Key Players
Competitive Landscape
Four supplier models compete in direct burial cables: integrated energy and telecom cable groups, high-voltage project specialists, North American distribution-cable producers and industrial broadband cable manufacturers. Their positions differ by voltage range, installation responsibility, regional production and the evidence available for soil exposure or field termination.
Investment and product development have moved in two directions since 2025, into full-route high-voltage EPC work and faster last-mile fiber installation. Nexans secured a May 2025 Swissgrid project covering 57 km of 220 kV cable for the Saint-Gotthard tunnel. Belden launched DiamonDrop in June 2026 for aerial, conduit and direct-burial FTTX drops used in last-mile networks where price remains relevant across comparable offers. Utilities and network contractors first compare qualification records plus installation responsibility and local route-specific support.
Company developments mapped to drivers, trends and opportunities (2026-2036)
| Development | Driver | Trend | Opportunity |
|---|---|---|---|
| Nexans secured the Saint-Gotthard tunnel project in May 2025 for 57 km of 220 kV cable, engineering, accessories and installation. | Swissgrid needs a protected north-south route that uses tunnel space instead of a new overhead corridor. | Transmission owners are combining cable routes with transport infrastructure to reduce land and permitting conflict. | Revenue sits in engineered cable packages that include accessories, installation and corridor-specific design. |
| Sumitomo Electric Industries began installing a 525 kV XLPE HVDC system for A-Nord in June 2025 across an approximately 300 km route. | Amprion requires long-distance underground transfer capacity with one contractor responsible for design, logistics, jointing and maintenance. | European HVDC awards increasingly combine manufacturing with multi-year EPC and local installation work. | Large corridor programs generate revenue for cable, joints, commissioning, maintenance and trained field crews. |
| Belden launched DiamonDrop in June 2026 for aerial, conduit and direct-burial FTTX drops with a peelable 900 µm buffered fiber. | Broadband crews need faster field preparation with less risk of damaging fiber during last-mile termination. | Access-network manufacturers are designing one drop cable for several placement methods and common connector practices. | Rural and hard-to-serve builds reward cable formats that reduce tools, preparation time and rework. |
Prysmian Group, Southwire, LS Cable & System, Furukawa Electric and NKT compete through transmission engineering, regional production, communication coverage and testing depth without repeating developments already covered in the main report.
Source: Future Market Insights, Direct Burial Fiber Optic Cable Market and Wire and Cable Market Reports, 2026-2036.
Prysmian Group and Sumitomo Electric Industries cover 420 kV and 525 kV underground systems with turnkey installation and maintenance. NKT adds high-voltage testing, while Prysmian Cables Spain lists ISO 9001:2015 registration and ENAC laboratory accreditation.
Who leads the direct burial cables market?
Among the profiled companies, Prysmian Group has the broadest verified combination of underground-system range and turnkey responsibility after its March 2025 Statnett agreement for 420 kV cables. Nexans competes through its Power Grid business and is scheduled to supply 57 km of 220 kV cable with engineering and installation for the Saint-Gotthard tunnel.
Which suppliers have documented qualification or quality approvals?
Prysmian Cables Spain lists ISO 9001:2015 registration and ENAC accreditation for its cable technology laboratory operations. NKT lists ISO 9001:2015 certificates for its Berlin, Cologne and Troisdorf locations and provides separate certificates by production site.
Which companies provide utility-distribution and FTTX cable products?
Southwire makes medium-voltage primary underground distribution cable for wet or dry settings with direct-burial installation. Belden supplies DiamonDrop for conduit and direct-burial FTTX drops, while Furukawa Electric covers optical cable and broadband systems for utilities and public infrastructure.
Which suppliers serve Europe and North America?
Nexans supports European projects from Charleroi and Cortaillod while NKT tests high-voltage systems at Karlskrona. Southwire manufactures underground utility cable in North America, and Belden reports manufacturing capabilities across North America, Europe, Asia and Africa.
Representative Company Overview
| Company | Positioning | Verified market-relevant capabilities |
|---|---|---|
| Prysmian Group | Global | 420 kV underground systems, accessories and turnkey installation for Statnett in Norway (March 2025). |
| Nexans | Global | 220 kV tunnel cable, accessories, engineering and installation with 57 km supplied for Saint-Gotthard (May 2025). |
| Southwire | North America | Medium-voltage and high-voltage underground cable with a 340,000-square-foot Heflin capacity expansion (November 2025). |
| Sumitomo Electric Industries | Asia, Europe and North America | 525 kV XLPE HVDC cable with design, logistics, installation, jointing, commissioning and maintenance for A-Nord (June 2025). |
| LS Cable & System | Asia, Europe and North America | Extra-high-voltage underground cable supply and turnkey construction for Singapore transmission work (April 2025). |
| Furukawa Electric | Asia, North America and Europe | Optical cable and broadband systems for utilities and public infrastructure under the Lightera structure launched in April 2025. |
| NKT | Europe and global projects | High-voltage cable systems, installation services and mechanical test capacity at Karlskrona (September 2025). |
| Belden | North America, Europe, Asia and Africa | PPC DiamonDrop single-fiber cable for aerial, conduit and direct-burial FTTX deployments (June 2026). |
Research Methodology
The companies in this section illustrate current market structure and do not form a ranking. A company appears where current evidence confirms direct-burial power cable, underground fiber cable or closely related installation and testing work. Evidence uses verified official company websites, product literature, filings, press releases and site-level certification records. Certification claims remain assigned to the specific entity or production location that holds each record. FMI estimates technology shares, including the 39.0% power cable figure that applies to the 2026 base year.
