Startups

Helion Energy

Everett, Washington

Fusion power company building pulsed fusion systems, with a mission to operate the world's first fusion power plant. Founded in 2013. Headquarters in Everett, Washington.

Team

No team members on record yet.

Investments

$470M2026-06-04	Brandon Reeves
$425M2025	Lightspeed, Y Combinator, Capricorn Investment Group, Mithril Capital Management
$40M2020-09-22	Y Combinator
$1M2014-08-14	Y Combinator, Mithril Capital Management
$1M2014	Y Combinator, Mithril Capital Management
$10MUnknown date	Y Combinator
$35MUnknown date	Y Combinator
$10MUnknown date	Y Combinator
$500MUnknown date	Lightspeed, Anti Fund, Y Combinator, Lux Capital, BoxGroup, Mithril Capital Management, Alta Park Capital