Beta Technologies’ ALIA CTOL: Pioneering the Future of Sustainable Electric Aviation

Published on July 13, 2025

Aviation remains one of the largest sources of carbon emissions, and given the rise of electric cars, electric flight has become a viable solution for the sector. This week, Beta Technologies took a big step forward when it completed the first-ever test flight of an electric plane in Denmark. Named ALIA CTOL, or Conventional Take-Off and Landing, the electric fixed-wing aircraft flew 200 kilometers between Sønderborg and Copenhagen airports, illustrating the potential for electric air travel on regional routes.

The US-based Beta Technologies created the ALIA CTOL as a small, energy-efficient plane, with a wingspan of only 15 meters, which is roughly the same size as a Sprinter van. Not as a big, but it can fly at a speed of 281 km/h. The most striking thing about this flying machine, though, is just how green it is: it generates up to 84% less carbon dioxide than a comparable conventional helicopter. This makes lighter-than-air a great choice for both passengers and cargo, with the added bonus of lower noise levels and a lower price point.

The future has started,” said Jákup Sverri Kass, the director of Sønderborg Airport, at the launch event. This is not just a test. This is the beginning of something new.” In fact, the accomplishment of ALIA CTOL’s flight marks for the major breakthrough for the electric aviation industry, which already kicked off on its journey through Europe. The aircraft is now on the European leg of its tour which started in May at Shannon Airport in Ireland. It would still display its all-electric services and charging infrastructure at several airports on the continent.

The Challenges of Electric Aviation

The positive news from Denmark for aircraft may be a good thing, but the industry is far from in the clear, and one of the biggest issues for them is charging infrastructure. As things stand, ALIA-CTOL uses truck car batteries and stops frequently to recharge at airfields. “There’s no infrastructure already on the ground in Europe like we have today in the United States,” said Shawn Hall, the chief revenue officer of Beta Technologies. That should change as airports, including Copenhagen Airport, move to suit the requirements of electric aviation. Christian Poulsen, CEO of Copenhagen Airport, noted that the airport will also have to be able to charge conventional and electric aircraft.

A second big hurdle for electric aviation is battery expense. The same concerns expressed about electric cars, around pricey batteries and lightweight materials, persist. Jørgen Mads Clausen, the chair emeritus of the Danish battery systems giant Danfoss, recently predicted that computer battery technology could support more significant electric aircraft in ten years. But he added, “You need to be ready when things take off. For when things do move quickly, with ripe technology.

The Future for Sustainable Aviation

The swift progress of electric aircraft is part of a wider European ambition to shrink the carbon footprint of aviation. Denmark is one of the trendsetters, it is planning to create its first sustainable domestic flight route by 2025, with an ultimate goal of making all domestic flights fossil-free by 2030. The Danish government, seeking to finance a move to green aviation, has proposed a flat fee of 13 Danish kroner (€1.74) per passenger for the same cause. Other Nordic countries are making similar inroads, with Norway planning for all domestic flights to be electric or hybrid by 2040 while Sweden hopes to have fossil-free domestic flights in place by 2030.

Sweden’s Heart Aerospace is also working on an electric plane, the ES-30, a 30-passenger plane with a fully battery-powered range of 200 kilometers. Although the range of electric planes is on limited area flights at this point the technology is more suited for short-haul transport within Europe. However, while electric flight is a positive step, it’s believed that other technologies including Sustainable Aviation Fuel (SAF) and hydrogen fuel may still also be needed for countries to reach their sustainability targets.

Lasse Stenhøj Ingvardsen, team manager at Renewable Energy Systems at the Danish Technological Institute, stressed that multiple technologies were needed to provide a sustainable future for aviation. “We don’t have to stick to just one,” he said. “Electric will be one tool. There should be hydrogen planes perhaps, and hybrid solutions will also have a role to play.”

Global Progress on Electric Aviation

Electric aviation is not just a phenomenon in Europe. Electric aircraft are also being developed in the United States. Companies such as Joby Aviation and Electra. aero are developing similar aircraft for urban air mobility and regional commerce. Improvements in battery technology, too, could make electric-powered planes a more practical option for commercial aviation in the future.

Still with a way to go, the success of ALIA and CTOL based engines in Denmark is a watershed for the industry. With governments and companies across Europe ploughing money into sustainable aviation technologies, cleaner, quieter and cheaper flying might soon be a reality.

A Green Future for Aviation?

As electric planes advance, the opportunity to shave emissions from aviation is unmistakable. There are still obstacles, battery expenses and infrastructure requirements among them, but the growing number of tests and even successful launches of electric planes demonstrates the image of a greener future for aviation is closer than we think. The increasing number of successful projects, among them the Beta Technologies’ ALIA CTOL, leaves us optimistic that sometime in the near future, we might behold a world where electric planes are as ordinary as their fossil-fueled equivalents.

So in conclusion, the electric aviation revolution is only getting started, and the first test findings show the first steps in a more climate friendly future beneath us in the air.