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South Korea Submarine Power Cable Market

ID: MRFR/EnP/53054-HCR
200 Pages
Sejal Akre
February 2026

South Korea Submarine Power Cable Market Research Report By Type (AC, DC), By Core Type (Single Core, Multi-Core), By Insulation Type (Cross-Linked Polyethylene (XLPE), Ethylene Propylene Rubber (EPR)), By Voltage (Up to 66 KV, 66 KV-220 KV, Above 220 KV), By Conductor Material (Copper, Aluminum) and By End-Use (Offshore Wind Power Generation, Offshore Oil & Gas, Island Connection, Wave & Tidal Power Generation) - Growth & Industry Forecast to 2035

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South Korea Submarine Power Cable Market Infographic
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South Korea Submarine Power Cable Market Summary

As per Market Research Future analysis, the South Korea submarine power-cable market size was estimated at 575.92 $ Million in 2024. The South Korea submarine power-cable market is projected to grow from 630.34 $ Million in 2025 to 1554.3 $ Million by 2035, exhibiting a compound annual growth rate (CAGR) of 9.4% during the forecast period 2025 - 2035

Key Market Trends & Highlights

The South Korea submarine power-cable market is poised for growth driven by renewable energy initiatives and technological advancements.

  • The market experiences rising demand for renewable energy, particularly in the offshore wind sector.
  • Technological advancements in cable design enhance efficiency and reliability, contributing to market expansion.
  • Government initiatives and investments are fostering a favorable environment for submarine power-cable projects.
  • Key market drivers include increasing energy needs and a focus on energy security, which are propelling investments in offshore renewable projects.

Market Size & Forecast

2024 Market Size 575.92 (USD Million)
2035 Market Size 1554.3 (USD Million)
CAGR (2025 - 2035) 9.45%

Major Players

Nexans (FR), Prysmian Group (IT), General Cable (US), Subsea 7 (GB), Siemens (DE), ABB (CH), JDR Cable Systems (GB), LS Cable & System (KR)

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South Korea Submarine Power Cable Market Trends

The submarine power-cable market is currently experiencing notable growth, driven by the increasing demand for renewable energy sources and the need for efficient energy transmission. South Korea's commitment to expanding its offshore wind energy capacity has led to a surge in investments in submarine power-cable infrastructure. This trend is further supported by government initiatives aimed at enhancing energy security and reducing carbon emissions. As a result, the market is witnessing advancements in technology, which are improving the efficiency and reliability of submarine cables. Moreover, the strategic geographical positioning of South Korea facilitates the development of interconnections with neighboring countries, enhancing regional energy cooperation. The government is actively promoting the integration of submarine power cables into its energy strategy, which is likely to bolster the market's growth. The increasing focus on sustainable energy solutions and the need for robust energy networks are expected to drive further investments in this sector, indicating a promising outlook for the submarine power-cable market in the coming years.

Rising Demand for Renewable Energy

The submarine power-cable market is witnessing a surge in demand due to the increasing focus on renewable energy sources. South Korea's ambitious plans for offshore wind farms necessitate the deployment of advanced submarine cables to connect these facilities to the mainland grid. This trend reflects a broader shift towards sustainable energy solutions.

Technological Advancements

Innovations in cable technology are transforming the submarine power-cable market. Enhanced materials and manufacturing processes are leading to cables that are more efficient and durable. These advancements are crucial for meeting the growing energy demands and ensuring reliable power transmission over long distances.

Government Initiatives and Investments

The South Korean government is actively investing in submarine power-cable infrastructure as part of its energy strategy. Initiatives aimed at improving energy security and reducing greenhouse gas emissions are driving funding towards the development of submarine cables, which are essential for connecting renewable energy sources to the grid.

South Korea Submarine Power Cable Market Drivers

Increasing Energy Needs

The growing energy demands in South Korea are driving the submarine power-cable market. As urbanization and industrialization continue to expand, the need for reliable and efficient energy transmission becomes paramount. The country's energy consumption is projected to rise by approximately 2.5% annually, necessitating enhanced infrastructure. Submarine power cables play a crucial role in connecting offshore renewable energy sources, such as wind farms, to the mainland grid. This integration is vital for meeting the increasing energy requirements while ensuring stability in supply. The submarine power-cable market is thus positioned to benefit from this upward trend, as investments in infrastructure are likely to increase to accommodate future energy needs.

