Taihan to Make and Install Submarine Cables for South Korean Solar Power Plants

Why It Matters

The project enables efficient transmission of renewable energy from offshore and on‑shore solar farms, supporting South Korea’s clean‑energy targets and showcasing Taihan’s capability to deliver integrated submarine‑cable solutions internationally.

Key Takeaways

• Taihan supplies 154 kV submarine cables for Bigeum and Dogo solar plants
• Installation handled by Taihan Ocean Works, acquired July 2025
• Project links solar generation to Anjwa substation in Sinan County
• First collaboration between Taihan’s cable plant and its ocean‑works subsidiary
• Enhances Taihan’s global market positioning as a total‑solution provider

Pulse Analysis

South Korea’s push to expand renewable generation has turned attention to the logistical challenges of moving power from offshore and remote solar farms to the mainland grid. The Bigeum on‑shore plant and the Dogo floating solar installation together generate several hundred megawatts, but without high‑capacity transmission lines the electricity would face bottlenecks. By deploying 154 kV extra‑high‑voltage submarine cables, the project ensures low‑loss delivery to the Anjwa substation, a critical node that feeds the national network. This approach mirrors global trends where utilities favor submarine cable solutions to integrate distributed renewable assets efficiently.

Taihan Cable & Solution, a veteran in power‑cable manufacturing, is leveraging its Submarine Cable Plant 1 in Dangjin to produce the custom‑rated conductors for the Korean solar venture. The firm’s recent acquisition of Taihan Ocean Works in July 2025 adds a dedicated installation arm, allowing the company to offer end‑to‑end services from fabrication to seabed laying. The collaboration marks the first joint execution between the two units, showcasing Taihan’s strategy to become a total‑solution provider. With a portfolio that includes undersea telecom and offshore wind cables, Taihan is positioned to capture a larger share of the growing submarine‑cable market.

The contract signals a broader shift in the energy infrastructure landscape, where cable manufacturers are increasingly involved in project delivery rather than merely supplying components. For investors, Taihan’s ability to bundle manufacturing and installation reduces project risk and can accelerate timelines, a valuable proposition in a market hungry for clean‑energy capacity. Moreover, the success of this Korean solar link could serve as a template for similar offshore‑solar‑to‑grid connections across Asia and Europe, where space constraints and grid stability drive demand for high‑voltage submarine cables. As governments tighten emissions targets, firms that can provide integrated cable solutions are likely to see heightened demand.