Proxima Fusion
Updated: July 08, 2026
The team
Country: Germany | Funding: €607.5M (+)
Founded: 2023
Website: https://www.proximafusion.com/
Proxima Fusion is a spinout from the Max Planck Institute for Plasma Physics that is building a quasi-isodynamic (QI) stellarator - fusion reactor that uses magnets to hold superheated gas in place so atoms can fuse and release energy. In this approach to magnetic confinement toroidal currents are canceled to zero, resulting in uniquely robust characteristics. In the absence of toroidal plasma currents, current instabilities and the risk of failures that can occur in tokamaks and other stellarator concepts can be completely eliminated. The company has also developed a new heat removal technology and has already tested an island divertor at facilities at the Institute.
Founded: 2023
Website: https://www.proximafusion.com/
Proxima Fusion is a spinout from the Max Planck Institute for Plasma Physics that is building a quasi-isodynamic (QI) stellarator - fusion reactor that uses magnets to hold superheated gas in place so atoms can fuse and release energy. In this approach to magnetic confinement toroidal currents are canceled to zero, resulting in uniquely robust characteristics. In the absence of toroidal plasma currents, current instabilities and the risk of failures that can occur in tokamaks and other stellarator concepts can be completely eliminated. The company has also developed a new heat removal technology and has already tested an island divertor at facilities at the Institute.