Focus on Energy Security

Energy security remains a critical concern for South Korea, influencing the submarine power-cable market. The country relies heavily on imported fossil fuels, making it vulnerable to supply disruptions. To mitigate this risk, South Korea is investing in diverse energy sources, including offshore wind and solar power. The government aims to increase the share of renewable energy in the energy mix to 20% by 2030. Submarine power cables are essential for connecting these renewable sources to the grid, enhancing energy security. The submarine power-cable market is expected to see growth as the government prioritizes projects that bolster energy independence and reliability.

Investment in Offshore Renewable Projects

Investment in offshore renewable energy projects is a significant driver for the submarine power-cable market. South Korea has ambitious plans to expand its offshore wind capacity, targeting 12 GW by 2030. This expansion necessitates the deployment of submarine power cables to transmit generated electricity to the grid. The submarine power-cable market is poised for growth as both public and private sectors invest heavily in these projects. The financial commitment to offshore renewable initiatives indicates a robust market outlook, as the need for efficient energy transmission solutions becomes increasingly critical in achieving national energy goals.

Technological Innovations in Cable Design

Technological advancements in cable design and materials are influencing the submarine power-cable market. Innovations such as improved insulation materials and enhanced cable durability are enabling longer transmission distances and higher capacity. These developments are crucial for connecting remote offshore energy sources to the mainland grid. The submarine power-cable market is likely to benefit from these innovations, as they reduce installation and maintenance costs while increasing efficiency. As technology continues to evolve, the market may see a rise in demand for advanced submarine cables that can withstand harsh marine environments, further driving growth.

Environmental Regulations and Sustainability

The push for sustainability and adherence to environmental regulations are shaping the submarine power-cable market. South Korea has committed to reducing greenhouse gas emissions by 37% by 2030, which necessitates a transition to cleaner energy sources. Submarine power cables facilitate the integration of renewable energy into the grid, aligning with these environmental goals. The market is likely to experience growth as companies seek to comply with stringent regulations while investing in sustainable technologies. This trend indicates a shift towards eco-friendly solutions, where submarine power cables serve as a vital link in the transition to a low-carbon economy.

Market Segment Insights

By Type: Single Core (Largest) vs. Multi-Core (Fastest-Growing)

In the South Korea submarine power-cable market, the distribution of market share reveals that Single Core cables hold a substantial portion, making them the largest within this segment. Their ability to cater to various applications and their established reliability contribute to their dominant position in the market. Conversely, Multi-Core cables, while currently smaller in share, are gaining traction due to their versatility and efficiency in handling complex power distribution needs. Growth trends indicate that the demand for Multi-Core cables is on the rise, driven by advancements in renewable energy projects and increased investments in offshore wind farms. The industry's push towards more efficient and reliable energy solutions fosters an environment where Multi-Core cables can thrive, making them the fastest-growing segment as they meet modern requirements for cable flexibility and ease of installation.

Cable Type: Single Core (Dominant) vs. Multi-Core (Emerging)

Single Core cables are recognized for their robust performance and are predominantly used in various underwater installations, ensuring reliable energy transmission over long distances. Their straightforward design allows for easier installation and maintenance, making them a preferred choice for traditional submarine applications. In contrast, Multi-Core cables are emerging as an innovative solution, designed to facilitate complex electrical systems. They offer multiple channels for electrical conductance, enhancing efficiency in energy distribution. The growing emphasis on renewable energy projects and the need for more sophisticated underwater power solutions bolster the position of Multi-Core cables, highlighting their potential in the evolving market landscape.

By Insulation Type: Cross-linked polyethylene (XLPE) (Largest) vs. Ethylene propylene rubber (EPR) (Fastest-Growing)

In the South Korea submarine power-cable market, the insulation type segment is primarily dominated by cross-linked polyethylene (XLPE), which holds a significant market share due to its superior thermal resistance and electrical properties. XLPE has established itself as the preferred choice among manufacturers, offering enhanced durability and performance, which has contributed to its leading position in submarine cable applications. On the other hand, ethylene propylene rubber (EPR) has been gaining traction and is regarded as the fastest-growing segment in this market. Its flexibility and resistance to environmental factors make it increasingly popular in specific applications. The growth trends in this segment are driven by the rising demand for high-performance insulation materials to support the development of advanced submarine cable systems. The increasing focus on renewable energy sources and the need for efficient power transmission solutions are propelling the adoption of both XLPE and EPR. While XLPE continues to dominate due to its established advantages, EPR is emerging as a viable alternative, particularly in projects that require adaptable and resilient insulation solutions.

