Natura Secures DOE Molten Salt Coolant for Advanced Reactor Deployment
Event summary
- Natura received FLiBE salt from the DOE on September 18, 2026, for its MSR-1 demonstration reactor.
- The salt was sourced through a competitive DOE solicitation issued in August 2025.
- FLiBE salt contains 99.99% enriched lithium-7, minimizing tritium generation.
- Natura has secured over $240 million in funding, including $120 million from the State of Texas.
The big picture
Natura's receipt of FLiBE salt represents a critical step in bridging legacy U.S. nuclear research with modern commercial deployment. The DOE's involvement underscores the strategic importance of molten salt reactors in the clean energy transition, particularly for industrial applications requiring reliable baseload power. With over $240 million in funding, Natura is positioning itself as a frontrunner in the advanced nuclear sector, though execution risks remain around supply chain and regulatory hurdles.
What we're watching
- Deployment Timelines
- How the salt delivery will accelerate Natura's MSR-1 deployment and subsequent commercial reactors.
- Regulatory Dynamics
- Whether Natura can maintain its lead in securing NRC permits for liquid-fueled reactors.
- Supply Chain Risk
- The pace at which Natura can establish alternative FLiBE salt supply chains to reduce DOE dependency.