German Fusion Startup ProximaFusion Secures €411 Million in Funding

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A milestone has been reached in the field of European nuclear fusion. Munich-based fusion startup ProximaFusion has officially announced the completion of a massive €411 million funding round, valuing the company at €2.4 billion.

This deal not only makes ProximaFusion the best-funded nuclear fusion enterprise in Europe, but it has also successfully triggered a prior agreement with the Bavarian state government, securing an additional €400 million in public funding support.

1. A Powerful Alliance of Top-Tier Capital and Energy Giants

The composition of this funding round reflects a strong orientation toward high-tech and strategic synergy:

• Lead Investors: Co-led by XTX Ventures (the venture arm of quantitative trading giant XTX Markets) and East X Ventures.
• Strategic Investors: Global tech giant Google and RWE, one of Germany's largest power utilities, have strategically entered the cap table. Notably, RWE directly invested €25 million.
• Participating Investors: Prominent public and private institutions, including KfW Capital and the German Federal Agency for Disruptive Innovation (SPRIND).

2. The "Green Transition" of Traditional Nuclear Power Plants

Beyond financial backing, RWE's participation brings irreplaceable industrial resources to ProximaFusion. Under a previously established agreement between the two parties, RWE will provide the site of its decommissioned Gundremmingen nuclear power plant in Bavaria to collaborate with ProximaFusion on building Europe's first commercial stellarator fusion power plant.

• Industry Advantage: Reusing the decommissioned nuclear plant's existing grid interconnection systems and established regulatory compliance experience can significantly shorten construction timelines and reduce capital expenditures.

3. The Unique Competitiveness of the Stellarator Route

As a spin-off from the Max Planck Institute for Plasma Physics, ProximaFusion firmly pursues the stellarator technology route. Compared to the pulsed operation of tokamaks, stellarators utilize highly complex twisted magnetic cages and high-temperature superconducting (HTS) magnets to achieve long-term, continuous, and stable energy output.

The €411 million raised in this round will primarily be used to accelerate the in-house mass production of high-temperature superconducting cables and magnets, as well as to fully advance the construction of its net-energy demonstrator reactor, named Alpha. Scheduled for completion in the early 2030s near Munich, this demonstrator aims to become the first stellarator device in human history to achieve net energy output.