Insulation Type: XLPE (Dominant) vs. EPR (Emerging)

Cross-linked polyethylene (XLPE) is known for its excellent electrical insulating properties and high thermal resistance, making it the dominant insulation type in the South Korea submarine power-cable market. It effectively supports high-voltage applications and provides increased durability against environmental stresses. As a result, XLPE is favored for long-term underwater installations. Conversely, ethylene propylene rubber (EPR) presents itself as an emerging option, characterized by its flexibility and superior moisture resistance. EPR is particularly suited for dynamic applications where adaptability is essential. Its growing acceptance is largely due to advancements in material technology, allowing it to compete effectively against XLPE, especially in specific project requirements.

By Conductor Material: Copper (Largest) vs. Aluminum (Fastest-Growing)

In the South Korea submarine power-cable market, Copper remains the largest segment, commanding a significant share due to its superior electrical conductivity and reliability. As a well-established conductor material, Copper is favored for various applications in the maritime energy sector, maintaining a dominant position amidst growing competition from alternatives. Aluminum, although currently smaller in market share compared to Copper, is emerging rapidly as the fastest-growing segment. The increasing demand for lightweight and cost-effective solutions in submarine power cables is driving the adoption of Aluminum. With technological advancements and enhanced properties, Aluminum's appeal is set to strengthen, particularly in new projects focusing on sustainability and efficiency.

Conductor Material: Copper (Dominant) vs. Aluminum (Emerging)

Copper is recognized as the dominant conductor material within the South Korea submarine power-cable market, primarily due to its exceptional conductivity, durability, and extensive historical usage in power transmission. Its characteristics make it an ideal choice for ensuring minimal energy loss and high performance in underwater applications. In contrast, Aluminum is the emerging player in this segment, showcasing advantages such as lower weight and cost, which are increasingly important in the design of submarine power systems. Aluminum's growing presence is supported by ongoing innovations that improve its electrical and mechanical properties, making it an attractive option for both new and retrofitting projects.

By End Use: Offshore Wind Power Generation (Largest) vs. Island Connection (Fastest-Growing)

The South Korea submarine power-cable market showcases diverse end-use applications, with Offshore Wind Power Generation holding the largest market share, driven by the country's commitment to renewable energy. In contrast, Island Connection is gaining traction, contributing to a notable share in the overall market, as demand for energy connectivity among islands increases. Growth trends indicate that Offshore Wind Power Generation is bolstered by government initiatives, technological advancements, and increasing investments in green energy. Meanwhile, Island Connection, marked as the fastest-growing segment, is propelled by the need for reliable energy supply to remote locations, further stimulated by projects focused on renewable energy integration, fostering a sustainable energy future.

Offshore Wind Power Generation (Dominant) vs. Island Connection (Emerging)

Offshore Wind Power Generation stands out as the dominant segment within the South Korea submarine power-cable market, characterized by large-scale projects that tap into the region's strong wind resources. This segment is well-supported by governmental policies aimed at enhancing renewable energy output. On the other hand, Island Connection, while currently emerging, exhibits rapid growth potential owing to the escalating requirements for energy supply solutions among islands. This emerging segment is highly critical for linking isolated energy grids, thus ensuring energy security and enabling the integration of renewable sources, establishing a robust energy infrastructure.

By Voltage: Up to 66 KV (Largest) vs. Above 220 KV (Fastest-Growing)

In the South Korea submarine power-cable market, the voltage segment displays a diverse distribution of market share across its values. The 'Up to 66 KV' segment holds the largest share, benefiting from widespread adoption in smaller renewable and offshore energy projects. Conversely, the '66 KV-220 KV' and 'Above 220 KV' segments are emerging, although they collectively command a smaller market share. The increasing demand for higher capacity cables is propelling growth in the latter segments, particularly the 'Above 220 KV' category, which is rapidly gaining traction due to its association with major infrastructure developments. The growth dynamics within the voltage segment are intricately linked to the broader trends in renewable energy and offshore wind farms in the region. Companies are investing significantly in advanced technologies to improve efficiency and capacity in higher voltage segments. Such projects demand robust and reliable submarine cables that can handle increased power loads, particularly in the 'Above 220 KV' segment, which is seen as the fastest-growing due to its pivotal role in connecting offshore renewable energy sources to the grid. Government policies supporting sustainable energy solutions are further enhancing the investment landscape.

