Avalanche Energy employee prepares fusion plasma test on one of the company’s compact devices.
Avalanche Energy employee prepares fusion plasma test on one of the company’s compact devices. (Avalanche Photo)

Seattle startup Avalanche Energy has announced $29 million in funding to support its push toward fusion power and to help launch a commercial-scale testing facility for fusion technologies.

The new capital is largely earmarked for the FusionWERX test facility in Richland, WA, that is a public-private partnership offering shared research and development resources to companies, government labs and universities to develop the sector’s supply chain and to produce radioactive materials. The recent investment will also help pay for equipment including superconducting magnets that will be needed for Avalanche’s next-generation compact fusion device.

The round included all of the startup’s existing backers: Congruent Ventures, Founders Fund, Lowercarbon Capital and Toyota Ventures. New investors 8090 Industries, Overlay Capital and others also joined.

The team hopes its next fusion machine will hit the sought-after target of “Q greater than one” — which is when more energy is produced by the plasma than was put into it.

February 3, 2026, Lisa Stiffler, GeekWire: Soviet secrets and Star Wars prototypes: Avalanche raises $29M for its desktop-sized power quest – GeekWire