High Voltage Onshore DC Cables

Ideal for long-distance power transmission

High voltage underground cable installation in Sweden

High voltage DC (Direct Current) cables are ideal for efficient, long-distance power transmission and advantageous for densely populated, or environmentally sensitive areas.

Underground cables can interconnect remote locations across countries cost-efficiently and enable secure and stabilizing grid connections. By connecting underground DC cables to submarine cables, renewable energy generated offshore can be transmitted efficiently to the mainland grid.

NKT is one of the pioneers and market leaders providing complete DC underground cable systems up to the highest voltage levels.

640 kV XLPE – a global innovation

640 kV extruded DC cable system is the latest result of our intensive investment in research and development in the field of HVDC transmission technology. It sets a new world record for extruded HVDC cable technology enabling the integration of renewable power and connecting energy markets.

The first qualified 525 kV DC system

The 525 kV extruded DC cable system was launched in 2014 and doubled the power transmission capabilities at that time over longer distances.

HVDC cable system leave no visible footprint in the landscape after installation underground

Extruded and mass-impregnated cables

We provide HVDC underground cables with two different insolation systems: Mass-impregnated (MI) and the extruded, cross-linked polyethylene (XLPE). Both solutions are qualified in accordance with industry recommendations and are well-proven on-site for many years now.

A DC cable system uses specially designed accessories, special-purpose prefabricated joints and terminations to facilitate the installation process, thus making it more efficient.

High Voltage Onshore DC Cables

Unique DC onshore projects

Our high voltage DC onshore cable systems are already widely used, and are featured in many high-level projects, such as the GotLight and the Murray Link project.

High voltage cable installation in Germany

Related products and solutions

Learn more about our versatile portfolio

High Voltage City Cables

For new installations, the City cables provides economical and safe installation of new equipment in densely populated cities.

High Voltage Onshore AC Cables

High voltage AC (HVAC) onshore cable systems replace conventional overhead lines and enable installations in challenging environments.

High Voltage Offshore DC Cables

Our high voltage DC offshore cable systems enable efficient long-distance transmission at high power levels, interconnecting regions and countries and electrified oil and gas platforms.

Onshore Installation

We provide expertise to underground cable installations for various industries and conditions, and our in-house capability offers all the engineering work needed for a turnkey installation.

Our References

Read more about our projects

HVDC Turnkey Project for Johan Sverdrup oil field

High Voltage Cable solutions

Turnkey Solution

CIS - our complete power cable system offer.

Working safely with Qaddy®

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Contact at NKT

Find the right NKT contacts for your region here.

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