Helion vs Proxima Fusion
Helion
Building the world's first fusion power plant
535 employees · est. 2013 · Everett, United States
Helion is the older company (2013 vs 2023); Helion is the larger of the two.
Side-by-Side Comparison
| Metric | Helion | Proxima Fusion |
|---|---|---|
| Founded | ||
| Founded | 2013 older | 2023 |
| Headquarters | ||
| Headquarters | Everett, United States | Germany |
| Employees | ||
| Employees | 535 larger | 196 |
| Industry | ||
| Industry | ESG, Energy, Renewable Energy | Energy |
| Funding Stage | ||
| Funding Stage | Series G | Venture round |
| Total Funding | ||
| Total Funding | $1.47B | $662.00M |
| Funding Rounds | ||
| Funding Rounds | 9 | 9 |
| Services | ||
| Services | Fusion Power Plant Development, Electricity Production Technology, Energy Solutions | Fusion Power Plant Conceptualization, Stellarator Design and Optimization, Engineering and Computational Research, Collaborative Project Development |
| Target Customers | ||
| Target Customers | Energy Sector Companies, Sustainable Practitioners, Investors in Renewable Energy, Advanced Technology Innovators | Energy Companies, Research Institutions, Government Energy Departments, Investment Entities in Renewable Energy |
| Taxonomy | ||
| Taxonomy | Fusion EnergyClean ElectricityZero-Carbon PowerHigh VoltagePlasma PhysicsEnergy Technology +9 | Stellarator TechnologyMagnetic ConfinementHigh-Energy ParticlesFusion Power PlantsInnovative Energy SolutionsClimate Solutions +4 |
| Website | ||
| Website | helionenergy.com | proximafusion.com |
About Helion
Helion, founded in 2013, is ambitiously pursuing the development of the world's first fusion power plant. Headquartered in Everett, WA, this pioneering company operates at the intersection of ESG, Energy, and Renewable Energy sectors. Their mission: to deliver unlimited, clean electricity worldwide,...
About Proxima Fusion
Proxima Fusion, founded in 2023, is quickly emerging as a transformative player in the energy industry, known particularly for building the first generation of stellarator fusion power plants. Headquartered in Germany, Proxima Fusion is Europe’s fastest-growing fusion company, embodying its slogan,...
Also comparing in this category
Comparing more than these two?
Get Helion, Proxima Fusion and up to nine more competitors side by side in one PDF: team, funding, traffic and every dated move of the last six months. Every company is re-checked on the day you order.
How does Helion compare?
A PDF of Helion and up to 10 competitors you pick: team, funding, traffic and every dated move of the last 90 days. Each company is re-checked on the day you order, so it is current.
This takes a few seconds: we look beyond our own index too.
Rival Readout
Comparing competitors? We do this properly.
10 rivals, 90 days of dated moves in 7 business days: a ranked list of what matters, each with its source, ending in a 60-minute readout with your team.
Frequently Asked Questions
Compare Helion with someone else
Start typing a company name or domain.
Compiled from the BounceWatch company index. We last looked at Helion on 26 Mar 2026, and Proxima Fusion on 28 May 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.
