December 16, 2025

Aalo Achieves Major Milestone With First Module Shipment to Idaho ()

Portfolio company Aalo Atomics officially announced at the Aaloverse Summit that it has shipped its first five Aalo-0 modules from Austin to the Idaho National Laboratory, validating its mass-manufacturing approach ahead of 2026 reactor criticality...

December 11, 2025

Energy Secretary Highlights Nuclear Revival as Radiant Prepares INL Microreactor Test ()

During a visit to Idaho National Lab, Energy Secretary Chris Wright underscored the administration’s push for a nuclear “renaissance,” with Radiant’s microreactor slated for testing in the INL DOME ahead of a July 2026 milestone.

December 11, 2025

INL Produces First-Ever Fuel Salt for Fast Molten Salt Reactor, Advancing CORE POWER’s Maritime Pathway ()

INL has produced the world’s first enriched chloride fuel salt for a fast molten salt reactor experiment — a major step for the MCRE project, involving CORE POWER, Southern Company, TerraPower, and the DOE...

November 20, 2025

Radiant Advances Toward First Reactor Startup with DOE Safety Submission ()

Radiant has submitted its safety analysis to the Department of Energy, triggering a 45-day review that keeps the company on track to start up its first Kaleidos reactor at INL’s DOME facility next year...

April 26, 2025

Radiant Selected by DOE to receive HALEU Fuel for Reactor Test ()

Radiant, a Nucleation portfolio company working to mass produce portable nuclear microreactors, was selected by the Department of Energy to receive an allocation of HALEU fuel for its first test of Kaleidos, the group’s reactor design.

July 25, 2023

A New Oppenheimer Moment

We've had a resurgence of interest in and conversation about nuclear energy since the release at the end of April of Oliver Stone's exceptional documentary, Nuclear Now. But Stone's historic film, much like Robert Stone's Pandora's Promise and Dave Schumacher's The New Fire, before it, suffers from the endemic unpopularity of documentaries. People don't flock to theaters to see them. Which made (what was called) "Barbenheimer,"  the culturally clashing concurrence of opening nights for Greta Gerwig's very pink Barbie movie and Christopher Nolan's explosive Oppenheimer so different. Theaters were packed. People went to see them as double-features. The press had a field day for a week and both films exceeded box-office expectations, providing welcome relief for movie theaters everywhere.

The public is, as a result, reacquainted with J. Robert Oppenheimer (JRO to those who knew him) and his tortured if heroic role in leading the U.S.'s war time emergency program, dubbed "The Manhattan Project," to a successful conclusion: creation of the first atomic bomb. Whether or not this crowning achievement by the secretive project—that recruited the world's top physicists, engineers and scientific minds to Los Alamos, a remote area in New Mexico—and let the atomic genie out of bottle was a net positive or a net negative, may still be debated. But now that it has, we must rely on our ability to self-regulate the use of this technology for good, as JRO understood so well.

We are now in the throes of sorting out how best to limit nuclear bombs but expand the beneficial uses of atomic tech for energy, industry, agriculture and medicine. Which is why we were so pleased to have been connected with Charles Oppenheimer some weeks ago and to have been invited to participate in the Oppenheimer Exchanges, a day long event bringing together leadership from within the DOE's National Labs and a few business groups, orchestrated to coincide with opening night for the Oppenheimer film. Fortunately, this included tickets to the San Francisco premiere at the Metreon iMax Theatre and a brief pre-screening conversation between younger members of the Oppenheimer family, who provided some perspective on the family's legacy and ongoing initiatives. 

For many of us, this was an eye-opening discussion. It was just in December of 2022, that the DOE finally restored Oppenheimer’s long lost—but still widely lauded reputation—with an order vacating the Atomic Energy Commission's 1954 decision to revoke JRO's security clearance. While largely symbollic, since JRO died in 1967, the DOE's order, and Secretary Granholm's Statement about it, addressed and began to reverse the damage that had been done to the Oppenheimer name, through what the DOE called a "flawed" process.

In 1954, the Atomic Energy Commission revoked Dr. Oppenheimer’s security clearance through a flawed process that violated the Commission’s own regulations. As time has passed, more evidence has come to light of the bias and unfairness of the process that Dr. Oppenheimer was subjected to while the evidence of his loyalty and love of country have only been further affirmed. The Atomic Energy Commission even selected Dr. Oppenheimer in 1963 for its prestigious Enrico Fermi Award citing his “scientific and administrative leadership not only in the development of the atomic bomb, but also in establishing the groundwork for the many peaceful applications of atomic energy.” 

