About
Founded in 2010, SolarStratos is a private headquartered in Payerne, Switzerland specializing in Solar.
SolarStratos is a Swiss-based aviation research project focused on developing and operating solar-electric aircraft capable of reaching the stratosphere. The company's primary aircraft features a 24.8-meter wingspan constructed from carbon fiber, equipped with advanced solar cells (22-24% efficiency) covering approximately 22 m² of wing area. Power is delivered by dual 50 kW electric motors, with lithium-ion battery storage ranging from 11-28 kWh depending on configuration. The aircraft carries scientific instruments to measure atmospheric conditions at rarely-accessed altitudes. On August 12, 2025, SolarStratos achieved a record altitude flight exceeding 9,500 meters above the Swiss Alps using only solar power. The project combines aeronautical engineering, pilot expertise, and scientific research to demonstrate that sustainable aviation concepts previously considered impossible are now viable with current technologies.
Headquarters
Payerne, Switzerland
Founded
2010
Company Type
Private