EU ETS allowance allocation for shipping

The cap-and-trade architecture applied to shipping

The EU Emissions Trading System, established by Directive 2003/87/EC, is a cap-and-trade market. One EU Allowance (EUA) authorises the emission of one tonne of CO2-equivalent. Every covered entity must hold, by a fixed annual deadline, EUAs equal to its verified emissions for the preceding calendar year. Failure to surrender on time triggers a penalty of EUR 100 per tonne of shortfall (indexed to the European consumer price index since 2013) plus the obligation to deliver the missing EUAs anyway.

Directive (EU) 2023/959, which entered into force on 5 June 2023, inserted maritime transport into the ETS by amending Articles 3g through 3gh of Directive 2003/87/EC. The maritime inclusion took effect from 1 January 2024, making calendar year 2024 the first compliance year for which EUAs must be surrendered. The first surrender deadline for shipping was therefore 30 September 2025.

Two allocation mechanisms have operated across the ETS’s four phases. The first is free allocation, where Member States distribute EUAs at zero cost based on historical activity or product benchmarks. The second is auctioning, where Member States sell EUAs to the highest bidder on regulated primary platforms. Maritime enters the system under pure auctioning. No free-allocation pool exists, no benchmark has been set, and no transitional grandfathering has been granted. Every EUA a shipping company surrenders was bought on the market.

Use the companion EU ETS EUA Liability calculator to convert verified emissions into a surrender obligation and cost estimate, and the EU ETS Scope Factor calculator to determine the voyage coverage fraction before applying the phase-in. For the broader regulatory context, see /wiki/eu-ets-for-shipping and /wiki/eu-ets-maritime-scope-phase-in.

Why shipping receives no free allocation

The legislative record in the impact assessment SWD(2021) 602 and in Recitals 5 through 13 of Directive (EU) 2023/959 sets out three reasons maritime was brought in without free allowances.

Free allocation under the ETS uses product benchmarks calibrated to the top 10 percent of installations in a sector. A benchmark requires a homogeneous output unit: a tonne of cement clinker, a tonne of hot-rolled steel. Maritime transport has no such unit. Tonne-miles, TEU-miles, and gross-tonne-days each capture a different segment of the heterogeneous service mix across tankers, bulkers, container ships, ro-ro ferries, gas carriers, and cruise vessels. The Commission determined that constructing a benchmark across that fleet would have been technically contested and administratively unworkable within the timescale of the Fit for 55 legislative package.

The carbon-leakage argument that underpins free allocation in steel, cement, and refining doesn’t map cleanly onto shipping. Leakage in land-based industry occurs when a regulated plant closes and production shifts to an unregulated site outside the EU. The shipping analogue is port substitution: a vessel reroutes via a transhipment hub outside the EEA to dilute its covered voyage fraction. Directive (EU) 2023/959 addresses this through anti-evasion provisions targeting neighbouring container transhipment ports rather than through a free-allocation buffer.

The third factor is policy maturity. When the ETS launched in 2005, free allocation was the political price of industry participation. By 2023, the Court of Justice had affirmed the polluter-pays principle in multiple ETS-related judgments, and the European Parliament had strengthened the auctioning default in successive revisions. Bringing a new sector in under the 2023 rules meant bringing it in at the policy standard of the day: full auctioning from the first compliance year.

The practical result: the entire shipping EUA demand, estimated by the Commission at approximately 79 million EUAs at full phase-in, flows into the auctioned pool. There is no allocation table and no free-permit registry. The compliance question for a shipping company reduces to how to source EUAs at the lowest expected total cost across auction, secondary spot, and forward markets.

Free allocation comparison across ETS sectors

It is worth stating the contrast with existing sectors in precise terms. Power generation has been fully auctioned since 2013 and received no free allocation in Phase IV. The power sector accepted this because the carbon cost passes directly into electricity prices. Industrial sectors at risk of carbon leakage, notably steel, cement, aluminium, and chemicals, receive free allocation calibrated annually by the Commission based on production activity and benchmark curves set to the top-decile performers in each sector. These free-allocation quantities decline over Phase IV but remain substantial: steel mills and cement plants still received tens of millions of free EUAs in 2024.

