Avalanche Energy lands $29M to expand compact fusion efforts
Avalanche Energy, a Seattle-based fusion startup, has raised $29 million in new financing as it works toward a compact fusion system capable of producing net energy. The round was led by RA Capital Management, with participation from existing investors Congruent Ventures, Founders Fund, Lowercarbon Capital, and Toyota Ventures. New backers including 8090 Industries and Overlay Capital also joined the syndicate.
The funding also serves a strategic purpose beyond balance-sheet strength: it fully matches a $10 million Washington State Department of Commerce Green Jobs Grant awarded in mid-2025. With the matching capital secured, the company says it now has the runway to scale operations and accelerate technical milestones tied to licensing, facility buildout, and its next-generation fusion devices.
Scaling FusionWERX into a commercial test hub
A major portion of the new funding will be directed toward expanding FusionWERX, Avalanche Energy’s commercial-scale fusion test facility located in Richland, Washington. The site, launched in April 2025, was built to support a broader fusion ecosystem—ranging from technology validation to workforce development—at a time when many fusion companies still rely on repurposed lab infrastructure.
According to the company, FusionWERX is expected to operate under a broad-scope radioactive materials license and add advanced tritium-handling capabilities by 2027. If achieved, those capabilities would enable a wider range of fusion-relevant work, including materials research, component testing, and the company’s own deuterium-tritium experiments.
The facility is central to Avalanche Energy’s plan to run a Q>1 deuterium-tritium test program—industry shorthand for attempting to demonstrate a system producing more fusion power than the power used to heat and confine the plasma. The company’s stated aim is to demonstrate what it describes as the world’s first net-energy compact fusion system, a milestone that would be significant both technically and commercially.
Where the money goes: team growth, magnets, and next devices
Beyond the Richland facility, the company plans to use the capital to expand headcount and procure long-lead equipment, including superconducting magnets—components that often represent both a cost and schedule risk for advanced energy hardware programs.
Avalanche Energy also said it will accelerate work on next-generation devices designed for multiple use cases, including material irradiation, mobile power generation, and grid support. The company is positioning its technology as modular and stackable, aiming for a pathway where early versions can serve specialized markets while later iterations pursue broader energy production goals.
Compact fusion aimed at “real-world” operating environments
Founded in 2018 by Robin Langtry and Brian Riordan, Avalanche Energy is developing fusion systems intended for environments where conventional power infrastructure is difficult to deploy. The company argues that compact, modular fusion units could offer high energy density for defense, space, and commercial applications—particularly where logistics, fuel supply, or grid reliability are constraints.
Potential applications cited by the company include space propulsion, underwater unmanned vehicles, data centers, remote installations, and military bases. The pitch is that a small footprint combined with stable neutron production and scalable output could make fusion practical in “austere” settings where diesel, batteries, or grid connections are costly or unreliable.
Engineering milestones and a rapid-iteration approach
Avalanche Energy points to a series of engineering advances as evidence of momentum. In 2025, the company reported a vacuum high-voltage milestone: operating a fusion machine at 300 kV, which it said corresponds to 5,000 kV per metre in field strength. The company described the result as record-setting and tied it to improved efficiency for its magneto-electrostatic fusion approach.
On the research side, the company has published three peer-reviewed papers describing its Orbitron plasma confinement scheme, with additional research planned for release in 2026. Avalanche Energy also emphasizes a rapid-iteration development model, saying its design cycles can move in days rather than years—an approach that, if sustained, could help it test hardware concepts faster than traditional large-scale fusion programs.
Investor and CEO comments highlight commercialization focus
“We’ve achieved significant breakthroughs on the plasma physics side that have kept us intensely focused on advancing our technology over the past six months,” said Robin Langtry, CEO and co-founder of Avalanche Energy. “The new funding will enable us to accelerate the company to the next phase – achieving licensing for commercial-scale fusion operations and preparing for our Deuterium-Tritium Q>1 test program.”
RA Capital Management framed its interest in the company around speed and near-term market potential. “Avalanche is unique among companies in the fusion space in its ability to rapidly iterate to improve and advance its compact modular technology as well as its ability to generate near-term revenue prior to energy break-even,” said Kyle Teamey, Managing Partner, Planetary Health at RA Capital Management.
New investor 8090 Industries also emphasized commercialization. “What drew us to Avalanche is their focus on commercial systems, not just experiments,” said Rayyan Islam, co-founder and General Partner of 8090 Industries, pointing to FusionWERX, modular machines, isotopes, and rapid iteration as evidence of a plan to build industrial infrastructure alongside core physics development.
What to watch next
The company’s near-term progress will likely be measured by execution on facility expansion, regulatory and licensing milestones, and the timeline toward tritium-capable operations. For the broader fusion sector, FusionWERX could also become an important piece of shared infrastructure—if it reaches its targeted licensing and operational capabilities—potentially enabling faster testing and validation across multiple programs.
For Avalanche Energy, the new financing provides a clearer runway to pursue its central claim: that compact, modular fusion can transition from experimental hardware to deployable systems serving real markets, while still advancing toward the long-sought goal of net-energy fusion.
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