Resoloon builds an ultra-light stratospheric balloon system designed to operate at around 30 km altitude for high-resolution earth observation. Its system weighs under 4 kg including optics, sensors, Starlink connectivity and control, and is intended to cover roughly 800 km² per balloon. Positioning and station-keeping rely on an AI model that simulates winds across 15 atmospheric layers and steers the platform via controlled altitude changes rather than heavy propulsion. Data transmission is enabled via Starlink. The company targets both military reconnaissance and civilian use cases such as infrastructure monitoring, disaster response and environmental or agricultural observation. Financially, Resoloon completed a €550,000 Pre-Seed round in February 2026 led by Day One Capital and Project Europe.

Total raised

$1M

Funding rounds

1

Latest round

Seed

Latest activity

Aug 2026