Helion
Develops fusion energy technology aimed at moving fusion power from laboratory milestones into construction-scale deployment.
Overview
Helion is a fusion energy company focused on commercializing power generation as the sector shifts from laboratory milestones toward construction-scale projects. Its work targets energy markets and infrastructure customers seeking new electricity sources. The company is differentiated by its positioning at the buildout stage of fusion development and by high-profile backing from Sam Altman. Helion raised $465 million in an undisclosed round announced June 5, 2026, valuing the company at $15.5 billion and bringing disclosed funding in the dataset to $465 million.
Funding History
Sam Altman-backed Helion raises $465M at $15.5B as fusion moves from lab milestone to construction site
Frequently Asked Questions
- How much has Helion raised in total?
- Helion has raised a total of $465M across 1 funding round.
- Who are Helion's investors?
- Helion's investors include Lightspeed Venture Partners, Thrive Capital, Lux Capital, SoftBank Vision Fund 2, Peak XV Partners, and 7 others.
- What does Helion do?
- Helion is a fusion energy company focused on commercializing power generation as the sector shifts from laboratory milestones toward construction-scale projects. Its work targets energy markets and infrastructure customers seeking new electricity sources. The company is differentiated by its positioning at the buildout stage of fusion development and by high-profile backing from Sam Altman. Helion raised $465 million in an undisclosed round announced June 5, 2026, valuing the company at $15.5 billion and bringing disclosed funding in the dataset to $465 million.
- Where is Helion headquartered?
- Helion is headquartered in Everett, United States.
Investors
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