Aviation entered at 85 percent free in 2012 and is now on a legislated glide path to zero free allocation by 2027 under Directive (EU) 2023/959. Maritime entered at zero percent free in 2024 and stays there permanently. No Article 30 review provision creates a pathway to free allocation for shipping; the Commission’s mandate is to review scope extensions, not to reintroduce allocation mechanisms that were explicitly rejected at the drafting stage.

Scope: which ships and voyages are covered

The scope of the maritime ETS obligation under Directive (EU) 2023/959 is defined by three parameters: ship category and size, voyage category, and greenhouse gas type.

Ship category and size. The obligation applies to cargo ships and passenger ships of 5,000 GT and above. This threshold covers the vast majority of commercial deep-sea tonnage by emissions volume. General cargo ships and offshore vessels of 400 GT to 5,000 GT are required to monitor and report under Regulation (EU) 2015/757 from 2025 onward, with a Commission review by 31 December 2026 to determine whether they should be brought into the surrender obligation.

Offshore vessels of 5,000 GT and above have a separate start date: the surrender obligation applies from 1 January 2027, one year after full phase-in for the main fleet categories. This delay reflects the distinct operational pattern of offshore support and construction vessels, which operate partly outside standard voyage categories and for which the Commission elected to collect one further year of MRV data before triggering obligations.

Voyage category. Intra-EEA voyages (both departure and arrival at EEA ports) are covered at 100 percent of emissions on those voyages. Extra-EEA voyages (one leg involving a non-EEA port) are covered at 50 percent. Ships at berth in EEA ports are covered at 100 percent for their at-berth emissions. The voyage-level coverage fraction is computed per voyage using the departure and arrival port designations recorded in the monitoring plan. The EU ETS Scope Factor calculator applies this split.

The 50 percent rule for extra-EEA voyages reflects a policy judgment that shipping crossing international boundaries should bear half the carbon cost rather than the full amount, given that the other half of the voyage occurs outside European jurisdiction. The legislative history records that 100 percent coverage of extra-EEA voyages was considered but rejected to reduce the risk of flag-state trade disputes and WTO challenges.

Greenhouse gas coverage. CO2 is covered from 1 January 2024. Methane (CH4) and nitrous oxide (N2O) are added from 1 January 2026, using 100-year global warming potential values from the IPCC Fifth Assessment Report as referenced in Annex I of Directive 2003/87/EC. CH4 has a GWP of 28-34 over 100 years under the Fifth Assessment Report (the directive uses the lower bound of 28 tCO2e per tonne CH4 for ETS purposes). N2O has a GWP of 265. Both gases become material in the context of dual-fuel LNG engines, where methane slip from incomplete combustion can add several percent to the effective CO2-equivalent surrender obligation.

The greenhouse gas expansion from 2026 requires updates to monitoring plans and emission reports under Regulation (EU) 2015/757. Ships burning LNG in four-stroke and two-stroke engines need flow-metering methodology for CH4 slip, which the MRV regulation’s amendment process is addressing through EMSA technical guidelines. A company that correctly monitored CO2 from 2024 may need to revise its monitoring plan before 31 December 2025 to include CH4 and N2O tracking for the 2026 compliance year.

The phase-in surrender obligation: 40, 70, 100 percent

Directive (EU) 2023/959 introduced a three-year demand-side phase-in to reduce the immediate financial exposure of operators in the first compliance years. The phase-in operates by reducing the fraction of verified emissions for which EUAs must be surrendered. It does not reduce the cap or release additional EUAs; shipping companies still buy 100 percent of the EUAs they surrender.

The obligation for a given compliance year is:

The 40 percent figure for 2024 was calibrated in the Commission’s impact assessment to approximate the share of international shipping emissions that originate from EEA-covered voyages, keeping the first-year bill proportionate to the regime’s initial geographic reach. The step to 70 percent in 2025 adds a further 30 percentage points of obligation. Full compliance at 100 percent from 2026 onward aligns shipping with every other ETS sector, which has operated without a phase-in since Phase III.

