In a notable, dedicated effort by a major U.S. utility to boost the development of an advanced reactor technology, the Tennessee Valley Authority (TVA) and Kairos Power, developer of a novel fluoride salt-cooled, high-temperature nuclear reactor, on May 6 said they will team to demonstrate Kairos’ Hermes test reactor at the East Tennessee Technology Park (ETTP) in Oak Ridge, Tennessee.

As part of their agreement, TVA will provide engineering, operations, and licensing support to help California-based Kairos Power deploy its “low-power” demonstration reactor. According to Kairos, Hermes is a 50-MWth test reactor that will integrate the Kairos Power Fluoride Salt-Cooled High-Temperature Reactor (KP-FHR) as part of a cost- and risk-reduction–focused development pathway that ultimately envisions commercial deployment of a 140-MWe “KP-X” plant.