Key Takeaways
- Japan can triple its renewable energy capacity by 2030 by overcoming institutional and regulatory barriers.
- Ten major utilities control 75% of power capacity but hold only 0.3% in renewables, with many developers exiting the market.
- Localized strategies in certain prefectures show promise and can serve as models for broader national policies.
Renewable Energy Challenges in Japan
A new report from the Institute for Energy Economics and Financial Analysis (IEEFA) indicates that Japan can achieve its ambitious goal of tripling renewable energy capacity by 2030, provided it addresses systemic and regulatory issues. Currently, ten major Japanese electric utilities dominate nearly 75% of installed power capacity, yet they contribute only 0.3% of that capacity through renewable sources. The report highlights a concerning trend, with 52 renewable energy developers exiting the market in 2024, which included eight bankruptcies.
According to Michiyo Miyamoto, an energy finance specialist at IEEFA, Japan’s challenges in renewable energy growth stem from systemic and regulatory factors rather than technological or economic limitations. She noted the “political and corporate reluctance to transition to renewables,” as well as inadequate policies. Additional constraints include technical issues causing curtailment and disparities in renewable development costs across regions.
Some prefectures, including Fukushima, Saga, Akita, and Hokkaido, are making headway by setting local renewable energy targets and engaging their communities in financing clean energy initiatives. Miyamoto emphasized that the focus should be on scaling these local successes rather than relying on fossil fuels for energy backup.
Key reforms are urgently needed, such as improving grid access rules, modernizing market designs, and strengthening the enforcement of the existing Non-Fossil Certificate (NFC) obligations for large utilities. The report points out the absence of a comprehensive framework for transmission development, which is essential for addressing the gaps between renewable energy supply and demand, particularly in urban and rural areas.
Localized leadership in prefectures like Fukushima and Akita has led to tangible growth in renewable energy through proactive zoning, investment in transmission infrastructure, and local financing strategies. These regions exemplify how community engagement can successfully drive renewable growth.
The IEEFA report advocates for Japan to accelerate renewable energy deployment by establishing specific targets for tripling capacity through auctions and procurement mandates. Additionally, promoting corporate and community power purchase agreements (PPAs) with regulatory and financial backing is crucial.
Japan’s recent experiences with auctions have demonstrated the potential for offshore wind projects and created a replicable framework for rapid expansion. If challenges related to grid connections and supply chain logistics are addressed, Japan could position itself as a leading offshore wind hub in Asia.
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