It seems the aviation sector, one of the toughest nuts to crack in this decarbonization process, is finally seeing the light at the end of the tunnel. While electric cars are already part of the landscape, airplanes have a much tougher time because they can't carry extremely heavy batteries across the ocean. The solution that's gaining traction is none other than... to manufacture fuel from nothingOr rather, by taking advantage of the CO2 that we already have in excess in the atmosphere and combining it with clean energy.
The news has spread rapidly following the opening of the first commercial facility of its kind in the United States, but on our side of the world, specifically in Spain and the rest of Europe, we're not standing idly by. It's a technology that sounds like science fiction but is already a tangible reality: capture carbon from the air to give it a second life in the form of liquid hydrocarbon, thus closing a circle that until now was a straight line towards global warming.
AirPlant One and the rise of Power-to-Liquid technology
In Moses Lake, Washington, the company Twelve has marked a turning point with the inauguration of AirPlant One. This plant does not use oil, but rather relies on a process called Power-to-Liquid (PtL), allowing transform sunlight and CO2 into synthetic fuelsBasically, what they do is capture CO2, water, and electricity from renewable sources to assemble kerosene molecules. The result is what they call E-Jet, a fuel that It has passed all official certifications to be used in commercial flights without having to touch a single screw of the current engines.
The best part is that this invention isn't limited to just making airplanes fly. E-Naphtha, a raw material that's like the holy grail for the chemical industry, comes from the same production line. Thanks to it, plastics, fibers for clothing, and packaging can be manufactured without having to extract a single drop of crude oil from the ground. It's a way of attacking oil dependency and Fossil fuels from several fronts at once, something that comes in very handy for us to gain energy autonomy.
Looking at the figures, things are quite promising. According to those in charge of the project, the use of this synthetic kerosene could reach cut carbon emissions by 90% throughout its entire life cycle. This happens because the CO2 the plane expels through the turbine is exactly the same amount that was previously removed from the air to manufacture the fuel. In the end, it's as if we were recycling dirty air to move, which isn't so bad considering the current state of the environment.
The role of Spain and the European STEROPE project
But be warned, Spain has a lot to contribute to this race. The Spanish National Research Council (CSIC), through the Institute of Catalysis and Petrochemistry in Madrid, is leading a key part of the European STEROPE project. They're not messing around here: they've designed a pilot plant inside a container This transport system is capable of producing methanol from CO2 and green hydrogen. This methanol is the base for creating the final fuel needed by ships and airplanes.
Researcher Silvia Morales de la Rosa is one of the leading voices in this project, and she's clear that Spain has a huge competitive advantage. Thanks to our abundant sunshine and wind, we can generate that cheap green hydrogen, taking advantage of the green hydrogen projects in Spainwhich is the ingredient that makes the whole process expensive. The idea is that these portable factories will move around Europe, from refineries in Greece to laboratories in Belgium or Italy, demonstrating that we can be energy independent without needing to import gas or oil from abroad.
The European Union's objective is ambitious: by 2050, 70% of the fuel used by aircraft must be from renewable sources. Projects like STEROPE not only aim to reach this goal, but also aspire to... exceeding reduction expectations of emissions, reaching levels of 95% if the entire process is powered by clean energy. It is a strategic commitment that places Spanish science at the heart of the global energy landscape.
Scalability and the challenge of industrial costs
Unlike other sustainable fuels made from used oils or agricultural waste, the electrochemical route (which uses CO2 and light) has much greater growth potential. We are not dependent on a good harvest or how much biomass can be collected; here, the limit is set by... capacity to generate renewable electricity and the technology of electrolyzers. It's a process that mimics plant photosynthesis but on a massive scale, industrially and much faster.
However, there's still one obstacle: the price. Currently, manufacturing this "lab-grown kerosene" is more expensive than continuing to burn traditional kerosene. Nevertheless, experts are optimistic because the cost of solar panels and wind turbines continues to fall. Furthermore, as more plants like those in Washington and Spain are built, the Economies of scale will work their magic And prices will be adjusted so that airlines have no excuse when it comes to filling up their tanks.
This transition to an air transport model that doesn't harm the planet is a long road, but the steps being taken now are giant leaps forward. By using existing infrastructure, such as airport fuel tanks and current engines, we gain precious time that we don't have to stop climate change. Having an alternative that take advantage of the most abundant resources The Earth's resources, such as the sun and the excess carbon we have, are the smartest move we can make to keep flying without a guilty conscience.
