Transmutex
- Company typePrivate
- Founded2020
- HeadquartersVernier, Switzerland
- Headcount11–50
- GTM typeB2B
- OfferingServices
Transmutex firmographics
Firmographics- Name
- Transmutex
- Legal name
- Transmutex SA
- Website
- https://transmutex.com
- Company type
- Private
- Founded year
- 2020
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Ownership category
- akta.pro rank
Transmutex industry classification
Industry- Product category
- Nuclear Reactor Engineering and Design
- NAICS
- Nuclear Electric Power Generation (221113)
- SIC
- Hazardous Waste Management (4955)
- akta.pro primary industry
- Reprocessing Plant Technology, Equipment & Remote Handling (EUAKAHAH)
- akta.pro secondary industries
- Fuel Cycle Support Services (Engineering, licensing support, conversion/enrichment contracting) (EUAKACAL), Nuclear Fuel Cycle for Power Generation (Uranium, Conversion, Enrichment, Fuel Fabrication) (EUACADAK)
Keywords
Where Transmutex is headquartered
LocationHeadquarters
- HQ city
- Vernier
- HQ country
- Switzerland
- HQ region
- Europe
Offices3 records
Markets served
Transmutex business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Technology or R&D, Operations
Revenue model
- Technology licensing and design services: Transmutex provides designs and software for accelerator-powered transmutation technology to national power plant operators. The company offers full support from procurement to maintenance. Revenue is generated through licensing their technology, engineering services, and potentially hardware specifications.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels5 records
Transmutex product offering
Product offeringCore offering
Transmutex develops accelerator-driven subcritical reactor technology, specifically the START (Subcritical Transmuting Accelerated Regenerative Technology) system, designed to transmute long-lived nuclear waste into shorter-lived isotopes while generating usable energy. The company sells reactor designs, associated simulation and control software, and engineering services to national power plant operators, utilities, and government nuclear programs.
Product overview
Transmutex is an engineering company producing designs and software for accelerator-powered technology. The primary product is the START (Subcritical Transmuting Accelerated Regenerative Technology) system, an advanced transmutation plant that combines a cyclotron particle accelerator with a subcritical nuclear reactor to transmute long-lived nuclear waste into cleaner, short-lived forms while generating carbon-free energy and producing medical/industrial radioisotopes. The company provides design expertise and simulation software to national power plant operators rather than building/owning/operating facilities themselves.
Differentiator
Problem solved
Functional benefit
Products and services
- START Reactor System Accelerator-driven subcritical reactor system designed to transmute long-lived nuclear waste into shorter-lived isotopes while producing energy; targeted at national power plant operators, utilities, and government nuclear programs seeking waste-management and clean-energy solutions.
- Reactor Design and Engineering Services Custom engineering and consulting services for designing, integrating, and deploying accelerator-driven subcritical reactor systems for nuclear waste transmutation and energy production.
- Reactor Simulation and Control Software Proprietary software suite for modeling, simulating, and operating the START reactor system, including neutronics calculations, thermal-hydraulic modeling, and transmutation performance analytics; used by nuclear engineering teams and research institutions.
Quantifiable outcome
- Radiation duration reduced from 1 million years to approximately 300-500 years
- +3 more outcomes
Companies that use Transmutex
Customer profileSegments2 records
Ideal customer profiles2 records
Transmutex technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Transmutex partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core and supporting.
- PSI (Paul Scherrer Institute)corePartnership with PSI for nuclear safety and technology expertise. PSI provides the cyclotron technology inspiration for Transmutex's accelerator design. The company conducts work at PSI Hotlab for accelerator-driven system development. PSI has been operating a high-power 600MeV cyclotron since the early 1990s, with current performance close to START's targets.
- CERNcoreCollaboration partner in the development of transmutation technology. The foundational theory was formulated by Carlo Rubbia and team at CERN in the 1990s. The TARC experiment at CERN demonstrated feasibility of using accelerators for transmutation. GEANT4 simulation software was developed at CERN.
- ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development)supportingCollaborating institution in the development of accelerator-driven nuclear technology.
- EPFL (École Polytechnique Fédérale de Lausanne)supportingAcademic partner developing deterministic code for sub-critical systems in collaboration with Transmutex.
- CNRS (Centre National de la Recherche Scientifique)supportingFrench national research institute collaborating on nuclear technology development.
