Published: January 10, 2025 | Updated: October 7, 2026
Introduction
Japan has set ambitious goals to achieve carbon neutrality by 2050, aiming to expand its offshore wind power capacity to 10 GW by 2030 and 30-45 GW by 2040. To realize these targets, building a robust offshore wind supply chain is essential. Japan is actively working to strengthen domestic manufacturing of wind turbines, foundation structures, and specialized vessels in order to establish a sustainable energy supply system.
For a structured overview of Japan’s offshore wind market—including policy, investment dynamics, costs, and supply-chain constraints—see our pillar article.
👉 Japan Offshore Wind Market Analysis (Pillar)
1. Latest Developments in the Offshore Wind Supply Chain
1-1. Domestically produce key wind turbine components.
- Toshiba: Manufacturing nacelles (generator units) in Kanagawa Prefecture.
- TDK: Producing high-performance magnets for wind turbines in Chiba Prefecture.
These initiatives are expected to not only increase Japan’s self-sufficiency in wind power but also stimulate domestic industrial growth and enhance competitiveness in the global market.
1-2. Expansion of Foundation Manufacturing
Domestic production of foundations—such as monopiles and jackets that support wind turbines—is also underway.
- Major firms like JFE Engineering and Nippon Steel are manufacturing foundation structures for large-scale offshore wind projects.
- As the offshore wind sector grows, these companies aim to establish more efficient production systems.
1-3. Development and Deployment of Specialized Vessels
Offshore wind installation and maintenance require specialized vessels.
- Blue Wind by Shimizu Corporation: Japan’s first self-elevating platform (SEP) vessel dedicated to offshore wind, capable of rapid turbine installation.
- CTV (Crew Transfer Vessel) by Akita Offshore Wind Service: Supports operations and maintenance (O&M), enhancing on-site work efficiency.
These vessels are expected to significantly boost Japan’s offshore wind construction capabilities.
2. Achievements and Future Outlook
2-1. Successful Case of a Domestic Supply Chain
The Ishikari Bay offshore wind project in Hokkaido achieved a domestic procurement rate exceeding 60%. This indicates that Japan’s offshore wind supply chain is beginning to demonstrate real competitiveness.
2-2. Enhancing Competitiveness and Expanding into Global Markets
Japan aims to strengthen its domestic supply chain while also entering the global market, with the goal of becoming a leading offshore wind nation in Asia. To achieve this, the following will be essential:
- Reducing manufacturing costs
- Promoting technological innovation
- Complying with international standards
Conclusions
The development of Japan’s offshore wind supply chain contributes not only to a stable domestic energy supply but also to economic growth and enhanced international competitiveness. With continued investment and technological innovation, Japan’s offshore wind market has the potential to become a global leader.
Japan’s offshore wind market cannot be understood through a single lens. A cross-cutting view—integrating policy, investment behavior, cost structures, and execution capability—is consolidated in our pillar article.
👉 Japan Offshore Wind Market Analysis (Pillar)
Why Isn't Floating Wind Bankable in Japan Yet?
The synchronized supply-chain bottleneck, quantified node by node, with a full sensitivity ranking and a bankability ladder of scaling conditions. Includes Simulator Professional (β) access to reproduce every figure on your own assumptions.
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