Type One Energy

What Type One Energy does

Type One Energy is a private fusion energy technology company developing stellarator-based magnetic confinement fusion systems. Founded in 2019 by stellarator researchers from the University of Wisconsin-Madison, the company is headquartered in Knoxville, Tennessee with additional offices in Woburn, Massachusetts; Madison, Wisconsin; Vancouver, British Columbia; and Abingdon, United Kingdom. Type One explicitly operates as an original equipment manufacturer (OEM) and technology licensor, partnering with utilities and energy producers to deploy fusion power plants rather than building and operating them itself. Its end customers are electrical utilities, energy producers, and data centers seeking firm, clean baseload power.

The company's flagship product is the Infinity Two stellarator fusion power plant — a deuterium-tritium fueled burning plasma device designed to deliver 350-400 MWe to the grid from 800 MW of fusion power, with commercial operation targeted by 2034 at the Tennessee Valley Authority's (TVA) Bull Run Fossil Plant site in Clinton, Tennessee. Underpinning Infinity Two is the world's first comprehensive, peer-reviewed physics basis for a commercial fusion power plant (seven papers published in the Journal of Plasma Physics in March 2025) and a proprietary modular high-temperature superconducting (HTS) magnet technology developed in-house at the Woburn, MA laboratory based on MIT VIPER cable technology sub-licensed via Commonwealth Fusion Systems. The Infinity One prototype at Bull Run, scheduled for commissioning in 2029, serves as the engineering verification testbed and workforce training platform. A UK variant, UK Infinity Two, is being developed through the UK Infinity Fusion Consortium with Tokamak Energy and AECOM, announced in May 2026.

The business model centers on technology licensing, OEM equipment supply, and project-based engineering services under multi-year contracts with utility partners. Revenue is currently negligible as the company is pre-commercial deployment; the first commercial contracts were signed with TVA Power Service Shops in Muscle Shoals, Alabama in July 2025. Funding is sourced from venture capital (a $29M seed round in March 2023, an $87M convertible note in January 2026 plus a $250M Series B in progress at a $900M pre-money valuation), DOE grants including ARPA-E, Milestone-Based Fusion Development, and INFUSE programs, and State of Tennessee co-funding. Headcount sits at 51-200 employees and the company is led by CEO Christofer Mowry, CTO Thomas Sunn Pedersen (former W7-X Director), and co-founder/Chief Science and Engineering Officer John Canik, with a board chaired by Dr. Bill Madia and including Bernard Looney, the former CEO of bp.

Name

Type One Energy

Legal name

Type One Energy Group

Website

https://typeoneenergy.com

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

51–100 employees

Short description

Type One Energy is a private fusion technology company developing stellarator-based magnetic confinement fusion power plants. It positions as an OEM and technology licensor to utilities such as the Tennessee Valley Authority, with its 350-400 MWe Infinity Two commercial plant targeted for 2034.

Ownership category

akta.pro rank

Product category

Fusion Power Equipment

NAICS

Other Electric Power Generation (221118), Turbine and Turbine Generator Set Units Manufacturing (333611)

SIC

Engines & Turbines (3510), Power, Distribution & Specialty Transformers (3612)

akta.pro primary industry

Renewable Power Electronics & Advanced Inverters R&D (SiC/GaN, Grid-Forming, HVDC Converter Tech) (EUAMAOAF)

akta.pro secondary industry

HVDC Converter Stations & HVDC Transmission EPC (EUAEABAD)

Keywords

• Fusion energy
• Stellarator technology
• Nuclear power equipment
• Plasma confinement systems
• Clean energy hardware

Headquarters

HQ city

Oak Ridge

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Personnel, Supply Chain, Infrastructure, Operations

Revenue model

1. Fusion Technology Licensing and OEM Equipment Sales: Type One Energy sells stellarator fusion technology and acts as original equipment manufacturer (OEM) to energy utilities like TVA. Unlike typical energy startups, Type One licenses its key technologies to utility providers rather than building and operating plants directly. Long-cycle, contract-based revenue tied to multi-year deployment of Infinity One prototype and Infinity Two commercial power plant projects.
2. Engineering and Development Services for Power Plant Projects: Engineering services, design reviews, and technology development under commercial contracts with utilities (e.g., TVA first contracts signed July 2025 for Power Service Shops work in Muscle Shoals, Alabama, and preparatory contracts for Project Infinity). Revenue is project-based and milestone-driven as the company works toward commercial deployment by 2034.

