On Thursday, Oklo announced that the Department of Energy’s Idaho Operations Office had approved the preliminary documented safety analysis (PDSA) for the company’s first deployment of its Aurora Powerhouse, which is currently under construction at Idaho National Laboratory.

It is the most recent in a long series of announcements from the 10 companies participating in the Reactor Pilot Program, which has a fast-approaching criticality deadline of July 4.

The final executive session of the American Nuclear Society’s 2026 Annual Conference was titled “With Great Processing Power Comes Great Responsibility: Ethics and Opportunities for AI and Tomorrow’s Workforce.”

On June 1 at the American Nuclear Society’s Annual Conference in Denver, Colo., a team from Idaho National Laboratory presented a session titled “Lessons Learned from MARVEL Reactor Fabrication.” The presentation highlighted challenges that arose as they moved from design to manufacturing and assembly, with a focus on reactor part fabrication, Stirling engine implementation, and reactivity control system development.

Leveraging more than $140 million in private capital fundraising, over 322,000 square feet of operational manufacturing space, and multifaceted partnerships with the Departments of Energy and Defense, reactor start-up Antares has become the first company involved in the Reactor Pilot Program to achieve zero-power fueled criticality—a full month ahead of the July 4 deadline set by President Trump’s Executive Order 14301.

This milestone, announced yesterday, was achieved with the company’s Mark-0, a forerunner to the R1, which is the company’s flagship design. The R1 is a sodium heat-pipe-cooled, TRISO-fueled microreactor. The Mark 0 is distinct from the R1 in that it is configured for zero-power criticality testing and as such is equipped with neither power conversion nor heat removal systems.

For Antares, this development represents a key validation of its reactor physics, control systems, and supply chain.

Two companies specializing in ultrasonic nondestructive testing and structural health monitoring are to advance to the final phase of a selection process to demonstrate acoustic emission technologies for the automated monitoring of spent nuclear fuel dry storage canisters.

On Tuesday, during Mark Peters’s last days as the American Nuclear Society’s vice president/president-elect before assuming the presidency on June 4, he sat down with ANS CEO Craig Piercy for a Fireside Chat at the Annual Conference.

The MITRE CEO weighed in on his career path, what excites and worries him about the resurgence of nuclear energy, and juggling work-life balance with his new duties as ANS’s 72nd president.

“It’s going to be a lot of fun. It’s an important year,” he told Piercy.

On Tuesday, the National Reactor Innovation Center hosted an industry day for the Nuclear Energy Launch Pad, providing a forum for companies to learn more about how the program works, timelines, collaboration with the various entities involved, and available resources.

The launch pad is a long-term program stemming from the Reactor Pilot Program and Fuel Line Pilot Program. It aims to fast-track regulatory processes for new reactors and fuel facilities that meet certain milestones.

Earlier this week, Idaho National Laboratory announced that its Structural Properties Laboratory (SPL) has been fully operational since January. Located at INL’s Materials and Fuels Complex, the SPL houses the lab’s first new hot cell in 50 years.

Utah State University and Battelle Energy Alliance, an Idaho National Laboratory contractor, have signed a memorandum of understanding, committing to a Strategic Understanding for Premier Education and Research (SUPER) agreement, which formalizes and expands the university’s collaboration with INL.

Clean Core Thorium Energy has announced the completion of its nearly two-year ANEEL fuel irradiation testing and qualification campaign at Idaho National Laboratory.

The idea behind ANEEL (Advanced Nuclear Energy for Enriched Life) fuel is to provide existing pressurized heavy water reactors with a fuel option that has increased high-burnup performance without requiring any modification to the reactors.

The Department of Energy’s Office of Environmental Management has announced that its Idaho Cleanup Project (ICP) recently received department approval for the conceptual design for a spent nuclear fuel staging facility project at Idaho National Laboratory.

As the United States faces surging electricity demand driven by artificial intelligence, data centers, and a push to bring manufacturing back home, Idaho National Laboratory is leading an effort to modernize and expand the nation’s nuclear power capabilities by revamping the Department of Energy’s Light Water Reactor Sustainability (LWRS) Program.

The Department of Energy on April 22 issued two requests for applications seeking proposals from private industry on kickstarting the reprocessing and recycling of spent nuclear fuel in the United States.

According to the DOE, the RFAs represent an unprecedented opportunity for the private sector to restore the nation’s nuclear leadership.

Heavy metal rods are placed into large stainless steel TRIGA spent fuel canisters to test their load-bearing capabilities. (Photo: DOE)

The Department of Energy’s Office of Environmental Management announced last week that it is preparing to receive a shipment of spent nuclear fuel from Penn State University’s research reactor. The fuel is being shipped to Idaho National Laboratory for research purposes.

DOE-EM said crews with the Idaho Cleanup Project recently fabricated and tested four stainless steel canisters that will be used to receive and store the used TRIGA fuel. (“TRIGA” stands for “Training, Research, Isotope, General Atomics.”)

The Carbon Free Power Project (CFPP) called for the deployment of six 77-MWe pressurized water reactors at Idaho National Laboratory that would provide power to INL and to Utah Associated Municipal Power Systems (UAMPS) customers in Utah and surrounding states. But UAMPS and NuScale Power mutually agreed to end the project in late 2023, ending a first-of-a-kind SMR project that was years in the making.

Total project costs, had it been completed, were estimated at $8.03 billion, with $1.36 billion coming from the Department of Energy as part of a 10-year, noncompetitive, cost-share award.

On Wednesday, Idaho National Laboratory announced that the National Reactor Innovation Center’s Demonstration of Microreactor Experiments (DOME) test bed is now “open for business.”

With DOME’s opening, microreactor developers will soon be able to test, demonstrate, and validate their reactor designs. Rian Bahran, the Department of Energy’s deputy assistant secretary for nuclear reactors, called this “essential infrastructure” a “testament to our commitment to a robust nuclear future” and a key tool for “accelerating the development and deployment” of new energy technologies.

Nuclear technology start-up Project Omega announced that it has been awarded a contract through the Department of Energy’s Advanced Research Projects Agency-Energy (ARPA-E) to advance used nuclear fuel recycling. Project Omega said the award will be used to validate key components of its molten salt electrochemical recycling platform designed to process UNF, recover valuable isotopes, and reduce long-term waste management challenges.

The White House is requesting $1.5 billion for the Department of Energy’s Office of Nuclear Energy in the fiscal year 2027 budget proposal, about 9 percent less than the previous year.

The request from the Trump administration is one of several associated with nuclear energy in the proposal, which was released Friday. Congress still must review and vote on the budget.

The Department of Energy announced the completion of a proof-of-concept demonstration of the use of Everstar’s AI tool to generate chapter 5 of an NRC license application from preliminary safety documents.

The 208-page document was created by the AI tool in approximately one day. According to the DOE, it would typically take a team of people between four and six weeks to complete this work.

The American Nuclear Society recently hosted a panel discussion featuring prominent figures from the nuclear sector who discussed the industry’s ongoing push for criticality.

Yasir Arafat, chief technical officer of Aalo Atomics; Jordan Bramble, CEO of Antares Nuclear; and Rita Baranwal, chief nuclear officer of Radiant Industries, participated in the discussion and covered their recent progress in the Department of Energy’s Reactor Pilot Program. Nader Satvat, director of nuclear systems design at Kairos Power, gave an update on the company’s ongoing demonstration projects taking place outside of the landscape of DOE authorization.