Japan Offshore Wind Energy Market Size, Share, Trends and Forecast by Component, Foundation Type, Capacity, Location, and Region, 2026-2034

Japan Offshore Wind Energy Market Overview:

The Japan offshore wind energy market size reached USD 965.75 Million in 2025. Looking forward, IMARC Group expects the market to reach USD 2,645.22 Million by 2034, exhibiting a growth rate (CAGR) of 11.85% during 2026-2034. The market is driven by the expansion of offshore wind development into Japan's Exclusive Economic Zones following legislative reforms in 2024, which unlocked vast deepwater areas suitable for floating wind farms. Furthermore, successful completion of major auction rounds attracting both domestic and international players demonstrates strong market momentum, supporting the Japan offshore wind energy market share.

Japan Offshore Wind Energy Market Trends:

Expansion of Offshore Wind Development into Exclusive Economic Zones

Japan is experiencing transformative growth in offshore wind capacity through legislative reforms that expand development opportunities beyond territorial waters into the country's Exclusive Economic Zones. In January 2024, the Japanese government approved a major legal reform amending the Act on Promoting the Utilization of Sea Areas for Development of Marine Renewable Energy Power Generation Facilities, allowing designation and tendering of offshore wind areas in the EEZ beyond the 22-kilometer territorial waters boundary. This legislative milestone is critically important because Japan's EEZ is approximately 12 times larger than its landmass and 10 times the size of its territorial sea, containing the vast majority of the nation's offshore wind potential estimated at over 400 GW for floating installations alone. The reform introduces a structured two-stage approval process modeled partly on UK practices, where developers first secure leasing rights for up to 30 years, then engage in stakeholder negotiations with local communities and fisheries before receiving final construction permits. This regulatory framework addresses Japan's unique geographic challenges, as the country's deep coastal waters and steep continental shelf make traditional fixed-bottom installations feasible only in limited nearshore areas. The EEZ expansion is particularly significant for floating offshore wind technology, which is essential for Japan to achieve its ambitious targets of 10 GW of offshore wind capacity by 2030 and 30-45 GW by 2040. Industry stakeholders, including the Global Wind Energy Council, welcomed this development as crucial for increasing Japan's energy autonomy and resilience while creating important global industrial opportunities.

Advancement of Floating Offshore Wind Technology Through Industry Collaboration

The Japan offshore wind energy market growth is being accelerated through unprecedented industry collaboration focused on floating offshore wind technology development. In March 2024, Japan launched the Floating Offshore Wind Technology Research Association, a specialized consortium of 14 founding companies that expanded to 21 members by July 2024, including major utilities JERA, Kansai Electric Power, Tokyo Gas, Tohoku Electric Power, and Marubeni Offshore Wind Development Corporation. FLOWRA's collaborative approach addresses fundamental challenges that individual developers cannot solve alone, including designing infrastructure capable of withstanding Japan's severe weather and sea conditions, developing adequate port infrastructure and supply chains, and navigating complex regulatory frameworks. The association has already established formal partnerships with overseas organizations including the U.S. Department of Energy, National Renewable Energy Laboratory, Bureau of Ocean Energy Management, and the UK's Offshore Renewable Energy Catapult, facilitating technology transfer and knowledge exchange. Concurrently, Japanese energy companies are making strategic international investments to gain operational expertise in floating wind technology. In August 2024, Tokyo Gas acquired a 21.2 percent stake in Portugal's WindFloat Atlantic floating offshore wind farm, marking the company's first direct investment in an overseas floating wind project. This strategic investment allows Tokyo Gas to gain practical experience with floating wind operations and maintenance that can be applied to Japan's domestic market development. These collaborative initiatives reflect recognition across Japan's energy sector that floating offshore wind represents a critical technology for the nation's energy transition.

Japan Offshore Wind Energy Market Segmentation:

IMARC Group provides an analysis of the key trends in each segment of the market, along with forecasts at the country and regional levels for 2026-2034. Our report has categorized the market based on component, foundation type, capacity, and location.

Component Insights:

• Turbine
• Substructure
• Electrical Infrastructure
• Others

The report has provided a detailed breakup and analysis of the market based on the component. This includes turbine, substructure, electrical infrastructure, and others.

Foundation Type Insights:

• Fixed Foundation
• Floating Foundation

A detailed breakup and analysis of the market based on the foundation type have also been provided in the report. This includes fixed foundation and floating foundation.

Capacity Insights:

• Less Than 5 MW
• Greater than or Equal to 5 MW

The report has provided a detailed breakup and analysis of the market based on the capacity. This includes less than 5 MW and greater than or equal to 5 MW.

Location Insights:

• Shallow Water
• Transitional Water
• Deep Water

A detailed breakup and analysis of the market based on the location have also been provided in the report. This includes shallow water, transitional water, and deep water.

Regional Insights:

• Kanto Region
• Kansai/Kinki Region
• Central/Chubu Region
• Kyushu-Okinawa Region
• Tohoku Region
• Chugoku Region
• Hokkaido Region
• Shikoku Region

The report has also provided a comprehensive analysis of all the major regional markets, which include Kanto Region, Kansai/Kinki Region, Central/Chubu Region, Kyushu-Okinawa Region, Tohoku Region, Chugoku Region, Hokkaido Region, and Shikoku Region.

Competitive Landscape:

The market research report has also provided a comprehensive analysis of the competitive landscape. Competitive analysis such as market structure, key player positioning, top winning strategies, competitive dashboard, and company evaluation quadrant has been covered in the report. Also, detailed profiles of all major companies have been provided.

Japan Offshore Wind Energy Market News:

• December 2024: JERA, Green Power Investment, and Tohoku Electric Power were selected as the business operators for the Aomori Tsugaru Offshore Wind Power Project in Japan's third offshore wind auction. The consortium plans to develop a 615 MW offshore wind farm comprising 41 Siemens Gamesa 15 MW wind turbines located in the Sea of Japan off Aomori Prefecture, with operations expected to begin in June 2030. The project, one of the largest offshore wind developments in Japan, has an estimated capital expenditure of approximately JPY 253 billion and was selected based on the consortium's local development capabilities and extensive regional experience.

Japan Offshore Wind Energy Market Report Coverage:

Key Questions Answered in This Report:

• How has the Japan offshore wind energy market performed so far and how will it perform in the coming years?
• What is the breakup of the Japan offshore wind energy market on the basis of component?
• What is the breakup of the Japan offshore wind energy market on the basis of foundation type?
• What is the breakup of the Japan offshore wind energy market on the basis of capacity?
• What is the breakup of the Japan offshore wind energy market on the basis of location?
• What is the breakup of the Japan offshore wind energy market on the basis of region?
• What are the various stages in the value chain of the Japan offshore wind energy market?
• What are the key driving factors and challenges in the Japan offshore wind energy market?
• What is the structure of the Japan offshore wind energy market and who are the key players?
• What is the degree of competition in the Japan offshore wind energy market?

Key Benefits for Stakeholders:

• IMARC's industry report offers a comprehensive quantitative analysis of various market segments, historical and current market trends, market forecasts, and dynamics of the Japan offshore wind energy market from 2020-2034.
• The research report provides the latest information on the market drivers, challenges, and opportunities in the Japan offshore wind energy market.
• Porter's five forces analysis assist stakeholders in assessing the impact of new entrants, competitive rivalry, supplier power, buyer power, and the threat of substitution. It helps stakeholders to analyze the level of competition within the Japan offshore wind energy industry and its attractiveness.
• Competitive landscape allows stakeholders to understand their competitive environment and provides an insight into the current positions of key players in the market.