EU ETS Transhipment Rules Tighten as Brussels Moves to Pull Big Boxships Back Inside the Net

 EU ETS Transhipment Rules Tighten as Brussels Moves to Pull Big Boxships Back Inside the Net

The Commission has stopped waiting for evidence of carbon leakage and started legislating against the capability to create it — while simultaneously offering the largest containerships a surrender discount to stop relaying outside Europe.

Why Relay Volumes Drifted East of Gibraltar Once Shipping Entered the ETS

The original leakage safeguard was written on a behavioural premise: a non-EU port only threatened the system's integrity once it had already proved itself as a relay hub. The 65% transhipment-share test, applied within 300 nautical miles of an EU port, was a rear-view mirror. It caught hubs that had already won the box, not the ones building the quay to win it next.

Anyone who has sat in a network planning review knows how quickly that gap gets exploited. Relay share is a network design variable, not a fixed port attribute — a carrier can shift a Med relay call between two hubs in a single phase-in without touching the mainline string's rotation. By the time the twelve-month traffic data confirmed the shift, the schedule had been stable for two seasons.

The revision in COM(2026) 616 attacks precisely this lag. The Commission's own recital language concedes that the share criterion may fail to cover ports with high potential to attract transhipment away from Union terminals.

What the 50% Trigger and the New Infrastructure Test Actually Capture

Capability replaces track record as the designation trigger

The proposal splits designation into two independent routes. The first is a pure infrastructure and proximity test: a non-EU port within 150 nautical miles of an EU port, with draught above 11 metres, berth length above 250 metres, and ship-to-shore cranes suitable for container transhipment. No relay history is required at all.

This is a material shift in regulatory posture. A greenfield or expanding terminal in the Union's immediate vicinity can now be excluded from the definition of port of call before it handles a single relay box. The second route survives but is loosened — the transhipment-share trigger drops from 65% to 50%, still within 300 nautical miles.

Neighbouring container transhipment port designation thresholds, current versus proposed. Source: NauticX Visualisation.

The Commission has moved from policing observed diversion to pre-empting the physical capacity to divert. For network planners, the arbitrage window has effectively been closed before it opens.

Annual list review compresses the planning advantage

Just as consequentially, the list of neighbouring container transhipment ports moves from a two-year to an annual review cycle, with updates due by 31 December each year. Commercial teams have been able to build a relay call on the assumption of relative list stability across a service contract cycle. That assumption is now considerably weaker.

The carve-out is the strategic detail most readers will underweight. Ports in third countries that effectively apply equivalent measures — explicitly including those under an ETS linking agreement — are excluded from the list. Equivalence has become a commercial asset for the hosting state, not merely a diplomatic one.

How the 10,000 TEU Derogation Converts Relay Share into a Surrender Discount

The second limb is the more interesting piece of engineering, and it runs in the opposite direction. Under the new Article 12(3-g), shipping companies may surrender fewer allowances than their verified emissions on inbound voyages from a non-EU port, where the vessel is a containership of 10,000 TEU and above and the voyage exceeds 300 nautical miles. The relief applies until 31 December 2035, and extends to in-port activity emissions connected to that voyage.

The calculation basis is where the operational logic sits. Relief is scaled by the share of TEU discharged at the EU port for the sole purpose of being loaded onto another ship bound for a non-EU port, measured against total TEU discharged by that vessel. In plain terms: the more of your European call that is genuine relay work rather than final import, the less you surrender.

EUA surrender obligation against relay share at the EU call under Article 12(3-g). Source: NauticX Visualisation.

That construction rewards exactly the cargo the earlier limb is trying to protect. Import cargo has nowhere else to go and is therefore inelastic to the carbon cost; relay cargo is mobile, and Brussels is pricing accordingly. Crucially, the difference between verified emissions and allowances surrendered is cancelled rather than auctioned, so the environmental cap is preserved even as the revenue is foregone.

This is not a discount on emitting. It is a discount on choosing Rotterdam over a hub outside the net — funded by cancelled allowances rather than by the atmosphere.

The Case That Not a Single String Comes Back

The counter-argument deserves serious weight, and it is one an operator will make faster than a policymaker.

Relay routing decisions are dominated by terminal productivity, feeder network density, berth availability and stevedoring cost — not by a marginal carbon line item. A surrender discount that expires in 2035 sits awkwardly against terminal concession horizons and mainline network commitments that run considerably longer. Carriers do not redesign a Far East–Europe string on a nine-year incentive.

There is also a structural asymmetry the proposal does not resolve. The relief is available only to vessels of 10,000 TEU and above on voyages beyond 300 nautical miles, concentrating the benefit among the alliance operators who already possess the scale to absorb ETS cost. Smaller and regional operators face the tightened designation regime without access to the offsetting mechanism.

The text also leaves the mechanics thin. No cap on the relief is specified, nor is the verification and reconciliation procedure for the relay-share calculation — and terminal-level TEU attribution by discharge purpose is not a trivial reporting exercise for any line running mixed calls.

What to Settle Before the 2028 Entry Point

For carriers, the immediate work is data architecture, not network redesign. If relief is calculated on discharge purpose at TEU level, the systems capable of evidencing that split to a verifier need building now, not in the compliance year.

For terminal operators inside the Union, the equivalence carve-out and the annual list cycle together create a genuine commercial opening — the first in this file where EU hubs are being actively subsidised rather than merely defended. For those outside it, the 150-nautical-mile infrastructure test means a capital expenditure decision on draught and crane capability now carries a regulatory consequence that did not exist before.

For shippers, expect the cost pass-through conversation to bifurcate. Lines will price import cargo and relay cargo against different carbon exposures, and BAF-adjacent surcharge structures that treat ETS as a single blended rate will start to look indefensible.