Clean fuel standards (CFSs) are regulations which reward or penalise transport fuels based on their lifecycle greenhouse gas emissions — in particular, their emissions with respect to a ‘compliance standard’ which tightens each year. A number of CFSs are already in operation around the world. Our paper published in the journal Energy Policy examines a […]
The EU’s ReFuelEU Aviation and the UK’s SAF Mandate place requirements on fuel suppliers to bring alternative aviation fuels to market. In parallel, financial support for alternative fuels comes from the EU’s reimbursement scheme, which subsidises some fraction of the cost difference paid by airlines, and the UK’s guaranteed strike price (GSP), which shields SAF […]
How e-fuels can mitigate biodiversity risk in EU aviation and maritime policy This report, commissioned by Opportunity Green on behalf of the Skies and Seas Hydrogen-fuels Accelerator Coalition (SASHA), explores the biodiversity risks associated with the EU’s efforts to decarbonise aviation and maritime transport. The ReFuelEU Aviation and FuelEU Maritime regulations aim to engender a […]
In this paper for the International Council on Clean Transportation we consider the industrial development implications of the targets for alternative aviation fuel supply that are being introduced throught he UK’s SAF Mandate.
Alternative fuels have been identified as an important tool to reduce the climate change impact of the aviation industry, but there are many challenges associated with increasing the production and use of these fuels in a sustainable way. In this series of reports for the Aviation Environment Federation we discuss issues relating to the lifecycle […]
This report for the Spanish NGO Ecologistas en Acción considers the potential for the development of an aviation biofuel industry in Spain. It notes that it may be challenging to reorient existing renewable diesel capacity to aviation fuel production because of the need to find non-food feedstocks if the fuel is to be counted under […]
As part of the Green Deal, the European Commission has launched the “ReFuelEU Aviation Initiative” to increase the role of “sustainable aviation fuels” in EU aviation. This report for Transport and Environment discusses the potential supply of different SAF categories in 2030, and what might be required to deliver a rapid supply expansion. This includes […]
In partnership with the Rainforest Foundation Norway, this report reviews the threat to tropical forests from continued expansion of mandates for palm- and soy-oil based biofuels.
The aviation industry identifies ‘sustainable aviation fuels’ as a key tool to manage the growing climate impact of aviation. There are, however, fundamental differences between the sustainability risks associated with the scaling up of the different available alternative aviation fuel technologies. At present, the only alternative aviation fuel technology that is operational at commercial scale […]
Methodology for assessing greenhouse gas emissions savings from low-carbon fuelsSeptember 12, 2025
A federal clean fuel standard (CFS) for the USASeptember 5, 2025
Staying Aloft: Support Mechanisms for ‘Sustainable Aviation Fuels’ in the United Kingdom and European UnionJuly 24, 2025
Global Automaker Rating 2024July 3, 2025
Cerulogy 2022