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Japan Submarine Power Cable Market

ID: MRFR/EnP/53056-HCR
200 Pages
Garvit Vyas
February 2026

Japan 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) andBy End-Use (Offshore Wind Power Generation, Offshore Oil & Gas, Island Connection, Wave & Tidal Power Generation)- Growth & Industry Forecast to 2035

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Japan Submarine Power Cable Market Infographic
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Japan Submarine Power Cable Market Summary

As per Market Research Future analysis, the Japan Submarine Power Cable Market size was estimated at 863.88 USD Million in 2024. The Submarine Power-cable market is projected to grow from 945.08 USD Million in 2025 to 2320.8 USD Million by 2035, exhibiting a compound annual growth rate (CAGR) of 9% during the forecast period 2025 - 2035

Key Market Trends & Highlights

The Japan submarine power-cable market is poised for growth driven by renewable energy investments and technological advancements.

  • The market is seeing increased investment in renewable energy, particularly in offshore wind farms.
  • Technological advancements in cable design are enhancing efficiency and reliability in power transmission.
  • Regulatory support and policy frameworks are fostering a conducive environment for market expansion.
  • Key drivers include the growing demand for energy security and government initiatives promoting offshore wind energy development.

Market Size & Forecast

2024 Market Size 863.88 (USD Million)
2035 Market Size 2320.8 (USD Million)
CAGR (2025 - 2035) 9.4%

Major Players

Nexans (FR), Prysmian Group (IT), General Cable (US), Sumitomo Electric Industries (JP), LS Cable & System (KR), ABB (CH), Siemens (DE), Telefónica (ES)

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Japan Submarine Power Cable Market Trends

The Japan Submarine Power Cable Market is currently experiencing notable growth. This growth is driven by the increasing demand for renewable energy sources and the need for efficient energy transmission. Japan's commitment to enhancing its energy infrastructure, particularly in offshore wind energy, plays a crucial role in this expansion. The government has set ambitious targets for renewable energy generation, which necessitates the development of advanced submarine cable systems to connect offshore wind farms to the mainland grid. This trend indicates a shift towards sustainable energy solutions, aligning with global efforts to reduce carbon emissions and combat climate change. Moreover, technological advancements in cable manufacturing and installation techniques are likely to enhance the efficiency and reliability of submarine power-cable systems. Innovations such as improved insulation materials and enhanced cable laying methods contribute to the overall performance of these systems. As Japan continues to invest in its energy transition, the submarine power-cable market appears poised for further growth, with potential opportunities for both domestic and international players. The focus on sustainability and technological progress suggests a dynamic landscape for stakeholders in this sector, as they adapt to evolving energy demands and regulatory frameworks.

Increased Investment in Renewable Energy

The submarine power-cable market is seeing increased investment as Japan prioritizes renewable energy projects. This trend is largely influenced by government initiatives aimed at expanding offshore wind capacity, which necessitates robust cable infrastructure to facilitate energy transmission.

Technological Advancements

Recent innovations in cable technology are transforming the submarine power-cable market. Enhanced materials and installation techniques are improving the efficiency and reliability of power transmission, making it more feasible to connect remote energy sources to urban centers.

Regulatory Support and Policy Frameworks

The regulatory environment in Japan is evolving to support the submarine power-cable market. Government policies aimed at promoting renewable energy and reducing carbon emissions are likely to create a favorable landscape for investment and development in this sector.

Japan Submarine Power Cable Market Drivers

Expansion of Offshore Wind Farms

The expansion of offshore wind farms significantly influences the submarine power-cable market in Japan. With the government targeting 10 GW of offshore wind capacity by 2030, the demand for submarine cables to transmit generated electricity to the mainland is expected to rise. This initiative aligns with Japan's commitment to reducing greenhouse gas emissions and transitioning to sustainable energy sources. The development of these wind farms necessitates advanced submarine cable technology to ensure efficient energy transmission over long distances. As a result, investments in submarine power-cable infrastructure are likely to increase, fostering innovation and competition within the market. The integration of these cables into the energy grid is crucial for achieving Japan's renewable energy goals.