Go-to-market motion3 records

Distribution channels4 records

Core offering

Type One Energy designs and manufactures stellarator fusion power plants, including the Infinity One prototype and the Infinity Two commercial power plant, using high-temperature superconducting magnets and quasi-isodynamic plasma confinement. The company targets sale of its fusion systems to electric utilities and energy companies for deployment as baseload clean power generation.

Product overview

Type One Energy's offering is a single integrated fusion technology platform centered on its optimized stellarator, commercialized under the FusionDirect development program and branded collectively as "Project Infinity." The platform's two flagship physical products are Infinity One — the engineering verification and workforce-training stellarator testbed being deployed at TVA's Bull Run Energy Complex near Oak Ridge, Tennessee (commissioning targeted for 2029) — and Infinity Two — the first-of-a-kind 400 MWe commercial stellarator fusion power plant being developed for TVA and targeting commercial operation around 2034. A UK variant called UK Infinity Two is being pursued through the UK Infinity Fusion Consortium with Tokamak Energy and AECOM. Underpinning both Infinity One and Infinity Two is a proprietary modular high-temperature superconducting (HTS) stellarator magnet technology (developed in-house at Type One Energy's Woburn, MA lab) and a peer-reviewed physics design basis published in the Journal of Plasma Physics.

Differentiator

Problem solved

Functional benefit

Brands

• FusionDirect: Type One Energy's development program pursuing the lowest-risk, shortest-schedule path to a fusion power plant over the coming decade using a partner-intensive and capital-efficient strategy.
• Project Infinity
• Infinity One
• Infinity Two
• UK Infinity Fusion Consortium

Products and services

• Infinity One Prototype stellarator fusion machine designed to validate Type One Energy's high-temperature superconducting magnet and quasi-isodynamic plasma confinement approach; intended for R&D and demonstration purposes, not commercial electricity production.
• Infinity Two Commercial-scale stellarator fusion power plant intended for utility-scale baseload electricity generation, built on the high-field HTS stellarator architecture validated by Infinity One.
• UK Infinity Two UK-specific deployment of the Infinity Two commercial stellarator fusion power plant, developed as part of a government-supported fusion program for the UK market.

Quantifiable outcome

• 800 MW fusion power, 350-400 MWe delivered to grid from a single Infinity Two plant
• +4 more outcomes

Named customers1 record

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature6 records

Partnerships

17 partnerships are on record, tiered flagship, minor and core.

