PROXIMA FUSION: SHAPING THE FUTURE OF FUSION ENERGY

Designing the first fusion power plants using stellarator technology and AI-based simulations.

“Proxima’s partnership with PSI is advancing HTS magnet technology, with powerful engineering implications,” said Co-Founder and Head of Engineering Martin Kubie. “We look forward to strengthening our collaboration to accelerate the path to commercial fusion power plants, working alongside some of the world’s best engineers developing particle accelerators

Martin Kubie

Co-Founder and Head of Engineering

Proxima Fusion, headquartered in Munich with a team based at Switzerland Innovation Park Innovaare, is the first spin-off from the Max Planck Institute for Plasma Physics and a pioneer in bringing stellarator-based fusion power to commercial reality. Fusion, often described as the “holy grail” of clean energy, has long been held back by engineering complexity and stability challenges. Proxima Fusion aims to overcome these hurdles with a new class of reactors: quasi-isodynamic (QI) stellarators.

Unlike conventional tokamaks, QI stellarators offer continuous operation without the need for pulsed magnetic fields. However, their design demands intricate three-dimensional magnetic geometries, previously too complex to engineer reliably. Proxima Fusion’s innovation lies in leveraging cutting-edge computational tools, including AI-driven simulations and digital twins, to optimize reactor configurations in silico before moving to hardware.

In 2024, the company signed a strategic framework agreement with the Paul Scherrer Institute (PSI) to co-develop high-temperature superconducting (HTS) magnets, a key enabler for compact and efficient fusion devices. This new long-term collaboration began with several members of the Proxima Fusion team opening an office at Switzerland Innovation Park Innovaare in Villigen, where they could work closely with PSI  scientists and engineers. Their flagship project, Stellaris, is the world’s first peer-reviewed fusion power plant concept designed for continuous operation with a clear engineering roadmap.

By combining physics-based models with simulation-driven engineering and a rapid prototyping cycle, Proxima sets a new standard for how fusion can move from lab to grid. With long-term ambitions to put the first stellarator fusion power plant on the grid in the 2030s, Proxima Fusion exemplifies how scientific breakthroughs can be industrialized through smart engineering and partnerships.

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    Employees

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    raised Series A to build world’s first stellarator-based fusion power plant in the 2030s

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