Save for later Print Download Share LinkedIn Twitter Europe’s fastest-growing and self-proclaimed “greenest” budget airline Wizz Air has invested £5 million ($6 million) in UK sustainable aviation fuel (SAF) producer Firefly Green Fuels. The deal will give the low-cost carrier access to up to 525,000 metric tons (174 million gallons) of Firefly SAF made from sewage sludge to fuel its UK operations over 15 years from 2028. “Our investment in Firefly and its sewage sludge SAF technology is a major step forward for Wizz Air in securing its long-term ability to provide low-cost fares to its customers in an ever-more environmentally sustainable way,” said Wizz Air head of strategic projects Michael Berlouis. “This has the potential to reduce our emissions by 100,000 tons CO2e/yr, which is equal to the emissions of over 12,000 return Wizz Air flights between London and Budapest,” he said of the Apr. 24 deal. Wizz Air has already signed SAF offtake agreements with Shell, Austria's OMV and most recently Spain's Cepsa. But this is its first direct investment in SAF production.