Eos
A planar-coil stellarator system under development for fusion research and radioisotope production.
Maturity not rated
Startup · United States
Thea Energy
HQ Kearny, New JerseyFounded 2022
Discover Thea Energy, a fusion energy company reinventing the stellarator to create a limitless source of zero emission energy for a sustainable future.
Funding2 rounds · $120M
- Equity raised
- $120M
- Latest
- $100MSeries B · May 27, 2026
Feb 8, 2024May 27, 2026
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| May 27, 2026 | Series B | $100M | — | U.S. Innovative Technology Fund | — | Confirmed |
| Feb 8, 2024 | Series A | $20.0M | — | — | Anglo American, Hitachi Ventures, Lowercarbon Capital, Prelude Ventures, Starlight Ventures | Confirmed |
- $100MMay 27, 2026
- Series AConfirmed$20.0MFeb 8, 2024
Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.
Systems2
Helios
A proposed commercial fusion power plant design based on Thea Energy’s stellarator architecture.
Maturity not rated
Newest unveiled first. Open a system for its milestone timeline, components and sources.
Capabilities1
| Technology | Role | Maturity | TRL | Notes | Confidence |
|---|---|---|---|---|---|
| Magnetic-confinement fusion | Developer | Development | — | — | Reported |
Maturity and TRL describe this organization's work; the field-wide maturity is on each technology's page.
People2
- Brian Berzin
Co-Founder and Chief Executive Officer
- David Gates
Co-founder
Sources8
Profile3
- 1
Sixth-Domain · Supports Organization · country, Organization · kind
“{"country": "USA", "hq_iso2": "US", "id": "d3f9c4c3-d3a6-40a8-ada9-349dde89db7b"}”
- 2
Supports Organization · founded year
“We were founded in 2022 with technology developed at Princeton University.”
- 3
Systems1
- 4CompanyEOS - Thea Energy
Thea Energy · Supports System
“Thea Energy’s Eos integrated stellarator facility will create power plant relevant, steady-state fusion using the Company’s simplified architecture. Eos is a critical step towards an abundant source of energy, and Thea Energy’s first commercial fusion power plant, Helios.”
Technologies1
- 5
Thea Energy · Supports Organization · description, Organization · name, Organization · website, Organization technology
“Discover Thea Energy, a fusion energy company reinventing the stellarator to create a limitless source of zero emission energy for a sustainable future.”
Funding2
- 6
thea.energy · Jan 21, 2025 · Supports Funding round · amount
“Thea Energy Inc., a fusion energy company advancing stellarator technology for commercialization, today announced the closing of a $20 million Series A financing.”
- 7CompanyThea Energy Raises $100 Million Series B Funding to Build Scalable Fusion Power Plants - Thea Energy
Thea Energy · Supports Funding round, Funding round · investors, Organization · ownership, Role
“today announced it has raised $100 million in Series B funding that draws support from Thomas Tull’s US Innovative Technology Fund (USIT), General Innovation Capital Partners (GICP), Linse Capital, Calm Ventures, Climate Capital, Divergent Capital, Emerald Technology Ventures, Gaingels, Idemitsu Kosan, Overlay Capital, Timescale Ventures, and Whatif Ventures. The funding will”
People1
- 8
Supports Organization · hq city, Organization · hq region, Role
“Company’s headquarters in Kearny, NJ.”
Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.