Thermal Gas-Cooled Reactor (TGR)

Powered by proven fuel, the TR200 delivers reliability, rapid deployment, and regulatory assurance.
Powered by proven fuel, the TR200 delivers reliability,
rapid deployment, and regulatory assurance.

Fuel You Can Trust  —  Proven, Commercially Available, and Qualified

Fuel Details

  • Fuel Type: Standard UO₂ pellets (<5% LEU)
  • Commercial Supply Chain: Established global infrastructure, already licensed and manufactured
  • Qualified Fuel Pellets: Designed for compatibility with modernized cladding and reactor systems

Unlike experimental or hard-to-source fuels, this reactor uses off-the-shelf UO₂ fuel enriched to 5%, a form widely produced, shipped, and qualified in today’s commercial nuclear industry. This dramatically shortens deployment timelines, reduces risk, and ensures regulatory confidence.

 Efficient and Elegant Core Design

  • Power Output: 210 MWe
  • Core Type: Prismatic graphite-block core for robust neutron moderation and heat transfer
  • Fuel Life: 5–9 years in-core, minimizing outages and maximizing return on investment (ROI)
  • Cladding: Advanced SiGA® silicon carbide composite for enhanced performance and fission product retention

This simple but robust configuration eliminates the need for complex refueling strategies and enables exceptional thermal stability and durability.

High-Efficiency, Load-Following Power Conversion

  • Superheated Steam Cycle: Achieves 40% thermal-to-electric conversion efficiency
  • Load-Following Capabilities: Flexibly adjusts power output to match grid demand

Engineered for seamless integration with modern grids, including high renewable penetration, the TGR delivers dispatchable, reliable baseload power.

Proven Materials. Simplified Systems. Scalable Deployment.

  • Fuel supply: Available today; no need to wait for higher enrichment fuel infrastructure
  • Cladding and Core: Built from advanced materials designed for long-term performance  
  • Maintenance and Operation: Streamlined by simple geometry and durable components
Designed with low complexity and high-performance materials to ensure minimal maintenance, and rapid deployment for both new and replacement infrastructure