German Startup Unveils Open-Source Fusion Reactor Design

Proxima Fusion's Stellaris design, based on stellarator technology, aims to deliver stable, continuous fusion energy with a demonstrator plant planned by 2031.

• Proxima Fusion, a German startup, has published its Stellaris fusion reactor design in a peer-reviewed journal, marking a milestone in the pursuit of commercial fusion energy.
• The Stellaris design is a quasi-isodynamic stellarator that uses high-temperature superconducting magnets to achieve stability and continuous operation, overcoming challenges seen in tokamaks.
• Proxima's approach leverages AI supercomputers to optimize reactor designs, enabling faster development and reducing costs by using existing supply chain materials.
• The startup plans to construct a demonstrator plant, named Alpha, by 2031, aiming to show steady-state net energy production for the first time.
• Proxima Fusion, a spin-off from the Max Planck Institute, has raised significant funding from the European Union, German government, and venture capital to accelerate its work on fusion technology.

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