Tokamak Energy named magnet systems partner for the UK's STEP fusion power plant programme

Tokamak Energy/Demo4

UK Fusion Energy named Tokamak Energy systems partner for magnets on STEP, the UK's prototype fusion power plant, under a 70 million pound contract running from March 2026 to March 2029. It will work on magnet architecture, tokamak systems engineering and plasma-facing components, drawing on its ST40 and Demo4 test machines.

• Tokamak Energy's 24-month contract (March 2026–2029) covers magnet architecture, tokamak systems engineering, and plasma-facing integration for STEP.
• Tokamak will leverage experience from its ST40 spherical tokamak and Demo4 HTS magnet system for engineering validation and testing.
• The contract supports testing of magnetic configuration, coil forces, plasma stability, and quench behaviour under realistic STEP operating conditions.