Big potential news for maritime decarbonisation from the European Commission.

EU ETS & FuelEU Maritime Jul. 20, 2026
Big potential news for maritime decarbonisation from the European Commission.

As part of its wider post-2030 EU ETS revision, the European Commission has proposed a new Sustainable Maritime Alternative Propulsion (SMAP) mechanism. If approved, it would reserve up to 110 million ETS allowances to help close the cost gap between conventional and renewable marine fuels. Here's what stands out to us.

How the support would work


Shipowners would claim allowances based on their use of eligible sustainable fuels and technologies in the prior year. The Commission would assess the price gap versus the fossil equivalent and allocate a share of allowances accordingly: 55% of the gap for advanced biofuels and biogas (RED Annex IX Part A feedstocks), 90% for RFNBOs, 80% for low-carbon hydrogen and other low-carbon fuels, and 90% of the additional cost for zero-emission propulsion technologies. Those allowances can then be sold or used to lower ETS compliance costs.
 
How this is worked into procurement may not be straightforward. The mechanism is not necessarily a fixed rebate of a set number of EUAs. The allocation is indexed to the perceived cost gap and an assumption would have to be made about the EUA price. The Commission was explicit that the value in the allowances would not necessarily equal the share of the cost gap it intends to cover. In practice it may still mean a fixed number of EUAs per tonne of fuel.

However, the value of the rebate is difficult to determine. Whether that fixed number is known before lifting will matter a great deal for fuel-type planning as there are possible forward contract solutions that could flatten price fluctuations. Either way, the real benefit will move with both the assessed price differential and the EUA price itself.

 

 

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A question on EU-origin feedstock

Eligible fuels would generally need to be produced in the EU or an ETS-linked jurisdiction, with a further support bonus where the feedstock itself is EU-sourced. So could we see upward pressure on the price of EU-origin feedstocks, and the fuels made from them? If so, mass balancing could become a valuable tool for steering EU-origin proofs of sustainability toward where they earn the most support. The alternative dynamic is the green corridor waiver: voyages between EU ports and approved non-EU ports could be exempted from the EU-origin production rule, which would support biofuels on a more global footing. Two exciting aspects of the mechanism, and of what its implementation could mean. We'll be watching how it lands.
 

Worth noting too: UCO-based feedstocks (Annex IX Part B) would not qualify for SMAP support, though they remain usable for FuelEU Maritime compliance.

Timeline


 
The proposal still needs approval from the European Parliament and member states, a process expected to take 12 to 18 months. The start date is not yet fixed, with either 1 January 2028 or the first year after the revised directive enters into force on the table.
 
That could make 2028 an interesting year for fuel decisions. With FuelEU Maritime and the EU ETS both live, and this revision potentially on top, there will be more for purchasers to consider than there is now. Do you consume more low-carbon fuel to generate a surplus, or just enough to stay compliant? And if SMAP lowers the cost of generating that surplus, what does that do to pooling prices? It changes the rules, and that makes it interesting.


 
Our New Fuels team is following this proposal closely.