DeepWind Weekly delivers key updates on Japan’s offshore wind sector in English every week.
This article provides a full digest of the major developments in August 2025.
August 1st Week
Matsumae & Hiyama designated as new promotion areas
Under the Renewable Energy Sea Area Utilization Act, Matsumae and Hiyama were newly designated as promotion zones, bringing the national total to 12. Guidelines for public tenders and operator selection will follow.
JERA and BP integrate offshore wind businesses – “JERA Nex bp” established
JERA and BP launched a new joint venture, “JERA Nex bp,” consolidating their offshore wind operations with a combined scale of 13 GW in Japan and overseas.
Policy update – Discussions on the 7th Strategic Energy Plan
The government has started discussions on the 7th Strategic Energy Plan, reaffirming offshore wind as a core power source toward achieving 2050 carbon neutrality.
👉 Read more: DeepWind Weekly – August 1st Week 2025
August 2nd Week (Aug 5–11)
Floating Offshore Wind Industry Vision (2nd Edition) released
METI announced the 2nd Floating Wind Industry Vision, setting targets of 15 GW by 2040, 65%+ domestic procurement, and accelerated EEZ development.
Taisei Corporation acquires Toyo Construction – Expanding offshore capabilities
Taisei will acquire Toyo Construction (~JPY 160B) as a wholly owned subsidiary. By combining onshore and marine expertise, the companies aim to strengthen offshore wind and CNP projects.
Blue carbon pilot in Nyuzen – Shimizu Corporation launches seaweed bed project
Shimizu Corporation initiated Japan’s first seaweed bed experiment on fixed-bottom turbine foundations off Nyuzen. The project enhances CO₂ absorption, biodiversity, and seabed protection.
👉 Read more: DeepWind Weekly – August 2nd Week 2025
August 3rd Week
Kajima exits Mitsubishi-led consortium as costs escalate
Kajima Corporation has withdrawn from the Mitsubishi-led offshore wind consortium in Chiba and other areas. Escalating construction costs led to disagreements over cost-sharing, raising concerns about project delays.
Ocean Winds eyes Japan – Calls for track record-based system
With Japan targeting 15 GW of floating capacity by 2040, Ocean Winds’ CEO expressed strong interest in entering the market. He emphasized the need for a selection framework that values international operational experience.
Floating turbines may attract fish – Nagasaki University’s eDNA findings
Researchers at Nagasaki University detected higher concentrations of horse mackerel DNA near floating turbines off the Goto Islands. The study suggests a fish aggregating effect, highlighting interactions between renewable energy projects and marine ecosystems.
👉 Read more: DeepWind Weekly – August 3rd Week 2025
August 4th Week
Mitsubishi-led Consortium Exits Three Offshore Wind Projects
Mitsubishi Corp. and partners announced withdrawal from Noshiro/Mitane/Oga, Yurihonjo, and Choshi sites.
Goto Floating Installation Demonstration
In Goto, Nagasaki, a new method was tested: assembling turbines onshore, transporting them offshore, and slotting them into foundations.
MODEC Secures AiP for TLP Floating Wind Concept
MODEC obtained Approval in Principle (AiP) from ABS for its iTLP2-FOWT design.
👉 Read more: DeepWind Weekly – August 4th Week 2025
This Month’s Takeaway
- Policy: Floating wind target clarified – 15 GW by 2040, EEZ development to accelerate
- Industry: Mitsubishi-led Consortium Exits Three Offshore Wind Projects
- Technology: MODEC Secures AiP for TLP Floating Wind Concept
Summary: August 2025 marked a turning point where Japan’s offshore wind market advanced on three fronts: clearer policy direction, industry suprising, and new design progress.
Explore more categories at DeepWind:
- 🔍Market Insights – Understand the latest trends and key topics in Japan’s offshore wind market
- 🏛️Policy & Regulations – Explore Japan’s legal frameworks, auction systems, and designated promotion zones.
- 🌊Projects – Get an overview of offshore wind projects across Japan’s coastal regions.
- 🛠️Technology & Innovation – Discover the latest technologies and innovations shaping Japan’s offshore wind sector.
- 💡Cost Analysis – Dive into Japan-specific LCOE insights and offshore wind cost structures.
