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Type One Energy

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Type One is commercializing the stellarator fusion concept, the ultimate clean power source, and making it affordable and available to all

Knoxville, United StatesFounded 2019Energy
Valuation $500M–1B Last recorded · 2026
Headcount 100–500 Current team size
Total funding $100–500M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Type One Energy and the history behind them.

About Type One Energy

Type One Energy Group is a company focused on developing and commercializing fusion energy through its optimized stellarator technology. Founded in 2019, the company's mission is to provide the world with sustainable and affordable clean power. The founding team consists of globally-recognized fusion scientists, including CEO Christofer Mowry, CTO Dr. Thomas Sunn Pedersen, Chief Scientist Dr. John Canik, and Chief Engineer Dr. David Anderson. These founders bring a significant track record from institutions like the Max Planck Institute for Plasma Physics, where they were involved with the Wendelstein 7-X stellarator, and the University of Wisconsin-Madison, known for the HSX stellarator. This collective expertise in building advanced stellarator fusion machines is combined with leadership experienced in scaling and commercializing energy technologies.

The company's core technology is the stellarator, a device that uses complex, twisted magnetic coils to confine plasma and create the conditions for nuclear fusion. Type One Energy's approach aims to overcome the traditional complexities of stellarator construction by leveraging advanced manufacturing, modern computational physics, and high-field superconducting magnets. This strategy is intended to create a more efficient and commercially viable fusion power plant. The company is pursuing its 'FusionDirect' development program, which is described as a partner-intensive and capital-efficient strategy aimed at delivering a fusion pilot plant within the coming decade. In 2023, Type One Energy announced a significant partnership with the Tennessee Valley Authority (TVA) and the U.S. Department of Energy’s Oak Ridge National Laboratory (ORNL) to develop and commercialize its stellarator fusion technology, with plans to build its Infinity ONE prototype fusion machine at the Bull Run Fossil Plant in Clinton, Tennessee. The company has secured over $29 million in a first tranche of its Series A financing, led by Breakthrough Energy Ventures, TDK Ventures, and Doral Energy Tech Ventures.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2019
Headquarters
Knoxville, United States
Employees
209
Open positions
32
Dealroom signal
93.0/100
Industry
Energy
Sub-industry
Clean Energy
Sector
Energy, Spinout, Sustainable Development Goals, Nuclear Fusion, Climate Tech, NIF defense security and resilience, NIF Energy Security and Climate Change, DT and LS, science-based
Technology
Hardware, Deep Tech
Business model
Manufacturing
Client focus
b2b

Funding history

4 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
EARLY VCOther financing Feb 2026 $87M $348M Undisclosed ↗
SEEDOther financing Jul 2024 $54M $214M Centaurus Capital · Global From Day One · Anglo American · Doral Energy-Tech Ventures ↗
Showing the latest 2 of 4 recorded eventsBook a demo for the full funding history →

Growth signals

Type One Energy website traffic

Latest recorded traffic for Type One Energy is 10K monthly website visits, up 14.9% over the last three months. Type One Energy's team grew 29% over the past year.

Latest monthly visits10K 3-month web change+14.9% 1-year team growth+29%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Similar companies

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Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

19 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed17 investors entered at this stage

  • TRIREC
  • TDK Ventures
  • MILFAM
  • Doral Energy-Tech Ventures
  • Breakthrough Energy Ventures
  • Grantham Foundation
  • Darco Capital
  • Shorewind Capital
  • VAHOCA
  • Orbia Ventures
  • Centaurus Capital
  • Global From Day One
  • Anglo American
  • Neglected Climate Opportunities
  • Doorga Capital
  • Breakthrough Victoria
  • Ripple Impact Investments

Other known investors2 additional known investors

  • University of Wisconsin-Madison
  • WARF Ventures
Team profiled 13 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 4 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
9 countries with
team presence
🇺🇸 United States81.6%
🇨🇦 Canada10.2%
🇬🇧 United Kingdom3.4%
🇦🇺 Australia1.4%
🇵🇭 Philippines0.7%
Top 5 of 9 shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Type One Energy on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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