advanced reactors

Project Pele, the Department of War’s (DOW’s) first-of-its-kind transportable nuclear microreactor prototype, has received its tri-structural isotropic (TRISO) particle fuel at Idaho National Laboratory (INL), where formal system testing is slated to begin as early as 2027. The fuel—manufactured by BWXT Technologies (BWXT) and shipped from its Lynchburg, Virginia, facility—represents the first TRISO microreactor fuel […]

Idaho National Laboratory (INL) has selected the five commercial teams that will potentially demonstrate advanced applications—including data center integration—at its much-watched Microreactor Application Research Validation and Evaluation (MARVEL) platform, an 85-kWth/20-kWe liquid-metal-cooled test bed currently under construction at the lab. The initial selections, unveiled on Dec. 4, mark the “first potential end users for MARVEL,” […]

Amazon has unveiled detailed plans and renderings for the Cascade Advanced Energy Facility, an initial 320-MW small modular reactor (SMR) complex that will serve as the first major project in its broader 5-GW nuclear partnership with advanced reactor developer X-energy, announced last year. The project will be owned, built, and operated by Energy Northwest just […]

The most significant week in transatlantic nuclear cooperation since the 1950s atomic partnership unfolded Sept. 14–24, 2025, as a coordinated surge of commercial agreements—totaling over $100 billion—spanned advanced reactor deployments, advanced nuclear fuel supply chains, nuclear waste management, maritime nuclear applications, engineering services, and regulatory harmonization. Formalized under the Atlantic Partnership for Advanced Nuclear Energy […]

Advanced nuclear technology firm Oklo has broken ground on its inaugural 75-MWe sodium-cooled fast reactor at an Idaho National Laboratory (INL) site. The project—one of three awarded to the company under the Department of Energy’s (DOE’s) newly established Reactor Pilot Program—is targeting operations between late 2027 and early 2028, though that timeline is contingent on […]

The U.S. Department of Energy (DOE) has unveiled three more companies to which it will allocate high-assay low-enriched uranium (HALEU) under conditional commitments in a bid to support advanced reactor development and domestic fuel production. The Aug. 26 announcement marks the second round of allocations under DOE’s HALEU Availability Program but it links to two […]

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 […]

Centrus Energy has produced and delivered 900 kilograms (kg) of High-Assay, Low-Enriched Uranium (HALEU) to the U.S. Department of Energy (DOE), completing Phase II of its pioneering enrichment contract with the agency. The shipment marks the first significant domestic production of HALEU—a specialized fuel required for many advanced reactors now under development—and stands as a […]

The U.S. Air Force has formally reaffirmed its selection of Oklo’s liquid metal-cooled fast reactor to provide nuclear energy at Eielson Air Force Base in Alaska, re-issuing a Notice of Intent to Award (NOITA) for the company’s Aurora Powerhouse following a comprehensive evaluation process. The June 10 announcement, issued by the Defense Logistics Agency Energy […]

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 […]

Recognizing their desirable attributes and long-term potential to meet data center demands for power, several technology companies have announced their intention to team up with nuclear developers. At the same time, three companies with shuttered nuclear plants have notified the U.S. Nuclear Regulatory Commission of their plans to restart those facilities, which were closed for economic reasons.

The U.S. Nuclear Regulatory Commission (NRC) has completed its draft safety evaluation (SE) a month ahead of schedule—albeit with open items—for TerraPower’s Kemmerer Power Station Unit 1, a pioneering 345-MWe sodium-cooled fast reactor (SFR) under development in Wyoming. Editor’s note: This article was substantially updated on Feb. 27 at 11 a.m. CST to provide deeper […]

Last Energy has formally launched the UK’s nuclear site licensing (NSL) process for plans to develop four 20-MWe microreactors in South Wales, becoming the first small modular reactor (SMR) developer to make the move. The UK Office for Nuclear Regulation (ONR) on Feb. 17 confirmed the U.S.-based nuclear technology firm’s entry into the critical licensing […]

Advanced nuclear technology firm Oklo is partnering with Texas-based prime and backup solutions company RPower to roll out an innovative “phased energy model” that will combine natural gas and nuclear to offer a scalable and sustainable turnkey solution for data centers. The companies on Jan. 17 said they signed a memorandum of understanding (MOU) to […]

DeepGEO, a multinational spent nuclear fuel (SNF) repository developer, and Copenhagen Atomics, a Danish advanced thorium reactor innovator, have signed a first-of-its-kind collaboration agreement that seeks to revolutionize the nuclear fuel cycle by aligning emerging waste management solutions with next-generation reactor technologies. The landmark collaboration marks an industry-first effort to unite a reactor designer and […]

