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Apr 14, 2026

Cooperation in the nuclear sector between Terra Innovatum and Mersen

Terra Innovatum and Mersen Achieve Graphite Prototype Manufacturing and Validation Milestone to support First Deployment of SOLO™ Micro-Reactor.

  • Milestone builds on prior agreement for nuclear-grade graphite and supports SOLO™ FOAK (First-of-a-Kind) deployment targeted for 2027 and NOAK (Nth-of-a-Kind) commercialization in 2028

  • Leveraging Mersen’s expertise in nuclear-grade materials, the companies successfully produced a graphite prototype (i.e. an engineering prototype) to support SOLO™ FOAK development

  • The graphite engineering prototype has been successfully manufactured to required tolerances, validating reactor system integration and readiness for scalable, serialized production

New York, NY / Paris, France / Globe Newswire / April 14th, 2026 / –  Terra Innovatum Global N.V. (NASDAQ: NKLR), developer of the SOLO™ Micro-Modular Reactor, and Mersen (Euronext FR0000039620 – MRN), a global expert in electrical power and advanced materials, today announced the successful production of a graphite reactor core prototype marking an important step in manufacturing readiness for its FOAK reactor deployment. 

The milestone highlights the companies’ collaboration in advancing next-generation nuclear technologies. It demonstrates also Terra Innovatum’s progress in converting supply chain preparation into manufacturing execution as it advances toward FOAK deployment and NOAK commercialization.

"This advance marks an important step in our transition from supply chain readiness to manufacturing execution,” said Alessandro Petruzzi, Co-Founder and Chief Executive Officer of Terra Innovatum. “The successful production of the graphite reactor core prototype, achieved with Mersen, demonstrates our ability to secure and process the nuclear-grade materials essential to SOLO™ FOAK deployment. Just as importantly, it reinforces the industrial foundation needed to scale from first deployment to repeatable NOAK manufacturing."

"The development of this graphite engineering prototype represents a meaningful technical milestone in the realization of the SOLO™ reactor core,” said Marco Cherubini, Co-Founder and Chief Technology Officer of Terra Innovatum. “These components are designed to host critical systems and core elements that influence thermal performance, and overall system reliability. This work also establishes the procedures and quality standards required for repeatable manufacturing and scalable deployment."

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