A worked example across the three years: a ro-ro vessel on intra-EEA routes emits 50,000 tCO2 on covered voyages each year. Its surrender obligations are 20,000 EUAs for 2024 (due 30 September 2025), 35,000 EUAs for 2025 (due 30 September 2026), and 50,000 EUAs for 2026 and every year after (due 30 September of the following year). The EUA purchase cost doubles between the 2024 and 2026 compliance years under unchanged emissions and EUA price.

The phase-in is demand-side, not supply-side. In each of 2024 and 2025, the 60 percent and 30 percent of emissions not covered by a surrender obligation did not generate free EUAs for the shipping company. Those unticketed tonnes were simply outside the compliance boundary for that year. From 2026, every tonne of covered emissions on a covered voyage requires a bought-and-surrendered EUA.

First surrender deadline for shipping: 30 September 2025

The 30 September deadline is fixed in Article 12(2a) of Directive 2003/87/EC as inserted by Directive (EU) 2023/959. This differs from the 30 April deadline that applies to stationary installations (power plants, steel mills, cement plants) under the same directive. The later deadline for shipping and aviation reflects the longer verification cycle for voyage-based data: ship operators typically receive their verified emission report from the accredited verifier in June or July, leaving a two- to three-month window to acquire any shortfall EUAs before the September deadline.

A company that starts acquiring EUAs in January of the surrender year and spreads purchases across the year can smooth both price risk and cash-flow. A company that waits until August runs a larger inventory risk: end-of-year EUA demand from power generators and industrial installers also tends to be concentrated, and prices can firm in the August-September window if weather, production levels, or political news creates unexpected demand.

Missing the 30 September deadline by even one business day constitutes non-compliance for that year. There is no cure period. The EUR 100 per-tonne penalty is assessed against the shortfall measured at the close of 30 September, and the obligation to surrender the missing EUAs runs separately and indefinitely until fulfilled.

The responsible entity: ISM company and administering authority

Article 3(w) of Directive 2003/87/EC, inserted by Directive (EU) 2023/959, defines “shipping company” as the shipowner, or any other organisation or person that has assumed the responsibility for the operation of the ship from the shipowner and that, on assuming such responsibility, has agreed to take over all the duties and responsibilities imposed by the International Safety Management Code. In operational terms, this is the entity holding the Document of Compliance (DOC) under the ISM Code.

Where no ISM company is identified, or where the ISM company is not registered in a Member State and cannot be assigned to a Member State under the port-call rules, responsibility passes to the registered owner. The default to registered owner is a backstop, not the normal case: most vessels of 5,000 GT and above operating on international trades will have an identified DOC holder.

The structure has direct commercial implications. A shipowner who bareboat-charters a vessel to a bareboat charterer that takes over ISM management becomes, in ETS terms, no longer the shipping company for that vessel for the period of the bareboat charter. The bareboat charterer who holds the DOC is the responsible entity and must hold the Union Registry account and surrender EUAs. A time charterer who does not assume ISM responsibility is not the shipping company and is not directly liable to the administering authority; its obligation to reimburse the owner’s EUA cost is a commercial contractual matter, not a regulatory one.

Administering authority assignment

The administering Member State is the national authority responsible for overseeing a given shipping company’s ETS compliance. Assignment follows a priority hierarchy under Article 3gf of Directive 2003/87/EC. The first criterion is the Member State where the shipping company is registered. For companies registered outside the EEA, the administering authority is the Member State with the greatest number of port calls by that company’s fleet within the EEA over the preceding four monitoring years, calculated on 1 February of the relevant year.

The four-year rolling average dampens year-to-year variation from port substitution or fleet redeployment. It also means that a company newly active in EEA waters may not immediately acquire an administering Member State based on recent calls; it needs four years of monitoring history to trigger the assignment. The Commission publishes the full list of shipping companies and their assigned administering authorities annually, updated each February.

