Phillips 66 will provide up to 11 million gallons or 41.6 million litres of SAF, delivering an expected reduction of approximately 100,000 tonnes of lifecycle greenhouse gas emissions - equivalent to one freighter-flight every day of the year.

United Airlines will use the fuel while acting as a carrier for DSV, while DSV and Microsoft will use a book‑and‑claim methodology to verify the emissions reduction independently of physical fuel use.

"This is the largest contracted SAF supply agreement with a in the history of our corporate SAF program, the Eco-Skies Alliance, demonstrating the possibility of large-scale greenhouse gas reductions when the members of a value chain - from supplier to end customer - work together," said Lauren Riley, Chief Sustainability Officer, United Airlines.

To ensure full transparency, this SAF transaction follows DSV's standard process, is supported by International Sustainability and Carbon Certification (ISCC), and is tracked through the Sustainable Aviation Fuel Certificate Registry (SAFc Registry). The ISCC verifies that the fuel is produced from strictly sustainable feedstocks and managed through a fully audited supply chain.

In parallel, DSV's internal book-and-claim registry, together with the SAFc Registry, provides a transparent system that records and tracks the associated environmental attributes. This ensures that each tonne of CO2 emissions reduction is verified, allocated to a specific shipper, and protected against double-counting. Together, this creates a clear and auditable trail that supports robust and credible corporate emissions reporting.

"This collaboration builds on Microsoft's ongoing work to reduce emissions across our cloud logistics value chain and supports our broader sustainability goals. By collaborating with partners across the aviation value chain, we can help advance the adoption of sustainable aviation fuel and support the transition to lower-carbon air transport," said Marco Eipper, General Manager, Cloud Supply Chain Logistics, Microsoft.