Nexans inaugurates Stella Nova and unveils a world-first demonstration for
the electrification of data hall infrastructures in data centers


_PRESS RELEASE_

• Nexans opens Stella Nova, a cutting-edge Center of Excellence driving the next-
generation of electrification technologies, from superconducting cable systems to
cryogenic lines technologies and forming and welding solutions.
• World-first demonstration of superconducting LV AC and LV DC cables designed to meet
the massive power demands of tomorrow’s hyperscale data centers, combining energy
efficiency, compact design, and sustainability.
• Shaping the future of energy infrastructure, Nexans reinforces its strategic leadership in
enabling a more powerful, connected, and sustainable digital economy.


Hanover, June 4, 2025 – At a time when digital infrastructures and sustainability challenges are
reshaping the global energy landscape, Nexans is investing to meet tomorrow’s critical demands. Today,
Nexans inaugurates Stella Nova, its new Center of Excellence located in Hanover, Germany. On this
occasion, the Group also unveils a world-first demonstration: a test bench showcasing the benefits of
superconducting cables for powering data centers using low-voltage alternating current (LV AC) and
direct current (LV DC).

A new industrial hub dedicated to innovation
Located on the Panattoni Campus in Hanover, Nexans Stella Nova brings together more than 70 experts
in engineering, research, and manufacturing. The new site spans 9,000 m² and is dedicated to three
strategic domains:
• High-precision forming and welding machines for the energy and industrial sectors,
• Cryogenic systems for safe transfer of cryogenic fluids such as hydrogen,
• Superconducting cable and Fault Current Limiter systems to transform electrical infrastructure.

Addressing the future power needs of data centers
As global electricity consumption by data centers could reach 10% of total energy demand by 20301,
Nexans is innovating to meet the critical challenges of capacity, efficiency, and sustainability.
Superconducting cable systems enable the transmission of up to 10 times more power compared to
conventional cables, with zero energy loss, minimal heat generation, and significantly reduced
infrastructure footprint. Great opportunities lie ahead with regards potential applications of
superconducting technology. Nexans is already involved in multiple projects aiming at developing
superconducting solutions beyond the data center industry.

Jérôme Fournier, Corporate VP Director of Innovation at Nexans, comments: "With Stella Nova and this
world-first demonstration, Nexans is addressing one of the critical challenges of tomorrow: ensuring the
sustainable electrification of an increasingly digital world. Superconductivity offers a breakthrough
solution to meet the massive power needs of next-generation data centers, while reducing their
environmental footprint and accelerating the energy transition."


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Source: IEA report
Yann Duclot, Director of Acceleration Units at Nexans, adds: “The industrialization of superconductivity
is revolutionizing the path toward a more efficient and modern energy grid. With its advancing technology
readiness and ongoing breakthroughs, superconductivity serves as a powerful catalyst for accelerating
the energy transition and achieving Net-Zero.”

For over 30 years, Nexans has been at the forefront of superconducting and cryogenic systems. This
leadership will be further strengthened by the establishment of a new testing facility: this state-of-the-art
high-voltage laboratory is designed for testing conventional and superconducting cables,
superconducting current limiters and components, as well as providing a high current test field for
superconducting tapes and components.

A strengthened commitment to the energy transition
The inauguration of Stella Nova also marks the celebration of 125 years of Nexans' industrial history.
As a pioneer in electrification since 1900, Nexans today plays a central role in enabling the transition to
renewable energies, supporting the decarbonization of infrastructures, and building a more connected,
resilient, and sustainable world.




About Nexans

For over a century, Nexans has played a crucial role in the electrification of the planet and is committed
to electrifying the future. With approximately 28,500 people in 41 countries, the Group is paving the way
to a new world of safe, sustainable and decarbonized electricity that is accessible to everyone. In 2024,
Nexans generated €7.1 billion in standard sales. The Group is a leader in the design and manufacturing
of cable systems and services across four main business areas: PWR-Transmission, PWR-Grid, PWR-
Connect and Industry & Solutions. Nexans was the first company in its industry to create a Foundation
supporting sustainable initiatives, bringing access to energy to disadvantaged communities worldwide.
The Group is recognized as a global leader on climate action and has committed to Net-Zero emissions
by 2050 aligned with the Science Based Targets initiative (SBTi).

Nexans. Electrify the Future.

Nexans is listed on Euronext Paris, compartment A.
For more information, please visit www.nexans.com

Contacts:

Communication Investor relations

Mael Evin (Havas Paris) Audrey Bourgeois
Tel.: +33 (0)6 44 12 14 91 Tel.: +33 (0)1 78 15 00 43
nexans_h@havas.com audrey.bourgeois@nexans.com

Olivier Daban
Olivier.daban@nexans.com
Emmanuelle Guy
Emmanuelle.guy@nexans.com