Helion Energy
Fusion power generators built to produce electricity. Microsoft has signed a power purchase agreement for its first commercial plant, where site construction has begun in Malaga, Washington, and a 500 MW plant is being developed with steelmaker Nucor.
Energy & climateFusion power generationEverett, United States
FoundersSince 2013
- Valuation
- $16B
- Total raised
- $1.5B
- Last round · Jun 2026
- Series G
- Founded
- 2013
- Employees
- 800
- Quarters in VP50
- 4
Valuation
| Round | Date | Post-money valuation | Raised | Led by |
|---|---|---|---|---|
| Series D | Sep 23, 2020 | $1.3B | $40M | Dustin Moskovitz |
| Series E | Nov 5, 2021 | $3.0B | $500M | Sam Altman |
| Series F | Jan 28, 2025 | $5.4B | $425M | Unknown |
| Series G | Jun 4, 2026 | $16B | $500M | Thrive Capital |
Post-money valuation at each priced round. Log scale.Hover a point for the round
Updated
In VP50
- Q4 2023: no place
- Q1 2024: no place
- Q2 2024: no place
- Q3 2024: no place
- Q4 2024: no place
- Q1 2025: #40
- Q2 2025: #50
- Q3 2025: #50
- Q4 2025: no place
- Q1 2026: no place
- Q2 2026: #44
- Q3 2026: no place
- Q4 2026: no place
Place by quarter since Q4 2023. Best place #40.
Funding rounds
DateRound · leadRaisedValuation
Jan 28, 2025Series F$425M$5.4B
2019Series C$10M—
Jul 6, 2015Series B$11M—
2015Grant · ARPA-E$4M—
Team
David KirtleyCo-founder, CEO- Chris PihlCo-founder, CTO
- George VotroubekCo-founder, Chief scientist
- Anthony PancottiCo-founder
- John SloughCo-founder
- Prag JainCFO
- Savanna ThompsonChief business operations officer
