A growing debate is playing out across Europe’s aviation industry over a specific part of the EU’s plan to decarbonize flying: the mandate to use advanced synthetic green fuels that, as of today, don’t exist at scale.
eSAF, or electro-sustainable aviation fuel, is a different product from SAF, the lower-carbon jet fuel airlines have been using, albeit in small amounts.
The SAF in use today is largely made from waste products like used cooking oil and animal fats. eSAF is produced by capturing carbon dioxide and combining it with hydrogen using a system powered by renewable energy, a process known as power-to-liquid.
It is widely regarded as the ultimate green aviation fuel, with the ability to reduce carbon dioxide emissions from flying by up to 90%, and, at
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