Voltage: Up to 66 KV (Dominant) vs. Above 220 KV (Emerging)

The 'Up to 66 KV' segment stands as the dominant force in the South Korea submarine power-cable market, characterized by its application in various smaller-scale offshore energy projects. This voltage range is favored for its reliability and cost-effectiveness, making it a go-to choice for both commercial and governmental projects. Conversely, the 'Above 220 KV' segment is emerging rapidly, positioned as the future of large-scale energy transmission. It caters to major infrastructure projects, including offshore wind farms, which require high-capacity cables that can manage substantial power loads. The growing focus on renewable energy sources in South Korea is pushing the demand for higher voltage solutions, signaling a robust shift toward the 'Above 220 KV' category as energy needs continue to evolve.

Get more detailed insights about South Korea Submarine Power Cable Market

Key Players and Competitive Insights

The submarine power-cable market in South Korea is characterized by a competitive landscape that is increasingly shaped by technological advancements and strategic partnerships. Key players such as Nexans (FR), Prysmian Group (IT), and LS Cable & System (KR) are actively pursuing innovation and regional expansion to enhance their market positions. These companies appear to be focusing on developing high-capacity cables and sustainable solutions, which are critical in meeting the growing demand for renewable energy sources and interconnectivity in the region. Their collective strategies suggest a trend towards a more integrated and technologically advanced market environment. In terms of business tactics, localizing manufacturing and optimizing supply chains are becoming essential for companies to remain competitive. The market structure seems moderately fragmented, with several players vying for market share. However, the influence of major companies like ABB (CH) and Siemens (DE) is significant, as they leverage their global presence and technological expertise to set industry standards. This competitive dynamic encourages innovation and drives improvements in product offerings and service delivery. In October 2025, Prysmian Group (IT) announced the launch of a new submarine cable manufacturing facility in South Korea, aimed at increasing production capacity for high-voltage direct current (HVDC) cables. This strategic move is likely to enhance their ability to meet the rising demand for renewable energy projects in the region, positioning them as a key player in the transition to sustainable energy solutions. The establishment of this facility underscores the importance of local production capabilities in reducing lead times and improving supply chain efficiency. In September 2025, LS Cable & System (KR) secured a contract for the installation of submarine cables for a major offshore wind farm project. This contract not only reinforces their position in the renewable energy sector but also highlights their commitment to supporting South Korea's ambitious energy transition goals. The successful execution of such projects could potentially enhance their reputation and lead to further opportunities in the growing offshore wind market. In August 2025, Siemens (DE) entered into a strategic partnership with a local South Korean firm to co-develop advanced cable technologies. This collaboration is indicative of a broader trend towards strategic alliances that aim to leverage local expertise and accelerate innovation. Such partnerships may facilitate the development of next-generation submarine cables that are more efficient and environmentally friendly, aligning with global sustainability goals. As of November 2025, the competitive trends in the submarine power-cable market are increasingly defined by digitalization, sustainability, and the integration of artificial intelligence (AI) in manufacturing processes. Strategic alliances are shaping the landscape, enabling companies to pool resources and expertise to drive innovation. The shift from price-based competition to a focus on technological advancement and supply chain reliability is evident, suggesting that future competitive differentiation will hinge on the ability to innovate and deliver sustainable solutions.

Key Companies in the South Korea Submarine Power Cable Market include

Industry Developments

Recent developments in the South Korea submarine power cable market have been significant, with Samsung Heavy Industries and LS Cable and System leading advancements in underwater technology. In August 2023, Korea Electric Power Corporation announced a partnership with Daewoo Shipbuilding and Marine Engineering to develop eco-friendly submarine cables, responding to the growing demand for renewable energy solutions. Additionally, the market has seen notable activity from Nexans and Prysmian Group, which are expanding production capacities to meet increasing orders for offshore wind power connections.

Recent mergers and acquisitions have shaped the landscape, particularly with Iljin Electric acquiring a majority stake in a local competitor in September 2023, symbolizing consolidation in the industry. Market valuations are trending upward due to the growing investment in offshore energy projects, with Hyundai Heavy Industries reporting a 20% increase in their submarine cable segment revenues from Q2 2022 to Q2 2023. Furthermore, government initiatives to enhance the country’s power grid infrastructure have provided strong support for growth in this sector.

