Proxima Fusion injects €140 million to produce high-temperature superconducting tapes, securing energy supply chains for fusion reactors and data centers
German company Proxima Fusion, which specializes in nuclear fusion research, announced a plan to build a €140 million plant, approximately $162.6 million, to produce high-temperature superconducting tapes for reactors. The industrial step aims to secure the core component for its next reactor design, using a mix of public and private funding, including a €21 million government contribution from the state of Lower Saxony. The initiative follows a few months after the company successfully raised a €411 million funding round, placing it among the most-funded start-ups in this vital sector.
High-temperature superconducting tapes constitute an essential engineering pillar in modern fusion facilities, as reactors rely on them to generate massive magnetic fields sufficient to confine plasma and ignite and sustain fusion reactions.The company plans to consume 20,000 km of these tapes for its experimental plant alone, while the commercial plant will require twice that amount.The technical value of these tapes, which emerged as a scientific achievement more than a decade ago, lies in their ability to generate strong magnetic fields at relatively high temperatures compared with conventional superconductors, enabling the construction of smaller reactors with higher energy-efficiency and better reaction containment.
This global technology faces a critical bottleneck in supply-chain concentration, as the overwhelming majority of high-temperature superconducting tape production is currently located in China and Japan. The rising demand for this precision component is not limited to nuclear fusion plants; it also extends to the digital infrastructure sector, with technology firms such as FIR beginning to employ superconducting tapes to boost operational efficiency and double electrical energy density inside massive data centers that power high-consumption AI models.
The shift carries direct operational and strategic implications for the Arab region’s infrastructure and AI sectors, especially in the Gulf states and Egypt. Expansion plans for sovereign high-performance computing centers in the region face a harsh ceiling imposed by electric-grid capacities and cooling costs in desert environments, where power density per server rack becomes the decisive criterion for economic viability. The success of computing firms in integrating superconducting-tape technology for power transmission and distribution within data centers enables regional operators to reduce thermal and electrical losses to unprecedented levels, lowering the total operating cost of advanced computing clusters. Moreover, Europe’s push to localize superconducting-conductor supply chains opens a future pathway to diversify sources of high-power equipment away from Asian monopoly, granting clean-energy projects and regional data centers greater resilience in securing supplies and hedging against potential geopolitical disruptions.
This investment in advanced materials reveals that the AI computing expansion battle is no longer confined to algorithm development and chip design; it is now organically linked to owning the physical infrastructure and securing ultra-high-power electricity supply chains.