# X-energy develops helium-cooled nuclear reactors

MIT Technology Review profiles X-energy and its helium-cooled nuclear reactor technology. The company is developing high-temperature gas-cooled designs, including the Xe-100, that could provide safer, modular, low-carbon power. If successful, such reactors could help decarbonize electricity and industry, though cost and regulatory hurdles remain.

**Importance:** 3/5

## Sources

### Technology
- [MIT Tech Review](https://www.technologyreview.com/2026/10/06/1145025/2026-climate-tech-companies-to-watch-x-energy-helium-cooled-nuclear-reactors/) — Tue, 06 Oct 2026 10:35:00 +0000