Government Initiatives and Funding

Government initiatives and funding play a pivotal role in shaping the submarine power-cable market in Japan. The Japanese government has introduced various programs aimed at promoting renewable energy and enhancing energy infrastructure. Financial incentives, grants, and subsidies for submarine cable projects are designed to stimulate private sector investment. The government’s commitment to achieving carbon neutrality by 2050 further underscores the importance of developing a robust submarine power-cable network. By facilitating public-private partnerships, the government aims to accelerate the deployment of submarine cables, ensuring that the necessary infrastructure is in place to support the growing renewable energy sector. This proactive approach is likely to create a favorable environment for market growth.

Growing Demand for Energy Security

The submarine power-cable market in Japan is experiencing a notable surge in demand due to the increasing need for energy security. As Japan continues to diversify its energy sources, the reliance on renewable energy, particularly offshore wind, is becoming more pronounced. This shift necessitates robust infrastructure, including submarine cables, to connect remote energy generation sites to urban centers. The government has set ambitious targets for renewable energy, aiming for 36-38% of total energy generation by 2030. This transition is likely to propel investments in submarine power-cable projects, enhancing the market's growth prospects. Furthermore, the need to ensure a stable and reliable energy supply in the face of natural disasters further emphasizes the importance of developing resilient submarine cable networks.

Technological Innovations in Cable Design

Technological innovations in cable design are reshaping the submarine power-cable market in Japan. Advances in materials and manufacturing processes enhance the performance and reliability of submarine cables, making them more suitable for harsh marine environments. Innovations such as improved insulation materials and enhanced cable laying techniques contribute to increased efficiency and reduced installation costs. The market is witnessing a shift towards high-voltage direct current (HVDC) systems, which offer advantages in long-distance power transmission. As Japan invests in cutting-edge technology, the submarine power-cable market is likely to benefit from enhanced capabilities, enabling the integration of renewable energy sources into the national grid more effectively. This trend may lead to a more resilient and efficient energy infrastructure.

Increased Interconnection with Neighboring Countries

Increased interconnection with neighboring countries is emerging as a key driver for the submarine power-cable market in Japan. The country is exploring opportunities to enhance energy trade with regional partners, such as South Korea and Taiwan, through the development of submarine cable links. These interconnections can facilitate the exchange of renewable energy, contributing to energy security and stability in the region. The potential for cross-border electricity trade is expected to drive investments in submarine cable infrastructure, as Japan seeks to optimize its energy resources and reduce reliance on fossil fuels. This trend may lead to a more integrated energy market in East Asia, with Japan playing a central role in regional energy cooperation.

Market Segment Insights

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

In the Japan submarine power-cable market, the market share distribution reveals that Single Core cables hold a significant proportion due to their efficiency and suitability for various applications. Multi-Core cables have also been gaining traction, attributed to their versatility and capacity to transmit multiple signals simultaneously. This competitive landscape highlights the importance of both segment values in fulfilling the diverse needs of power transmission in marine environments. The growth trends for these segments indicate a strong inclination towards Multi-Core cables, identified as the fastest-growing segment due to increasing demand for efficient energy solutions. Factors driving this growth include advancements in technology, the expansion of offshore wind farms, and the need for more integrated communication systems. Single Core cables, while dominant, are expected to remain stable, focusing on reliability in traditional applications.

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

Single Core cables are currently the dominant choice in the Japan submarine power-cable market, known for their effectiveness in transmitting high voltages over long distances with minimal losses. They are often preferred in applications where reliability and simplicity in installation are critical. Meanwhile, Multi-Core cables represent an emerging trend, designed to support a variety of functions within a single cable unit. Their ability to handle multiple signals enhances their appeal in applications involving renewable energy integration and complex power systems. This versatility positions Multi-Core cables as a key component in the future growth of marine electricity infrastructure, particularly as demands for sustainable energy solutions intensify.

