Updates
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December 23, 2025
Kairos Power Completes Precast Concrete Shielding Demonstration
Kairos Power has completed the installation of a prefabricated concrete shielding structure at our Oak Ridge campus in Tennessee. The advanced construction method will be used for portions of the Hermes Low-Power Demonstration Reactor facility and scaled up for future plants to help shorten construction timelines and lower costs.
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October 21, 2025
Clean Electricity for the Tennessee Valley
In this issue: Building the Hermes demonstration reactor; partnering with Google and TVA for Hermes 2; bringing our second Engineering Test Unit to life; making fuel and salt, and more.
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October 20, 2025
Producing a 1960s Molten Salt Coolant for 21st Century Reactors
Kairos Power advanced reactors offer robust, inherent safety with a simplified, compact design. It’s all possible thanks to a molten salt coolant known as “Flibe,” which, combined with TRISO fuel, forms the basis of Kairos Power’s reactor technology. In this article, we’ll take you through our journey from lab to pilot to commercial scale to produce the specialized material and close domestic supply chain gaps.
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May 30, 2025
First Nuclear Concrete
The Kairos Power team kicks off 2025 with major milestones: first nuclear concrete pour for the Hermes Demonstration Reactor, operator training simulator laboratory launches at the University of Tennessee, Knoxville (UTK), Engineering Test Unit (ETU) 2.0 build progress advances, and more.
