Tokamak Energy Lands £70 Million STEP Contract as HTS Fusion Strategy Gains Traction

Tokamak Energy featured in multiple updates this week as it secured a £70 million Magnet Systems Partner role in the U.K. Government’s STEP fusion power plant program, a contract running through 2029. The work will be delivered via TE Magnetics, its high‑temperature superconductor (HTS) division, and will cover HTS magnet systems, tokamak systems engineering, and plasma integration alongside UK Fusion Energy.

The STEP contract is expected to provide multi‑year revenue visibility and deepen Tokamak Energy’s integration into the U.K.’s flagship fusion initiative. UK Fusion Energy also plans to use the company’s ST40 high‑field spherical tokamak, which has recently achieved record plasma current and energy performance, adding external validation to its fusion platform.

Management framed HTS magnets as a critical enabling technology for energy‑producing fusion devices and highlighted potential applications beyond fusion, including power distribution, propulsion, aviation, and life sciences. The company is seeking to industrialize HTS technologies through Ridgway Machines Ltd., acquired in 2025, where newly appointed managing director Mike Allen will help scale magnet manufacturing.

Tokamak Energy emphasized long‑term technical milestones such as HTS magnets operating at fusion‑relevant field strengths and its ST40 reportedly producing 100 million degrees plasma. Senior U.S. government science officials and the CEO of the Fusion Industry Association visited its facilities, underscoring growing institutional engagement and collaborations with U.S. national labs like Princeton Plasma Physics Laboratory and Oak Ridge National Laboratory.

The ST40 program now benefits from support by both the U.S. Department of Energy and the U.K. Department for Energy Security and Net Zero, positioning the company within government‑backed pathways toward a future pilot plant. While commercialization timelines and financial outcomes remain uncertain, this week’s developments collectively strengthen Tokamak Energy’s standing in the fusion supply chain and its prospects in advanced HTS markets.

Tokamak Energy’s leadership also participated in discussions on how fusion and HTS technologies could address rising AI‑driven energy demand and improve data‑centre power efficiency, potentially opening diversification avenues if concepts mature. Overall, the week signaled a solid step forward in both strategic positioning and technological validation, anchored by the high‑profile STEP contract and expanding government partnerships.