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

In the Japan submarine power-cable market, the insulation type segment showcases a competitive landscape between Cross-linked polyethylene (XLPE) and Ethylene propylene rubber (EPR). XLPE has established itself as the dominant player, commanding a significant share of the market due to its robust performance characteristics and durability in underwater applications. On the other hand, EPR is quickly gaining traction, fueled by its flexibility and resistance to environmental factors, making it an attractive alternative for specific submarine cable installations. The growth trends in the insulation type segment reflect a broader shift towards enhanced performance and sustainability in power transmission. With increasing investments in renewable energy infrastructure and advancements in cable technology, both XLPE and EPR are positioned to thrive. The need for efficient energy distribution systems fuels the demand for these materials, especially as underwater energy projects expand and evolve in Japan, thus driving their respective growth trajectories.

Cross-linked polyethylene (XLPE) (Dominant) vs. Ethylene propylene rubber (EPR) (Emerging)

Cross-linked polyethylene (XLPE) is recognized for its exceptional thermal and mechanical properties, making it the dominant insulation choice for submarine power-cable applications. Its high resistance to electrical stress and damage ensures a reliable performance even in harsh underwater conditions. Meanwhile, Ethylene propylene rubber (EPR) is gaining prominence for its flexibility and high resistive qualities, which cater to specific market needs where XLPE may not be ideal. EPR presents itself as an emerging alternative in scenarios requiring better adaptability to environmental changes. Both materials are crucial in the Japan submarine power-cable market, responding to the increasing demand for efficient and durable infrastructure in energy transmission.

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

In the Japan submarine power-cable market, the conductor material segment is primarily dominated by copper, which holds a significant market share due to its superior conductivity and reliability. This established preference for copper is reflected in the strong demand for high-performance cables that are essential for long-distance power transmission. On the contrary, aluminum, while holding a smaller share, is emerging rapidly because of its cost-effectiveness and lightweight characteristics, appealing to projects seeking to reduce costs without compromising performance. The growth of this segment is driven by advancements in technology and increasing investments in renewable energy projects. Copper's dominance is underlined by its long-standing reputation in the industry, but aluminum is quickly gaining traction among developers due to its sustainable properties and reduced environmental impact. The shift towards greener materials in infrastructure development is fueling aluminum's rise, making it the fastest-growing option in the market as more companies embrace innovative solutions to future-proof their projects.

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

Copper has long been regarded as the dominant conductor material in the submarine power-cable sector, prized for its excellent electrical conductivity, strength, and robustness. Its proven track record in high-demand applications makes it the go-to choice for many power transmission projects. Conversely, aluminum is positioned as the emerging alternative, offering competitive advantages such as reduced weight and lower costs, which are increasingly important factors in project planning. The trend towards lightweight and cost-efficient solutions supports aluminum's growing popularity, especially in new developments focused on sustainability and environmental responsibility. Both materials are vital to the evolving landscape of the submarine power-cable market, but they serve distinct purposes that cater to the varied demands of today's infrastructure needs.

By End Use: Offshore Wind Power Generation (Largest) vs. Offshore Oil & Gas (Fastest-Growing)

In the Japan submarine power-cable market, the distribution of market share among end use segments reveals Offshore Wind Power Generation as the largest segment, significantly contributing to the overall demand. Offshore Oil & Gas follows closely, which is currently experiencing rapid growth owing to increased investments and advancements in technology for energy extraction. Additionally, emerging sectors such as Island Connection and Wave & Tidal Power Generation hold potential, though they have a smaller market presence compared to the leaders. The growth trends for this segment are driven by several factors, including government policies promoting renewable energy sources and the urgent need for energy diversification. With Japan's commitment to reducing carbon emissions, Offshore Wind Power Generation is becoming a focal point. Meanwhile, Offshore Oil & Gas is witnessing a surge in demand as operators seek to maximize resource extraction, supported by technological innovations and enhanced underwater infrastructure.

