H55's electric aircraft flies so quiet, that during a noise measurement test, the Bristell B23 Energic powered by H55 propulsion system was so quiet that the electric aircraft flew without triggering three of six official noise-monitoring sensors. On 11 July 2025, the B23 Energic flew identical f...

H55, a Swiss innovator in electric aviation technology and a spin-off of the pioneering Solar Impulse project, has been named among TIME Magazine’s World’s Top 250 GreenTech Companies of 2025. The recognition places H55 in an elite group of just four Swiss firms selected from over 8,000 global ...

H55 SA, a provider of certified electric propulsion and battery management systems for sustainable aviation, and Aerovolt UK Ltd, electric aircraft charging solutions, have signed a Memorandum of Understanding (MOU) to collaborate on advancing electric aviation. This partnership marks a significa...