Google backs nuclear fusion startup targeting Europe’s first commercial power plant

In a significant development for the energy sector, Google has announced its investment in Proxima Fusion, a German startup poised to construct Europe's first commercial nuclear fusion power plant. The funding round, totaling €411 million (approximately $468 million), was made public on Tuesday. Nuclear fusion, the process of merging hydrogen atoms to create helium, yields vast amounts of energy. Despite its potential for providing a sustainable, carbon-free energy source, the technology has yet to find a commercial application, largely due to unresolved technical challenges. Currently, all operational nuclear power plants utilize fission, which involves atom splitting. This investment reflects Google’s ongoing commitment to fusion energy as a viable long-term solution. Proxima Fusion, which recently achieved a valuation of $2.7 billion, is spearheading this venture with the support of strategic investors including RWE, XTX Ventures, and East X Ventures. Other notable venture firms such as Plural, UVC Partners, Balderton, and Cherry Ventures also joined the funding round. As cofounder and CEO Francesco Sciortino remarked, "Europe is in a race with the United States and China to establish the first fusion power plant. Our financing illustrates that Europe is capable of not only innovating breakthrough technologies but also developing competitive companies that can thrive on a global scale." The startup is focused on developing stellarator technology, one of the several methods for achieving nuclear fusion. Proxima aims to have its fusion demonstrator operational by the early 2030s, with plans for the commercial plant to follow later in the decade. The newly acquired funds will enable Proxima to enhance its production of high-temperature superconducting (HTS) cables and magnets, as well as refine the engineering and manufacturing systems essential for stellarator technology. The company also plans to expand its workforce across engineering, manufacturing, and operations to expedite progress. Although Proxima stands as the most well-funded fusion startup in Europe, its U.S. counterparts have attracted even larger investments. For instance, Commonwealth Fusion Systems recently secured $863 million, bringing its total funding to $2.9 billion. Meanwhile, Helion Energy, backed by Sam Altman, raised $465 million last month, totaling $1.5 billion in funding. Google, which is also an investor in Commonwealth Fusion Systems, has signed an offtake agreement with the company set to commence once its first commercial plant becomes operational in June 2025. In a blog post, Google emphasized the transformative potential of fusion energy, describing it as clean, abundant, and inherently safe, with the capacity to be deployed nearly anywhere. However, they also acknowledged the significant challenges remaining in the commercialization of fusion technology, stating that while it could revolutionize the energy landscape, achieving success is far from guaranteed.