Thorizon

What Thorizon does

Thorizon is a Franco-Dutch deep-tech company, founded in 2021 as a spin-off from NRG (the Netherlands' national nuclear research institute), developing small modular molten salt reactors (MSR) for baseload power and high-temperature industrial heat. The company's core product, Thorizon One, is a 100 MWe / 250 MW thermal unit operating at low pressure with a walk-away safe molten salt core and a patented cartridge-based fuel system designed for off-site series production, 5-10 year cartridge replacement cycles, and the ability to run on long-lived nuclear waste as fuel. The technology platform is being validated through a staged roadmap: the Thorizon PILOT non-nuclear test program (Eindhoven and Borssele, target 2027), the Thorizon PIONEER nuclear demonstrator at NRG PALLAS in Petten (construction target 2028, operational 2030), and a first commercial reactor (target 2034).

The company serves energy-intensive industries (chemicals, steel, hydrogen), data center operators, and national/regional governments seeking energy security and decarbonization, with site-hosting partnerships secured with EPZ at Borssele and NRG PALLAS at Petten. Thorizon is pre-revenue and is constructing its business model around licensing of its reactor technology, sale of commercial reactor units, and long-term fuel and service contracts, with EPC, manufacturing, and component engineering delivered through a deep partner network including Hyundai Engineering & Construction, Orano, VDL Groep, Demcon, Tractebel, EDF, Boccard, CEA, and Curium. As of early 2026, Thorizon has approximately 50 engineers across Amsterdam and Lyon, has raised approximately €42.5M in cumulative funding (mix of Series A equity led by Invest-NL plus non-dilutive grants from France 2030, the EU Just Transition Fund, and the Province of Noord-Brabant), and is one of eight priority projects within the EU Industrial Alliance on Small Modular Reactors.

Name

Thorizon

Legal name

Thorizon

Website

https://thorizon.com

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

11–50 employees

Short description

Thorizon is a Franco-Dutch developer of small modular molten salt reactors, founded in 2021 as a spin-off from NRG, designing 100 MWe / 250 MW thermal units that deliver baseload power and high-temperature industrial heat using a patented cartridge fuel system, serving energy-intensive industries, data centers, and government-backed energy projects.

Ownership category

akta.pro rank

Product category

Small Modular Nuclear Reactors

NAICS

Nuclear Electric Power Generation (221113)

SIC

Special Industry Machinery (No Metalworking Machinery) (3550)

akta.pro industry

PRIMARYEUAKADAC

Gen IV / Advanced Reactor Systems (SFR, LFR, GFR, MSR, HTGR, Microreactors)

Energy, Utilities & Environment/Nuclear Energy/Nuclear Reactor Technology & Components (SMRs, Gen III/IV, Instrumentation & Controls)

SECONDARYEUAKADAE

Reactor Vessel, Internals & Primary Circuit Components (RPV, piping, pumps, valves)

Energy, Utilities & Environment/Nuclear Energy/Nuclear Reactor Technology & Components (SMRs, Gen III/IV, Instrumentation & Controls)

SECONDARYEUAKACAG

Advanced & Non‑LWR Fuel Manufacturing (TRISO, metallic fuels, HALEU fuels)

Energy, Utilities & Environment/Nuclear Energy/Nuclear Fuel Cycle (Mining, Conversion, Enrichment & Fuel Fabrication)

Keywords

• Small modular reactors
• Molten salt reactors
• Nuclear technology
• Advanced nuclear energy
• High-temperature heat

Headquarters

HQ city

Amsterdam

HQ country

Netherlands

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Operations, Infrastructure, Marketing or Sales

Revenue model

1. Reactor Licensing and Deployment: Thorizon plans to generate revenue through licensing its reactor technology and deploying commercial Thorizon One reactors at customer sites. The company works with industrial partners for manufacturing, engineering, and construction, while positioning itself as the licensor and technology provider. Revenue will come from reactor sales, licensing fees, and ongoing fuel and service contracts.
2. Reactor Construction and Project Development: As a pre-revenue deep-tech company, Thorizon is currently focused on development and prototyping. Once commercial reactors are operational, revenue will include construction project fees and potentially managed services for reactor operation and maintenance.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Thorizon develops and deploys small modular molten salt reactors (MSRs) that deliver 100 MWe of carbon-free electricity and 250 MW of high-temperature industrial heat at 550 degrees Celsius. The company's technology uses patented fuel cartridges designed to operate on nuclear waste as fuel, providing intrinsically safe, low-pressure operation. Core offerings include the Thorizon One commercial reactor, the Thorizon PIONEER nuclear demonstrator, and the Thorizon PILOT non-nuclear test program.

