The Japanese government is setting ambitious goals to revolutionize renewable energy, aiming to generate 20 gigawatts of electricity comparable to the output of 20 nuclear reactors—through thin and flexible perovskite solar cells by fiscal 2040.
With Japan ranking as the world’s second-largest producer of iodine, a critical material for perovskite solar cells, the nation can establish a stable, independent supply chain. This not only boosts economic security but also ensures a competitive edge in the global renewable energy market.
Perovskite solar cells offer significant advantages over conventional silicon-based panels. They are lightweight, durable, and flexible, making them suitable for diverse applications, such as on building walls, windows, and vehicle roofs—essential for a country like Japan, where space for large-scale solar installations is limited.
Despite their promise, challenges remain, including improving cell durability, extending lifespan, and reducing production costs. While companies like Sekisui Chemical Co. are advancing toward commercialization, widespread adoption of perovskite technology is not expected until the 2030s.
Japan, which saw its share in global solar panel production plummet from 50% in 2004 to less than 1% today due to competition from Chinese manufacturers, hopes to regain its footing. By developing and exporting next-generation solar technology, the government envisions positioning perovskite solar cells as a cornerstone of its renewable energy strategy and as a significant contributor to the global clean energy transition.