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Prysmian and NKT secure SuedOstLink contracts

4C Offshore | Tom Russell
By: Tom Russell 05/05/2020 Prysmian and NKT
Prysmian Group and NKT have been awarded contracts by TenneT TSO GmbH and 50 Hetz for the SuedOstLink project in Germany, one of the longest HVDC (High Voltage Direct Current) underground cable connections.

Prysmian secured a contract from TenneT TSO GmbH valued at approximately €500 million, for the design, manufacture, supply, lay, joint, test and commission a 2GW underground cable system. The company will deliver a ±525 kV HVDC underground cable system combined with large copper conductor cables and Prysmian own developed innovative P-Laser insulation technology. The company stated that it is capable of operating at a higher temperature, to enable a transmittable power of more than 2GW on a single system for the first time.


The route, with a length of over 250 km, starts at the Southern Germany connection point at Isar, close to Landshut in Bavaria. Prysmian will provide all related accessories, as well as an integrated PRY-CAM monitoring system. Project completion is planned in early 2026.


NKT also secured a turnkey contract, valued at approximately €500 million, from 50Hertz. The contract comprises supply and installation of a 525 kV XLPE high-voltage DC (direct current) onshore cable solution for a significant portion of the SuedOstLink transmission line in route lengths of approx. 275 km. NKT expects to start production of  the 525 kV XLPE high-voltage DC cable and accessories end-2021 with installation in mid-2022 and with final completion in 2025.

The SuedOstLink is a joint project of 50Hertz and TenneT. It is being developed to transmit wind energy in the north of Germany to southern Germany were the phase out nuclear energy is being executing over the coming years. The SuedOstLink is planned to be in operation by 2025 and cover 580 kilometers.


The SuedOstLink project holds status of a project of common interest (PCI) and is co-financed by the European Union's Connecting Europe Facility. The project is the first of three long-distance power transmission lines in Germany to transport renewable energy from the Northern parts of the country to the South. These transmissions lines are often referred to as the HVDC corridor projects covering a large proportion of the country and they are key to realize the ‘Energiewende’, Germany’s long-term strategy for switching to renewable energies by 2050.


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