2-6 Seat
Zero-emission icons

Zero-emission icons both old and new
Our 2-6 seat hydrogen-electric use-case is based on iconic aircraft like the Beechcraft Bonanza A36. Designed to fly 500km, it is gaining traction with piston engine owners and developers of fixed wing electric and eVTOL.
- 120 kW
- Maximum continuous power
- 1.7 kW/kg
- Specific power
- 70 kg
- Total system weight
- 50%
- Net efficiency at cruise
Stralis 2-6 seat system
A hydrogen-electric fuel cell system designed for aircraft propulsion
High-temperature PEM technology simplifies the system, reducing both weight and drag. Our system integrates our fuel cell system with liquid hydrogen tanks and electric motors.
Lightweight
Low maintenance
Low drag
Zero emissions

Stralis’ flight demonstrators Bonnie & Clyde




Leaded aircraft fuel is being phased out
Worldwide 150,000 piston aircraft use fuel that will soon be banned. Our zero- emission system is designed to retrofit Beechcraft Bonanza 36, Cirrus SR22T, Vans RV-10, Mooney M20 and more.

Retrofit and replace
Piston engine aircraft
We integrate our proprietary fuel cell system, liquid hydrogen tanks and electric motors into aircraft. Our system is designed to retrofit aircraft like the Beechcraft Bonanza 36, Cirrus SR22T, Vans RV-10, Mooney M20 and can replace a Continental IO engine.
Talk to our team ›We are currently taking expressions of interest for Bonanza and piston engine retrofits
Learn moreAviation is electrifying but batteries alone are limited
Our long-range high-temperature PEM technology enables useful range, long life and fast refuel.
Aircraft developers
Fixed wing electric and eVTOL
Our hydrogen-electric propulsion system can upgrade battery-electric aircraft, replace conventional engines, and be integrated into new aircraft designs.
Talk to our team ›

Hydrogen-electric propulsion
Cheaper, quieter, cleaner
Our scalable patent-pending tech is 6x lighter than current state-of-the-art, enabling 10x longer flights than battery-electric and operating at 50% the cost of fossil fuel aircraft.
How our system works ›Explore use-cases
Our hydrogen-electric fuel cell system features stacks connected in series, with turbocharging and liquid cooling and scales to suit a range of aircraft sizes.