New research challenges the assumption that DACCS is more cost-effective than synthetic fuels. When factoring in aviation’s full climate impact, including non-CO₂ effects like contrails, DACCU-based synthetic fuels could provide a cost advantage of over $0.44 per liter by 2050. For airline passengers, this would translate to relatively small price increases—$7.70 for short-haul flights and $66 for long-haul routes—compared to traditional carbon offsetting methods.
However, cost-effectiveness depends on how airlines implement other aviation emissions reduction strategies. If airlines minimize contrail formation through flight path optimization or adopt demand management techniques, DACCS could regain its cost advantage. These findings suggest that a hybrid approach—integrating multiple sustainable aviation technologies—may offer the best path forward.
Several factors could accelerate the adoption of synthetic aviation fuels:
Producing enough sustainable aviation fuel (SAF) to meet global aviation demand by 2050 would require over 15 PWh of electricity annually—nearly double today’s global renewable energy output. This presents challenges but also opportunities for regions rich in solar and wind energy to become key players in the future of clean aviation.
As airlines and policymakers navigate the transition to sustainable flight operations, the role of direct air capture technology will be critical in determining the future of carbon-neutral aviation. With aviation industry transformation gaining momentum, strategic investments in green aviation solutions will shape a more sustainable air travel landscape.