The administering authority has seven powers relevant to allowance allocation and surrender: it holds the company’s Union Registry account, receives verified emission reports, issues compliance status confirmations, assesses penalties for shortfall, can request vessel expulsion from EEA ports after two consecutive non-compliance years, accepts surrender transfers, and issues cancellation confirmations. For practical purposes, a company whose administering authority is, say, the Dutch Emissions Authority (NEa) deals with NEa for registry, compliance, and enforcement, regardless of where the company is commercially domiciled.

Vessel banning under Article 16(11a)

Non-compliance carries a mechanism that goes beyond financial penalty. Under Article 16(11a) of Directive 2003/87/EC, where a shipping company has failed to surrender sufficient EUAs for two or more consecutive years, the administering authority may request that any Member State detain or deny entry to the non-compliant vessel. The Member State contacted by the administering authority may refuse entry to that vessel into any port under its jurisdiction.

The expulsion mechanism makes ETS compliance a port-access question, not just a fine. A vessel that misses two successive 30 September deadlines can find itself barred from EEA ports until compliance is restored. Given that EEA ports handle a substantial share of world container, bulk, and energy trade, exclusion is commercially catastrophic for most operators. This mechanism is borrowed from the aviation ETS enforcement design, where aircraft operators banned from EEA airspace face equivalent commercial pressure.

MRV foundation: Regulation (EU) 2015/757 and THETIS-MRV

The surrender obligation has no independent data source. It rests entirely on the verified emissions figure produced under Regulation (EU) 2015/757 on monitoring, reporting and verification of CO2 from maritime transport, as amended by Commission Delegated Regulation (EU) 2023/2831 to align with the expanded ETS scope.

Under this regulation, the shipping company submits a Monitoring Plan to an accredited verifier before the start of each reporting year. The plan specifies the measurement methodology for fuel consumption: bunker delivery notes (BDNs), flow meters, bunker tank sounding, or direct CO2 measurement. It also defines the emission factors per fuel type, the voyage categorisation rules, and from 2026 the methodology for CH4 and N2O monitoring. The verifier audits and approves the plan before the reporting year begins.

At year-end, the shipping company compiles the Annual Emission Report covering every voyage in scope, fuel consumed by type per voyage, and CO2 (and from 2026, CH4 and N2O) emitted per voyage. The verifier examines the report against the monitoring plan, conducts risk-based sampling of voyage records and bunker documents, assesses material misstatements, and issues a Statement of Verification. That statement confirms whether the report is free from material misstatement and whether the monitoring methodology was applied consistently.

The final verified figure is uploaded to THETIS-MRV, the electronic platform maintained by the European Maritime Safety Agency (EMSA) under its mandate from the Commission. THETIS-MRV publishes verified data publicly each year after the verification window closes. The figure in THETIS-MRV is the authoritative input to the ETS surrender calculation: regulators, trading counterparties, and charter parties all reference the same public dataset.

Verification error consequences

A verification error that understates emissions will result in a surrender shortfall, triggering the EUR 100 per-tonne penalty and a follow-on obligation to surrender the missing EUAs. A verification error that overstates emissions produces a surplus EUA holding that cannot be recovered from the regulator and must be sold back on the market. Accuracy in the MRV process therefore has direct P&L consequences beyond administrative compliance.

The MRV regulation’s materiality threshold is set at 5 percent of total reported emissions or 2 percent for larger vessels, meaning a verifier will not flag a misstatement below those levels as material. In practice, this materiality threshold is low enough that most annual reports with competent monitoring plans will receive clean statements of verification. Where a verifier issues a qualified or adverse statement, the administering authority typically requests a restatement before accepting the figure for surrender purposes.

The EU MRV data creates a public record. Researchers, environmental NGOs, port authorities, and cargo interests can download verified emission figures by vessel from THETIS-MRV and compare them against declared efficiency claims or advertised carbon-neutral freight offerings. The MRV Crosswalk calculator /calculators/eu-mrv-ets-crosswalk converts MRV-reported figures into ETS surrender obligations, including the phase-in adjustment and scope factor.

