When hydrogen is used in fuel cells, the only by-product is water. No carbon. No pollutants. No compromise. It’s a clean, high-efficiency energy solution perfectly suited to the demands of long-duration, sustainable aviation.
While short-range hydrogen aircraft are in development, no one has yet demonstrated its viability for long-duration, round-the-world flight.
That’s what makes Climate Impulse a breakthrough.
Changing the course of aviation
By flying 43,000 km with nothing but green hydrogen, Climate Impulse sends a clear signal to the aviation industry: it’s time to rethink what powers flight!
This project challenges assumptions and proves that clean energy, and not fossil fuels, can take us further.
We want to give an impulse to climate action, to show that nothing is impossible.
The ecological mission of Climate Impulse is reflected in its engineering, its energy choices, and its long-term vision.
It runs entirely on green hydrogen, with no CO₂ or particle emissions
The only output from its fuel cell is pure water vapor
Its ultra-light structure and optimized aerodynamics reduce energy use at every stage
It acts as a catalyst for change in other industries, from transport to heavy manufacturing
It sets a benchmark for how aviation can integrate sustainability into real-world design and performance.
Why hydrogen, why now?
Hydrogen is the only realistic energy source that enables this flight today. While batteries remain too heavy for long-distance aviation, green hydrogen provides the energy density needed to sustain nine days of non-stop flight, without compromise.
And beyond the mission, Climate Impulse is helping to make hydrogen more desirable, more visible, and more viable for other industries, from steel and shipping to agriculture and infrastructure.
Can hydrogen flight scale to commercial aviation?
This two-seater aircraft is a functional prototype, developed to demonstrate scalable innovations for sustainable aviation.
If two pilots can fly 43,000 km on hydrogen, then regional and short-haul hydrogen aircraft are well within reach. The project shows how:
Hydrogen fuel cells
Cryogenic storage
Carbon fiber structural innovation
Real-time energy optimization
…can work together in extreme conditions, and how they might evolve for use in commercial fleets.
Why does Climate Impulse matter beyond aviation?
While aviation is the flagship application, many of the technologies developed here have cross-sector potential.
Cryogenic tank design and lightweight materials could be adapted for maritime or land transport Fuel cell cooling and optimization could benefit remote power, data centers, or emergency response
Hydrogen storage insights could inform energy systems, infrastructure, and industrial manufacturing
How does the project inspire broader change?
Climate Impulse is designed to spark imagination as much as it sparks innovation.
Through its media presence, educational tools, and international reach, the project becomes a global platform for ecological awareness, not through fear, but through possibility. By showcasing what’s possible when human ingenuity meets sustainable ambition, Climate Impulse becomes more than a mission. It becomes a message.
Curious how we’re using breakthrough technology to bring this mission to life?
