A Reuters investigation has found that the global airline industry is far behind its public commitments to curb emissions through sustainable aviation fuel. Of 165 SAF projects announced over the past 12 years, only 36 have produced any fuel, while 23 have been abandoned and dozens more are stalled or lack public updates. Even if every pending project reached full capacity, total output would cover only about 10 % of the volume the International Air Transport Association says is needed for the sector to reach net-zero emissions by 2050. The report highlights the collapse of a high-profile partnership between United Airlines and World Energy, once touted as a model for the transition. World Energy’s Paramount, California, refinery—one of the first commercial SAF facilities—shut down in April after cost overruns and the exit of partner Air Products, which withdrew from a planned US$2 billion expansion. All 35 employees were laid off, and plans for a second plant in Houston have stalled. United ended its fuel-purchase contract “a few years ago,” while JetBlue says it still works with World Energy. IATA estimates SAF will account for just 0.7 % of global jet-fuel consumption this year, despite mandates in the European Union that begin at 2 % in 2025 and rise to 70 % by mid-century. Producers say the fuel costs three-to-five times more than conventional jet fuel, while some oil majors argue that supply already exceeds airlines’ willingness to buy at current prices. The findings cast doubt on industry pledges and point to the need for stronger incentives or regulation if aviation is to meet its climate goals.