Hellenic Cables achieves qualification of its 525 kV HVDC XLPE cable systems for submarine and underground applications

Athens, 29 July 2026

Hellenic Cables, the cables segment of Cenergy Holdings, announces the successful qualification of its 525 kV HVDC XLPE cable systems for both submarine and underground applications, marking a significant technological milestone that further strengthens the company’s position among the leading suppliers of extra-high voltage cable solutions worldwide.

The qualification covers submarine and underground cable systems designed for continuous operation at 80°C using XLPE insulation technology.

The submarine system was qualified in accordance with CIGRE Technical Brochure 852, while the underground system complies with both CIGRE Technical Brochure 852 and IEC 62895, confirming the reliability and performance of the cable systems under the most demanding international testing requirements.

This qualification marks an important milestone for Hellenic Cables, expanding its capability to support major HVDC interconnection projects worldwide and further enhancing its position in the extra-high voltage cable market.

Kostas Savvakis, General Manager of Hellenic Cables, stated: “This successful qualification demonstrates our continued commitment to innovation and engineering excellence. It broadens our portfolio of advanced HVDC cable solutions, strengthens our position in the global market, and enables us to support our customers with reliable technologies for the next generation of power transmission projects.”

With over 70 years of success, Hellenic Cables is a leading provider of cables and turnkey solutions worldwide, servicing the markets of energy transmission and distribution, renewables and offshore wind, telecom and data networks, construction, and industry. The company operates state-of-the-art production facilities in Greece and Romania and is currently expanding with a new cable manufacturing plant in the USA. Since 2012, Hellenic Cables has executed an investment plan of more than EUR 800 million to upgrade its production sites, transforming them into world-class facilities. Hellenic Cables represents the cables segment of Cenergy Holdings S.A. For further information, please visit www.hellenic-cables.com.

Cenergy Holdings is a Belgian holding company listed on both Euronext Brussels and Athens Stock Exchange, investing in leading industrial companies, focusing on the growing global demand of energy transfer, renewables and data transmission. The Cenergy Holdings portfolio consists of Corinth Pipeworks and Hellenic Cables, companies positioned at the forefront of their respective high growth sectors. Hellenic Cables is one of the largest cable producers in Europe, manufacturing power and telecom cables as well as submarine cables. Corinth Pipeworks is a world leader in steel pipe manufacturing for the energy sector and major producer of steel hollow sections for the construction sector. For more information, please visit our website at www.cenergyholdings.com.