As global nuclear ambitions surge, the industry’s fuel supply chain faces critical gaps. Can advanced fuels like HALEU (high-assay low-enriched uranium) and TRISO (TRi-structural ISOtropic particle fuel)

Ultra Safe Nuclear Corp. (USNC), a developer of much-watched microreactor technology and advanced nuclear fuel, has filed for Chapter 11 bankruptcy. The move signals a critical restructuring phase through which the company will seek to secure new ownership while ensuring uninterrupted operations. The company’s Oct. 29 filings at the U.S. Bankruptcy Court for the District […]

The U.S. Dept. of Energy (DOE) announced six companies have successfully bid to provide deconversion services for high-assay low-enriched uranium (HALEU) fuel to support advanced nuclear reactors. The DOE on October 8 announced the complete list of successful bidders. They include Nuclear Fuel Services, part of BWX Technologies (BWXT); American Centrifuge Operating, part of Centrus […]

The Nuclear Regulatory Commission (NRC) has granted Abilene Christian University (ACU) a construction permit to build its Molten Salt Research Reactor (MSRR) facility on the university’s campus in Texas. The approval is the regulatory body’s first for a liquid-fueled advanced reactor, the first for a research reactor in decades, and its second for any advanced […]

(Updated—June 1, 2024): Framatome and TerraPower will team to design and develop a pilot line for high-assay low-enriched uranium (HALEU) metallization, a crucial deconversion process, at Framatome’s nuclear fuel manufacturing facility in Richland, Washington. The pilot line, which will convert uranium oxide into HALEU metal, is scheduled to be ready for testing in early 2025, […]

British officials said the UK government will invest about £200 million (more than $251 million) for a project to build Europe’s first production facility for high-assay, low-enriched uranium (HALEU). Officials have said the fuel will be needed to supply the coming generation of nuclear power, including advanced nuclear reactors. Britain has said it wants to […]

The Nuclear Regulatory Commission (NRC) has granted Global Nuclear Fuel—Americas (GNF) the regulatory body’s first-ever authorization to produce nuclear fuel with uranium-235 (U-235) enrichments up to 8% for commercial power generation. GNF, GE Vernova’s nuclear fuel arm, on Feb. 15 said the NRC approved a license amendment that will allow its nuclear fuel fabrication facility […]

A roadmap released by the UK government on Jan. 11 aimed at quadrupling the country’s nuclear power capacity by 2050 sets out a series of goals and actions that could enable the delivery of 3 GW to 7 GW every five years from 2030 to 2044. In its 78-page Civil Nuclear Roadmap, the UK lays […]

The U.S. Department of Energy (DOE) has issued a request for proposals (RFP) for uranium enrichment and storage services as part of a measure aimed at stimulating a domestic supply chain for high-assay, low-enriched uranium (HALEU). The action follows an RFP released in November 2023 for services to deconvert enriched uranium into metal, oxide, and […]

The Department of Energy (DOE) has unveiled three nuclear microreactor developers that will design the first experiments at Idaho National Laboratory’s (INL’s) new Demonstration of Microreactor Experiments (DOME) test bed, which repurposes the Experimental-Breeder Reactor-II (EBR-II) containment structure.  Westinghouse, Radiant Nuclear, and Ultra Safe Nuclear Corp. (USNC) will receive a combined $3.9 million to further their […]

BREA, CA ­– July 14, 2023 – Curtiss-Wright’s Nuclear division announced today that its Brea, CA facility has received ISO 9001:2015 certification for its quality management system (QMS). This globally-recognized certification allows the company to provide valves, vessels, actuators, control systems, and engineering services for use in construction of next generation Advanced Reactor (AR) and […]

The Nuclear Regulatory Commission (NRC) has allowed Centrus Energy—a firm contracted by the  U.S. Department of Energy (DOE) to demonstrate high-assay low-enriched uranium (HALEU) production with domestic technology—to introduce uranium hexafluoride (UF6) into its uranium enrichment centrifuge cascade in Piketon, Ohio. The development marks yet another critical milestone for Bethesda, Maryland–headquartered company in its efforts […]

Nuclear energy—not just nuclear power—is seeing a burst of innovation unlike anything seen since the 1950s. While the strong momentum for the dispatchable zero-carbon energy source is promising, prominent pitfalls threaten necessary progress.

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. […]

The American Nuclear Society (ANS) warned the U.S. Department of Energy (DOE) that the continued unavailability of high-assay low-enriched uranium (HALEU) fuel within the United States is risking “significant deployment delays” of advanced reactors. In a February 14th letter,  ANS President Steven Nesbit and ANS Executive Director and CEO Craig Piercy urged the DOE to expedite the creation of a HALEU availability […]