H3 Dynamics and XSun begin solar-hydrogen-electric UAV programme
H3 Dynamics and XSun started development of a tri-hybrid unmanned-aircraft power system combining solar generation, hydrogen fuel cells and batteries.

Evidence notes
- XSun contributes its solar-electric unmanned-aircraft platform and wing-integrated photovoltaic capability.
- H3 Dynamics supplies a miniaturised hydrogen fuel-cell system intended to provide the main cruise power.
- A smart power-management layer will balance solar energy, battery peak power for take-off and hydrogen-electric endurance during flight.