How EUAs are acquired: primary auction

Because shipping companies receive no free EUAs, every surrendered allowance must be purchased. The primary acquisition route is the EUA primary auction. EUAs are sold by Member States under the EU Auctioning Regulation, Commission Regulation (EU) No 1031/2010, through the European Energy Exchange (EEX) in Leipzig, which has operated as the common auction platform since 2013.

The auction format is a single-round, sealed-bid, uniform-price mechanism. Eligible bidders submit price-and-quantity bids during a defined two-hour window. EEX aggregates bids in descending price order, draws a cutoff at the volume offered, and all successful bidders pay the marginal clearing price. The clearing price is published immediately and becomes the reference for secondary-market transactions that day.

To bid directly, a shipping company must complete the EEX admission process, which requires establishing a clearing relationship with European Commodity Clearing AG (ECC), completing KYC and anti-money-laundering procedures, holding an account in the Union Registry, and satisfying any minimum capital or margin requirements imposed by ECC. In practice, fewer than ten shipping companies bid directly at EEX auctions as of 2024. The majority source EUAs through admitted intermediaries: investment banks, specialist carbon brokers, and energy trading desks, which charge a per-EUA spread over auction clearing price.

The auction calendar is published annually by EEX and runs on most working days. Daily auction volumes in 2024 ranged from roughly 2 million to 4 million EUAs per session. Maritime EUAs are not auctioned in a separate maritime tranche: shipping companies bid into the common ETS pool alongside power generators, steel plants, cement makers, airlines, and refiners. The absence of a dedicated maritime auction window means that a large shipping fleet entering the market for the first time in 2024 competed directly against decades-experienced industrial compliance buyers.

How EUAs are acquired: secondary market

The secondary market is where most EUA volume actually trades, and it is where most shipping companies will source the bulk of their EUAs in practice. Three instrument families are relevant.

Spot EUAs are purchased and delivered within one or two business days, settling into the buyer’s Union Registry account. Spot liquidity on EEX and on bilateral over-the-counter (OTC) markets consistently exceeds 5 million EUAs per day. Spot purchase is the simplest route for a company that needs EUAs close to the 30 September surrender deadline and is not running a forward hedging programme.

EUA futures are standardised contracts for physical delivery of EUAs on the December expiry. Because the December contract delivers EUAs into the Union Registry, it is directly usable for surrender purposes if held to maturity. A shipping company that buys December 2026 futures in January 2026 locks in its purchase price for EUAs it will surrender on 30 September 2027, provided it allows the contract to go to physical delivery. Open interest in the December EUA futures contract typically runs in the hundreds of millions of EUAs. Maturities list out to December 2030. The forward curve is in mild contango reflecting the funding cost of holding EUAs, with a small additional premium for policy uncertainty.

EUA options allow a company to cap upside price exposure while retaining the ability to buy at spot if prices fall. Call options on December EUA futures are listed on major derivatives exchanges, with strikes across the price distribution and maturities up to the end of the Phase IV period. Implied volatility on EUA options has ranged from roughly 30 percent to 80 percent annualised between 2022 and 2024, well above most physical commodity volatility regimes. High implied volatility means option premiums are material, and a hedging programme that relies heavily on options rather than futures will carry a higher total EUA cost in most scenarios.

For a shipping company with a large, predictable annual EUA obligation, the standard approach is a laddered buying programme: acquire a fraction of the estimated obligation each month across the compliance year, spread across primary auctions and secondary spot or short-dated forwards, with the exact monthly slice adjusted for price level relative to a cost budget. This approach averages the purchase price and avoids the concentration risk of buying the entire year’s obligation in a single transaction.

The surrender process: Union Registry and the 30 September deadline

The Union Registry is the electronic ledger maintained under Commission Regulation (EU) 2019/1122 that records every holding, transfer, surrender, and cancellation of EUAs. Every shipping company with an ETS surrender obligation must hold an Operator Holding Account in the Union Registry of its administering Member State. The account must be opened before the first compliance year and requires submission of identity documentation, beneficial ownership disclosure, and anti-money-laundering checks to the national registry administrator.

