EasyJet said it had set "a new aviation milestone" by teaming up with Rolls-Royce to test a hydrogen-powered aircraft engine.
Using a "green hydrogen created by wind and tidal power", the test was a "major step towards proving that hydrogen could be a zero carbon aviation fuel of the future", easyJet announced.
The British budget carrier said the trial, which was carried out at a UK military aircraft test site, used hydrogen produced at the European Marine Energy Centre (EMEC) test facility on the Orkney Islands.
Rolls-Royce chief technology officer Grazia Vittadini lauded the test as "an exciting milestone" that came only five months into a partnership with easyJet, whose chief executive Johan Lundgren welcomed what said could be "a huge step forward in meeting the challenge of net zero by 2050.”
More engine tests are being lined up ahead of a hoped-for "full scale ground test" of a Rolls-Royce Pearl 15 engine.
The test announcement comes after Airbus recently said it had been working on hydrogen-powered engine research and development for the past 15 months.