Elewit, Redeia, Tecnalia, and Reintel collaborate on 50 km quantum communications link for smart grid cybersecurity

Elewit, the technology platform of Redeia, partnered with the Basque technology center Tecnalia and Reintel, the telecommunications infrastructure provider, to successfully test a 50-kilometer quantum communications link over fiber optics connecting subestations in Itsaso (Gipuzkoa) and Vitoria (Álava). The project validates quantum key distribution (QKD) technology for securing smart grids against cyber threats, demonstrating stable operation in industrial environments with electromagnetic interference. The trial builds on a 2023 pilot that achieved a 1-kilometer quantum link, confirming scalability and reliability for real-world grid applications. The collaboration was supported by Basque government programs Elkartek and Azpitek, as well as Spain’s Quantum Communication Complementary Plan under the Next Generation EU recovery funds. This initiative positions Spain as a leader in quantum-secured critical infrastructure, addressing vulnerabilities in increasingly digitalized power networks.

Counterparts (4)

Developer

E

Elewit

company

Partner

TECNALIA

company

TECNALIA is a leading European research and technology center based in Derio, Spain, with a team of 1,000 experts. It focuses on developing innovative solutions across energy transition, digital transformation, sustainable industry, and smart cities, contributing to advanced infrastructure technologies globally.

parent_company

Redeia

company

Redeia, formerly Red Eléctrica de España (REE), operates the Spanish electricity grid and is involved in telecommunications infrastructure. The company focuses on ensuring the security and reliability of the electricity supply, promoting the integration of renewable energy sources, and developing efficient grid infrastructure.

supplier

R

Reintel

company