Nuclear waste disposal technology company Deep Isolation announced it has successfully completed Project PUCK, a government-funded initiative to demonstrate the feasibility and potential commercial readiness of its Universal Canister System (UCS) to manage TRISO spent nuclear fuel.

Kairos Power announced this morning that safety-related nuclear construction has begun at the Oak Ridge, Tenn., site where the company is building its Hermes low-power test reactor. Hermes, a scaled demonstration of Kairos Power’s fluoride salt–cooled, high-temperature reactor technology, became the first non–light water reactor to receive a construction permit from the Nuclear Regulatory Commission in December 2023. The company broke ground at the site in July 2024.

Los Alamos National Laboratory recently performed a series of customized criticality experiments to obtain data that will support the transportation of HALEU TRISO fuel, the Department of Energy announced April 21.

The Department of Energy has announced its first round of conditional commitments to provide high-assay low-enriched uranium to five U.S. nuclear developers. According to the DOE, the delivery of HALEU will support the commercialization of advanced nuclear technologies, aiming to deliver secure, affordable, and reliable energy to Americans.

Texas lawmakers are considering legislative action this session on recommendations made last November by the Texas Advanced Nuclear Reactor Working Group.

Senate Bill 1105 calls for the establishment of a state-run advanced nuclear energy authority, a state permitting office, and an advanced nuclear innovation fund. Republican state Sen. Tan Parker introduced the bill.

Nuclear footprint: Texas currently has two large nuclear plants—Commanche Peak and South Texas Project—comprising four reactors that supplied nearly 10 percent of the state’s power last year.

Small modular reactors are also planned in Texas. Dow Chemical and X-energy are targeting a cluster of SMRs to support Dow’s manufacturing site in Seadrift on the Gulf Coast. At Abeline Christian University, about 200 miles west of Dallas, Natura Resources plans to install a test reactor using molten-salt cooling.

Texas A&M chancellor John Sharp has announced that the university could soon become a home to small modular reactors from four advanced nuclear companies: Kairos Power, Natura Resources, Terrestrial Energy, and Aalo Atomics.

The Department of Energy’s Gateway for Accelerated Innovation in Nuclear (GAIN) has awarded four fiscal year 2025 vouchers to support the development of advanced nuclear technologies. Each company will get access to specific capabilities and expertise in the DOE’s national laboratory complex—in this round of awards both Idaho National Laboratory and Pacific Northwest National Laboratory are named—and will be responsible for a minimum 20 percent cost share, which can be an in-kind contribution.

The Nuclear Regulatory Commission announced yesterday that it has directed staff to issue construction permits to Kairos Power for the company's proposed Hermes 2 nonpower test reactor facility to be built at the Heritage Center Industrial Park in Oak Ridge, Tenn. The permits authorize Kairos to build a facility with two 35-MWt test reactors that would use molten salt to cool the reactor cores.

Kairos Power and Google announced over the weekend a new power purchase agreement to provide the tech giant with 500 megawatts of clean energy by 2035.

Under the agreement, California-based Kairos Power will develop, construct, and operate a series of advanced reactor plants and sell energy, ancillary services, and environmental benefits to Google. Plants will be sited in “relevant service territories” to supply clean electricity to Google data centers. The first reactor is planned to be deployed by 2030 to support Google’s 24/7 carbon-free energy and net-zero goals.

Kairos Power broke ground yesterday on a Salt Production Facility at the company’s newly dedicated Manufacturing Development Campus during an event at a sprawling site in Mesa del Sol, N.M., just south of Albuquerque. The new facility will produce the FLiBe (a mixture of lithium fluoride and beryllium fluoride salts) needed to cool the advanced reactors Kairos Power plans to build, starting with its Hermes nonpower demonstration reactor in Oak Ridge, Tenn., and could be operational and producing salt in 2026, according to an October 3 Department of Energy news release.