Offshore Wind Power Generation (Dominant) vs. Offshore Oil & Gas (Emerging)

Offshore Wind Power Generation stands out as the dominant segment in the Japan submarine power-cable market, characterized by its significant capacity and ongoing projects initiated by major energy companies. The push for renewable energy has led to substantial investments in this area, fostering technological innovations and regulatory support. Conversely, Offshore Oil & Gas is labeled as an emerging segment, propelled by advancements in extraction technology and a surge in projects aiming to meet energy demands. While it currently plays a smaller role in the market, its growth trajectory is notable, as stakeholders capitalize on existing offshore infrastructure and enhancements that improve operational efficiency. The interplay between these segments highlights a transition toward sustainable energy, with Offshore Oil & Gas simultaneously evolving to meet escalating energy needs.

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

In the Japan submarine power-cable market, the voltage segment is predominantly led by the 'Up to 66 KV' category, which commands a significant market share. This segment is favored for its versatility in various applications, from wind farms to regional grid connections. Conversely, the 'Above 220 KV' segment is gradually gaining ground, fueled by the increasing demand for high-capacity transmission solutions, especially as renewable energy initiatives grow in importance. Growth trends in the voltage segment are characterized by a shift towards higher voltage capabilities, as demand for efficient and reliable power transmission escalates. The '66 KV-220 KV' segment also reflects notable growth, driven by utility projects aimed at modernizing infrastructure. Factors such as governmental support for energy transition, coupled with advancements in submarine cable technology, are propelling this market forward, highlighting the industry's evolution.

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

The 'Up to 66 KV' segment is primarily recognized for its established dominance within the Japan submarine power-cable market, largely attributed to its wide application in offshore wind energy projects and localized power distribution. This segment effectively meets the demands for flexibility and reliability in power supply across various energy sectors. On the other hand, the 'Above 220 KV' segment is emerging as a significant player, driven by the necessity for higher transmission capacity. The need for effective long-distance power transmission solutions, combined with technological advancements, positions this segment as a vital contributor to the future landscape of power transmission, aligning with the broader trends toward sustainable energy solutions.

Get more detailed insights about Japan Submarine Power Cable Market

Key Players and Competitive Insights

The submarine power-cable market in Japan is characterized by a competitive landscape that is increasingly shaped by technological advancements and strategic collaborations. Key players such as Nexans (FR), Prysmian Group (IT), and Sumitomo Electric Industries (JP) are actively pursuing innovation and regional expansion to enhance their market positions. These companies appear to be focusing on developing high-capacity cables and integrating digital solutions to optimize performance, which collectively fosters a dynamic competitive environment. In terms of business tactics, localizing manufacturing and optimizing supply chains are pivotal strategies employed by these companies. 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 notable, as they leverage their global presence and technological expertise to maintain a competitive edge. In October 2025, Nexans (FR) announced a partnership with a leading renewable energy firm to develop a new line of submarine cables designed specifically for offshore wind farms. This strategic move underscores Nexans' commitment to sustainability and positions the company to capitalize on the growing demand for renewable energy solutions in Japan. The collaboration is likely to enhance their product offerings and strengthen their market presence. In September 2025, Prysmian Group (IT) unveiled a state-of-the-art manufacturing facility in Japan, aimed at increasing production capacity for high-voltage submarine cables. This investment reflects Prysmian's strategy to localize operations and respond swiftly to the increasing demand for submarine power infrastructure. The facility is expected to significantly reduce lead times and improve supply chain efficiency, thereby enhancing their competitive positioning. In August 2025, Sumitomo Electric Industries (JP) secured a major contract for the supply of submarine cables for a large-scale interconnection project between Japan and a neighboring country. This contract not only reinforces Sumitomo's reputation as a reliable supplier but also highlights the strategic importance of cross-border energy projects in enhancing regional energy security. Such initiatives are likely to bolster their market share and influence in the submarine power-cable sector. As of November 2025, current trends in the submarine power-cable market indicate a strong emphasis on digitalization, sustainability, and the integration of AI technologies. Strategic alliances among key players are shaping the competitive landscape, fostering innovation and enhancing operational efficiencies. The shift from price-based competition to a focus on technological advancement and supply chain reliability is becoming increasingly evident. Moving forward, companies that prioritize innovation and sustainable practices are likely to differentiate themselves in this evolving market.