These developments reflect the dynamic environment in South Korea's submarine power cable market, driven by both technological innovation and strategic partnerships.

 

Future Outlook

South Korea Submarine Power Cable Market Future Outlook

The Submarine Power Cable Market in South Korea is projected to grow at a 9.45% CAGR from 2025 to 2035, driven by renewable energy expansion, technological advancements, and increased offshore wind projects.

New opportunities lie in:

  • Development of advanced cable-laying vessels for efficient installation. Investment in R&D for high-capacity, low-loss cable technologies. Partnerships with renewable energy firms for integrated power solutions.

By 2035, the submarine power-cable market is expected to be robust, driven by innovation and strategic partnerships.

Market Segmentation

South Korea Submarine Power Cable Market Type Outlook

  • Single Core
  • Multi-Core

South Korea Submarine Power Cable Market End Use Outlook

  • Offshore Wind Power Generation
  • Offshore Oil & Gas
  • Island Connection
  • Wave & Tidal Power Generation

South Korea Submarine Power Cable Market Voltage Outlook

  • Up to 66 KV
  • 66 KV-220 KV
  • Above 220 KV

South Korea Submarine Power Cable Market Insulation Type Outlook

  • Cross-linked polyethylene (XLPE)
  • Ethylene propylene rubber (EPR)

South Korea Submarine Power Cable Market Conductor Material Outlook

  • Copper
  • Aluminum

Report Scope

MARKET SIZE 2024 575.92(USD Million)
MARKET SIZE 2025 630.34(USD Million)
MARKET SIZE 2035 1554.3(USD Million)
COMPOUND ANNUAL GROWTH RATE (CAGR) 9.45% (2025 - 2035)
REPORT COVERAGE Revenue Forecast, Competitive Landscape, Growth Factors, and Trends
BASE YEAR 2024
Market Forecast Period 2025 - 2035
Historical Data 2019 - 2024
Market Forecast Units USD Million
Key Companies Profiled Nexans (FR), Prysmian Group (IT), General Cable (US), Subsea 7 (GB), Siemens (DE), ABB (CH), JDR Cable Systems (GB), LS Cable & System (KR)
Segments Covered Type, Insulation Type, Conductor Material, End Use, Voltage
Key Market Opportunities Growing demand for renewable energy integration drives innovation in submarine power-cable market technologies.
Key Market Dynamics Rising demand for renewable energy drives investment in submarine power-cable infrastructure and technology advancements.
Countries Covered South Korea
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FAQs

What is the projected market value of the South Korea Submarine Power Cable Market in 2024?

The projected market value of the South Korea Submarine Power Cable Market in 2024 is approximately 477.75 million USD.

What will be the estimated market size of the South Korea Submarine Power Cable Market by 2035?

The estimated market size of the South Korea Submarine Power Cable Market by 2035 is expected to reach around 1652.0 million USD.

What is the expected compound annual growth rate (CAGR) for the South Korea Submarine Power Cable Market from 2025 to 2035?

The expected CAGR for the South Korea Submarine Power Cable Market from 2025 to 2035 is 11.939%.

Which type of submarine power cable is projected to hold the larger market share in 2035?

In 2035, the DC type of submarine power cable is projected to hold a larger market share at approximately 992.0 million USD.

What is the anticipated market value for AC submarine power cables in 2035?

The anticipated market value for AC submarine power cables in 2035 is around 660.0 million USD.

Who are the major players in the South Korea Submarine Power Cable Market?

Major players in the South Korea Submarine Power Cable Market include Samsung Heavy Industries, LS Cable & System, Iljin Electric, and Hyundai Heavy Industries.

What opportunities are driving the growth of the South Korea Submarine Power Cable Market?

The growth of the South Korea Submarine Power Cable Market is driven by increasing demand for renewable energy and advancements in submarine cable technology.

How does the South Korea Submarine Power Cable Market reflect global trends in energy production?

The South Korea Submarine Power Cable Market reflects global trends by focusing on renewable energy sources and interconnecting energy grids.

What challenges does the South Korea Submarine Power Cable Market face?

Challenges in the South Korea Submarine Power Cable Market include high installation costs and environmental regulations affecting cable laying activities.

What impact do ongoing regional developments have on the South Korea Submarine Power Cable Market?

Ongoing regional developments are likely to enhance infrastructure projects, boosting the South Korea Submarine Power Cable Market's growth.

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