Japan Plans Next-Gen Solar Power Equal To 20 Nuclear Reactors By 2040

Japan is aiming to generate approximately 20 gigawatts of electricity—equivalent to the output of 20 nuclear reactors—using innovative thin and flexible perovskite solar cells by 2040, Kyodo News reported.

Solar energy has become a cornerstone of Japan's power generation since the 2011 nuclear disaster. I Photo: Gregg Webb, IAEAImagebank Flickr

The Ministry of Economy, Trade, and Industry plans to prioritize next-generation solar technology in its forthcoming energy strategy to achieve net-zero emissions by 2050.

With Japan holding the world's second-largest share of iodine production—a key material for perovskite cells—the country is positioned to establish a secure, independent supply chain, boosting its economic resilience.

Solar energy has become a cornerstone of Japan's power generation since the 2011 nuclear disaster, now accounting for nearly 10% of the nation's electricity. However, space for traditional silicon-based solar panels is limited.

Lightweight and adaptable perovskite cells offer a solution, capable of being installed on walls, windows, and even car roofs.

Despite significant potential, commercialization faces hurdles, including the cells' short lifespan due to durability issues and the need for cost reductions. While companies like Sekisui Chemical Co. are advancing development, widespread adoption isn't expected until the 2030s.