What is the biggest obstacle to widespread adoption of sustainable aviation fuels?

The biggest obstacle to widespread adoption of sustainable aviation fuels (SAF) is their high cost relative to conventional jet fuel. Sustainable aviation fuels (SAF) are alternative fuels that can reduce the carbon footprint of air travel compared to traditional kerosene-based jet fuel. SAF can be produced from a variety of sources, including biomass, algae, waste materials, and captured carbon dioxide. While SAF offer a promising pathway to decarbonizing the aviation sector, their production costs are currently significantly higher than those of conventional jet fuel. This cost differential makes it difficult for airlines to switch to SAF without increasing ticket prices or reducing profitability. The high cost of SAF is due to several factors, including the limited availability of sustainable feedstocks, the complex and energy-intensive production processes, and the lack of economies of scale. Government policies and incentives, such as tax credits and mandates, can help to reduce the cost gap and encourage the adoption of SAF, but widespread adoption will require significant reductions in production costs. While other challenges, such as ensuring the sustainability of SAF feedstocks and addressing infrastructure limitations, also exist, the high cost remains the most significant barrier to the widespread use of SAF.