Oklo Advances Fuel Strategy Through U.S. DOE Plutonium Program Selection
Oklo, the advanced nuclear technology company focused on developing next-generation fast reactor systems, has announced a major milestone in its long-term fuel supply strategy after being selected by the U.S. Department of Energy for advanced negotiations under the Surplus Plutonium Utilization Program. The initiative is designed to make designated surplus plutonium material available to qualified industry participants and support the conversion of that material into fuel for advanced nuclear reactors while maintaining strict national security, safeguards, and material accountability standards.
The selection marks an important development for Oklo as the company continues to position itself as a leader in the rapidly evolving advanced nuclear energy sector. The DOE program aims to address one of the industry’s most pressing challenges: securing reliable fuel supplies for advanced reactor deployment. By enabling the use of surplus plutonium material that has historically been reserved for disposal, the initiative could create a new pathway for powering next-generation nuclear systems while also addressing long-term material management concerns.
Oklo was selected alongside four other advanced nuclear companies, underscoring growing federal support for innovative nuclear fuel cycle solutions that can accelerate the commercialization of advanced reactors in the United States. The company stated that participation in the program aligns closely with its broader fuel sourcing strategy, which is focused on creating multiple pathways for obtaining reactor fuel as domestic enrichment and fuel fabrication capabilities continue to expand.
The announcement also highlights the strengthening collaboration between Oklo and newcleo, a European developer of advanced nuclear reactors and fuel technologies. Under the proposed arrangement, Oklo would lead efforts related to the utilization of surplus plutonium within the United States, while newcleo would contribute its experience in advanced fuel systems as well as potential project capital support. Any future collaboration would remain subject to definitive agreements, regulatory approvals, and compliance with U.S. security and safeguards requirements.
Executives from both companies emphasized that the initiative could serve as a practical example of “disposition through use,” a concept that seeks to transform existing nuclear materials into productive energy resources rather than treating them solely as waste liabilities. Through this approach, surplus plutonium would be converted into reactor fuel capable of generating carbon-free electricity while being consumed through the fission process under rigorous oversight and security protocols.
Oklo co-founder and Chief Executive Officer Jacob DeWitte described fuel availability as one of the biggest constraints currently facing the advanced reactor industry. According to DeWitte, the DOE program has the potential to create an important bridge fuel solution that could help bring advanced reactors online faster while broader domestic fuel infrastructure continues to mature.
He noted that materials previously designated for disposal could instead be repurposed to generate electricity, offering both energy and environmental benefits. The approach, he said, demonstrates how advanced nuclear technologies can help address multiple strategic challenges simultaneously, including energy security, clean power generation, and long-term nuclear material management.
For Oklo, the DOE selection represents another significant step in the company’s broader mission to commercialize compact fast reactors capable of delivering reliable, clean baseload power. The company has consistently emphasized the importance of developing vertically integrated fuel strategies that can support reactor deployment timelines and reduce dependence on limited fuel supply chains.
The collaboration with newcleo also reflects the increasingly international nature of advanced nuclear development. newcleo founder and CEO Stefano Buono said the partnership demonstrates a shared commitment to reducing nuclear liabilities through advanced fuel and reactor technologies. He praised the United States for taking what he described as a forward-looking and innovative approach to the nuclear fuel cycle and said newcleo looks forward to contributing technical expertise to the initiative.
The partnership between Oklo and newcleo has been steadily expanding over the past year. In October 2025, the two companies announced a strategic agreement focused on developing advanced fuel fabrication infrastructure in the United States. The collaboration includes potential projects related to surplus plutonium utilization and could support the establishment of future fuel fabrication capabilities necessary for advanced reactor deployment.
As part of that arrangement, newcleo committed to exploring investments of up to $2 billion through an affiliated investment vehicle, subject to industry conditions and mutually acceptable agreements. The proposed funding could support the construction and development of fuel fabrication infrastructure and related advanced nuclear technologies within the U.S. market.
The companies view fuel fabrication as a critical component of building a sustainable advanced nuclear ecosystem. While significant progress has been made in advanced reactor design and commercialization, fuel availability remains one of the sector’s most significant bottlenecks. Many advanced reactor developers rely on specialized fuels that require new enrichment, processing, and fabrication capabilities that are still under development in North America and Europe.
The DOE’s Surplus Plutonium Utilization Program could therefore provide an interim solution by making existing material available for conversion into reactor fuel. Industry observers believe the initiative may also help reduce reliance on foreign nuclear fuel supply chains while strengthening domestic energy security and advancing U.S. leadership in advanced nuclear technologies.
The collaboration is also progressing on the regulatory front. In February 2026, newcleo initiated pre-application engagement with the U.S. Nuclear Regulatory Commission regarding both an advanced fuel fabrication facility and its lead-cooled fast reactor design. The discussions are intended to support the eventual deployment of newcleo’s fuel fabrication and reactor technologies in the United States.
Pre-application engagement with the NRC is considered an important early step in the licensing process, allowing companies to work closely with regulators before submitting formal applications. Such engagement can help identify technical and regulatory considerations early in development and may streamline future licensing efforts.
The timing of Oklo’s DOE selection comes amid renewed global interest in nuclear power as governments and energy companies search for reliable low-carbon energy solutions capable of supporting growing electricity demand. Advanced nuclear technologies, including small modular reactors and fast reactors, are increasingly being viewed as essential tools for meeting long-term climate goals while also supporting grid reliability and industrial energy needs.
Unlike traditional large-scale nuclear plants, many advanced reactor designs aim to provide more flexible deployment options, improved fuel efficiency, and enhanced safety characteristics. Fast reactors, in particular, are capable of utilizing a broader range of fuel materials and can potentially recycle existing nuclear materials more effectively than conventional reactor technologies.
Oklo’s participation in the DOE program therefore positions the company at the intersection of several strategic priorities, including clean energy deployment, fuel cycle innovation, nuclear waste reduction, and domestic energy security. If successful, the initiative could help demonstrate how advanced reactors can play a dual role by producing reliable electricity while also contributing to long-term nuclear material management solutions.
As the advanced nuclear sector continues to evolve, partnerships such as the one between Oklo and newcleo may become increasingly important in overcoming technical, regulatory, and financial challenges associated with next-generation reactor deployment. With federal agencies, private investors, and international technology developers all showing growing interest in advanced nuclear energy, the DOE’s surplus plutonium initiative could become a key catalyst for accelerating the commercialization of innovative reactor technologies in the coming years.
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