For decades, the United States has treated spent nuclear fuel as one of its most persistent environmental liabilities, with roughly 94,000 metric tons stored at power plant sites nationwide.
Some isotopes within that stored material carry a half-life of nearly 25,000 years, making long-term containment both a scientific and political challenge of enormous scale.
Oklo (NYSE: OKLO) is now making a bold argument that this liability is actually a vast, untapped energy resource waiting to be unlocked through fuel recycling technology.
The company contends that the energy recoverable from America’s stockpile of used nuclear fuel is equivalent to approximately 1.3 trillion barrels of oil, or five times the proven reserves of Saudi Arabia.
CEO Jacob DeWitte has made the case directly, stating, “By recycling used fuel at scale, we are turning waste into gigawatts, reducing costs, and establishing a secure U.S. supply chain that will support the deployment of clean, reliable, and affordable power.”
The United States currently operates what is known as a once-through nuclear fuel cycle, meaning uranium is mined, processed, used in reactors, and then stored indefinitely as waste without recovery.
Oklo’s proposed model would break from that approach by extracting usable material from spent fuel, significantly improving both efficiency and the environmental footprint of nuclear power generation.
DeWitte has also argued that Oklo’s recycling process could shorten the radioactive half-life of waste material from tens of thousands of years down to just a few hundred years, while also reducing the volume requiring permanent disposal.
The company’s Tennessee recycling facility forms a central part of a $1.68 billion advanced fuel center plan, with production of metal fuel for its Aurora powerhouses expected to begin in the early 2030s, pending regulatory review and approvals.
Oklo cleared a notable milestone in July 2026, when it successfully completed a pre-application readiness assessment for Phase 1 of the combined license application for its first commercial Aurora powerhouse.
That same month, Oklo received a Department of Energy start-up authorization for its Groves Isotope Test Reactor in Texas, adding further momentum to its regulatory progress.
In early August, the company achieved a controlled, self-sustaining nuclear chain reaction at low power, a scientific benchmark known as criticality, which represents a meaningful step toward demonstrating real-world deployment capabilities.
Despite these advances, Oklo does not yet operate a commercial nuclear power reactor, and its fuel recycling facility remains years away from completion, keeping this firmly in long-bet territory for investors.
The gap between Oklo’s vision and its current operational reality is significant, and the commercial, regulatory, and technical risks involved remain substantial for a company still building toward its first revenue-generating plant.
For investors weighing the opportunity, Oklo represents one of the more ambitious propositions in the clean energy sector, one that hinges on both technological execution and a sustained favorable regulatory environment in the years ahead.