The surrender process for a given compliance year follows four steps. First, the shipping company’s Annual Emission Report is accepted and verified under THETIS-MRV, confirming the tCO2 (and from 2026, tCO2e) figure for the calendar year just ended. Second, the administering authority opens the surrender window, typically in late August of the surrender year. Third, by 30 September, the shipping company executes a surrender instruction in the Union Registry, transferring EUAs from its Operator Holding Account to the Surrender and Cancellation Account of the administering Member State. Fourth, the EUAs transferred into the surrender account are cancelled: permanently removed from circulation, never re-entering the market.

The surrender is irrevocable. Once EUAs are transferred to the surrender account, they cannot be recalled. A company that accidentally transfers more EUAs than required has surrendered the excess; it will need to buy replacement EUAs if it needs them for any other purpose. This makes the surrender instruction a financial transaction that should be verified for quantity accuracy before execution.

The Union Registry transaction is the only mechanism for demonstrating compliance. A shipping company that has purchased EUAs but not yet transferred them to the surrender account by midnight on 30 September is technically non-compliant for that year, regardless of its EUA holdings. Timing the transfer correctly is an operational task distinct from the procurement task.

Penalty structure for non-surrender

The non-compliance penalty under Article 16 of Directive 2003/87/EC is EUR 100 per tonne of verified emissions not covered by surrendered EUAs, adjusted for inflation against the European consumer price index from the 2013 base. On the 2024 to 2026 phase-in, the penalty applies to the phase-in fraction only: a company with 100,000 tCO2 of covered emissions in 2024 that surrenders 30,000 EUAs rather than the required 40,000 faces a penalty on 10,000 tonnes, not 100,000 tonnes. From 2026, the penalty applies to any shortfall against 100 percent of covered emissions.

The penalty is a fine, not a carbon price. It does not represent surrender of the missing EUAs. The company still owes the EUAs and must surrender them in addition to paying the fine. The total cost of non-compliance is therefore the penalty per tonne plus the prevailing EUA price per tonne, which at EUR 75 to EUR 100 per EUA through 2024 to 2026 means the penalty effectively doubles or trebles the cost of the shortfall versus timely compliance.

Contrast with aviation’s free-allocation history

Aviation entered the EU ETS on 1 January 2012 under Directive 2008/101/EC with 82 percent of its cap distributed as free allowances to airlines based on tonne-kilometres flown in the 2010 monitoring year, with 15 percent auctioned and 3 percent in a new-entrant reserve. The free pool persisted with adjustments through Phase IV. Directive (EU) 2023/959 phases aviation’s free allocation to zero: 75 percent free in 2024, 50 percent in 2025, 25 percent in 2026, and 0 percent from 2027.

Maritime had no analogous transition. The 2023 amendment skipped grandfathering, skipped benchmarks, and started at zero free allocation from 1 January 2024. The phase-in (40 percent in 2024, 70 percent in 2025, 100 percent from 2026) reduces the fraction of emissions that require EUAs but doesn’t grant free EUAs for any fraction. Where an airline in 2012 received 82 free EUAs for every 100 tonnes of covered emissions and bought 18, a ship operator in 2024 received 0 free EUAs and bought 40 for every 100 tonnes of covered emissions.

The policy difference reflects both the timeline and the political economy. Aviation lobbied effectively during the 2008-2009 drafting of Directive 2008/101/EC and secured a generous grandfathered free-allocation pool. Maritime was not brought into the ETS until 2023, by which time the policy consensus had shifted decisively toward auctioning as the default. The Fit for 55 package design explicitly rejected special treatment for maritime, citing the polluter-pays principle and the absence of a carbon-leakage risk from voyage carbon pricing comparable to the leakage risk in energy-intensive industry.

Auction revenue and the Innovation Fund

EUA auction revenue is collected by Member States. At least 50 percent is earmarked for climate-related expenditure under Article 10(3) of Directive 2003/87/EC. Directive (EU) 2023/959 added a maritime-specific layer: Member States must direct a defined share of maritime auction proceeds to the Innovation Fund (Article 10a(8)) and the Modernisation Fund (Article 10d).

