Helion raises $465 million Series G funding round to accelerate commercial fusion energy deployment

Type: Financing · Technology: Nuclear · Country: United States · Value: $465M · Announced: 2026-06-05

Helion secured $465 million in a Series G funding round led by Thrive Capital to accelerate the commercial deployment of fusion energy in the U.S. and expand operations. The financing values Helion at $15.5 billion, nearly triple its prior valuation from early 2025, reflecting strong investor confidence in its fusion technology. The company is constructing its first commercial fusion power plant, Orion, in Malaga, Washington, with a targeted completion by 2028 to supply Microsoft with carbon-free energy. Helion's seventh-generation Polaris prototype recently achieved industry-first milestones, including operating with deuterium-tritium fuel and surpassing plasma temperature records exceeding 150 million°C. The round included participation from Ford Motor Company Executive Chairman Bill Ford and existing investors such as Capricorn Technology Impact Funds and SoftBank Vision Fund 2.

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