Helion Energy is a private organization developing nuclear fusion energy technology.
| date | round | amount | valuation | investors |
|---|---|---|---|---|
| Jun 2026 | Series G | $465M | not disclosed | not disclosed |
Helion's unique direct energy recovery architecture (skipping steam turbine steps) enables radical compactification and efficiency; Washington state approval for Orion plant de-risks first commercial fusion deployment with Microsoft as anchor customer.