Hellenic Cables signs an inter-array cable supply agreement with Vattenfall for the Norfolk Offshore Wind Zone

Brussels, 26 April 2023

Cenergy Holdings announces that Hellenic Cables, its cables segment, signed an agreement with Vattenfall to supply the inter-array cables for the Norfolk Offshore Wind Zone. Hellenic Cables will supply the Norfolk Offshore Wind Zone with approximately 850km of aluminum conductor cables which will link the wind turbines of each string and each string to the offshore substation, thus assisting to energize what will result in one of the largest offshore wind zones in the world.

Under this contract, Hellenic Cables will design, manufacture, test and supply the 66kV XLPE-insulated subsea inter-array cables and the associated accessories.

The cables will be produced at Hellenic Cables’ modern, vertically integrated submarine cables plant in Corinth, Greece.  Cable production will take place from 2025 to 2028 according to the project’s delivery time schedule.

The Norfolk Offshore Wind Zone will provide electricity to approximately 4.6 million homes, and upon its completion, it will be one of the largest offshore wind zones in the world.

Catrin Jung, Head of Offshore Wind at Vattenfall, stated: “We’re really pleased to be working with Hellenic Cables, who will be providing the inter array cables for our Norfolk Offshore Wind Zone. This is another important milestone for the project and Vattenfall’s mission for fossil fuel-free living within a generation.

Rob Anderson, Project Director of Vattenfall’s Norfolk Zone, said: “Offshore wind will help keep costs down for billpayers, reduce our reliance on expensive foreign gas, and help us to deliver net zero. The agreement with Hellenic Cables brings us another step closer to delivering one of the world’s largest offshore wind zones which will provide over 4.5 million UK homes with clean, low-cost power.

Kostas Savvakis, General Manager at Hellenic Cables, commented: “We are delighted that Vattenfall has renewed our collaboration and once again entrusted Hellenic Cables with supplying its high-quality cables to Norfolk, one of the world’s largest offshore wind zones.  We welcome the opportunity to work with Vattenfall once again and successfully execute this flagship project.

About Vattenfall

Vattenfall is a European energy company with approx. 20,000 employees.  For more than 100 years, it has electrified industries, supplied energy to people’s homes and modernised the way of living through innovation and cooperation.  It now wants to make fossil-free living possible within one generation.

About Cenergy Holdings

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.  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.  Hellenic Cables is one of the largest cable producers in Europe, manufacturing power and telecom cables as well as submarine cables for the aforementioned sectors.  For more information, please visit our website at


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