• Nuclea Energy plans to acquire Moltex Energy’s reactor and nuclear fuel recycling technologies through an all-cash transaction.
• The portfolio has received more than $69 million in private and public funding and includes 80 granted patents across nine patent families.
• The deal would expand Nuclea beyond microreactors into advanced modular reactors, grid-scale nuclear generation and used fuel recycling.

Nuclea Energy is moving to acquire the nuclear technology portfolio of Moltex Energy, adding advanced reactor designs and used fuel recycling technology to its growing nuclear platform.

The transaction covers Moltex’s WATSS fuel recycling process and its Stable Salt Reactor – Wasteburner, or SSR-W. The fast molten salt reactor is designed to operate using recycled nuclear fuel.

Moltex Energy Limited, the UK-based parent of MoltexFlex Limited and Moltex Energy Canada Inc., entered administration in March 2025. Nuclea said the proposed transaction is structured principally as an asset acquisition.

The purchase price has not been disclosed. Nuclea Energy Canada, a subsidiary of Nuclea, will fund the transaction entirely in cash.

More Than a Decade of Nuclear R&D

Moltex developed the technology portfolio over more than a decade. According to Nuclea, the work received more than $69 million in private and public-sector funding from Canada and the United States.

The acquisition also includes FLEX, a thermal-spectrum version of Moltex’s Stable Salt Reactor technology.

The intellectual property portfolio covers 80 granted patents across nine patent families. These span nuclear fuels, reactor systems, chemistry and materials. Another nine patent applications relate to the WATSS fuel recycling process.

The technology would broaden Nuclea’s existing development pipeline. The company is separately working on Morpheus, a compact and transportable microreactor.

Morpheus is designed to be factory fabricated, lead cooled and graphite moderated. It remains at the conceptual design stage.

Adding Moltex’s technologies would give Nuclea exposure to several nuclear markets. These include advanced modular reactors, potentially grid-scale generation and technology for recycling used nuclear fuel.

Fuel Recycling Technology Advances

The transaction follows progress on Moltex’s WATSS technology in Canada.

In June, Moltex Energy Canada said key stages of the process had been successfully validated using irradiated fuel from a commercial CANDU reactor. The work took place at Canadian Nuclear Laboratories’ Chalk River facilities.

The ability to recycle used nuclear fuel is becoming increasingly relevant as governments revisit nuclear power within energy security and decarbonization strategies. Technologies that can extract additional energy from existing fuel could also affect long-term waste management requirements.

Nuclea plans to retain Moltex Energy Canada following completion. The business would continue as a focused research, engineering and regulatory development entity for the acquired technologies.

The deal remains subject to closing conditions. These include approval under the UK’s National Security and Investment Act 2021.

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Nuclear Investment Push Expands

Nuclea sees the acquisition as part of a broader shift in investment toward nuclear power.

“We believe the nuclear sector is entering a sustained period of strategic investment driven by the increasing competition in nuclear developments between east and west, energy security, grid reliability, industrial electrification and growing demand for large volumes of dependable, low-carbon power driven by the new digital age,” said Josef Freundorfer, Nuclea’s chief executive officer.

He said the agreement would add two advanced reactor designs and nuclear fuel-cycle technology that complement Morpheus.

Rory O’Sullivan, Moltex’s chief executive officer, said the company had been “delighted” by the level of interest generated through the competitive process, calling it recognition of the value created by its team and shareholders over more than a decade.

Public Markets Could Support Expansion

Nuclea is also preparing for potential access to public capital.

The company recently entered a definitive business combination agreement with Mangoceuticals, Inc. The transaction remains subject to stockholder, regulatory and other customary approvals.

Nuclea said the combination would provide a route to a public listing. That could broaden access to capital for the development, licensing and commercialization of Morpheus and its expanding technology portfolio.

The company has also signed an agreement with Utah’s Office of Energy Development to explore siting a nuclear test reactor at the Utah San Rafael Energy Lab. A separate non-binding agreement with New Mining Co will examine potential modular reactor deployment for the company’s power requirements.

For energy executives and investors, the Moltex transaction reflects growing consolidation around technologies that can address several nuclear challenges at once. Reactor scalability, fuel efficiency, waste management and regulatory execution are all moving higher on the strategic agenda.

If completed, Nuclea’s acquisition would give the company a broader position across those areas while preserving Moltex’s Canadian development platform. Its commercial value will depend on whether the technologies can move successfully from research and validation into licensing and deployment.