Tokamak Energy
Delivering transformative superconducting and fusion energy technologies
163 in this dataset · 50 in this dataset
5 developers pursuing it
14 organisations in GB
What these terms mean
Every classification on this page, defined. These are controlled-vocabulary terms, so the same word means the same thing on every profile.
- Fusion developer
- Develops a fusion device or power plant concept. Carries no implication that the device exists or works.
- Supplier
- Supplies components, materials or fuel to the sector without developing a reactor or device of its own.
- Fusion
- Organizations pursuing energy from nuclear fusion, and their dedicated supply chain.
- Supply chain
- Components, materials, instrumentation and services sold into fusion or fission programmes.
- Spherical tokamak › › › Spherical tokamak
- A tokamak squeezed towards a cored-apple shape. The tighter aspect ratio holds plasma pressure with less magnetic field, which is efficient — but leaves very little room at the centre for the central column.
- Deuterium–tritium
- Lowest ignition threshold; 80% of energy in 14.1 MeV neutrons. The reference fuel for every near-term net-gain claim.
Funding
across 1 round
| Date | Instrument | Amount | Detail |
|---|---|---|---|
| 2024-11 | Equity roundGrowth | $125M | — |
In Tokamak Energy’s own words
Quoted from the organisation’s own site as we archived it. Their description of themselves, not ours, and not a claim this site has checked.
Tokamak Energy is a commercial superconducting and fusion energy technologies company.
Founded in 2009 as a spin-out from UK Atomic Energy Authority, we have pursued a two-track strategy: advancing fusion science while developing leading high temperature superconducting (HTS) capabilities.
Today, we are working with partners to develop and deploy HTS technologies for applications including power distribution, life sciences, propulsion, advanced manufacturing, and fusion energy.
We operate through three integrated businesses: TE Magnetics, Ridgway Machines and Fusion.
TE Magnetics is Tokamak Energy’s HTS business division, established in 2024 to commercialise the company’s high-temperature superconducting (HTS) technology. We work with partners across data centres, life sciences, advanced propulsion, fusion energy, and motors and generators to develop next-generation magnet and power systems.
Our HTS technology was originally developed for fusion energy, to generate the powerful magnetic fields needed to confine plasma. Building on more than a decade of innovation, we combine world-leading expertise with advanced development and testing facilities.
Our technology enables customers to increase power density, improve efficiency, and reduce the size and weight of critical infrastructure.
Our Fusion business develops technologies, expertise and testbeds that support fusion energy programmes around the world.
We also provide fusion design, engineering and operational expertise to governments, research organisations and industry partners, helping to accelerate the development and commercialisation of fusion energy.
We have an unrivalled track record in developing HTS technologies and magnetic confinement fusion, covering design, build and operation.
Developing fusion energy and HTS technology at scale can only be achieved through collaboration. We work with leading organisations across government, industry, academia, and the scientific community to advance fusion science, accelerate HTS innovation, and unlock applications for superconducting technologies around the world.
Tokamak Energy has partnered with the U.S. DOE and the UK Department for Energy Security and Net Zero (DESNZ) on LEAPS (Lithium Evaporations to Advance PFCs in ST40), a joint $52 million upgrade programme for our ST40 tokamak, with the aim of advancing key fusion technologies for future power plants.
DESNZ is a key partner in LEAPS, the joint UK-US programme supporting a $52 million upgrade of our ST40 tokamak to advance critical fusion technologies and capabilities. This strengthens the UK-US fusion partnership and leadership in the commercialisation of fusion energy.
Tokamak Energy has been selected as the Magnet Systems Partner for the UK Government’s STEP Fusion prototype power plant programme under a £70 million contract running to 2029. Working with UK Fusion Energy (UKFE), we are developing the HTS magnet system for STEP and providing specialist tokamak expertise.
Furukawa Electric is a strategic partner, investor, and one of the world’s leading suppliers of HTS tape. Together, we are advancing the commercial deployment of HTS technologies across multiple sectors, as well as exploring future manufacturing opportunities in Japan and the UK.
Tokamak Energy and General Atomics are collaborating to advance HTS magnet technology for industrial applications. The partnership combines General Atomics’ expertise in large-scale magnet manufacturing with Tokamak Energy’s pioneering HTS capabilities to accelerate the development and deployment of next-generation HTS systems.
Through a cooperative research and development agreement, PPPL physicists contribute to ST40 operations and research on an ongoing basis. PPPL is also a major partner in LEAPS, the joint UK-US ST40 upgrade programme.
ORNL is a major partner in LEAPS, the joint UK-US ST40 upgrade programme. Collaborative projects have included advanced fuel delivery systems, non-inductive plasma current sustainment, and the development of materials and coatings for future fusion power plants.
Where Tokamak Energy sits
Composed from records in this dataset, not from outside research. Every figure below is counted from what the site holds, so it moves when the data does.
Tokamak Energy is one of 5 organisations in this dataset pursuing spherical tokamak.
It is one of 14 we hold in GB.
It operates 1 device in this dataset, none of which carries recorded performance figures.
Disclosed equity funding totals $125m across 1 round, which ranks 9 of 14 among organisations here with a disclosed figure.
Related organisations
Others pursuing the same approach, then others in the same country.
People
Names and roles as Tokamak Energy’s own team page states them. Not verified against any other source, and rosters go out of date.
Measured results
Results recorded on this operator’s devices. Design parameters — bore, field, dimensions — are excluded: a machine’s size is not something it achieved. 3 design parameters are held on the device pages.
| Device | Metric | Value | Status | Source |
|---|---|---|---|---|
| ST40 | Fusion triple product (nTτ_E) | 6.3 × 10¹⁸ m⁻³·keV·s | claimed2022 | Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria |
| ST40 | Ion temperature | 9.6 keV | claimed2022 | Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria |
| ST40 | Plasma density | 5.5 × 10¹⁹ m⁻³ | claimed2022 | Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria |
| ST40 | Energy confinement time (τ_E) | 0.012 s | claimed2022 | Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria |
| ST40 | Plasma current | 2 MA | claimed | World Survey of Fusion Devices 2022 |
| ST40 | Plasma duration | 1 s | claimed | World Survey of Fusion Devices 2022 |
Devices operated 1
Pursuing the same technology
Others in this dataset working on Spherical tokamak.
Sources
A source marked operator is the subject’s own publication. That is legitimate, and it is not independent confirmation. Methodology.