ETS carbon price, which is the point: the penalty is designed to be the expensive option. To put your own vessel’s numbers through this arithmetic — attained GHG intensity, energy and year in; compliance balance and penalty out, step by step — use the FuelEU penalty estimator.

An illustrative calculation, using the regulation’s own formula. Take a ship that consumes 5,000 tonnes of VLSFO-equivalent energy within FuelEU scope in a year, at the baseline intensity of 91.16 gCO₂e/MJ:

• Energy in scope: 5,000 t × 41,000 MJ/t = 205 million MJ
• Deficit against the 89.34 limit: 1.82 g/MJ × 205 million MJ ≈ 374 tonnes CO₂e
• Converted to VLSFO-equivalent: ≈ 100 tonnes
• Penalty: 100 × €2,400 = €240,000 for the year

From 2030, the same ship’s deficit against the 85.69 limit is about 5.47 g/MJ — roughly €720,000 a year. And the regulation adds a lash for persistence: for each consecutive period a ship remains non-compliant, the penalty is increased by 10%. A ship that simply pays and carries on is on an escalator.

These are illustrative figures — actual balances depend on verified fuel data and the certified emission factors of each fuel — but the shape of the exposure is exactly this.

Banking and borrowing: the intertemporal tools

FuelEU gives each ship two ways to move compliance across time.

Banking is the friendly one. A ship that ends the year with a compliance surplus — because it blended biofuel, ran dual-fuel on LNG, or simply used cleaner energy than the limit — can carry that surplus forward to future periods. There is a strategic angle here that is easy to miss: a surplus generated cheaply against today’s −2% target retains its face value in gCO₂e when the target tightens to −6%. Owners planning biofuel trials or dual-fuel operation would do well to run them before 2030 and bank the result, rather than waiting until the deficit forces their hand.

Borrowing — the regulation calls it “advance compliance surplus” — lets a ship in deficit borrow from the following period, capped at 2% of the ship’s compliance target, and the borrowed amount is paid back multiplied by 1.1. Borrowing is also prohibited in two consecutive periods. Read those constraints together and the message is clear: borrowing is a liquidity tool for a bad year, not a strategy. It buys twelve months at 10% interest, once.

Pooling: where the real market is

Pooling is FuelEU’s most consequential mechanism, and the one the regulation’s drafters clearly intended to carry the load. Two or more ships may combine their compliance balances into a pool — and critically, the ships do not need to belong to the same company. A surplus generated by someone else’s methanol-fuelled newbuild can offset the deficit on your conventionally fuelled handysize, for a price.

The regulation imposes three validity conditions on any pool: the total pooled compliance balance must be positive; a ship that entered with a deficit cannot leave with a bigger one; and a ship that entered with a surplus cannot leave in deficit. Within those rails, allocation is free — which makes pooling a genuine bilateral market, not an administrative formality.

The first cycle gave us early price signals. Industry platforms tracking pool transactions reported prices running below a third of the penalty rate. OceanScore’s pooling-versus-penalty comparison points the same way: for a ship carrying a deficit, buying compliance in a pool sits well under what the regulation charges for staying short. At the same time, legal advisers who papered these deals note that pooling contracts show extensive variation in structure and terms, with no standard form on the horizon. Allocation risk, payment timing, verifier coordination and what happens if a counterparty’s data fails verification all have to be negotiated deal by deal.

That combination — a real price advantage, an immature contract market — is precisely why timing dominates. The 30 April deadline for recording pool arrangements is hard. An owner who knows their verified balance in early February shops the pool market for two months from a position of strength. An owner who scrambles in mid-April takes whatever terms are left. The regulation quietly transfers money from the disorganised to the organised.

The 2026–2030 decision tree

For each ship trading to Europe, the strategy question reduces to four options, and they interact:

1. Run the deficit and pool it. The default for conventional tonnage while pool prices stay well below the penalty. The risk is price: as 2030 triples the fleet-wide deficit, demand for surplus rises structurally. Nobody can responsibly forecast pool prices in 2030, but the direction of pressure is not a mystery.
2. Generate surplus and sell or bank it. Biofuel blending is the lowest-capex route; LNG dual-fuel tonnage generates structural surplus against current targets. Surplus is an asset with a rising strike price — the question is whether to monetise it now or bank it against your own 2030 exposure.
3. Borrow. Bridge financing only — 2% cap, 10% surcharge, never twice in a row.
4. Pay the penalty. At €2,400 per VLSFO-equivalent tonne plus a 10% escalator for consecutive years, this is the option the regulation wants you to refuse. Persistent non-payment carries harder consequences still, up to detention.

Two regulatory tripwires belong in every 2030 plan. First, the RFNBO sunrise clause: renewable fuels of non-biological origin currently earn a double-counting multiplier (their energy counts twice toward compliance, through end-2033) — but if the 2031 review finds RFNBOs below 1% of the fuel mix, a mandatory 2% RFNBO sub-target applies from 1 January 2034. Second, from 2030 container and passenger ships above 5,000 GT must connect to onshore power at TEN-T core ports, with the obligation broadening in 2035 — a capex line that belongs in the same spreadsheet as the fuel strategy.

What to do this quarter

The operational translation of all of the above is unglamorous and decisive:

• Know your position monthly, not annually. A compliance balance you can only compute in January is a position you cannot trade. Fuel consumption, fuel certificates and voyage scoping need to flow into a running balance through the year.
• Model the 2030 step now. Take each ship’s actual 2025 balance, apply the 85.69 limit, and price the result at the penalty rate and at a range of assumed pool prices. That table is the business case for every fuel decision you will make before 2030.
• Treat pool counterparties like charter counterparties. Diligence the surplus provider’s verification status, agree allocation and failure terms in writing, and do not leave the negotiation to April.
• Bank early surplus. If you can generate surplus cheaply against the −2% target, do it and carry it forward. The same tonne of compliance is worth more standing in front of a −6% target.

FuelEU rewards exactly one thing: operators whose fuel and voyage data is accurate, verified and available early. The regulation’s flexibility mechanisms are genuinely generous — but every one of them is a door that closes on 30 April, and the owners still assembling their numbers in the spring are the ones who pay for everyone else’s discipline.