Background
While Japan has maintained a global lead in fundamental research for perovskite solar cells, effectively deploying this technology in international markets requires more than domestic demonstrations. It necessitates performance evaluation under diverse real-world conditions abroad and the establishment of international standards. In an increasingly competitive global landscape, integrating Japanese-developed technology into global supply chains and establishing international standards are crucial for long-term competitiveness. Recognizing this, the government has identified a strategic need to support the overseas expansion of perovskite solar cells.
Key Findings / Results
Through revisions to its “Next-Generation Solar Cell Development” project, approved on April 15, 2026, the Ministry of Economy, Trade and Industry (METI) has announced a significant reinforcement of its support for the international expansion of perovskite solar cells. The cornerstone of this enhanced strategy is the promotion of demonstration experiments across Europe, the United States, and Southeast Asia. Specifically, METI will back “Advanced Country Urban Model” projects in nations such as Germany, the Netherlands, and the United States. These projects will focus on deploying perovskite solar cells in densely populated urban areas and public infrastructure, including public transportation facilities and building facades, where the installation of conventional silicon solar panels faces significant challenges. The objective is to leverage perovskite’s inherent characteristics like flexibility and lightweight properties to open up new markets.
Technical Significance & Outlook
METI’s strengthened support for international deployment underscores Japan’s strong commitment to establishing global leadership in perovskite solar cell technology. Overseas demonstration experiments will provide Japanese companies with crucial opportunities to prove their products’ performance under various climatic conditions and regulatory requirements, thereby enhancing their credibility in international markets. Furthermore, data and insights garnered from these demonstrations are vital for influencing the formulation of international technical standards, ensuring that Japanese initiatives are reflected. This strategic participation allows Japanese firms not only to supply technology but also to contribute to rule-making, potentially securing long-term competitive advantages. It is anticipated that these strategies will accelerate the global adoption of perovskite solar cells and contribute to the realization of a sustainable energy society under Japanese leadership. This policy is also expected to stimulate related domestic industries, contributing to job creation and economic growth.
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