Type One Energy Group
PrivateLast Round
Series B
Oct 6, 2026
Total Funding Raised
$598.4M
Momentum
Top 1%
of companies Caplight tracks
Company Overview
Type One Energy Group is a clean energy company that develops fusion energy systems aimed at delivering sustainable and affordable fusion power globally through advanced manufacturing techniques and innovative reactor designs.
Sector
Energy & Sustainability
Verticals
Renewable Energy, Advanced Materials
Business Model
B2B
Customer Profile
Hardware Sales, Services & Consulting
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Type One Energy Group Comparables
Compare Type One Energy Group with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Thea Energy | 88% | |
| Zap Energy | 83% | |
| Proxima Fusion | 83% |
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Type One Energy Group Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series B | Oct 6, 2026 | ||||
| Convertible Debt | Jan 15, 2026 | ||||
| Series A | Mar 26, 2025 | ||||
| Strategic | Nov 22, 2024 | ||||
| Seed | Jul 30, 2024 | ||||
Seed | Mar 28, 2023 |
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Key People
Founding team and executive leadership
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Type One Energy Group Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Zeon Ventures | Strategic |
| VAHOCA | Seed |
| Siemens Energy Ventures | Series B |
| Breakthrough Energy Ventures | Convertible Debt, Series B, Seed |
| The Grantham Foundation for the Protection of the Environment | Seed |
| SiteGround Capital | Series B |
| Breakthrough Energy Foundation | Seed |
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Market signals
Structured signals derived from secondary market and firmographic data.
- Oct 6, 2026
$200M round led by Breakthrough Energy Ventures.
- Jul 16, 2026
Grew 20% QoQ, from 186 to 224 employees.
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Recent news
Latest coverage and updates
- is_developingNov 3, 2026
Type One Energy Group aims to develop its exhaust gas analyzer by testing it at higher magnetic fields and higher neutral pressure.
- is_developingNov 3, 2026
Type One Energy Group has a selected project to create an AI-driven pipeline that rapidly and automatically analyzes spectroscopy to detect leaks, contamination, or damage inside its fusion device.
- expands_facilitiesOct 7, 2026
Type One Energy Group expands its facilities by building two facilities in the Tennessee Valley, including one expected to become the world's first commercial fusion power plant, on Oct 6th '26.
- partners_withOct 7, 2026
Type One Energy Group partners with Barclays PLC through the UK Infinity Fusion Consortium to progress a second commercial fusion deployment project.
- partners_withOct 7, 2026
Type One Energy Group partners with Tokamak Energy Ltd. on a second commercial fusion deployment project through the UK Infinity Fusion Consortium in United Kingdom on Oct 7th '26.
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Type One Energy Group Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
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Frequently Asked Questions
Common questions about Type One Energy Group's valuation, stock price, and market status.
Is Type One Energy Group a public or private company?
Type One Energy Group is a private company.
What is the current stock price of Type One Energy Group?
Type One Energy Group is a private company, so its shares have no public market price. Caplight tracks Type One Energy Group's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Type One Energy Group worth (valuation)?
Valuation information for Type One Energy Group is not publicly available.
Can I buy Type One Energy Group stock?
Type One Energy Group shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Type One Energy Group's last funding round?
Type One Energy Group's most recent funding round was Series B on October 6, 2026.
Who are the main investors in Type One Energy Group?
Key investors in Type One Energy Group include Breakthrough Energy Ventures, Breakthrough Energy Foundation, Doral Energy-Tech Ventures, Centaurus Capital, TDK Ventures.
Will Type One Energy Group IPO soon?
No public IPO plans have been announced for Type One Energy Group.
How can I track Type One Energy Group secondary market activity?
Caplight tracks bids, offers, and trades in Type One Energy Group's shares on secondary markets.