Submarine and land-based power cables - Submarine and land-based power cables enable interconnections between islands, offshore wind farms, and continental grids. Advancements in submarine cable technology are facilitating greater energy exchange and supporting global renewable energy development.

The market dynamics for submarine and land-based power cables are highly divergent. Land-based cables, forming the backbone of domestic grids, are primarily driven by local infrastructure replacement and the connection of new generation capacity. In contrast, submarine cables are a highly specialized segment, dominated by the interconnection of national grids (interconnectors) and the transmission of power from offshore renewable energy farms (such as wind) to the mainland. Submarine projects involve immense logistical complexity, specialized laying vessels, and a premium on long-term reliability due to the difficulty and cost of repair. Both segments are converging on High-Voltage Direct Current (HVDC) technology for high-capacity, long-distance projects, though the technical challenges and market players in the subsea domain are distinctly different from the land-based sector.

FAQ on Submarine and land-based power cables

What is the primary difference in project drivers for land-based versus submarine cables? Land cables are mainly driven by domestic grid upgrades and expansion, while submarine cables are predominantly driven by cross-border interconnections and offshore energy integration.

What makes the installation of submarine cables particularly challenging? Installation requires highly specialized vessels, advanced navigational planning, and must account for complex underwater terrain and environmental conditions.

What key feature must submarine cables possess due to their environment? Submarine cables must be engineered for extreme long-term mechanical protection and high reliability, given the immense difficulty and cost associated with accessing them for repair.