Proxima Fusion is a prominent German energy technology company focused on the development of commercial fusion power plants. Headquartered in Munich, it was established in April 2023 as the first-ever spin-off from the Max Planck Institute for Plasma Physics (IPP). The company?s core objective is to industrialize the "stellarator" concept?a magnetic confinement fusion device?leveraging decades of public research to provide a carbon-free, safe, and limitless source of baseload power.
As of 2026, Proxima Fusion is recognized as Europe?s leading contender in the global fusion race, having secured over ?200 million in private and public funding, including a record-breaking ?130 million Series A round in June 2025.
While most fusion ventures focus on the "tokamak" design (a donut-shaped reactor), Proxima Fusion specializes in the stellarator. Historically, stellarators were considered too complex to engineer, but Proxima leverages recent breakthroughs in computational power and superconductivity to overcome these hurdles.
Key Technological Pillars
Quasi-Isodynamic (QI) Optimization: Proxima designs magnetic fields where the particle orbits are "closed," preventing the energy leakage that plagued earlier designs. This allows for inherently stable, steady-state operation without the risk of "disruptions" (sudden plasma losses) common in tokamaks.
High-Temperature Superconductors (HTS): The company utilizes next-generation HTS magnets capable of generating magnetic fields up to 20 Tesla. These powerful fields allow for a significantly more compact and cost-effective reactor design.
Simulation-First Engineering: By using digital twins and AI-driven optimization, the company iterates designs in a virtual environment before moving to hardware, significantly accelerating the R&D cycle.
Products and Major Concepts
Proxima Fusion does not sell consumer products; rather, it develops complex intellectual property, hardware components, and integrated power plant designs intended for the global energy grid.
1. Stellaris: The Commercial Power Plant Concept
Announced in early 2025, Stellaris is the world?s first peer-reviewed concept for a commercial stellarator power plant.
* Continuous Operation: Unlike pulsed reactors, Stellaris is designed to run 24/7, making it ideal for baseload electricity generation.
* Tritium Breeding: The design includes an integrated "breeder blanket" to produce its own tritium fuel, ensuring a self-sustaining fuel cycle.
* Modular Architecture: Designed for manufacturability, allowing components to be produced in factories and assembled on-site to reduce construction costs.
2. Alpha: The Net-Energy Demonstrator
Currently in the advanced design phase, Alpha is a smaller-scale demonstrator device intended to prove net energy gain ($Q > 1$).
* Target Operation: Scheduled to begin operations in 2031.
* Purpose: To serve as the final validation of the QI-HTS architecture before the deployment of the full-scale Stellaris plants.
3. HTS Magnet Technology (SMC)
Proxima develops high-field superconducting magnets in partnership with institutions like the Paul Scherrer Institute (PSI).
* Stellarator Model Coil (SMC): A major hardware demonstration project set for completion in 2027. This specialized coil will prove that HTS materials can be wound into the complex 3D shapes required for stellarators while maintaining high-field performance.
Roadmap and Milestones
Proxima Fusion follows an aggressive, hardware-led roadmap to bring fusion energy to the grid by the mid-2030s:
| Year | Milestone |
| :--- | :--- |
| 2023 | Official spin-out from the Max Planck Institute (IPP). |
| 2025 | Publication of the Stellaris peer-reviewed power plant concept. |
| 2026 | Site selection for the Alpha demonstrator in Europe. |
| 2027 | Completion and testing of the Stellarator Model Coil (SMC). |
| 2031 | First plasma and net-energy demonstration at the Alpha facility. |
| 2035+ | Connection of the first Stellaris fusion power plant to the European grid. |
Strategic Partnerships
The company operates through a "fusion ecosystem" model, collaborating with leading industrial and academic partners:
* Max Planck Institute (IPP): Direct access to the intellectual legacy and data from the Wendelstein 7-X (W7-X) experiment.
* Dassault Syst?mes: Utilizing the 3DEXPERIENCE platform for high-fidelity virtual twinning and manufacturing planning.
* Hugging Face: Collaborative efforts in AI and machine learning to optimize magnetic field configurations.
Leadership Team
The company was founded by a multi-disciplinary team with backgrounds from IPP, MIT, Google X, and McLaren Racing:
* Dr. Francesco Sciortino (CEO): Former IPP researcher and MIT alumnus.
* Dr. Jorrit Lion (Chief Scientist): Expert in stellarator optimization.
* Martin Kubie (Head of Engineering): Former lead engineer at Google X and McLaren.
Please note: This information is generated by AI. For legal use, verify with company sources.
