Kairos Power

The Tennessee Valley Authority (TVA) has signed a first-of-its-kind power purchase agreement (PPA) with advanced nuclear technology firm Kairos Power to buy power from the company’s planned Hermes 2, a molten salt nuclear reactor in Oak Ridge, Tennessee. The deal makes TVA the first U.S. utility to contract for electricity from a Gen-IV reactor. Under […]

In a new pilot program, the U.S. Department of Energy (DOE) issued an ambitious challenge: bring at least three advanced nuclear test reactors to criticality by July 4, 2026. Announced in June, the program sidesteps traditional Nuclear Regulatory Commission (NRC) licensing, seeking instead to authorize full-scale reactors on private sites through DOE’s internal review process. […]

In a critical step aimed at bolstering advanced reactor development and their domestic nuclear fuel readiness, the U.S. Department of Energy (DOE) has issued its first round of allocations for high-assay low-enriched uranium (HALEU) under its HALEU Availability Program to five American nuclear developers. On April 9, the DOE said it made conditional commitments to […]

The Nuclear Regulatory Commission (NRC) has taken a historic step by voting to issue construction permits for Kairos Power’s 70-MWth Hermes 2, a “low power” advanced test facility comprising two 35-MWth molten salt reactors. “Following the Commission’s vote, Hermes 2 is now the first electricity-producing Gen IV plant to be approved for construction in the […]

In a deal that marks the first corporate agreement to deploy multiple small modular reactors (SMRs) in the U.S., Kairos Power and Google have signed a Master Plant Development Agreement to facilitate the development of a 500-MW fleet of molten salt nuclear reactors by 2035 to power Google’s data centers. The first reactor is expected […]

The Nuclear Regulatory Commission (NRC) has wrapped up its final safety evaluation for Kairos Power’s Hermes 2 “low power” advanced test facility, comprising two 35-MWth test molten salt reactors—similar to the Hermes 1 “non-power” demonstration reactor for which the regulatory body issued a construction permit in December 2023.  The NRC’s action, announced on July 22, […]

The Nuclear Regulatory Commission (NRC) has approved a construction permit for Kairos Power’s 35-MWth Hermes molten salt “non-power” demonstration reactor, which the firm has proposed to build at the East Tennessee Technology Park Heritage Center (ETTP) site in Oak Ridge. The NRC on Dec. 12 directed staff to issue the construction permit for the test reactor […]

The Nuclear Regulatory Commission (NRC) has wrapped up a final safety evaluation for Kairos Power’s 35-MWth Hermes “non-power” demonstration reactor, which the firm has proposed to build at the East Tennessee Technology Park Heritage Center site in Oak Ridge, and plans to begin operating by 2026. The NRC’s review, which concluded “no safety aspects that would […]

Kairos Power, an advanced nuclear reactor developer, has commissioned a molten salt purification plant (MSPP) that will produce “large quantities” of a high-purity coolant for reactors based on its fluoride salt-cooled, high-temperature reactor (KP-FHR) technology. The MSPP, one of the largest of its kind, is located at materials supplier Materion Corp.’s campus in Elmore, Ohio. […]

Leaders in Tennessee and officials from Kairos Power announced last week that a privately funded project to establish a low-power demonstration reactor at the East Tennessee Technology Park in Oak Ridge is moving forward. Alameda, California-based Kairos Power plans to invest $100 million and create 55 jobs to deploy its demonstration reactor, called Hermes. The […]