American Airlines has signed a supply agreement for electronically derived sustainable aviation fuel (eSAF), with a purchasing group that includes Google and McKinsey, FlightGlobal reports.

The deal ties one of the largest US carriers to a next-generation fuel pathway that remains in scarce commercial supply. Unlike conventional SAF produced from waste oils and fats, eSAF is synthesized using captured carbon dioxide and hydrogen generated from renewable electricity — a process the industry regards as a long-term solution to aviation's decarbonization challenge, but one that currently accounts for a fraction of global SAF output.

Neither the volumes nor the financial terms of the agreement appear in the report. What is clear is the structure: corporate customers with large travel footprints, including Google and consultancy McKinsey, are pooling demand to underwrite fuel purchases that no single airline could economically justify on its own.

This model reflects a broader shift in how airlines finance SAF. Corporate travel buyers face their own emissions-accounting pressures, and fuel purchased on their behalf can be attributed to business-travel footprints through book-and-claim systems. For American, the arrangement creates a funded route to SAF volumes it might otherwise struggle to secure, given that SAF supply remains constrained and prices run well above conventional jet fuel.

Google has pursued similar structures before. The technology company has previously backed SAF purchase agreements in Europe, including a deal with Airbus, and has funded SAF purchases tied to its own corporate flying. McKinsey, which advises airlines and energy companies on the energy transition, brings its own substantial business-travel demand to the group.

For American, the agreement supports commitments it has already made public. The carrier, a member of the oneworld alliance, has set a target of replacing 10% of its jet fuel with SAF by 2030. Reaching that goal depends on supply that does not yet exist at the required scale in the United States, where SAF production capacity remains limited and policy support under federal and state incentive programs is still maturing.

The regulatory backdrop adds weight to the timing. The FAA and international bodies have certified SAF blends at up to 50% with conventional jet fuel on current engine types, while higher blends and unblended eSAF require separate certification pathways that engine manufacturers and regulators have only begun to define. American's near-term use under this deal will therefore involve blended volumes within the certified envelope.

The agreement also signals how eSAF specifically — not just conventional SAF — is entering airline procurement. Most SAF supplied to airlines today comes from hydroprocessed esters and fatty acids (HEFA) feedstocks. Power-to-liquid eSAF plants remain expensive and few in number, and industry projections consistently show eSAF as a small share of total SAF supply through the 2020s. Purchase agreements like this one function partly as demand signals intended to de-risk investment in production capacity that developers have been slow to commit.

The cost implications are direct. eSAF currently trades at a multiple of conventional jet fuel's price, and airlines consistently state that SAF adoption at scale depends on closing that gap through production scale-up and policy mechanisms such as tax credits. By sharing the premium with corporate buyers, American shifts part of that cost away from its own fuel bill — fuel being the carrier's second-largest operating expense after labor.

How quickly the fuel actually flows, and in what quantities, will determine whether this agreement functions as a meaningful step toward American's 2030 target or primarily as a demand signal to the eSAF production sector.