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Tuesday, October 27, 2026
Tokamak Energy — Technical Profile & Analysis
Deep-dive assessment of the Spherical Tokamak architecture, fuel path, and market positioning.
Technology Assessment & Commercial Milestones
Latest coverage — Tokamak Energy
- IndustrySep 18, 2026Type One Energy
A British-US consortium including Type One Energy, Tokamak Energy, and AECOM will build the UK’s first private-sector fusion power plant
A consortium of Type One Energy, Tokamak Energy, and AECOM has formed to construct the UK's first privately funded fusion power plant under the government's Fusion Industry Programme.
- FundingSep 14, 2026Tokamak Energy
Tokamak Energy: $125 Million Raised To Commercialize Fusion Energy
UK-based Tokamak Energy has secured $125 million in a new funding round to accelerate the commercialization of its spherical tokamak fusion concept and expand its high-temperature superconducting magnet technology.
- FundingSep 14, 2026Tokamak Energy
Tokamak Energy: $125 Million Closed To Commercialize Transformative Fusion And Magnet Tech
UK-based Tokamak Energy has secured $125 million in a new funding round to advance its commercial fusion energy development and expand applications for its high-temperature superconducting magnet technology.
- IndustryAug 27, 2026Tokamak Energy
Tokamak Energy unveils images of fusion power plant slated for 2030s
Tokamak Energy has released conceptual designs for its ST80-HTS spherical tokamak power plant, which the company projects will be operational and grid-connected in the 2030s.
- IndustryAug 25, 2026Tokamak Energy
Tokamak Energy joins with Atkins to get fusion energy on the grid
Tokamak Energy has partnered with engineering consultancy Atkins to advance the design and development of its ST-F1 spherical tokamak prototype power plant.
- IndustryAug 12, 2026Tokamak Energy
The Fusion CEO: We're Building a Mini Sun on Earth.
Tokamak Energy CEO Warrick Matthews outlines the company's strategy for deploying compact spherical tokamaks using HTS magnets, targeting commercial fusion power plants in the 2040s.
- ScienceJul 31, 2026PPPL
Heating for fusion: Why toast plasma when you can microwave it!
A collaboration between PPPL, Tokamak Energy, and Kyushu University has proposed a compact spherical tokamak design that utilizes high-frequency microwaves for core plasma heating, aiming to overcome density limits in high-field devices.
- IndustryJul 26, 2026Reuters Fusion
Fusion power getting closer, say UK scientists
UK-based Tokamak Energy claims its compact spherical tokamak, utilizing high-temperature superconducting magnets, will achieve net energy gain within five years and connect to the grid within a decade.
Tokamak & Spherical Tokamak Vanguard
Most mature dataset in fusion. HTS REBCO magnets shrink reactor volume; D-T cycle exploits the highest nuclear cross-section at the lowest temperatures.
Reactor design
Magnetic / Spherical Tokamak (A ≈ 2.0)
Core tech focus
HTS REBCO magnets — 26.2 T tested at CERN (2024)
Key milestones
ST40 reached 100M °C ion temperature (2022). Demo plant ~2030.
Spherical-tokamak pioneer. ST geometry maximises β; combined with > 26 T HTS magnets, the architecture targets the highest power density in the class.
Targets nTτE ≳ 3×10²¹ keV·s·m⁻³ at T ≈ 10–20 keV — the D-T breakeven envelope. REBCO-enabled compact tokamaks operate at 20 K and reach > 20 T toroidal fields, replicating ITER-class confinement at ~1/40th the volume. Spherical variants drop aspect ratio to A ≈ 2.0 to maximise plasma β at lower absolute fields.
- 14.1 MeV neutron flux degrades RAFM steel and tungsten armor above ~80 dpa, forcing periodic first-wall replacement.
- Achieving a Tritium Breeding Ratio > 1.0 in compact geometry — especially on space-constrained spherical-tokamak center-posts — is unresolved.
- REBCO tape suffers irreversible critical-current loss above 0.4% tensile strain; > 30 T fields generate GPa-class Lorentz forces requiring MP35N superalloy substrates and carbon-fiber cocoons.
- Sudden plasma disruptions vaporise plasma-facing components — repair downtime is the single dominant LCOE variable per ARPA-E pyFECONs.
- Disruption-driven capacity-factor losses (AI digital-twin control projected to cut NOAK LCOE 17–20%).
- ⁶Li enrichment supply chain: ~100 t per plant at $5,000/kg can hit 80% of overnight capital cost.
- Balance-of-plant (steam turbine, heat exchangers, cooling towers) dominates D-T capex.
CFS and Energy Singularity are in a direct capital-and-engineering race to validate the compact HTS tokamak concept; CFS leads on global funding, Energy Singularity on localised supply-chain momentum. Kronos and ENN diverge sharply by pursuing spherical geometry to enable high-β aneutronic cycles that delete the steam plant entirely — accepting harder physics in exchange for a streamlined balance-of-plant.
Sourced from the 2026 Global Fusion Energy Comparison — triple-product physics, DEC architecture, and LCOE framework.
Who built Tokamak Energy
Spun out from the UK's legendary Culham Centre for Fusion Energy, this elite trio pioneered the entire concept of the commercial spherical tokamak. Alan Sykes conducted the historical, foundational calculations showing that a cored-apple plasma shape dramatically increased efficiency, while Dr. Mikhail Gryaznevich managed world-class experimental operations. Complemented by Cambridge physicist and corporate strategist Dr. David Kingham, the founders proved that pairing spherical geometry with newly emerging High-Temperature Superconducting (HTS) magnets was the fastest, most compact path to a viable pilot plant in the United Kingdom.
Mikhail Gryaznevich
PhD in Plasma Physics, Ioffe Institute, Russia
Alan Sykes
MA in Physics, University of Oxford
David Kingham
PhD in Physics, University of Cambridge
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