United and Microsoft Co-Pilot a Massive SAF Deal

Four industry giants team up to unlock 11 million gallons of sustainable fuel, slashing aviation emissions through a massive supply chain deal

27 Apr 2026

Flying has long been the stubborn child of the green energy movement. While cars went electric and grids turned to wind, planes stayed tethered to the heavy carbon footprint of traditional kerosene. A new deal between United Airlines, Microsoft, DSV, and Phillips 66 aims to change that narrative by securing 11 million gallons of sustainable aviation fuel. This isn’t just a purchase; it is a blueprint for how massive corporations can finally share the bill for cleaner skies.

The logistics are as clever as the chemistry. Phillips 66 produces the fuel, United flies the planes, and tech and shipping giants like Microsoft and DSV help foot the bill. This "book-and-claim" system allows companies to fund green fuel even if it isn't pumped into the specific jet carrying their cargo. It creates a verified trail of emission cuts that satisfies both accountants and environmentalists.

This massive agreement aims to slash lifecycle greenhouse gas emissions by roughly 100,000 tonnes. By pooling their financial muscle, these four players are solving the biggest problem in green aviation: the price tag. Sustainable fuel is expensive, and no single company wants to bear the cost alone. This partnership proves that when the burden is shared, the fuel actually starts to flow.

Meanwhile, the timing is critical as U.S. production of these fuels finally begins to find its rhythm. At the start of last year, domestic output was a mere trickle. Now, capacity has surged to tens of thousands of barrels per day. Even with this growth, sustainable options make up less than 2 percent of total jet fuel use. Deals like this act as the necessary spark to turn a niche experiment into a standard industry practice.

Success in this sector requires more than just good intentions. It needs the kind of rigorous auditing provided by the International Sustainability and Carbon Certification scheme used here. As more brands look to clean up their supply chains, the math becomes simple. If you want to change how the world flies, you have to bring everyone to the table.