Japan’s offshore wind industry is approaching a decisive moment, with the Global Wind Energy Council (GWEC) urging the government to overhaul its auction system and create a structured public-private forum to accelerate project progress and safeguard investment confidence.
In a new white paper titled Unlocking Japan’s Offshore Wind Potential: Strategic Pathways to Overcome Market Bottlenecks and Drive Industrial Growth, produced in collaboration with renewable energy consultancy OWC, GWEC outlined both short- and long-term reforms aimed at strengthening Japan’s offshore wind policy framework.
Japan has completed three rounds of offshore wind tenders. The single developer from Round 1 has withdrawn, while the winners of Rounds 2 and 3 are facing financial strain that threatens the project’s viability. These challenges, GWEC said, underscore the need for redesigning auctions and for a more responsive policy mechanism that reflects current market realities.
Without timely reforms, Japan risks delays in achieving its decarbonisation and energy security objectives—two pillars of its broader strategy to become carbon-neutral by 2050.
“Japan holds immense offshore wind potential and cannot afford to lose momentum at this stage,” said Takeshi Matsuki, GWEC’s Japan Country Manager. “Reforming the auction system, reassessing offtake arrangements, and addressing key market bottlenecks are essential to restore growth and maintain offshore wind as a core component of Japan’s energy mix.”
He noted that expanding offshore wind could deliver locally sourced, affordable renewable power, while revitalising coastal economies through employment and industrial growth.
Masataka Nakagawa, OWC’s Japan Country Manager, described the current moment as pivotal for Japan’s clean energy transition. “While the initial auction rounds have laid the groundwork, recent developments show the urgent need for structural and institutional adjustments to ensure delivery and investor confidence,” he said.
Nakagawa emphasised three key areas for improvement: auction design, offtake mechanisms, and market bottlenecks. He said Japan should refine evaluation criteria to balance price and non-price factors, update price caps, and shift toward more stable models such as two-sided Contracts for Difference (CfD) or Feed-in Tariffs (FIT). Enhancing transparency in certification processes, mitigating curtailment risks, and improving supply chain visibility were also identified as priorities.
The white paper recommends short-term steps such as retendering the Round 1 site and revising criteria for upcoming auctions, while longer-term measures include introducing a two-stage auction model and setting Commercial Operation Date-based (COD) targets to promote timely delivery and strengthen Japan’s domestic manufacturing base.
GWEC and OWC presented the findings to Japan’s Ministry of Economy, Trade and Industry (METI), the Ministry of Land, Infrastructure, Transport and Tourism (MLIT), and the Ministry of Environment (MOE) in late October. According to the organisations, these ministries showed strong interest in the proposals.
As a next step, GWEC will develop a detailed plan for a bridging forum to facilitate dialogue between the public and private sectors. The platform aims to build a transparent and stable policy environment that supports Japan’s offshore wind expansion.
