Helion, the Sam Altman-backed fusion startup, raises $465M to build a power plant for Microsoft

Fusion startup Helion is racing to complete a power plant for Microsoft by 2028. A fresh infusion of cash should help with that.

Jun 4, 2026 0

Helion, the Sam Altman-backed fusion startup, raises $465M to build a power plant for Microsoft

Fusion startup Helion is racing to complete a power plant for Microsoft by 2028. A fresh infusion of cash should help with that.

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