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High voltage offshore cables

Leading the way in high voltage submarine power cables and services

Offshore cables, for both AC and DC, play an important role in transforming our energy landscape. They enable offshore facilities to efficiently harness and transmit renewable energy, playing a crucial role in the shift toward cleaner power generation.
NKT’s submarine power cables are designed to meet the rigorous demands of offshore installations, ensuring uninterrupted power transmission for offshore wind farm projects and other critical subsea applications. We provide a comprehensive range of high voltage solutions, including: 
  • AC and DC offshore cable systems: Engineered for optimal performance in various offshore environments. 
  • High voltage direct current (HVDC) cable systems: Advanced technology for efficient long-distance power transmission. 

NKT’s extensive experience drives offshore cable innovation

We have been at the forefront of high voltage offshore cable systems for many years and pioneered the industry's first offshore HVDC link in 1954. Today, we continue to lead with innovation, becoming the first manufacturer to qualify and supply 525 kV cables for both MI and XLPE insulation technology. 

Reference map

Explore our largest offshore projects in a map

We deliver offshore cable solutions for a lifetime – and for generations to come
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Reference map NKT

High voltage offshore projects and complete solutions

NKT High voltage offshore

Why choose NKT? We know offshore cables!

Our offshore cables are engineered to provide superior performance, innovation, and reliability. Here are just a few examples of our completed offshore projects:

  • In 1954, we delivered the world’s first MI HVDC submarine cable - the 80 kV link between Sweden and Gotland 
  • In 1973 we delivered the world’s first extruded high voltage submarine AC cable between Sweden and the Åland Islands 
  • In 2007 we were first to launch a dynamic power-from-shore HVAC cable system, connecting the Gjøa floating oil and gas platform in the North Sea 
  • In 2013, we launched the world’s first and most powerful AC three-core 420 kV submarine cable, the link crossing the Little Belt strait 
  • In 2014, we introduced the record-breaking and innovative 525 kV extruded HVDC cable system 
  • The turnkey supplier of the world’s longest extruded cable, the NordBalt link, which consists of two 300 kV submarine cables, each 400 km long, and cables routes comprising 40 km on the Swedish side and 10 km on the Lithuanian side   
  • In 2019 we commissioned the world's longest HVAC cable connecting the Martin Linge oil and gas field to shore, a 163 km extruded three-core submarine cable 
NKT Victoria installing high voltage cable offshore

Find your right high voltage offshore product

Learn more about our versatile range of high voltage offshore cables and services

High voltage offshore AC cables

Our high voltage AC offshore cable systems support renewable energy transformation and are developed to optimum technical standards.

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.

High voltage dynamic cables

NKT dynamic cables are characterised by high fatigue endurance and are designed to withstand a lifetime of constant movement.

Lifecycle Cable Services

We offer cable services from installation up to decommissioning, coupled with cable monitoring and services for legacy cable systems.
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