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

TechCrunch • Thu, 04 Jun 2026

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.

What happened?

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

Story details

Fusion startup Helion is racing to complete a power plant for Microsoft by 2028.

A fresh infusion of cash should help with that.

Why it matters

This story helps build a stronger internal English tech archive around Technology, giving search visitors more reasons to keep browsing the site instead of bouncing after a single headline.

Original source

https://techcrunch.com/2026/06/04/helion-the-sam-altman-backed-fusion-startup-raises-465m-to-build-a-power-plant-for-microsoft/