The Innovation Fund finances low-carbon technology demonstration projects including green ammonia and methanol bunkering infrastructure, dual-fuel newbuild retrofits, on-board carbon capture, wind-assisted propulsion systems, and shore-side power installations at ports. Grants are administered by CINEA, the European Climate, Infrastructure and Environment Executive Agency, covering up to 60 percent of relevant capital expenditure per project. Maritime applications are eligible under both the Large-Scale window (EUR 100 million to EUR 500 million per project) and the Medium-Scale window.

The Modernisation Fund supports energy-system modernisation in ten lower-income Member States: Bulgaria, Croatia, Czechia, Estonia, Hungary, Latvia, Lithuania, Poland, Romania, and Slovakia. For shipping, the most direct benefit is port electrification investment in those states that reduces at-berth auxiliary engine emissions, which are covered at 100 percent for ETS purposes.

Aggregate maritime ETS auction revenues across 2024 to 2030 are estimated by the Commission at approximately EUR 20 billion at an EUA price near EUR 80 per tonne. A fraction of that pool returns to the shipping sector through Innovation Fund grants for decarbonisation projects. The recycling is indirect: the revenue flows to national budgets, then to the Commission-managed fund, then to grant recipients by open competition. A shipping company that pays EUR 5 million in EUAs across 2024 does not receive EUR 5 million in Innovation Fund grants; it competes for grants on merit alongside every other eligible maritime applicant.

For the detailed treatment of the Innovation Fund’s maritime window and grant eligibility criteria, see /wiki/eu-ets-innovation-fund-maritime.

Interaction with FuelEU Maritime

The EU ETS and FuelEU Maritime Regulation create two separate compliance obligations for ships of 5,000 GT and above. They measure different things, use different instruments, and cannot be cross-offset.

The ETS measures total CO2-equivalent emissions on covered voyages and requires EUAs equal to the verified total, adjusted by the phase-in factor. A ship that reduces its CO2 emissions pays fewer EUAs in absolute terms but is not excused from the FuelEU obligation.

FuelEU Maritime measures the average greenhouse gas intensity of energy used on board, expressed in gCO2e per MJ, against a declining annual target derived from a 2020 baseline of 91.16 gCO2e/MJ. The target declines by 2 percent from 2025, then by steeper steps in subsequent phases. A ship that exceeds the FuelEU intensity target owes a penalty or must pool compliance with ships below the target. Its ETS surrender obligation is entirely unaffected.

A ship with a strong FuelEU compliance position cannot apply its FuelEU surplus against its ETS surrender obligation. The two obligations are legally and instrumentally separate. The FuelEU compliance balance calculator and the EU ETS EUA Liability calculator address distinct regulatory instruments and should be run independently.

The two systems also differ in scope. FuelEU applies to energy used at sea and at berth within EEA ports. ETS applies to voyage-level CO2-equivalent emissions using the 100 percent intra-EEA, 50 percent extra-EEA, and 100 percent at-berth coverage fractions. A voyage from Singapore to Rotterdam (extra-EEA) generates an ETS obligation on 50 percent of its CO2, but FuelEU applies to the energy used across the entire leg ending at Rotterdam (the inbound extra-EEA leg). The two regulations use different voyage categorisation rules, and a company’s compliance position under each must be assessed separately.

See /wiki/eu-ets-fueleu-double-regulation for the detailed interaction, including the methane-slip calculation from 2026 where both systems account for CH4 using different methodologies.

Cost passthrough in charter parties

The shipping company is the registered responsible entity under the ETS but in commercial practice the EUA cost is typically passed to the charterer or cargo interest. The mechanism depends on the charter type.

Under a time charter, the time charterer has operational control of the vessel’s voyages and therefore determines the fuel consumption, voyage selection, and emissions profile. Modern time-charter contracts include an ETS clause that requires the time charterer to provide EUAs or reimburse the cost equivalent, calculated as verified covered emissions times phase-in factor times a reference EUA price per tonne. The market-standard clause structure defines a quarterly settlement in EUAs or cash, with reference price drawn from a published spot index at a defined fixing date.

