Prototype Development and Turnkey Delivery: Engineering Next-Generation Power Transmission .

THE CHALLENGE

SuperNode, a pioneer in next-generation power transmission, faced a critical mechanical and thermal challenge: establishing a stable current lead from a standard power source at room temperature (20°C) to a superconducting cable operating at -220°C. The technology is based on a polymeric cryostat with significant advantages over traditional solutions.

SuperNode needed a supplier capable of designing and manufacturing a prototype superconducting current lead. The unit had to handle the extreme temperature differential while integrating mechanically with the cryostat.

THE SOLUTION

With more than 25 years of experience in current leads, M&W Produktion was selected as turnkey supplier. The prototype was designed and developed by our in-house engineering team in close collaboration with SuperNode.

By consolidating design, production, and testing in-house, we developed and manufactured a custom-engineered current lead with an integrated heat exchanger, dimensioned for extreme thermal loads.

THE RESULT

Mark & Wedell delivered the prototypes in 2025, forming a key component of the world’s first operational test of a superconducting cable with a polymeric cryostat.

By managing the complex design and production in-house, we reduced development risk and contributed to the technological verification that brings SuperNode closer to commercial realization of next-generation electrification.