Kairos Power accomplished another step forward for its Hermes 2 reactor plans as the Nuclear Regulatory Commission this week published its final environmental assessment and finding of no significant impact.

Earlier today, on a site in Oak Ridge, Tenn., that was formerly home to the K-33 Gaseous Diffusion Plant, Kairos Power marked the start of construction on its low-power demonstration reactor. Named Hermes, the 35-MWt test reactor claims status as the first Gen IV reactor to be approved for construction by the Nuclear Regulatory Commission and the first non–light water reactor to be permitted in the United States in more than 50 years.

Nuclear Regulatory Commission staff has completed its final safety evaluation for Kairos Power’s application to build its Hermes 2 molten salt–cooled reactor test facility in Oak Ridge, Tenn., the agency announced July 22. Earlier, and independently, the NRC’s Advisory Committee on Reactor Safeguards (ACRS) reviewed safety-related aspects of the Kairos application and provided its review to the Commission on July 17. The evaluation concluded that there are no safety aspects that would preclude issuing a construction permit for the facility, but that can’t happen until the NRC staff issues its final environmental assessment later this summer and the Commission assesses the staff’s work (under newly streamlined procedures for mandatory hearings) this fall before voting on whether to authorize a construction permit.

The American Nuclear Society is hosting an online event on Thursday, March 28, from 11:00 a.m. to 12:00 p.m. (EDT) on advanced reactors. The latest technological developments will be discussed by representatives from BWX Technology, Kairos Power, Oklo, and X-energy.

The event is open to all, but registration is required.

Kairos Power announced on February 21 that it has signed a technology investment agreement with the Department of Energy to implement the Advanced Reactor Demonstration Program (ARDP) Risk Reduction funding that the company was awarded in December 2020. Under the agreement, the DOE will provide up to $303 million to Kairos Power using a performance-based, fixed-price milestone approach to support the design, construction, and commissioning of the Hermes demonstration reactor in Oak Ridge, Tenn.

Kairos Power has received the go-ahead from the Nuclear Regulatory Commission to build its Hermes demonstration reactor at the Heritage Industrial Park in Oak Ridge, Tenn., making it the first non–light water reactor approved for construction in the United States in more than 50 years.

Kathryn Huff

President Dwight D. Eisenhower delivered his “Atoms for Peace” speech to the United Nations General Assembly in December 1953. In this historic address, he invoked the existential threat of nuclear weapons proliferation and the potential horror of nuclear war to muster the diplomatic energy of the United Nations toward establishing peaceful uses for the atom. The speech launched domestic and international initiatives, including the International Atomic Energy Agency, that would underpin decades of robust, peaceful nuclear power commercialization and expansion.

This month, as we celebrate the 70th anniversary of that speech, we celebrate Eisenhower’s prescience in suggesting that “experts would be mobilized to apply atomic energy to the needs of agriculture, medicine, and other peaceful activities” and “to provide abundant electrical energy in the power-starved areas of the world.” Mobilizing American experts, of course, would mean refocusing the work of the national laboratories toward peaceful uses of the atom and repurposing the vast weapons complex investments of the 1940s toward more peaceful ends.

A notice of opportunity from the Nuclear Regulatory Commission was published in the November 22 Federal Register to intervene in an adjudicatory hearing on Kairos Power’s application for a construction permit to build the Hermes 2 test reactor facility in Oak Ridge, Tenn.

The Nuclear Regulatory Commission staff has completed its final environmental impact statement (FEIS) for Kairos Power’s application to build the Hermes demonstration reactor in Oak Ridge, Tenn., and is advising that the construction permit (CP) be issued.

“After weighing the environmental, economic, technical, and other benefits against environmental and other costs, and considering reasonable alternatives, the NRC staff recommends, unless safety issues mandate otherwise, that the NRC issue the CP to Kairos,” the FEIS states.

Kairos Power has filed a construction permit application with the Nuclear Regulatory Commission for a two-unit version of its Hermes advanced test reactor.