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What Is Sustainable Aviation Fuel?

Sustainable Aviation Fuel (SAF) is a combination of traditional jet fuel and renewable jet fuel. The renewable element is produced from sustainable feedstocks and is similar in its chemistry to traditional fossil fuel. This blend of SAF has the same ASTM D 1655 specification and can be used as jet fuel. SAF can reduce lifecycle carbon emissions by over 80% compared to the traditional jet fuel it replaces.



We're collaborating with 4AIR, an industry pioneer in sustainability solutions, to help FBOs and operators begin their sustainable journey. The Phillips 66® Aviation Carbon Offset Program allows FBOs and operators to balance out their environmental impact by purchasing carbon credits. Each carbon credit purchased reduces or avoids 1 metric ton of CO2 emissions and is issued from widely used global standards eligible under the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA).

What is Unleaded Avgas?

Phillips 66 and Afton Chemical have teamed up to develop an unleaded Grade 100 aviation gasoline (UL100). Our vision for UL100 is that it will be fully compatible with 100LL and the 100LL distribution network, allowing the product to service the entire fleet of general aviation aircraft, to meet or exceed the performance and quality characteristics of 100LL as specified in ASTM D910, to be a less hazardous engine emission compared to 100LL and to minimize any cost increases. Our candidate product is currently in pre-requisite testing with the FAA. Learn more about unleaded avgas development at



British Airways & Phillips 66 Limited sign sustainable aviation fuel supply agreement

British Airways and Phillips 66 Limited have entered into a multi-year supply agreement for sustainable aviation fuel produced at the Phillips 66 Humber Refinery, making the airline the first in the world to use SAF produced in the UK.


Phillips 66 and Southwest Airlines collaborate to advance sustainable aviation fuel

Phillips 66 and Southwest Airlines have signed a memorandum of understanding to advance the commercialization of sustainable aviation fuel, focusing on public awareness and research and development.

Humber’s renewable ambitions make grand entrance

The Phillips 66 Humber Refinery in the U.K. recently welcomed the latest addition to its growing renewable fuels infrastructure: a massive processing unit that will convert used cooking oil into low-carbon fuel.