Among scientists and those who knew Oppenheimer's legacy, vindication had already begun as far back as 1963, when the Atomic Energy Commission selected Oppenheimer for the prestigious Enrico Fermi Award for his "scientific and administrative leadership not only in the development of the atomic bomb, but also in establishing the groundwork fo rthe many peaceful applications of atomic energy."

Then, in 2017, the DOE recognized JRO with the creation of the Oppenheimer Science and Energy Leadership Program, which was designed to support early and mid-career scientists and engineers to "carry on [RJO's] legacy of science serving society."

This DOE program has now graduated multiple cohorts. Many of these alumni gathered in San Francisco to discuss the Oppenheimer legacy and explore relevant topics, in particular the need for science and scientists to rise to the challenge of solving global crises with technology. Oppenheimer's leadership example is a model by which the scientific community can organize itself to tackle problems, such as climate change.  Given how badly we are doing responding to the threat posed by climate change, this is a very welcome concept.

 The Oppenheimer Science and Energy Leadership Program (OSELP) run by the DOE is “the premier leadership development program of the national Laboratory Directors’ Council, which comprises the leadership of all 17 National Labs.  The program exposes emerging leaders to the singular breadth, diversity and complexity of the National Labs and their partners in government, industry, and academia. OSELP represents a collective commitment from all 17 DOE labs to cultivate the leaders needed to sustain long-term impacts throughout the complex. Out of the OSELP has grown an alumni group now called the Oppenheimer Leadership Network, who are those who have been through the OSELP program.  The OLN is the formal network of ESELP alumni to collaboratively engage on strategic issues and produce deliverables that address major organizational, policy, scientific or other challenges within the National Labs’ mission space. We were pleased to meet many members of the OLN at the event. Now the Oppenheimer family has a new vision.  They are aiming to develop several initiatives, under the banner of The Oppenheimer Project, whose mission is to promote and advocate for solutions to mitigate the risks posed by technological development.   1) Promote JRO’s legacy and encourage scientific leaders to discuss and address today’s existential threats.2) Advocate and educate about nuclear energy, for increased cooperation on energy and decreased threats of weapons.3) Invest in the energy transition to carbon-free energy sources including nuclear energy. Already, Charles Oppenheimer, JRO's grandson, has come out strongly for nuclear power in a Time Magazine Ideas article, entitled Nuclear Energy's Moment Has Come, published May 11, 2023. In it, Charles calls for a "Manhattan Project" for carbon-free energy production.

In addition to having the support of the younger members of the Oppenheimer family, The Oppenheimer Project has received the support of Lynn Orr, a former Under Secretary for Science and Energy at the DOE and now at Stanford University, and Dr. Larry Brilliant, a physician, epidemiologist and senior counselor at the Skoll Foundation, as advisers. There are now some dozens of graduates of the OSELP and OLN members who could also participate. Given how poorly we are doing mounting the appropriate response to the threat from continued emissions, extending Oppenheimer's inimitable complex project management legacy to tackling this new global challenge has the potential to be significant development in the fight against climate change. 

September 13, 2022

DOE finds that 80% of US coal plants could be converted to nuclear


AI rendering of a coal plant.

According to a new DOE report, hundreds of coal plant sites could be suitable for conversion from coal to nuclear energy in an economically-viable way. In fact, as much as 80% of qualifying retired and operating coal plants appear to have the capacity to undergo what the report calls the "Coal-to-Nuclear" (C2N) transition. (Note: we have previously reported on efforts to develop standardized and efficient  processes for this conversion to happen quickly.)

Amy Roma, an attorney with Logan Hovells writes:

"The 127-page DOE report concludes that hundreds of United States coal power plant sites could be converted to nuclear power plant sites, adding new jobs, increasing economic benefit, and significantly improving environmental conditions. As part of the study contained in the report, the research team examined over 400 retired and operating coal plants based on a set of ten screening parameters, including population density, distance from seismic fault lines, flooding potential, and nearby wetlands, to determine if the sites could safely host a nuclear power plant. After screening, the research team identified 157 retired coal plants and 237 operating plants as potential candidates for a coal-to-nuclear transition. The report determined that 80% of those potential sites, with over 250 GW of generating capacity, are suitable for hosting advanced nuclear power plants, and that while these nuclear power plants vary in size and type, they could be deployed to match the size of the site being converted.  See DOE Report at pp. 2, 22, 71."

