Sustainable aviation fuels (SAFs) will be crucial to decarbonise aviation in the short term. Available as a certified drop-in fuel and blended with conventional jet fuel, SAFs offer the potential to contribute to a net zero aviation industry given that lifecycle assessments could generate a possible 80 CO_2 emission reduction. Unfortunately, SAFs are not widely available though and the current production capacity is sufficient for only 0.01 of worldwide jet fuel demand. In addition, current costs are likely to be prohibitive for commercial uptake as well as the fact that the cost of bio-based fuels is many times that of fossil jet fuel.
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