Under a voyage charter, the voyage charterer nominates the voyage and the cargo. The cargo owner ultimately bears the freight cost including any ETS charge embedded in the freight rate. On competitive routes where cargo has substitute access to non-EEA port options, the passthrough may be incomplete and partially absorbed by the shipowner through margin compression. On routes where EEA port calls are operationally compulsory, such as North Sea dry bulk discharge, Iberian liquid bulk terminals, and North European container feeder routes, the passthrough is close to full.

Major liner carriers publish an Emissions Trading Surcharge as an explicit per-TEU line item on bills of lading, updated quarterly to reflect changes in the EUA price and the phase-in factor. For a 40-foot dry container on a Far East to North Europe trade lane in 2024, the ETS surcharge from carriers was typically EUR 25 to EUR 50 per box, reflecting the 50 percent extra-EEA scope and the 40 percent phase-in factor applied to a per-voyage CO2 estimate per TEU.

The EU ETS EUA Liability calculator estimates voyage-level EUA costs from fuel consumption or CO2 inputs. The EU ETS Allowance Surrender Schedule calculator aggregates fleet-level obligations across a full compliance year, feeding directly into chartering-desk pricing models. For the detailed treatment of the surrender transfer mechanics and Union Registry procedures, see /wiki/eu-ets-surrender-mechanics-shipping.

Limitations

This article describes the allocation and surrender mechanics as set out in Directive (EU) 2023/959 and Directive 2003/87/EC. Several areas remain under active regulatory development.

The treatment of general cargo and offshore vessels of 400 GT to 5,000 GT is subject to a Commission review due by 31 December 2026. If extended, the compliance year, phase-in schedule, and scope rules will be set by that report and a subsequent amending directive. No date is fixed for when any extension would take effect.

The CH4 and N2O surrender obligation from 2026 depends on verified monitoring methodologies that are still being developed for the maritime context. In particular, per-fuel-type default emission factors for methane slip from LNG dual-fuel engines in four-stroke and two-stroke configurations, and N2O factors from exhaust gas cleaning systems, are the subject of ongoing work under Regulation (EU) 2015/757 amendments. Companies planning to operate LNG-fuelled vessels in 2026 should track the technical guidelines being issued by EMSA on this point.

EUA price references in this article are illustrative. Actual prices at the time of any given surrender depend on auction demand, Market Stability Reserve intake, front-loaded supply from the REPowerEU plan, and political risk from future legislative review. The 30 September deadline and the 40/70/100 percent phase-in percentages are fixed in primary legislation and require a co-decision amendment to change.

The administering authority assignment is recalculated annually on 1 February on a rolling four-year port-call average. A shipping company that changes its operational footprint may find its administering authority shifting, altering the registry jurisdiction, the language of official correspondence, and the enforcement approach, though not the substantive ETS obligation.

Union Registry operational risk is real. Registry outages, failed transfers, or settlement errors close to the 30 September deadline can put a company at technical risk of non-compliance even if it holds adequate EUAs. Prudent operators execute the surrender transfer at least five business days before the deadline to allow time to resolve any registry issues.

See also

• /wiki/eu-ets-for-shipping
• /wiki/eu-ets-maritime-scope-phase-in
• /wiki/eu-ets-surrender-mechanics-shipping
• /wiki/eu-ets-fueleu-double-regulation
• /wiki/eu-ets-innovation-fund-maritime
• /wiki/fueleu-maritime-explained
• /wiki/fueleu-compliance-balance-pooling
• /wiki/marine-gfs-methodology
• /wiki/imo-net-zero-framework
• /wiki/uk-ets-for-shipping
• /calculators/eu-ets-eua-liability
• /calculators/eu-ets-scope
• /calculators/eu-ets-phase-in
• /calculators/eu-ets-pool-surrender
• /calculators/fueleu-compliance-balance
• /calculators/eu-mrv-ets-crosswalk