According to the DOE's Investigating Benefits and Challenges of Converting Retiring Coal Plants into Nuclear Plants report, a coal-to-nuclear transition could increase nuke capacity in the U.S. to more than 350 GW.

Power Magazine reports that, depending on the technology used, nuclear overnight costs of capital could decrease by 15% to 35% when compared to a greenfield construction project, through the reuse of infrastructure from the coal facility.

In a case study replacing a large 1200 MW coal plant with NuScale’s 924 MWe of nuclear capacity, the study teams found regional economic activity could increase by as much as $275 million and add 650 new, permanent jobs to the region analyzed. Nuclear can have a lower capacity size because it runs at a higher capacity factors than coal power plants.

In general, DOE says the occupations that would see the largest gains from a coal-to-nuclear transition include nuclear engineers, security guards, and nuclear technicians. Nuke plants could also benefit from preserving the existing experienced workforce in communities around retiring coal plants sites.

Read more at Reuters: About 80% of U.S. coal plant sites suitable to host nuclear reactors -U.S. DOE report, published September 13, 2022. Power Magazine, "DOE study finds hundreds of U.S. coal plants could convert to nuclear," by Kevin Clark, published September 14, 2022. And Hogan Lovell's Engage, with analysis by Amy Roma, entitled "New DOE Report shows former coal plants can support new nuclear plants and a just energy transition," published September 20, 2022.

March 28, 2022

Katy Huff

Dr. Kathryn D. Huff serves as the Acting Assistant Secretary and Principal Deputy Assistant Secretary for the Office of Nuclear Energy. Prior to her current role, she was an Assistant Professor in the Department of Nuclear, Plasma, and Radiological Engineering at the University of Illinois at Urbana-Champaign where she led the Advanced Reactors and Fuel Cycles Research Group. She was also a Blue Waters Assistant Professor with the National Center for Supercomputing Applications.

Before joining the Department of Energy, Dr. Huff was an Assistant Professor in the Department of Nuclear, Plasma, and Radiological Engineering at the University of Illinois at Urbana-Champaign where she led the Advanced Reactors and Fuel Cycles Research Group and taught reactor theory and the future of energy. She was also a Blue Waters Assistant Professor with the National Center for Supercomputing Applications. She was previously a Postdoctoral Fellow in both the Nuclear Science and Security Consortium and the Berkeley Institute for Data Science at the University of California - Berkeley.

Dr. Huff received her Ph.D. in Nuclear Engineering from the University of Wisconsin-Madison in 2013 and her undergraduate degree in Physics from the University of Chicago. Her research focused on modeling and simulation of advanced nuclear reactors and fuel cycles.

She is an active member of the American Nuclear Society, Chair of the Nuclear Nonproliferation and Policy Division, a past chair of the Fuel Cycle and Waste Management Division, and recipient of both the Young Member Excellence and Mary Jane Oestmann Professional Women's Achievement awards. Through leadership within Software Carpentry, SciPy, the Hacker Within, and the Journal of Open Source Software, she also advocates for best practices in open, reproducible scientific computing.

https://www.youtube.com/watch?v=YnsOPodptHQ&t=86s

_______________

Sources:

University of Illinois Alumni: In Class Power Source: Nuclear engineer Katy Huff on teaching with IPythons, reactor theory and the future of energy
DOE Office of Nuclear Energy:  Dr. Kathryn Huff, Senior Advisor, Office of the Secretary.

March 1, 2022

Rita Baranwal

Dr. Rita Baranwal is the Chief Nuclear Officer at Radiant, a Nucleation portfolio company that pioneers the world’s first mass-produced portable nuclear microreactor. She brings decades of leadership in nuclear innovation, policy, and engineering.

Dr. Rita Baranwal was nominated by the President to serve as the Assistant Secretary for the Office of Nuclear Energy (ONE) and was confirmed by the U.S. Senate on June 20, 2019 (by a vote of 86 to 5),  becoming the first woman to ever lead the Office of Nuclear Energy.

