Curio Lands $2.5M ARPA-E Award to Scale NuCycle

Curio has secured $2.5M in additional cost-shared funding from the U.S. Department of Energy's Advanced Research Projects Agency-Energy to advance its NuCycle used nuclear fuel recycling process. Curio says it will add approximately $1M of company investment, creating a roughly $3.5M work package focused on lab validation, engineering, and regulatory preparation. The award was announced on August 13, 2026.

The new funding extends an existing ARPA-E project rather than opening a new venture round. It moves NuCycle into another difficult stage: testing selected process operations with actual used nuclear fuel and transuranics, then translating the results into preliminary designs for pilot-scale equipment. The broader question is whether nuclear recycling can move from technically interesting laboratory work to a system that is economical, licensable, secure, and repeatable.

What Happened

Curio's $2.5M award announcement describes two central technical workstreams. Pacific Northwest National Laboratory will conduct fluorination experiments intended to separate uranium from other radioactive materials and produce uranium hexafluoride for potential reuse in the fuel cycle. Savannah River National Laboratory will build and test electrowinning equipment intended to recover transuranic elements from molten salt as a solid metal mixture.

The program also reaches beyond laboratory chemistry. Curio plans to develop a regulatory engagement plan, prepare white papers on key licensing questions, analyze potential exemptions, and create conceptual design reports with process-flow diagrams, equipment specifications, and cost estimates. Those tasks are less cinematic than splitting atoms, but they are the work that decides whether a technology can leave the laboratory without collapsing under its own complexity.

The DOE's February 2026 environmental record independently confirms that the existing project received additional funding, a longer performance period, new milestones, and a new team participant. The public document does not state the added amount, so the $2.5M figure comes from Curio's announcement. That distinction matters because primary government confirmation and company disclosure support different pieces of the story.

How NuCycle Reached This Stage

ARPA-E initially awarded Curio $5M in 2023 through its CURIE program, short for Converting Used Nuclear Fuel Radioisotopes Into Energy. The original ARPA-E project focused on advanced head-end processing and fluorination steps intended to reduce technical risk in NuCycle. The agency describes the process as modular, integrated, compact, and designed to avoid producing a pure plutonium stream.

Curio later reported that laboratory demonstrations involving Idaho, Oak Ridge, Pacific Northwest, and Sandia national laboratories met key go/no-go milestones. Independent reporting from Axios documented the national-laboratory work and Curio's push toward scale-up. The new award narrows the next test to selected unit operations and the design package needed for a prototype and demonstration system.

Founded in 2021 and headquartered in Washington, DC, Curio is led by CEO Ed McGinnis, Founder and Chairman Rabbi Yechezkel Moskowitz, Founder and COO Yehudah Moskowitz, and Chief Innovation Officer Vik Singh. Curio's stated goal is a scaled prototype laboratory and demonstration plant capable of processing up to 4,000 metric tons of used nuclear fuel by the end of 2027. That is a company target, not current operating capacity.

Why This Matters

Used nuclear fuel is usually discussed as a storage burden, but it also contains uranium, transuranic elements, and other isotopes that may retain energy or commercial value. The DOE says commercial reactors extract less than 5% of the potential energy in nuclear fuel after five years of operation. Effective recycling could reduce demand for newly mined uranium and shrink the volume of high-level waste requiring disposal, although results depend on the process and economics.

That creates a strategic argument for technologies such as NuCycle. A domestic recycling system could potentially support advanced reactor fuel supply, recover material already sitting in the United States, and reduce some dependence on foreign enrichment and fuel-cycle capacity. It could also recover isotopes useful in medicine, industry, or national security, but those opportunities remain downstream possibilities rather than proven NuCycle revenue streams.

The award also shows how federal R&D funding can de-risk hard technology without pretending that a laboratory milestone is a commercial business. ARPA-E is paying for evidence: process performance, safeguards, engineering data, regulatory planning, and credible cost estimates. Curio still has to show that the pieces work together at scale and that the resulting system can compete with storage, disposal, and fresh-fuel alternatives.

The Risk Does Not Disappear

Nuclear reprocessing carries a long history of difficult economics, complex facilities, and proliferation concerns. Former Nuclear Regulatory Commission chair Allison Macfarlane told Axios that no reprocessing approach can be made completely proliferation-proof and argued that reprocessing would be extremely expensive. Curio's design objective is to improve that equation by avoiding a pure plutonium stream, embedding safeguards, reducing equipment footprint, and recovering more useful material.

Those claims now face the right kind of pressure. Testing with actual used fuel and transuranics is more meaningful than proving isolated chemistry with simplified inputs, while preliminary engineering can expose where cost and complexity accumulate. Regulatory engagement can also identify whether the planned process fits existing rules or requires a new pathway.

ARPA-E support is not proof that NuCycle will work commercially. It is proof that the federal government considers the questions important enough to fund another round of disciplined experimentation. For operators and investors watching advanced nuclear, the signal is not that the waste problem has been solved; it is that Curio has earned a more demanding opportunity to prove its answer.

What Comes Next

The next milestones should be judged on evidence rather than rhetoric. Curio needs reproducible results from PNNL and SRNL, a coherent design package, realistic cost estimates, and a regulatory plan that accounts for nuclear material safeguards and facility licensing. Progress on any one of those fronts will not substitute for weakness in the others.

If Curio can connect chemistry, equipment, safeguards, licensing, and economics, NuCycle could offer a new way to treat used nuclear fuel as an inventory of recoverable resources instead of a permanent dead end. If it cannot, the new award should still produce valuable data about where the process breaks. That is the honest purpose of high-risk energy R&D, and it is why this $2.5M matters more as a test than as a trophy.