The European Commission has confirmed plans to "propose a targeted review" of the EU's renewable hydrogen production rules in the second quarter and to step up support for synthetic aviation (e-SAF) and marine fuels (e-SMF).
The announcement came in the AccelerateEU – Energy Union communication published on 22 April. The review will come ahead of the next scheduled assessment of the rules, due by July 2028.
Industry participants and EU member states have long pushed for looser rules on additionality and temporal matching under the renewable fuels of non-biological origin (RFNBO) delegated act, with calls for extensions until 2035.
The final text differs from a leaked draft by adding that the review will be "safeguarding existing investments". The review will support industrial decarbonisation and accelerate the development of e-SAF and e-SMF, the commission said.
The commission will also "further clarify" methodologies for using renewable hydrogen and biomass together as feedstocks for e-SAF production, while maintaining "ambitious sustainability criteria, including additionality, accurate lifecycle emissions accounting and the avoidance of double counting".
The commission is weighing greater support for SAF through the ETS "in terms of volume and duration", and will explore "an analogous mechanism" for EU-produced SMF. It will continue to back the Early Movers Coalition in organising the announced €2bn ($2.35bn) double-sided e-SAF auction and "encourage further participation by member states".
The text also reaffirmed plans to launch a consultation by 30 June on a draft methodology for "alternative approaches" to recognising nuclear electricity in hydrogen and derivative production. This was already set out when the commission in 2025 finalised the low-carbon hydrogen delegated act, which does not include a specific pathway for nuclear-based power purchase agreements. A final assessment is due by 1 July 2028, although the exact timeline remains unclear.
Hydrogen and derivative projects may also benefit from the wider ETS review. The commission plans to scale up clean energy financing through the €100bn Industrial Decarbonisation Bank, funded by 400mn ETS allowances, and will introduce an "investment booster" aimed at energy-intensive industries.

