Avalanche Energy

Avalanche is a VC-backed, compact fusion energy start-up based in Seattle, WA.

Climate and energy Developer tools and cloud

Latest funding

$29M Seed · February 3, 2026

Source: fundraisingfox.com

Funding history ↓

Website: avalanchefusion.com.

X: @AvalancheFusion · 4,321 followers.

LinkedIn: avalanche-fusion.

Categories: Climate and energy Developer tools and cloud.

Stage: Seed.

Based in: Seattle, United States.

Last round: Feb 3, 2026 · 285 days ago.

On Recent Funding since: Sep 29, 2026.

Signals

X account@AvalancheFusion · created Apr 7, 2021 (5 years old) · 4,321 followers

Website registeredJun 23, 2023 (3 years old)

About Avalanche Energy

We are designing, building, testing and iterating our fusion machines to supply services for the emerging neutron markets and for rapidly scalable, remote power needs.

TIMELINE · MONEY RAISED

Avalanche Energy | 1763 days from X account to first raise on record

@AvalancheFusion·Raised $29M in 1 sourced round·2 signals before the first raise

Money raised, round by round (amounts linked to their source). Pins are dated signals; hover the icons for dates.

Funding rounds

Date	Round	Amount	Lead	Source
Feb 3, 2026	Seed	$29M	—	fundraisingfox.com

Timeline

June 23, 2023
Website created
April 7, 2021
X account created

Founders and team

BR
Brian Riordan Founder

LinkedIn · source: avalanchefusion.com
RL
Robin Langtry Founder

source: avalanchefusion.com

Investors

Companies like Avalanche Energy

220n BioSeed · May 2026
NNT-Tao$22M Series A · Feb 2023
PPacific FusionSeries A · Oct 2024
RRenaissance Fusion$37.62M Series A · Mar 2025
CCanza Finance$2.3M Seed · Jan 2024
SStellios Technologies$5M Pre Seed · Oct 2026

Sources and API

Every amount links to the page it came from. * Estimated from an accelerator's published standard deal, not a company-specific disclosure. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/avalanche-energy (get a free API key).