The brief

Analyst view

• Traded on Tokyo Stock Exchange (TYO: 5803), Nikkei 225 component; global operations.
• 20-year leader in HTS tape using proprietary IBAD and PLD manufacturing techniques.
• September 2026: Commonwealth Fusion placed record 10,000+ km HTS tape supply agreement; deliveries begin 2027-2028.

Technical approach

As reported

REBCO Tape

Rare-earth superconductor

REBa2Cu3O7 tape using IBAD and PLD operates above 65K with high current density in strong fields.

Tape Design

Multilayer conductor

Substrate, buffer layers, REBCO superconductor, and copper stabilizer balance current, thermal stability and strength.

Production

Industrial scale in Japan

Decades of production for aerospace, power transmission, research. Now expanding capacity for fusion.