- AnsyssupportingEngineering simulation software partner providing simulation capabilities for system design.
Scale indicators3 records
Recent moves7 records
Expansion highlights7 records
Transmutex competitors and assessment
Company assessmentDirect peers
- TerraPower: Bill Gates-backed advanced nuclear reactor developer (Natrium, traveling wave reactor). Most direct competitor pursuing next-generation nuclear technology with deep capital and a similar long-term commercialization horizon. Both target advanced reactor designs with novel fuel and safety architectures.
- Newcleo: European advanced nuclear startup developing lead-cooled fast reactors (LFRs) using MOX fuel, including a closed fuel cycle for waste minimization. Directly comparable as a European-headquartered advanced reactor company targeting waste reduction and clean energy.
- Seaborg Technologies: Danish advanced nuclear startup developing compact molten salt reactors (CMSR) on a power barge. Similar European advanced reactor startup at comparable stage, pursuing novel fuel cycles and clean energy with floating deployment.
- Moltex Energy: UK/Canada-based developer of stable salt reactors (SSR-W) and waste-burning molten salt reactors. Highly comparable as a startup pursuing novel reactor designs that can consume existing nuclear waste stockpiles.
- Copenhagen Atomics: Danish thorium molten salt reactor developer. Directly comparable given Transmutex's thorium fuel cycle focus and both pursue novel reactor designs with thorium-based fuel.
- X-energy: US developer of small modular reactors (Xe-100 high-temperature gas-cooled reactor) and TRISO-X fuel. Comparable as advanced reactor developer pursuing novel fuel and modular designs targeting waste reduction and clean energy.
- Oklo: US-based advanced reactor developer pursuing Aurora microreactors with liquid metal cooling. Comparable as a venture-backed advanced nuclear startup at similar stage with novel reactor designs targeting clean energy.
Emerging players
- Curio: US-based nuclear technology company focused on recycling spent nuclear fuel using advanced separation processes. Comparable on the nuclear waste management/transmutation axis, though focused on recycling rather than accelerator-driven transmutation.
Broad incumbents
- Framatome: Major established nuclear reactor vendor and fuel cycle services provider (French, with Areva heritage). Comparable as a broad nuclear technology incumbent with established regulatory relationships and licensing infrastructure that any advanced reactor startup must navigate.
- Westinghouse Electric Company: One of the world's largest established nuclear reactor vendors and nuclear fuel cycle services providers. Comparable as a broad nuclear industry incumbent providing reference point for licensing, fuel cycle, and regulatory pathways.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Transmutex social profiles
Digital presenceTransmutex financial estimates
Financial estimateRevenue estimate
Valuation estimate
Transmutex leadership team
Management profileNumber of profiles
Profiles6 records
Transmutex funding detail
Funding detailFunding overview
Funding rounds6 records
Investors13 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Transmutex M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Transmutex
What does Transmutex do?
Transmutex develops accelerator-driven subcritical reactor technology, specifically the START (Subcritical Transmuting Accelerated Regenerative Technology) system, designed to transmute long-lived nuclear waste into shorter-lived isotopes while generating usable energy. The company sells reactor designs, associated simulation and control software, and engineering services to national power plant operators, utilities, and government nuclear programs.
Is Transmutex a public or private company?
Transmutex is a private company. It is classified as venture growth investor backed and is currently operating.
When was Transmutex founded?
Transmutex was founded in 2020. It employs 11 to 50 people.
Where is Transmutex based?
Transmutex is headquartered in Vernier, Switzerland, in the Europe region.
How does Transmutex make money?
One revenue line is on record: technology licensing and design services.
Who are Transmutex's main competitors?
Direct peers on record are TerraPower, Newcleo, Seaborg Technologies, Moltex Energy, Copenhagen Atomics, X-energy and Oklo. Curio is listed as an emerging player. Broad incumbents are Framatome and Westinghouse Electric Company.
Does Transmutex have an API?
No public API is recorded for Transmutex.
What industry is Transmutex in?
Transmutex's product category is Nuclear Reactor Engineering and Design. Its primary akta.pro industry code is EUAKAHAH, Reprocessing Plant Technology, Equipment & Remote Handling, with a secondary code of EUAKACAL, Fuel Cycle Support Services (Engineering, licensing support, conversion/enrichment contracting). Its NAICS code is 221113 and its SIC code is 4955.