Product overview

Thorizon offers a portfolio of small modular molten salt reactors at various stages of development. The core offering consists of Thorizon One, a 100 MWe commercial reactor delivering both electricity and high-temperature industrial heat at 550°C, designed to run on nuclear waste. The Thorizon PIONEER is a nuclear demonstrator (first nuclear MSR in Europe), and Thorizon PILOT is a non-nuclear test program validating the cartridge-based fuel system. All products share the patented cartridge modularity design and low-pressure molten salt technology platform.

Differentiator

Problem solved

Functional benefit

Products and services

• Thorizon One The first commercial small modular molten salt reactor, delivering 100 MWe of carbon-free electricity and 250 MW of industrial heat at 550 degrees Celsius. Uses patented fuel cartridges and operates at low pressure with intrinsically safe molten salt technology, designed to run on nuclear waste as fuel. Targets EUR 60/MWh levelized cost of energy.
• Thorizon PIONEER Nuclear demonstrator reactor - the first molten-salt nuclear reactor to operate in Europe, deployed at NRG PALLAS in Petten. Provides early operational data and regulatory confidence for the Thorizon platform.
• Thorizon PILOT Full-scale non-nuclear pilot program validating cartridge design, assembly, and step-by-step operation of the primary system. Located at High Tech Campus Eindhoven and at EPZ in Borssele.

Quantifiable outcome

• Avoids as much CO₂ as a city the size of Amsterdam per reactor
• +3 more outcomes

Named customers4 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

22 partnerships are on record, tiered core, strategic and secondary.

• EPZcoreStrategic or Co-development Partner · 16 April 2026EPZ, operator of Netherlands' only commercial nuclear power plant at Borssele, has completed pre-feasibility assessment validating site suitability and joined the coalition to investigate becoming owner, licensee and operator of Thorizon One commercial reactor in Zeeland. EPZ has operated the Borssele site for over 50 years.
• NRG PALLAScoreStrategic or Co-development Partner · 16 April 2026NRG PALLAS, leading Dutch nuclear research institute and medical isotope developer based in Petten, will provide the site for the PIONEER nuclear demonstrator and intends to become its owner, licensee and operator. Thorizon originated as spin-off from NRG.
• Hyundai Engineering & ConstructionstrategicStrategic or Co-development Partner · 9 March 2026Strategic MOU signed at Thorizon's Amsterdam headquarters to accelerate development and global deployment of the Thorizon One molten salt reactor. Partnership combines Thorizon's advanced MSR technology with Hyundai E&C's EPC expertise, part of Hyundai's 'Triangular Alliance' nuclear strategy covering large reactors, SMRs, and MSRs.
• BoccardstrategicImplementation/ SI/ Consulting Partner · 1 January 2026Strategic cooperation to engineer pump qualification loop and prepare pipework for Thorizon's Pioneer nuclear demonstrator. Boccard brings over 50 years of nuclear experience and pilot-plant capabilities for validation of high-temperature molten-salt pumping technology.
• OranocoreTechnology or IntegrationPartnership with Orano on fuel development. Orano is tasked by the French government under France 2030 strategy for advancing fuel cycle closure. Orano brings fuel cycle mastery and nuclear engineering depth to the Thorizon program.
• VDL GroepcoreImplementation/ SI/ Consulting PartnerVDL Groep partnered for prototyping and manufacturing. Part of PROMOSA project in Noord-Brabant. VDL brings high-tech manufacturing capability and is a key partner for cartridge and component manufacturing for series production.
• TractebelcoreImplementation/ SI/ Consulting PartnerEngineering partnership with Tractebel for reactor design and engineering services. Tractebel provides engineering expertise for design validation and licensing activities.
• EDFsecondaryTechnology or IntegrationR&D collaboration with EDF on research and development activities. EDF brings French nuclear engineering expertise to the partnership program.
• Schelde ExotechcoreImplementation/ SI/ Consulting PartnerZeeland-based manufacturer designing and manufacturing high-end process equipment including heat exchangers from exotic metal alloys. Part of Project ZILT consortium and PILOT program, bringing specific expertise in heat exchangers for nuclear applications.
• DelmecosecondaryImplementation/ SI/ Consulting PartnerZeeland-based manufacturer partnering in Project ZILT for design and testing of reactor components. Part of the regional manufacturing base supporting Thorizon's deployment.
• CuriumstrategicTechnology or IntegrationResearch collaboration on corrosion testing for metals in contact with molten salt. Curium brings expertise in characterisation and experimentations with chemicals and radioactive materials, with laboratory authorized by Nuclear Safety Authority.
• INSA LyonstrategicTechnology or IntegrationResearch collaboration with MatéiS laboratory affiliated with INSA Lyon, CNRS and Claude Bernard Lyon 1 University. Partnership focuses on materials development and corrosion testing, with access to specialized testing capabilities and dedicated research spaces in Auvergne-Rhône-Alpes region.
• DEMCONsecondaryImplementation/ SI/ Consulting PartnerPart of PROMOSA project in Noord-Brabant consortium with Thorizon and VDL Groep. Develops and manufactures technology and innovative products, contributing prototyping capabilities.
• TU DelftsecondaryTechnology or IntegrationPartner in the nuclear innovation ecosystem connecting around development, testing and deployment of next-generation reactor technology. Brings academic research expertise and nuclear knowledge.
• TNOsecondaryTechnology or IntegrationPartner in the nuclear innovation ecosystem. Brings applied research expertise and nuclear knowledge infrastructure for next-generation reactor development.
• HZ University of Applied SciencessecondaryTechnology or IntegrationPart of Project ZILT consortium. Contributing to applied research and education, building the next generation of nuclear talent in Zeeland.
• ScaldasecondaryTechnology or IntegrationPart of Project ZILT consortium. Regional knowledge institution contributing to applied research and education for nuclear workforce development.
• DIFFERsecondaryTechnology or IntegrationPartner in the nuclear innovation ecosystem connecting around development, testing and deployment of next-generation reactor technology.
• Provincie ZeelandcoreOthersCommitted to supporting permitting and licensing and actively engaging stakeholders in Zeeland. Hosting Europe’s first commercial molten salt reactor would position the region at forefront of next-generation nuclear energy.
• Provincie Noord-HollandcoreOthersCommitted to supporting permitting and licensing and actively engaging stakeholders in Noord-Holland. Energy & Health Campus in Petten is considered logical location for demonstration reactor development.
• Provincie Noord-BrabantcoreOthersProvince contributing €4M grant to PROMOSA project in consortium with VDL Groep and Demcon. Established Nuclear Innovation Coalition to strengthen collaboration between governments, companies and knowledge institutions for next generation nuclear energy.
• CEAstrategicTechnology or IntegrationFrench Alternative Energies and Atomic Energy Commission. Partnered on advanced materials and reactor chemistry. Tasked by French government under France 2030 for advancing fuel cycle closure, making Thorizon PIONEER directly relevant to French national nuclear policy.

