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Helion Energy

Everett, US · founded 2013
L0 · Energy & Power
power developersstartupprivateseries C+

Helion Energy is a fusion energy startup focused on developing commercial-scale magneto-inertial fusion reactors. The company's unique technology fires plasma rings at each other to achieve fusion and recovers energy directly through electromagnetic induction. Under the world's first fusion power purchase agreement, Helion plans to supply clean, always-on electricity to power Microsoft's data center infrastructure.

Ecosystem functionTargets the commercialization of magneto-inertial fusion, backed by a historic PPA with Microsoft to deliver grid-level clean energy this decade.

Business modelCommercial fusion energy generation and sales

Revenue—
Valuation$15.5Breported
Last round$465Mled by Thrive Capital · 2026
Sources · 3 ↓
  1. https://www.helionenergy.com/newsroom/helion-raises-465-million-series-g-funding-round-to-meet-surging-global-demand-for-power
  2. https://siliconangle.com/2026/06/05/fusion-power-startup-helion-valued-15-5b-465m-funding-round/
  3. https://mlq.ai/news/helion-raises-465m-series-g-at-155b-valuation-to-build-fusion-plant-for-microsoft/
Suggest an editLast verified 2026-07-22
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