As of Oct 26, 2026, Helion Energy's estimated valuation is $12.23B; its last round was a Series G on Apr 23, 2026, raising $732.84M at a $15.5B valuation.
Estimated Valuation$12.23B
Valuation As OfOct 26, 2026
Latest Raise$732.84M
Latest RoundSeries G
Latest Funding Valuation$15.5B
Latest Funding DateApr 23, 2026
About Helion Energy
Helion Energy is a fusion energy company building pulsed fusion generators designed to produce electricity directly, backed by Sam Altman with Microsoft as its first announced customer for fusion power.
Funding rounds
| Round | |||
|---|---|---|---|
| Apr 23, 2026 | Series G | $732.84M | $15.5B |
| Jan 27, 2025 | Series F | $425M | $5.25B |
| Sep 14, 2023 | Series E-1 | $65.79M | - |
| Nov 4, 2021 | Series E | $490M | $3B |
| Sep 9, 2020 | Series D | $39.82M | $1.25B |
| Feb 21, 2019 | Series C | $10M | - |
| Jun 19, 2015 | Series B | $21.23M | - |
| Jul 28, 2014 | Series A | $1.5M | - |
Perpetual markets
No perpetual markets available.
Token issuers
No token issuer markets available.
Frequently asked questions
What is Helion Energy's estimated valuation?
As of Oct 26, 2026, Helion Energy's latest tracked valuation estimate is $12.23B.
When was Helion Energy's last funding round?
Helion Energy's latest tracked funding round was a Series G on Apr 23, 2026, raising $732.84M at a $15.5B valuation.
Valuation and funding data updated Oct 27, 2026, 9:56 AM UTC.
Market data updated Oct 27, 2026, 9:56 AM UTC.