Next generation nuclear
A clean, reliable energy system requires stable, carbon-free sources alongside wind and solar. Nuclear energy provides the backbone that makes such a system work. Thorizon is developing a small modular reactor based on molten salt, the most complete nuclear technology available. By combining this with modular design, we unlock a new generation of nuclear energy that delivers affordable, clean energy at scale.
The power of molten salt
Molten salt enables a unique combination of efficient fuel use, inherent safety, and the delivery of both electricity and high temperature industrial heat. It allows significantly more energy to be extracted from nuclear fuel, including from nuclear waste, while operating at low pressure for enhanced safety. This makes molten salt reactors well suited for deployment close to industry and data centers. Built on more than 75 years of research and operational experience, the technology is proven. Thorizon’s innovation lies in turning this foundation into a commercially deployable system.
Modularity by design
Thorizon’s patented fuel cartridges divide the reactor core into smaller, standardized modules. This enables off‑site series production and true modular scalability. The cartridges are easy to manufacture, transport, and handle, making reactors faster to build and more flexible to deploy. Because cartridges are replaced every 5–10 years, Thorizon can rely on materials already qualified and proven in existing reactors. By avoiding unnecessary materials innovation, Thorizon reduces development risk and accelerates time to market.
Roadmap
Grounded in realism
Thorizon follows a step-by-step path to commercialization, building on proven technology, existing licenses, and progressively increasing system integration. Each phase is designed to reduce risk, validate performance, and accelerate time to market.
Prototyping
Components
We develop and test key components, containment concepts, and subsystems in dedicated laboratory environments. This phase validates critical functions and materials under representative conditions. This work is carried out in Thorizon’s laboratories in Amsterdam and Eindhoven.
Pilot
Full‑scale non‑nuclear
A full‑scale, non‑nuclear pilot validates cartridge design, assembly, and step‑by‑step operation of the primary system. This enables system‑level testing while minimizing licensing and schedule risk. The Pilot program is located at the High Tech Campus in Eindhoven and at EPZ in Borssele, close to high tech manufacturing industry and to the Dutch nuclear ecosystem.
Pioneer
Nuclear demonstrator
The first molten‑salt nuclear reactor demonstrates integrated nuclear operation at research scale. Built within an existing licensed reactor environment, it provides early operational data and regulatory confidence. The Pioneer reactor is deployed at NRG PALLAS in Petten, allowing the fastest possible time to realization on a site with an existing nuclear research license.
Thorizon One
First commercial plant
The first full‑scale power plant delivers 100MW electricity to the end-user. Leveraging an existing nuclear site enables a faster and more predictable path to commercial operation. Thorizon One is built at EPZ in Borssele, a uniquely secured licensed nuclear site with grid access and operating experience.
Our Story
Unlocking the full potential of nuclear
We are building clean, reliable energy without compromises. Each Thorizon reactor avoids as much COâ‚‚ as a city the size of Amsterdam. We unlock the full potential of nuclear energy by overcoming the barriers of cost, safety, and waste that have held it back. Construction starts in the early 2030s.