Downhole Cables Companies

*Disclaimer: List of key companies in no particular order

Latest Company Updates:

May 2023

TenneT has given contracts to NKT, Nexans, and a group comprising Jan De Nul, LS Cable, and Denys to install 525 kV HVDC cable systems for ten offshore wind projects in Germany and the Netherlands. The links for Nederwiek 3, which will land at either Geertruidenberg or Moerdijk, as well as the connections for Doordewind 1 and Doordewind 2, which will land at Eemshaven in the Netherlands, will be realised by NKT.

A contract has been granted to Nexans for the cable connections of Lower Saxony's LanWin2 and Wilhelmshaven's BalWin3 and LanWin4, as well as the Heide area of Schleswig-Holstein, Germany's LanWin2.

The original estimate is EUR 1.7 billion, and once the project-specific call-offs are signed, significant subcontracted tasks will be added. Over 2,160 km of subsea and land cables will require full engineering, procurement, construction, and installation (EPCI) by the French cable manufacturer.

May 2023

A new variety of low-carbon distribution grid cables, the first on the French market, has been introduced by the French cable and fibre optic manufacturer Nexans. With the company's new strategy, depending on the product, the greenhouse gas emissions of its low- and medium-voltage cables are reduced by 35–50%.

Currently, the production of one km of electrical network wire produces two to three times as much CO2 as the average French citizen's annual emissions. The primary source of these emissions is the aluminium conductor, which alone is responsible for between 70 and 90 percent of the entire footprint. Plastics, transportation, and the manufacturing process come next.

Top listed global companies in the industry are:

• Halliburton (US)


• Prysmian Group (Italy)


• Schlumberger Limited (US)


• Fujikura Ltd (Japan)


• ABB (Switzerland)


• Galaxy Wire & Cable, Inc. (US)


• Belden Inc. (US)


• L. Gore & Associates, Inc. (US)


• Nexans (France)


• Marmon Holdings, Inc (US)


• WireCo WorldGroup Inc (US)


• NKT A/S (Denmark, Eland Cables (UK)


• GEO Pressure Systems Inc (Canada)


• TE Connectivity (Switzerland), and others.