Bill Gates established Breakthrough Energy in 2015 with the aim of funding technologies that can accelerate the clean energy transition and build a net-zero emissions future. Sylvain is joined by Mariano Berkenwald, Senior Associate at Breakthrough Energy, to discuss which efforts are needed to accelerate the deployment of at-scale production of Sustainable Aviation Fuel (SAF). They touch upon the need for more risk-tolerant capital, long-term off-take agreements with airlines, technologies that can scale globally, and a general acceptance that the era of inexpensive flights may be coming to an end.