# The fuel of the future: TRISO's nuclear revolution

Amazon-backed TRISO particles are shaping the future of nuclear energy.

- **Source:** [Amazon Science](https://www.amazon.science)
- **Published:** 2026-06-24
- **Topic:** [Business](https://brifing.si/c/business)
- **Original article:** <https://www.amazon.science/blog/the-fuel-of-the-future-is-already-here-why-triso-matters>
- **On Brifing:** https://brifing.si/s/5ee2092e-70b4-4a84-80ef-45dd0099d300

## What is TRISO?

TRISO (tristructural isotropic) particles are a next-generation nuclear fuel for reactors. Each poppy seed-sized particle consists of enriched uranium kernels and multi-layered ceramic coatings. They offer significantly higher safety and durability compared to conventional nuclear fuels.

## Superior safety features

TRISO particles feature exceptional thermal resilience, withstanding temperatures above 2700°C thanks to their silicon carbide layer. In U.S. Department of Energy tests, none of the particles failed after 300 hours at 1600°C under radiation. These properties ensure safety even in worst-case scenarios.

## Operational flexibility

TRISO fuels can be manufactured in different forms like pellets or graphite pebbles. The tennis ball-sized graphite spheres used in X-energy's Xe-100 reactors allow continuous refueling without shutdown. This system enables real-time fuel monitoring and efficiency optimization.

## Energy efficiency

TRISO-based reactors can operate at higher temperatures than traditional light-water reactors. Using high-temperature helium or molten salt coolants improves thermal efficiency. Each Xe-100 unit generates 80MW of electricity, with up to 12 modules operable together.

## Amazon's involvement

Amazon is investing in the Cascade Energy Center project in Washington to deploy 12 Xe-100 reactors. These will power the company's data centers and cloud infrastructure with clean energy. The project involves X-energy, Energy Northwest, and Korean partners.

## The future of nuclear

TRISO technology has the potential to overcome nuclear energy's safety and efficiency challenges. It offers a sustainable solution for AI and cloud computing's growing energy demands while reducing carbon emissions. Experts consider this the most robust nuclear fuel ever developed.

## Sources covering this story

- https://www.amazon.science/blog/the-fuel-of-the-future-is-already-here-why-triso-matters — 

---

_Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._