# Avalanche Energy

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/avalanche-energy-2

- Industry: Power & Utilities
- Headquarters: US
- Website: www.avalanchefusion.com
- Total disclosed funding: $45M
- Latest round: Series A (Apr 24, 2023)
- Investors on record: 10

## About

Founded in 2018 by Brian Riordan, and based in Washington, US, Avalanche Energy Designs LLC., trading under the name Avalanche operates as a designer, tester, and developer of micro fusion reactors with the aim to generate clean-tech, carbon-free energy. In February 2026, Avalanche, Inc. raised USD 29 million in venture funding led by RA Capital Management, with participation from 8090 Industries, Overlay Capital, Congruent Ventures, Founders Fund, Lowercarbon Capital, and Toyota Ventures.

The firm designs, builds, tests, and fixes micro nuclear fusion reactors that generate clean and carbon-free energy to power various applications. The firm uses Magnetic Confinement Fusion, Inertial Confinement Fusion, Magnetized Target Fusion, Field-Reversed Configuration, Stellarator, and Orbitron methodology to generate energy. The company will use the February 2026 funding to build and equip its FusionWERX test facility and advance development of its next-generation compact fusion device.

## Funding rounds

- Series A, Apr 24, 2023, $40M — Founders Fund, Grantham Foundation, Autodesk, Congruent Ventures, Toyota Ventures, Lowercarbon Capital, MCJ, ClearPath, Climate Capital
- Seed, Jun 2, 2021, $5M — Congruent Ventures, PRIME Impact Fund, Lowercarbon Capital

## Investors

- Congruent Ventures (https://capitalatlas.ai/funds/congruent-ventures) — Seed, Series A
- PRIME Impact Fund (https://capitalatlas.ai/funds/prime-impact-fund) — Seed
- Lowercarbon Capital (https://capitalatlas.ai/funds/lowercarbon-capital) — Seed, Series A
- Founders Fund (https://capitalatlas.ai/funds/founders-fund) — Series A
- Grantham Foundation — Series A
- Autodesk (https://capitalatlas.ai/funds/autodesk) — Series A
- Toyota Ventures (https://capitalatlas.ai/funds/toyota-ventures) — Series A
- MCJ (https://capitalatlas.ai/funds/mcj) — Series A
- ClearPath — Series A
- Climate Capital (https://capitalatlas.ai/funds/climate-capital) — Series A