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Why and how to bring down the cost of SAF
Today, sustainable aviation fuel (SAF) generally costs between 2 and 5 times more than fossil jet fuel.
Why SAF is expected to play a larger role in near- and medium-term decarbonization than zero-emission aircraft
As the aviation industry works toward net-zero carbon emissions by mid-century, one thing is clear: sustainable aviation fuels (SAFs) are expected to be the primary decarbonization lever.
Cloudy with a chance of soot: The role of fuel composition in aviation’s non-CO2 impact
Robust sustainability criteria prioritizing minimal life-cycle carbon intensity can help to ensure that sustainable aviation fuels (SAFs) are truly low carbon, which is crucial to achieving aviation’s 2050 net-zero target.
Who gets credit when SAF is used on a flight?
How do airlines know how much SAF is used on their flights, and how does SAF use by airlines affect your personal carbon footprint? Welcome to the world of SAF accounting.
Understanding the greenhouse gas emissions of different SAF pathways
We can understand the differing greenhouse gas (GHG) emission benefits of using sustainable aviation fuels (SAFs) by comparing their life-cycle emissions with the emissions of fossil jet fuel.
Why reconsider counting SAF combustion as carbon neutral?
In this piece, we explore an accounting convention adopted by the Intergovernmental Panel on Climate Change (IPCC) and most regulators, including the International Civil Aviation Organization, that treats biofuel combustion emissions as zero.
Cruise the seas or cruise down the road? A fresh look at vacation emissions
A two person, weeklong road trip would result in less than one-third of the life-cycle GHG emissions of a weeklong cruise, including hotel stays and flights.
Four changes would make the IMO Net-Zero Framework more effective
On April 11, the International Maritime Organization’s 83rd Marine Environment Protection Committee approved regulations under the IMO Net-Zero Framework. To make the framework effective, the IMO should address four key issues in its Life-Cycle Assessment Guidelines before full implementation in 2028. Otherwise, the framework risks promoting cheap-but-high-emitting fuels that could increase maritime GHG emissions.
Supersonic aircraft: Twice as nice, or double the trouble?
Startups aiming to develop supersonic aircraft see a bright future, despite the high carbon intensity of their designs. But given evidence that supersonic aircraft will burn seven times more fuel per seat than subsonic aircraft, is there really room for supersonics in a net-zero future?
The risks of betting on biofuels with flex-fuel plug-in hybrid cars in Brazil
Explores the greenhouse gas emissions risks associated with using flex-fuel plug-in hybrid cars with biofuels in Brazil as an alternative to battery electric vehicles in the context of the country’s climate goals.
Os riscos da aposta em carros híbridos plug-in flex-fuel no Brasil
Explora os riscos associados ao uso de carros híbridos plug-in flex com biocombustíveis no Brasil como uma alternativa aos veículos elétricos a bateria (BEVs) no contexto das metas climáticas do país.
Aligning the IMO’s Greenhouse Gas Fuel Standard with its GHG strategy and the Paris Agreement
Explores how the GHG Fuel Standard (GFS) can be designed to align with the International Maritime Organization’s (IMO) GHG strategy and the Paris Agreement.
