Proxima Fusion bets €140M on a critical fusion ingredient dominated by Asian suppliers

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September 10, 2026, 6:38 PM

• •Proxima Fusion plans to build a factory to manufacture fusion-grade HTS tape.
• •The project is budgeted at €140 million, with €21 million coming from Lower Saxony.
• •HTS tape is used to create strong magnetic fields that confine plasma in fusion reactors.
• •Proxima says its demonstration plant will need 20,000 kilometers of HTS tape, and a commercial plant twice that.
• •The article says most current HTS tape production is concentrated in China and Japan.

Proxima Fusion says it will build a €140 million factory to make fusion-grade high-temperature superconducting tape for its reactor program. The German startup plans to fund the project with a mix of public and private money, including €21 million from the state of Lower Saxony. Proxima says its demonstration plant will require 20,000 kilometers of HTS tape, while a commercial plant would need roughly twice that amount. The article says most HTS tape is currently produced in China and Japan, making supply a strategic concern for fusion companies.

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