• Tokamak EnergyflagshipStrategic or Co-development Partner · 6 May 2026Co-founded the UK Infinity Fusion Consortium (May 6, 2026) alongside AECOM to develop the first private-sector-led fusion power plant project in the United Kingdom — a UK Infinity Two 400 MWe stellarator fusion power plant. Tokamak Energy contributes HTS magnet technology and manufacturing expertise.
• AECOMflagshipStrategic or Co-development Partner · 6 May 2026Engineering partner for both the U.S. (preliminary design engineering for the 350 MWe Infinity Two at TVA Bull Run) and the UK Infinity Fusion Consortium. AECOM contributed preliminary design engineering for the FOAK Infinity Two project and is providing global engineering and infrastructure delivery capability for the UK project.
• Molten Salt SolutionsminorStrategic or Co-development Partner · 24 March 2026Signed non-binding strategic sales agreements with Type One Energy and Gauss Fusion to supply enriched lithium isotopes (lithium-6 and lithium-7) for fusion energy systems. First deliveries planned for 2027.
• Oak Ridge National Laboratory (ORNL)flagshipStrategic or Co-development Partner · 22 January 2026Partnering with Type One Energy and the University of Tennessee-Knoxville to build a high-heat flux (HHF) testing facility at TVA's Bull Run Energy Complex in Clinton, Tennessee. The $20M facility, funded by DOE's Fusion Energy Sciences program, Type One Energy, and the State of Tennessee, will be the second and most powerful of its kind in the U.S. and the only domestic facility with pressurized helium gas cooling. Completion targeted end of 2027. Also provides exascale supercomputing access (Frontier machine).
• University of Tennessee, KnoxvilleflagshipStrategic or Co-development Partner · 21 January 2026Partnering with ORNL and Type One Energy to build the high-heat flux facility at TVA's Bull Run Energy Complex in Clinton, TN, for testing fusion plasma-facing components under extreme conditions. Completion targeted end of 2027.
• Princeton Plasma Physics Laboratory (PPPL)minorStrategic or Co-development Partner · 21 January 2026Type One Energy is a fusion industry partner in the STELLAR-AI computing platform launched by PPPL, which integrates AI with high-performance computing (CPUs, GPUs, QPUs) to accelerate fusion simulation timelines. Other partners include NVIDIA, Microsoft, Commonwealth Fusion Systems, and General Atomics.
• U.S. Department of Energy (DOE) and ARPA-EflagshipOthers · 8 January 2026Type One Energy received an early ARPA-E grant to begin developing a fusion power plant design, plus first grants from DOE's Milestone-Based Fusion Development and INFUSE Programs. DOE's Fusion Energy Sciences program funds the high-heat flux facility project. ARPA-E committed $135M to fusion energy development (April 2026).
• Tennessee Valley Authority (TVA)flagshipStrategic or Co-development Partner · 19 September 2025TVA issued a Letter of Intent (September 19, 2025) and initial commercial contracts (July 22, 2025) for Project Infinity. TVA will deploy the Infinity One prototype and Infinity Two 350 MWe commercial fusion power plant at TVA's Bull Run Fossil Plant in Clinton, Tennessee, targeting commercial operation by 2034. TVA Power Service Shops in Muscle Shoals, AL provide advanced manufacturing and welding/fabrication work for the project.
• AtkinsRéalisminorImplementation/ SI/ Consulting Partner · 22 July 2025AtkinsRéalis assisted in developing the design of Infinity Two systems and structures outside Type One Energy's core stellarator focus, as part of the partner-rich commercialization program.
• Commonwealth Fusion Systems (CFS)coreOEM/ Whitelabel/ Licensing Partner · 11 February 2025CFS sub-licensed MIT's VIPER HTS cable technology to Type One Energy (announced February 11, 2025). This sub-license gives Type One exclusive rights (via CFS) to use VIPER technology for stellarator fusion magnets, enabling the company's advanced HTS magnet program.
• University of Wisconsin-MadisoncoreStrategic or Co-development PartnerFounding academic partner. Co-founders David Anderson, Chris Hegna, and John Canik built/operated the HSX (Helically Symmetric eXperiment) — the world's first optimized stellarator — at UW-Madison. Listed as a research partner on the company's Our Strategy page.
• Max Planck Institute for Plasma PhysicscoreStrategic or Co-development PartnerOperates the Wendelstein 7-X (W7-X) stellarator experiment in Greifswald, Germany. Type One Energy CTO Thomas Sunn Pedersen served as Director of Stellarator Edge & Divertor Physics at W7-X from 2011-2023. Research partnership underlies the Infinity Two stellarator design.
• MIT Plasma Science and Fusion Center (PSFC)flagshipTechnology or IntegrationMIT developed the VIPER HTS cable technology. Type One Energy built on MIT's technology to design and construct a proprietary, full-fidelity HTS magnet prototype and conducted 77K testing at MIT PSFC. Indirect exclusive rights to MIT VIPER technology via sub-license from Commonwealth Fusion Systems.
• Westinghouse Electric CompanycoreStrategic or Co-development PartnerIndustrial partner. Dr. Paolo Ferroni, Chief Engineer for Advanced Reactors — GenIV/Fusion at Westinghouse, participated as an outside expert on the Infinity Two initial design review board in May 2025. Logo displayed on the company's Our Strategy page commercial partnerships section.
• Sustainable Markets Initiative (SMI)coreGTM or Marketing PartnerType One Energy is a member of the SMI, the global CEO-led network founded by His Majesty King Charles III. CEO Christofer Mowry is the Fusion Task Force Chair of the SMI. UK Consortium partners (Tokamak Energy, AECOM) are also SMI members. The SMI's Terra Carta and Astra Carta mandates guide the collaboration.
• State of TennesseeflagshipOthersState of Tennessee co-funds the high-heat flux facility and supports Project Infinity. Governor Bill Lee publicly backs the Bull Run fusion development campus. Tennessee became the first U.S. state to establish dedicated fusion regulations in June 2026.
• UK Government (Department for Science, Innovation and Technology)coreOthersUK government backs the UK Infinity Fusion Consortium with over £2.5 billion in fusion funding and recently announced a U.S.-UK bilateral deal on fusion R&D. Lord Vallance (Minister for Science, Innovation, Research and Nuclear) and Lord Stockwood (Minister for Investment) publicly endorsed the UK Infinity Two project aligned with the UK Fusion Strategy and STEP Fusion programme.

