Helion raises $465M Series G at $15.5B fusion valuation

Helion Energy on June 4 closed a $465 million Series G led by Thrive Capital at a $15.5 billion post-money valuation, lifting total funding to roughly $1.5 billion as the Everett, Washington startup races to deliver fusion electricity to Microsoft from its Orion plant in Malaga by 2028. New investors include Lux Capital, Peak XV Partners, Alta Park Capital, Anti Fund, BoxGroup and Ford Motor Executive Chairman Bill Ford, joining existing backers SoftBank Vision Fund 2, Lightspeed, Mithril, Capricorn and Good Ventures; the cash will scale manufacturing and feed the Polaris prototype and forthcoming Tiny Merge testbed campaigns.