Key Companies in the Japan Submarine Power Cable Market include

Industry Developments

In recent months, the Japan Submarine Power Cable Market has experienced significant developments, particularly with a growing focus on renewable energy integration and infrastructure expansion. JPower and Sumitomo Electric Industries are actively involved in projects to enhance the transmission of offshore wind farm energy, crucial due to Japan's renewable energy targets. In terms of market dynamics, companies like Mitsubishi Electric and Furukawa Electric are also increasing their market valuation through innovations in technology and production efficiency, responding to heightened demand for undersea transmission systems.

Notably, in July 2023, General Cable, a subsidiary of Prysmian Group, announced a strategic partnership with LS Cable and System to collaborate on advanced undersea cables. Additionally, ongoing discussions and planned collaborations among leading companies such as ABB and Siemens are indicating a trend towards consolidation to streamline operations and improve capabilities in the submarine cable segment. The Japanese government continues to support advancements in submarine cable technology, which is expected to significantly influence market growth, with an emphasis on achieving net-zero carbon emissions by 2050, spurring further investments and activities in the sector.

Future Outlook

Japan Submarine Power Cable Market Future Outlook

The Submarine Power Cable Market in Japan is poised for growth at a 9.4% CAGR from 2025 to 2035, driven by renewable energy expansion, technological advancements, and increased offshore wind projects.

New opportunities lie in:

  • Investment in advanced cable manufacturing technologies to enhance efficiency. Development of integrated maintenance solutions for offshore installations. Partnerships with renewable energy firms to secure long-term contracts.

By 2035, the submarine power-cable market is expected to achieve robust growth and increased market share.

Market Segmentation

Japan Submarine Power Cable Market Type Outlook

  • Single Core
  • Multi-Core

Japan Submarine Power Cable Market End Use Outlook

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

Japan Submarine Power Cable Market Voltage Outlook

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

Japan Submarine Power Cable Market Insulation Type Outlook

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

Japan Submarine Power Cable Market Conductor Material Outlook

  • Copper
  • Aluminum

Report Scope

MARKET SIZE 2024 863.88(USD Million)
MARKET SIZE 2025 945.08(USD Million)
MARKET SIZE 2035 2320.8(USD Million)
COMPOUND ANNUAL GROWTH RATE (CAGR) 9.4% (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), Sumitomo Electric Industries (JP), LS Cable & System (KR), ABB (CH), Siemens (DE), Telefónica (ES)
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 innovation and competition in the submarine power-cable market.
Countries Covered Japan
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FAQs

What is the expected market size of the Japan Submarine Power Cable Market in 2024?

The Japan Submarine Power Cable Market is expected to be valued at 716.62 million USD in 2024.

What will the market size be in 2035?

In 2035, the Japan Submarine Power Cable Market is projected to reach approximately 2737.55 million USD.

What is the expected CAGR for the Japan Submarine Power Cable Market from 2025 to 2035?

The market is expected to grow at a CAGR of 12.958% from 2025 to 2035.

Which type of submarine power cable is expected to have a significant market share by 2035?

By 2035, the AC submarine power cable segment is projected to be valued at around 1200 million USD.

How much is the DC submarine power cable segment expected to be valued in 2035?

In 2035, the DC submarine power cable segment is anticipated to reach approximately 1537.55 million USD.

Who are the major players in the Japan Submarine Power Cable Market?

Key players in the market include JPower, LS Cable & System, Havelsan, and Sumitomo Electric Industries among others.

What are the key growth drivers for the Japan Submarine Power Cable Market?

The market is driven by increasing investments in renewable energy and the demand for efficient power transmission solutions.

What challenges does the Japan Submarine Power Cable Market face?

Challenges include high installation costs and regulatory hurdles that can affect project timelines.

What are the key applications of submarine power cables in Japan?

Submarine power cables are primarily used for offshore wind farms, inter-island connections, and grid interconnections.

How does the Japan Submarine Power Cable Market align with the global trends?

The market aligns with global trends towards sustainable energy solutions and increased offshore energy production.

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