Fuse Energy is a technology company.
Fuse Energy has raised $101.0M across 3 funding rounds.
Fuse Energy has raised $101.0M in total across 3 funding rounds.
Fuse Energy has raised $101.0M in total across 3 funding rounds.
Fuse Energy's investors include Addition, Breakthrough Energy Ventures, Lowercarbon Capital, Chemistry VC, Comal Ventures, Northside Ventures, Y Combinator, Balaji Srinivasan, Derrick Li, 468 Capital, Accel, Avalancha Ventures.
Fuse Energy Technologies is a privately held startup accelerating the transition to fusion energy through a pulsed-power approach, developing advanced machines like Marx generators for nuclear fusion and radiation effects testing. Founded in 2019 and now headquartered in the Bay Area, California, the company builds platforms such as TITAN (a 1TW Impedance Matched Marx Generator) and Z-Star (a 15 TW MagLIF generator) that generate near-term revenue via high-spec radiation testing services for government and commercial clients while scaling toward commercial fusion power.[1][3][4] It serves defense, aerospace, and energy sectors by solving challenges in nuclear effects testing and providing a path to safe, abundant, clean energy, with demonstrated growth through US Air Force contracts, peer-reviewed results, and facility expansions.[3]
Fuse Energy Technologies emerged from a hands-on, scrappy ethos, converting an old carpet factory into its first fusion facility and rapidly prototyping generators. The company designed, built, and operated its initial dense plasma focus device—outputting 0.5 MA and generating neutrons—followed by MU, which fired 3,000 shots within months, earning the first private CNSC license in Canada for operation.[3] Key milestones include successful parallel triggering tests on TITAN stages, winning Air Force SBIR Phase 2 and prototyping contracts, and relocating to a new Bay Area HQ with strategic collaborations; leadership includes a CEO & Founder, US President, and Chief of Staff, embodying a team of "misfits, tinkerers, and doers" tackling impossible problems.[3][4][5]
Fuse rides the global fusion energy surge, fueled by climate imperatives, energy security needs, and US competitiveness in clean power amid geopolitical tensions over fossil fuels and renewables' intermittency. Its timing leverages pulsed-power advances—like MagLIF for efficient neutron generation—positioning it amid market forces such as defense budgets prioritizing radiation-hardened tech and private fusion's $6B+ investments.[1][3] By offering the only private high-spec testing facility, Fuse influences the ecosystem, de-risking fusion commercialization, enabling peers' progress, and bridging national labs like Sandia with startups, potentially recycling radioactive waste into abundant energy.[1][3][4]
Fuse's momentum—new HQ, Air Force wins, and Z-Star scaling—positions it to master micro-scale drivers en route to hybrid fusion plants, capitalizing on fusion's projected trillion-dollar market. Trends like AI-driven plasma control and modular reactors will amplify its path, evolving its influence from testing provider to fusion pioneer, delivering on-demand global energy abundance.[3] This pulsed-power innovator, born from factory hacks, could redefine clean power's fastest practical path.
Fuse Energy has raised $101.0M across 3 funding rounds. Most recently, it raised $10.0M Venture Round in July 2025.