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Proxima Fusion Secures €130 Million Series A to Advance Stellarator Fusion

The funding will drive Proxima Fusion’s plan to complete a hardware demonstration coil in 2027 before pursuing net energy gain in its Alpha stellarator by 2031.

2025-03-11 - Photo from Proxima Fusion’s Munich lab opening event, featuring remarks by Proxima CEO Francesco Sciortino - image credits Fabian Vogl for Proxima Fusion
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Overview

  • Proxima Fusion raised €130 million ($148 million) in a Series A round led by Balderton Capital and Cherry Ventures.
  • Total investment in the Munich-based startup now exceeds €185 million in public and private capital.
  • The company’s stellarator design aims to offer more stable plasma confinement than tokamaks by eliminating plasma current.
  • Proxima plans to finish its Stellarator Model Coil demonstration by 2027 as a precursor to its larger Alpha device.
  • The Alpha stellarator is scheduled to begin operations in 2031 with a goal of achieving net energy gain.