REAL-WORLD IMPACT

We’ve built the modern world on fossil fuels. As we confront negative environmental impacts and geopolitical conflicts, there is a growing imperative to adopt cleaner energy sources to shape a more resilient and eco-friendly future.

At Liquid Sun, we turn CO₂ and renewable energy into sustainable jet fuel. It works with today’s planes, cuts lifecycle emissions by up to 90%, helps airlines meet growing climate mandates, and proves progress to passengers.

Real-world impact by sustainable jet fuel, Liquid Sun

GROWING PROBLEM

AIR TRAVEL IS EXPECTED TO DOUBLE BY 2050. BUT WHILE AVIATION CONNECTS THE WORLD, IT ALSO CONTRIBUTES TO GLOBAL WARMING. THE PROBLEM ISN’T FLIGHT ITSELF, BUT THE FUEL THAT POWERS IT. FOSSIL-BASED JET FUEL REMAINS THE INDUSTRY’S DEFAULT, LOCKING IN EMISSIONS AT A TIME WHEN THE PLANET DEMANDS NET-ZERO. We need a new way to move the world – one that keeps us flying forward, without leaving carbon behind.

CLEAN ALTERNATIVE

At Liquid Sun, we’re not here to stop aviation but to rethink how we fuel it. By replacing fossil jet fuel with a cleaner, scalable alternative, we make it possible to fly toward a net-zero future. We believe big industries can change, and lead the way to a better future.

Replacing fossil fuels by sustainable jet fuel, Liquid Sun.

What Drives Us

We turn research into real-world change. Everything we do is grounded in science and built to move the world forward without fossils.

ABOUT US

RECODING EMISSIONS FOR CLEANER SKIES

Liquid Sun is a tech company focused on solving one of aviation’s biggest problems: fossil fuels. We’re building a scalable solution that makes clean flight possible without needing to change the way the world moves.

ABOUT

Sustainable jet fuel by recoding emisisons, Liquid Sun.

A REAL GREEN TRANSITION

Sustainable fuels won’t take off without true price parity to fossils. We’re closing the gap with a fuel that’s both scalable and cost-competitive.

A MARKET READY MISSION

We're building a new industry with a new value chain that moves both the market and the mission.

SCIENCE WITH AMBITION

We’re using science to change the world, and share a mission with both our people and partners: to turn world-class research into real-world impact.

LATEST NEWS & PRESS RELEASES

Europe faces a decisive opportunity to transform its fuel systems in a way that not only reduces emissions but also strengthens energy security, industrial sovereignty, and long-term competitiveness. Locally produced synthetic aviation fuel, eSAF, sits at the heart of this transition, and the speed of its development determines who leads the global market of the future.

28.4.26 —

Blog

Europe faces a decisive opportunity to transform its fuel systems in a way that not only reduces emissions but also strengthens energy security, industrial sovereignty, and long-term competitiveness. Locally produced synthetic aviation fuel, eSAF, sits at the heart of this transition, and the speed of its development determines who leads the global market of the future.

SEE ARTICLE

Achieving price parity with conventional SAF is a central objective in the development and scaling of the eSAF market and its value chains. Liquid Sun’s developments in Q1 2026 mark a significant step toward overcoming this barrier. With a new generation of electrolyzer stack design, major cost reductions in core components, and compatibility with existing energy infrastructure, we are accelerating the transition from pilot to mass production.

13.4.26 —

Newsletters

Achieving price parity with conventional SAF is a central objective in the development and scaling of the eSAF market and its value chains. Liquid Sun’s developments in Q1 2026 mark a significant step toward overcoming this barrier. With a new generation of electrolyzer stack design, major cost reductions in core components, and compatibility with existing energy infrastructure, we are accelerating the transition from pilot to mass production.

SEE ARTICLE

Liquid Sun’s journey toward eSAF production has taken firms steps. In the last quarter we’ve commissoned our eSAF pilot unit and produced firsts batches of crude for eSAF. This milestone strengthens both Finland’s and Liquid Sun’s position at the forefront of sustainable aviation fuel innovation. It paves the way for scaling up production and refining the crude into aviation fuel together with Liquid Sun’s partner network.

23.12.25 —

Newsletters

Liquid Sun’s journey toward eSAF production has taken firms steps. In the last quarter we’ve commissoned our eSAF pilot unit and produced firsts batches of crude for eSAF. This milestone strengthens both Finland’s and Liquid Sun’s position at the forefront of sustainable aviation fuel innovation. It paves the way for scaling up production and refining the crude into aviation fuel together with Liquid Sun’s partner network.

SEE ARTICLE

Aviation is shifting from fossil fuels to cleaner alternatives, including synthetic jet fuel made from CO₂ and renewable electricity. From 2030, EU airports must begin using a fuel, known as eSAF. To make sure it truly reduces emissions, the EU’s Renewable Energy Directive (EU RED) sets strict rules for how eSAF must be produced and verified.

25.11.25 —

Blog

Aviation is shifting from fossil fuels to cleaner alternatives, including synthetic jet fuel made from CO₂ and renewable electricity. From 2030, EU airports must begin using a fuel, known as eSAF. To make sure it truly reduces emissions, the EU’s Renewable Energy Directive (EU RED) sets strict rules for how eSAF must be produced and verified.

SEE ARTICLE

We had the pleasure of welcoming MTV Uutiset, one of Finland’s leading national news broadcasters, to our eSAF production pilot facility in Espoo. Our team proudly demonstrated how biogenic CO₂, renewable electricity, and green hydrogen come together in our modular system to create synthetic crude oil.

18.11.25 —

Press

We had the pleasure of welcoming MTV Uutiset, one of Finland’s leading national news broadcasters, to our eSAF production pilot facility in Espoo. Our team proudly demonstrated how biogenic CO₂, renewable electricity, and green hydrogen come together in our modular system to create synthetic crude oil.

SEE ARTICLE

Liquid Sun’s journey is accelerating. This quarter we’ve achieved important advances in eSAF production through strong industrial and aviation partnerships - concrete steps that move us closer to commercial reality. Each milestone strengthens our momentum and reinforces the confidence that clean aviation is within reach. Read on for the latest updates from Q3.

17.9.25 —

Newsletters

Liquid Sun’s journey is accelerating. This quarter we’ve achieved important advances in eSAF production through strong industrial and aviation partnerships - concrete steps that move us closer to commercial reality. Each milestone strengthens our momentum and reinforces the confidence that clean aviation is within reach. Read on for the latest updates from Q3.

SEE ARTICLE