Franco-Dutch airline holding company Air France-KLM (<a href="https://live.euronext.com/en/product/equities/fr001400j770-xpar/air-france--klm/af" target="_blank">EPA:AF</a>) has agreed to invest in DG Fuels LLC to support the development of its project for a sustainable aviation fuel (SAF) plant in Louisiana and has also committed to buying an additional amount of biofuel from the US biosynthetic fuel producer.