--- title: "The First Listed \"Nuclear Fusion\" Company: Amazon Founder Jeff Bezos-Backed General Fusion" type: "News" locale: "en" url: "https://longbridge.com/en/news/292400317.md" description: "General Fusion has completed its SPAC merger, achieving a valuation of $724 million and raising up to $338 million. It is set to list on Nasdaq next Monday, becoming the first publicly traded commercial nuclear fusion enterprise. Backed by Jeff Bezos, the company employs a unique technology route using liquid metal pistons to compress plasma. However, recent papers indicate that ion temperatures have not met commercialization standards, drawing skepticism from industry experts. Many outsiders believe its listing is partly due to hurdles in private fundraising" datetime: "2026-07-12T10:51:23.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/292400317.md) - [en](https://longbridge.com/en/news/292400317.md) - [zh-HK](https://longbridge.com/zh-HK/news/292400317.md) --- # The First Listed "Nuclear Fusion" Company: Amazon Founder Jeff Bezos-Backed General Fusion The nuclear fusion sector is witnessing a historic moment. This Friday, General Fusion completed its SPAC merger with Spring Valley Acquisition Corp III, **valuing the company at $724 million, with a maximum fundraising scale of $338 million, and officially listing on Nasdaq next Monday.** This Canadian company has received support from Amazon founder Jeff Bezos, who has participated in multiple funding rounds for the company over the past 15 years. CEO Greg Twinney stated in an interview with the Financial Times that **companies entering the public market first are often able to "dominate the narrative," defining investor expectations for commercial nuclear fusion companies.** **He also pointed out that, as there are currently no publicly listed competitors in the same category, the company will be able to access a "larger scale" investor base. "There is only one, and that is us."** However, just before the listing, **a recent scientific paper published by the company has triggered a new round of skepticism regarding whether its technology route can advance commercialization. Several market participants have also questioned the company's motivation for choosing to go public at this time rather than continuing to seek private financing.** ## A Unique "Steampunk" Technology Route Unlike most nuclear fusion startups that adopt tokamak designs, General Fusion has chosen a distinctly different technological path. **Tokamak nuclear fusion is a toroidal device that achieves controlled nuclear fusion through magnetic confinement.** Its main structure includes superconducting toroidal field coils, poloidal field coils, and a double-layer vacuum chamber, **confining high-temperature plasma via helical magnetic fields to achieve fusion reactions.** In contrast, General Fusion utilizes **mechanical pistons to drive the rapid contraction of a liquid metal cavity, compressing magnetized plasma.** Dan Brunner, a consultant at Future Tech Partners and former CTO of Commonwealth Fusion Systems, described this method as "steampunk," believing that compared to the more mature tokamak approach, this route carries greater uncertainty. General Fusion is currently testing its Lawson Machine 26 prototype in Vancouver to verify its economic feasibility and plans to build an operational commercial nuclear fusion power plant by the mid-2030s. ## Technical Progress Questioned by Authorities Brunner gave a severe assessment of the company's latest scientific results. **He stated that General Fusion's latest results are "far from" the targets required to build a commercially viable device, and bluntly remarked that the company's commercialization timeline is "unconvincing."** Specifically, Brunner pointed out that the paper showed **the company's plasma compression failed to raise ion temperatures to sufficient levels, meaning energy is still being lost through thermal leakage, which is one of the core challenges in achieving commercial nuclear fusion power generation.** In response, Tony Donné, Chairman of General Fusion's Technical Advisory Committee and former CEO of the European Fusion Research Consortium (EUROfusion), offered a different perspective. He believes that low ion temperatures are not an inherent flaw in the prototype's design but rather the result of the paper being published prematurely. He argued that the company faced "pressure" to disclose progress prior to its listing, leading to the early release of these results. Donné stated that the temperature issue is under "investigation," and subsequent test results are expected to improve. General Fusion expressed continued confidence in its development trajectory. ## Intensifying Competition in the Fusion Sector General Fusion's listing has not been without smooth sailing. In 2025, General Fusion announced layoffs affecting a quarter of its workforce due to a shortage of funds, although CEO Greg Twinney stated that most employees had been rehired after new investment came through. **Several investors, executives, and market observers have questioned whether General Fusion's choice to go public was partly driven by increasing difficulties in accessing private financing channels.** In response, Twinney argued that the company intentionally avoided "raising billions of dollars to build large-scale scientific facilities," opting instead for a more capital-efficient path to commercialization. He emphasized: > Scientific milestones are merely steps in the process, not the ultimate goal. **General Fusion's listing reflects the intensifying funding race across the entire nuclear fusion industry.** Over the past five years, the number of private nuclear fusion companies has more than doubled, with competition heating up as firms vie for funding for increasingly expensive experimental facilities. Nuclear fusion technology aims to simulate the reactions inside the sun, releasing energy by fusing atomic nuclei together in ultra-high-temperature plasma. Distinct from fission-based nuclear power, it is regarded by the industry as the "holy grail" of low-carbon, nearly infinite energy. However, private nuclear fusion companies have yet to prove that their systems can produce more energy than is required to sustain the plasma, and the old joke that "nuclear fusion is always 20 years away" has long circulated within the industry. General Fusion's listing is the industry's latest attempt to break this curse and move toward commercial implementation. 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