Demo
    A person wearing a mask operates a control panel next to a large industrial machine in a factory setting.
    In step two of Prometheus’ jet fuel production process, carbon and hydrogen atoms captured from the air run over a carbon dioxide electrolyzer, an older version of which is shown here during 2021 tests in California. The electrolyzer catalyzes a reaction in which the carbon molecules combine with hydrogen from the water to create alcohol that would later be refined into jet fuel.
    A large jet engine is suspended from a mechanical testing apparatus outdoors with trees and a clear sky in the background.
    Pratt and Whitney is among the engine manufacturers conducting ground tests with 100% sustainable aviation fuel to verify their engine designs perform comparably on these alternative fuels. In March, engineers at the company’s West Palm Beach facility used a SAF derived from vegetable oil to power one of the new GTF Advantage engines, scheduled to enter service in 2024 on Airbus A320neo aircraft.