Scale indicators14 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Terrestrial Energy: Canadian developer of the Integral Molten Salt Reactor (IMSR), a small modular MSR targeting industrial heat and power. Most direct competitor to Thorizon in the MSR category with similar customer focus and licensing path.
• Kairos Power: US developer of the fluoride salt-cooled high-temperature reactor (KP-FHR), another molten-salt-adjacent advanced reactor. Competes directly for advanced reactor licensing milestones, capital, and industrial heat customers.
• Copenhagen Atomics: Danish thorium-fueled MSR developer, a fellow European MSR startup using molten salt technology. Comparable scale, European base, and pre-commercial development stage.
• Moltex Energy: UK/Canada developer of the Stable Salt Reactor, another molten salt reactor concept targeting grid-scale power. Competes for the same advanced-reactor licensing pipeline and government support.

Emerging players

• Rolls-Royce SMR: UK-based SMR consortium developing a 470 MWe light-water SMR. Competes with Thorizon for European SMR deployment slots, government prioritization, and industrial customer demand, though with a different (LWR) technology.
• TerraPower: Bill Gates-backed advanced reactor developer (Natrium sodium fast reactor with molten salt energy storage). Major well-capitalized peer in the advanced reactor space targeting industrial decarbonization.
• X-energy: US developer of the Xe-100 high-temperature gas-cooled reactor and TRISO-X fuel. Competes for high-temperature industrial heat customers and is further along in US regulatory licensing.

Broad incumbents

• NuScale Power: US-based publicly listed SMR developer with NRC-certified light-water SMR design. Serves as a benchmark SMR competitor for European customers evaluating small modular nuclear options.
• Westinghouse eVinci: Westinghouse's microreactor program targeting remote and industrial customers with compact nuclear. Part of a large established nuclear vendor portfolio, competing for the same decentralised baseload use cases.
• Framatome: Major French nuclear reactor vendor and fuel cycle participant, partnered with or adjacent to many of Thorizon's industrial ecosystem partners (EDF, CEA, Orano). Represents the incumbent supply chain Thorizon must integrate with for licensing and deployment.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/watch?v=pM5kLoZ-TF4
• LinkedInlinkedin.com/company/thorizon

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds5 records

Investors9 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Thorizon