Bridging the gap between aircrafts and satellites, Zephalto is a French aerospace manufacturer providing sovereign access to the stratosphere for Industry, Science, and Defense.

Zephalto designs, manufactures, certifies, and operates reusable stratospheric balloons capable of lifting heavy payloads up to 6 tons and up to 35km altitude.

Partnered with CNES, our low-carbon technology relies on hydrogen & reusable envelopes, offering a sustainable « Flight-as-a-Service » platform.

The company is opening a quick, scalable and cost-efficient access to the stratosphere to a wide range of applications, from ISR to earth observation or stratospheric testbed (for TRL raising).

With innovation at its core, Zephalto combines EASA-level standards with global civil aviation compliance to serve strategic aerospace needs.