
12/10/2025
Built in Switzerland, Solar Impulse 2 is the world’s largest aircraft powered entirely by sunlight. Designed by Swiss engineers Bertrand Piccard and André Borschberg, it completed a historic journey around the globe covering 40,000 kilometres without using a single drop of fuel. The aircraft is covered with over 17,000 solar cells that power its four electric motors, allowing it to fly day and night.
This achievement proved that renewable energy can sustain long-duration flight, marking a major milestone in clean aviation technology. It inspired new research into solar-based propulsion systems and energy-efficient materials, setting a foundation for future sustainable flight innovations.