Google and American Airlines Ink the Largest Corporate SAF Deal Yet

American Airlines and Google said on June 9 they have signed the biggest sustainable-aviation-fuel deal ever struck between an airline and a single corporate buyer. The agreement unlocks about 35 million gallons of SAF over three years, cuts close to 300,000 metric tons of lifecycle carbon-dioxide-equivalent emissions, and, just as important for the fuel side of the ledger, gives American the cover it needed to sign a new long-term SAF offtake contract with Valero. The physical fuel lands at Chicago O'Hare through pipes and hydrant systems that already exist.

That last detail is the one worth sitting with. This is not a press-release pledge floating in the future. It is barrels of finished fuel moving through real infrastructure at one of the country's busiest airports, paid for in a way that finally lines up the incentives of a tech giant that flies a lot of employees and an airline that burns a lot of kerosene.

What the two companies actually agreed to

The structure is a split, and understanding the split is the whole story. American buys the physical SAF and takes delivery of it at O'Hare, blending it into its normal operation the way it would any jet fuel. Google does not take a drop of it. Instead, Google buys the environmental attributes of that fuel through sustainable-aviation-fuel certificates registered on the SAFc Registry, using a book-and-claim method. Google applies those certificates against the emissions from its own employees' business travel.

Book-and-claim exists because of a stubborn physical fact: you cannot route a specific gallon of clean fuel to a specific traveler's seat. SAF, once blended, is chemically identical to conventional jet fuel and flows into a shared supply. So the industry separates the molecules from the credit. The fuel goes where the plumbing goes; the emissions benefit gets tracked, sold, and retired on a registry so it can only be claimed once. It is the same logic that lets a company in Ohio pay for wind power generated in Texas.

Roughly 35 million gallons over three years, running through 2029. Nearly 300,000 metric tons of CO2e avoided. No dollar figure was disclosed by either side.

Why the Valero contract is the real news

Strip away the corporate-sustainability language and here is what happened: Google's money let American commit to buying fuel, and that commitment let American sign a long-term offtake agreement with Valero Marketing and Supply. That is the mechanism, and it matters more than the certificate count.

SAF producers have a chicken-and-egg problem. Building or converting a refinery to make renewable jet fuel costs a lot, and lenders want to see guaranteed buyers before they finance the plant. Airlines, running on thin margins, are reluctant to sign multi-year contracts for a fuel that still costs two to four times more than conventional kerosene. A corporate buyer willing to pay for the green premium breaks the stalemate. Google absorbs the cost that makes the economics work; American gets to lock in supply; Valero gets a signed, long-term customer it can take to its own board and its own financiers.

The feedstock here is waste-based, primarily used cooking oil, which is the workhorse of today's SAF market. That matters because used-cooking-oil pathways deliver strong lifecycle emissions cuts without competing with food crops, though the supply of it is finite and everyone in the market is chasing the same grease.

Chicago O'Hare and the Illinois tax credit

Location was not an accident. Illinois runs one of the more generous state-level SAF incentives in the country, a per-gallon tax credit designed to pull production and blending into the state. Governor JB Pritzker tied the deal directly to that credit, framing it as proof the policy can bring buyers and producers to the table. He is not wrong about the direction, even if a governor talking up his own program deserves the usual skepticism.

Federal support sits underneath the state credit, and the combined stack is what turns SAF from a money-losing gesture into something an airline CFO can defend. Take the credits away and a deal like this gets a lot harder to close. That is the uncomfortable truth of the SAF market right now: it runs on policy scaffolding, and the scaffolding is not permanent.

The scale problem nobody is hiding

American's sustainability chief, Jill Blickstein, called the agreement a critical step and was honest that SAF's ability to scale to the level a net-zero-by-2050 target demands is still an open question. That candor is refreshing in a corner of the business where overclaiming is the norm.

Run the arithmetic. American burns billions of gallons of jet fuel a year. This deal covers 35 million gallons over three years, or a little under 12 million a year. Against the airline's total consumption, that is a rounding error. SAF made up well under one percent of global jet fuel supply as of this year, and even aggressive forecasts do not get it to double digits before the 2030s. The molecules simply are not being produced yet in the volumes the climate math requires.

So what is a deal like this really doing? It is a demand signal. Google's climate team has said the point is to give producers and financiers the confidence to build capacity. Kate Brandt, Google's chief sustainability officer, put it as sending a signal to catalyze investment. That is the honest framing. One contract does not decarbonize aviation. A hundred of them, each pulling a new production line into existence, might start to move the curve.

What to watch next

The number to track is not the gallons in this announcement. It is whether the Valero offtake contract actually results in new production capacity coming online, versus Valero simply reshuffling fuel it was going to make anyway. Book-and-claim only helps the climate if it drives additional SAF into the system rather than relabeling existing supply. The SAFc Registry is built to keep the accounting honest, but the additionality question is the one that separates real progress from clever bookkeeping.

Watch, too, for other tech companies to follow. Google is not the only firm with a large travel footprint and a public net-zero target, and this deal now sets the template: corporate buyer funds the premium, airline signs the offtake, producer builds the plant. If Microsoft, Amazon, or the big banks copy it, the aggregate demand signal starts to look like something a refinery can plan around. If they do not, this stays a landmark one-off.

For now, American and Google have done the useful thing. They put real fuel in a real airport, got a producer to sign a real contract, and were straight about the limits. In a market that runs on promises, that is worth more than the headline number.