In that role, Dr. Baranwal directed programs to promote research and development (R&D) on existing and advanced nuclear technologies that sustain the existing U.S. fleet of nuclear reactors, enable the deployment of advanced nuclear energy systems, support nuclear technology for space and defense applications, and enhance the U.S.A.'s global commercial nuclear energy competitiveness. She also:

  • Launched innovative programs to demonstrate advanced nuclear reactor designs, launched a new U.S. reactor innovation center, and a unique private-public partnership to develop new U.S. nuclear testing capabilities
  • Collaborated with U.S. intergovernmental agencies (e.g. Departments of State, Commerce, and Treasury, National Security Council, Office of Science & Technology Policy, Nuclear Regulatory Commission, Development Finance Corporation) to globally deploy new U.S. civil nuclear technology.
  • Implemented civil nuclear agreements with two countries; initiated civil nuclear agreement discussions with eleven countries.
  • Partnered with NASA on nuclear technology and expertise for space exploration. Contributed to the National Strategy for Space Nuclear Power and Propulsion, Executive Order on Reactors for Space Exploration, and DOE’s Space Strategy.
  • Managed Congressionally-enacted budget of $1.5B (FY20).
  • Served as the Equity in Energy Champion for DOE’s Office of Economic Impact and Diversity.

Following her service as the #1 at ONE, Dr. Baranwal served as the VP of Nuclear and Chief Nuclear Officer for the Electric Power Research Institute (EPRI) for over a year. As of 2022, Dr. Baranwal has returned to Westinghouse as the Chief Technology Officer.

Prior to her appointment to the ONE, Dr. Baranwal served as the director for the DOE's Gateway for Accelerated Innovation in Nuclear (GAIN) since 2016, an initiative hosted at Idaho National Laboratory. GAIN is the way the U.S. Government connects industry with national laboratories to help commercialize nuclear technologies. Under her leadership, GAIN positively impacted 112 projects and companies.

Before that, Dr. Baranwal worked for Westinghouse in the nuclear fuel division, leading a number of research and development programs. She started her career at Bettis Atomic Power Laboratory helping to develop advanced nuclear fuel materials for US naval reactors.

Dr. Baranwal has a bachelor’s degree from Massachusetts Institute of Technology in materials science and engineering and a master’s degree and Ph.D. in the same discipline from the University of Michigan.

_______________

Sources:

LinkedIn: Dr. Rita Baranwal
NayaFace: Rita Baranwal sworn in as 1st woman US Assistant Secretary for Nuclear Energy at DOE,
July 25, 2019.



							
						
			
							
						

December 20, 2021

A 70th Anniversary for Fission

70 years ago today, on December 20, 1951, the first Experimental Breeder Reactor (EBR-I, pictured below at left) came online at the Idaho National Laboratory to produce usable electricity through fission.  The reactor, initially used to power four 200-watt lightbulbs, was increased to power the whole facility on its second day. While small, the reactor provided scientists with the ability to do a lot of testing. These tests, both successful and unsuccessful, enabled a lot of other reactors, including the EBR-II and coming soon, the Oklo Aurora, to follow with considerable design improvements. In 1966, President Lyndon Johnson declared the EBR-I a National Historic Landmark.

The EBR-I was a liquid metal-cooled fast reactor that used a liquid sodium coolant which transfers heat much better than today's light water reactors.  The second Experimental Breeder Reactor (EBR-II), which operated from 1961 to 1994, ran for more than 30 years quite successfully. However the potential hazards of a sodium leak combined with water was a deterrent to the use of this type of reactor in a submarine. The Navy wanted to have nuclear-powered submarines and opted to use the pressurized light water reactor, that used sea water as its coolant. This choice influenced the later commercial adoption of water cooled reactors on land, even though there were risks associated with the need to replicate an underwater environment to cool the LWRs built on the land.

Which makes the 2020 submission by Oklo to the NRC of a 4th Generation liquid-metal cooled fast reactor not just historic but also somewhat ironic. It's taken 70 years and a catastrophic climate crisis to finally get back to basics, and reassess the potential of the metallic fuel, liquid-metal collant system that was initially deemed the superior choice for electricity generation on land.

Learn more at the Office of Nuclear Energy's 9 Notable Facts About the World's First Nuclear Power Plant - EBR-1, written on June 18, 2019 and posted to the DOE's ONE Facebook page in honor of the 70th anniversary.  Listen to the Boise State Public Radio News report, Idaho experiment that showed nuclear power was more than a weapon turns 70 years old, by Madelyn Beck.

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