The widespread use of sustainable aviation fuels (SAF) is seen as a key lever for aviation to become CO2-neutral by mid-century. With the aviation sector under growing pressure to reduce emissions effectively, a rapid scale-up of SAF production and use is urgently needed. In this context, it is crucial to design SAF accounting models in a way that best help facilitate scale-up of production, access additional demand, as well as provide for high environmental integrity of SAF claims.
Book and claim is a chain-of-custody model in which the sustainability information is de-coupled from the physical product (i.e. SAF). This allows for the SAF’s associated sustainability information or attributes (such as the GHG emissions reduction) to be transferred from the seller to the buyer without them necessarily being connected through a physical SAF supply chain.