DeepWind Weekly | Japan Offshore Wind Highlights – August 2025 Week 4

DeepWind Weekly Aug 2025 week4

This week, DeepWind Weekly highlights three major developments shaping Japan’s offshore wind sector.

News Highlights

1. Mitsubishi-led Consortium Exits Three Offshore Wind Projects

Mitsubishi Corp. and partners announced withdrawal from Noshiro/Mitane/Oga, Yurihonjo, and Choshi sites.
Ultra-low bid prices combined with inflation, FX volatility, and rising interest rates undermined project viability. Re-tendering will be required, marking a turning point for Japan’s renewable energy strategy.

🔗 Read article (Press release of Mitsubishi Corp)

2. Goto Floating Installation Demonstration

In Goto, Nagasaki, a new method was tested: assembling turbines onshore, transporting them offshore, and slotting them into foundations.
The approach reduces weather-related risks and costs, and could support deployment of 240m rotor-class turbines in the future.

🔗 Read article (NHK – Japanese)

3. MODEC Secures AiP for TLP Floating Wind Concept

MODEC obtained Approval in Principle (AiP) from ABS for its iTLP2-FOWT design.
The Tension Leg Platform reduces motion and seabed footprint, enabling deployment at 50m+ depths with 15MW-class turbines, and potentially beyond.

🔗 Read article (Nikkei– Japanese)

This Week’s Takeaway

While Mitsubishi’s withdrawal exposes market challenges, Goto’s installation innovation and MODEC’s TLP concept show promising progress.
Japan’s offshore wind is at a crossroads, where policy recalibration and technological advances will shape its future.

Want to see the full picture of this month’s developments?
Check out the “Aug 2025 Monthly Digest” here.

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.
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