Why are partnerships between cable manufacturers and marine contractors becoming so common?

The subsea cable market is facing severe capacity constraints in both manufacturing and specialized installation vessels. By forming strategic alliances, companies can offer developers a seamless, turnkey EPCI solution, reducing project interface risks and securing scarce vessel slots ahead of competitors.

What makes HVDC technology so critical for modern offshore energy projects?

HVDC technology is highly efficient for transmitting large amounts of electricity over very long distances with minimal power loss compared to traditional Alternating Current (AC) systems. This makes it the only viable solution for deepwater subsea interconnectors and far-shore wind farms.

How does this agreement affect the wider offshore wind and interconnector supply chain?

This agreement introduces a highly competitive, integrated player into a market currently struggling with supply bottlenecks. By combining South Korean manufacturing scale with European maritime expertise, it helps alleviate the global shortage of cable-laying capacity and could help accelerate project timelines globally.

Offshore Energy · June 11, 2026 (Jun 11) · 1 min read

Taihan Cable signs HVDC cooperation agreements with Jan De Nul and Boskalis

Analysis

AI-assisted analysis · reviewed by Yuri Kan

South Korea's Taihan Cable & Solution has strategically aligned with maritime heavyweights Jan De Nul and Boskalis through new memoranda of understanding to collaborate on high-voltage direct current (HVDC) cable projects. This partnership addresses the critical global bottleneck in offshore wind and subsea interconnector supply chains by combining Taihan's manufacturing capabilities with the marine installation expertise of two of Europe's leading offshore contractors. The alliance positions the consortium to capture a significant share of the rapidly expanding global subsea transmission market, which is currently constrained by limited vessel availability and cable manufacturing capacity.

Key Facts

South Korean cable manufacturer Taihan Cable & Solution signed separate memoranda of understanding (MOUs) with Belgian marine engineering firm Jan De Nul and Dutch offshore contractor Boskalis.
The cooperation agreements focus on joint bidding and execution of turnkey high-voltage direct current (HVDC) subsea cable projects globally.
Taihan Cable is currently expanding its production capacity with a dedicated submarine cable plant in Dangjin, South Korea, aimed at manufacturing long-length HVDC cables.
Jan De Nul and Boskalis bring specialized offshore construction fleets, including state-of-the-art cable-laying vessels (CLVs) capable of operating in deepwater and challenging marine environments.
The agreements are designed to offer developers a fully integrated, turnkey engineering, procurement, construction, and installation (EPCI) solution for subsea power transmission.
This strategic move comes amid a global surge in offshore wind farm developments and cross-border grid interconnectors requiring deepwater HVDC technology.

Background & Context

The global transition to renewable energy has triggered an unprecedented demand for subsea HVDC cables, which are essential for transmitting power from offshore wind farms to mainland grids and linking national electricity networks. Historically, the subsea cable market has been dominated by a small oligopoly of European manufacturers, leading to severe supply chain bottlenecks and project delays. As countries push for greater energy security and grid integration, securing both cable manufacturing capacity and specialized cable-laying vessels has become a critical risk-mitigation strategy for offshore developers.

Market Impact

This collaboration significantly alters the competitive landscape of the subsea transmission sector by creating a powerful alternative to established European consortia. By locking in partnerships with Jan De Nul and Boskalis, Taihan Cable secures guaranteed access to world-class marine installation assets, which are currently in extremely short supply. For developers, this integrated approach reduces interface risks between cable manufacturing and offshore installation, potentially lowering project insurance costs and execution timelines. Furthermore, this alliance will intensify competition, which could help stabilize soaring EPCI costs in the offshore wind and interconnector markets.

What to Watch

The immediate next step will be the joint participation of these partners in upcoming tenders for major offshore wind and interconnector projects in Europe and the Asia-Pacific region. Industry observers should monitor the completion of Taihan's Dangjin submarine cable plant expansion, as its operational readiness will dictate the consortium's ability to deliver on high-capacity HVDC contracts. Additionally, the success of this alliance will likely spur rival cable manufacturers and marine contractors to form similar strategic joint ventures to secure market share.

Why This Matters for Cyprus

While this agreement is global in scope, it holds high relevance for the Eastern Mediterranean, where ambitious subsea interconnector projects like the Great Sea Interconnector (connecting Greece, Cyprus, and Israel) face immense technical and supply chain challenges. The region's extreme water depths require highly specialized cable-laying vessels and advanced HVDC technology, making the expanded capacity of consortia like Taihan-Boskalis-Jan De Nul crucial for the viable realization of Cyprus's energy isolation exit strategy.

Frequently Asked Questions

Why are partnerships between cable manufacturers and marine contractors becoming so common?: The subsea cable market is facing severe capacity constraints in both manufacturing and specialized installation vessels. By forming strategic alliances, companies can offer developers a seamless, turnkey EPCI solution, reducing project interface risks and securing scarce vessel slots ahead of competitors.
What makes HVDC technology so critical for modern offshore energy projects?: HVDC technology is highly efficient for transmitting large amounts of electricity over very long distances with minimal power loss compared to traditional Alternating Current (AC) systems. This makes it the only viable solution for deepwater subsea interconnectors and far-shore wind farms.
How does this agreement affect the wider offshore wind and interconnector supply chain?: This agreement introduces a highly competitive, integrated player into a market currently struggling with supply bottlenecks. By combining South Korean manufacturing scale with European maritime expertise, it helps alleviate the global shortage of cable-laying capacity and could help accelerate project timelines globally.

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