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By Scott Hamilton and Bjorn Fehrm
Feb. 2, 2026, © Leeham News: When the International Air Transport Assn. (IATA) adopted its carbon Net Zero by 2050 policy at the October 2021 
Annual General Meeting, it included milestones for increasing the use of Sustainable Aviation Fuel (SAF). The outline also included the adoption of alternative energy technologies like hydrogen, batteries, and hybrids.
Tim Clark, president of Emirates Airline. A voice of reality when it comes to eco-aviation. Credit: Emirates Airline.
Some, including LNA, quickly concluded that the timeline and some of the technologies were unachievable. Tim Clark, the president of Emirates Airline, attended the IATA AGM. Don’t make promises you can’t keep, he told the assembly.
Since then, airlines across the globe have relaxed or even abandoned the IATA goals for their internal efforts.
SAF remains an elusive alternative. So does hydrogen. Battery-powered eVTOLs appear just around the corner for certification. However, developers of battery-powered commuter and regional airliners hit the reality that the weight of the batteries needed for even flights of a few hundred miles weighs more than is feasible. Some hybrid technologies appear to have promise, yet likely are technologies that appear to have promise for certain aircraft architectures, but need higher-performance batteries, which pushes these into the next decade.
Still, Europe continues to place a priority on sustainable aviation. Airbus, engine manufacturers and key suppliers continue their drive toward more sustainable aviation. However, Airbus backed off its 2035 target for a hydrogen-powered airplane. Rolls-Royce, key engine supplier MTU, and components supplier GKN, and others, strive for improving fuel efficiency and reducing emissions. Safran, a partner with GE Aerospace in the 50-50 joint venture CFM International, and an interiors manufacturer, likewise seeks environmental improvements to their products.
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In Asia, China is making a big bet on eVTOLs (and solar and automobile electric power). Its eVTOL industry is already flying in China. The country is the biggest producer in the world of solar panels and high-performance battery cells. China’s auto industry has a line-up of electric cars from small to luxury based on its battery technology.