Scale indicators8 records

Recent moves6 records

Expansion highlights9 records

Direct peers

• Commonwealth Fusion Systems: Well-capitalized private fusion developer pursuing a tokamak design using the same VIPER HTS magnet technology (Type One Energy's HTS magnets are sub-licensed via CFS from MIT PSFC). CFS is the most direct fusion competitor and also Type One's IP sub-licensor for the most critical enabling component in the Infinity Two design.
• Helion Energy: Private fusion developer pursuing pulsed magnetic fusion with a direct-to-electricity approach. Helion competes with Type One for capital, utility offtake partnerships, and policy attention in the U.S. commercial fusion race, and is one of the most heavily capitalized private fusion companies.
• TAE Technologies: Private fusion developer pursuing field-reversed configuration (FRC) plasma with proton-boron fuel. TAE is a direct competitor to Type One in the race to commercial fusion power and competes for the same deep-tech capital, engineering talent, and utility customer mindshare.
• General Fusion: Private fusion developer pursuing magnetized target fusion (MTF). Type One CEO Christofer Mowry previously served as CEO of General Fusion, making it a closely watched competitor and a comparable private-fusion commercialization story (with differences in confinement approach).
• Tokamak Energy: Private spherical tokamak fusion developer with leading HTS magnet capabilities and Type One's partner in the UK Infinity Fusion Consortium. Despite the partnership, Tokamak Energy is also a competitor in the broader fusion power plant race and supplies HTS magnets that overlap technically with Type One's own program.

Broad incumbents

• ITER: International government-backed tokamak project under construction in France. ITER is the dominant publicly funded fusion program and represents both a technology benchmark and a potential supplier of physics insights relevant to Type One's stellarator program.
• Westinghouse Electric Company: Established nuclear fission OEM and Type One's industrial partner for design review and advanced reactor expertise. Westinghouse is a comparable large-scale nuclear power technology provider and a potential future competitor in commercial advanced reactor/fusion licensing.

Emerging players

• Renaissance Fusion: European stellarator fusion startup pursuing HTS-magnet stellarator technology similar to Type One's approach. Renaissance Fusion is an emerging peer in the stellarator category and overlaps with Type One on HTS magnet design and stellarator optimization.
• Xcimer Energy: Early-stage inertial fusion energy startup pursuing a laser-driven approach. Xcimer is an emerging player in the broader commercial fusion race and competes with Type One for federal funding and policy attention.
• Pacific Fusion: Early-stage private fusion startup pursuing pulsed magnetic inertial fusion. Pacific Fusion is an emerging peer competing for similar Series-stage capital and engineering talent in the U.S. commercial fusion ecosystem.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

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Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds5 records

Investors18 records

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M&A

Investments

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Frequently asked questions about Type One Energy