VoltAero's Cassio 330 features a 330 kW electric-parallel hybrid propulsion system built around a Kawasaki piston engine, with an electric motor from Safran.

HH2E plans to establish four gigawatts of green hydrogen production capacity in Germany by 2030 and has already announced plans for two facilities.

GE Research has been selected to receive $2.9 million to design, manufacture and test a composite tank capable of carrying 20 kg (44 lb.) of liquid hydrogen.

Boom Supersonic has sized the facility to produce up to 33 Overture aircraft per year and expects to start rolling out its Mach 1.7 airliner from 2026.

A study by German aerospace center DLR also shows that further reductions in climate impact are possible by switching to hydrogen as an aviation energy source.

Airbus and ZeroAvia have agreed to collaborate on certification approaches for hydrogen power systems and work together on key technologies.

Joby’s S4 electric-vertical-takeoff-and-landing aircraft are scheduled to begin rolling off the final assembly line at Dayton International Airport in 2025.

AVIC's AR300 bears a close resemblance to the U.S. Lift Aircraft Hexa ultralight eVTOL vehicle, although there are some notable design differences.