# WindBorne raises $15M Series A led by Khosla Ventures to scale its balloon fleet

Canonical page: https://technooptimist.io/stories/windborne-raises-15m-series-a-led-by-khosla-ventures-to-scale-its-060d45f8
Date: 12 Jun 2024
About: [WindBorne Systems](https://technooptimist.io/companies/windborne-systems.md) · [WeatherMesh](https://technooptimist.io/ai/weathermesh.md)
Original source: https://pulse2.com/windborne-systems-15-million-raised-to-scale-balloon-constellation/

WindBorne raised $15 million led by Khosla Ventures, with Footwork, Pear VC and Convective Capital joining. The money went to engineering, hiring and moving into commercial and international government sales.

## Key facts

- Balloons weigh a few pounds, mostly sand ballast, and can fly 40+ days while changing altitude.
- Company claims about 10x more data per dollar over land and 150x over oceans than standard balloons and dropsondes.
- Over 1,000 flight missions completed since founding in 2019.

---

The Techno Optimist tracks every frontier of technology, program by program: https://technooptimist.io/ (a Markdown version of any page: add .md to its URL; site map for agents: https://technooptimist.io/llms.txt).
Data API (JSON, realtime stream): https://technooptimist.io/developers. People read 5 pages free, then Reader $10/month; these Markdown pages are open to agents.