In a landmark move, Tokyo has announced a new regulation requiring solar panels on new buildings, set to take effect in April 2025. This directive is a key part of the city's comprehensive strategy to achieve net-zero carbon emissions by 2050. 's new type of solar panel, left, reflects less light than a conventional one, right, in Shinagawa Ward, Tokyo, in June. Japanese solar panel manufacturers are taking a proactive approach as they see business opportunities following the decision by the Tokyo metropolitan government and. . The Japanese solar industry, with a current capacity of 75 GW, is set to reach 108 GW by 2030, driven by a 9. 2% CAGR and expected to exceed USD 10 billion in revenue by 2025. Government policies, including Feed-in Tariffs, and growing investments in residential, commercial, and utility-scale. . Japan's solar energy market continues to be a global leader in innovation and adoption, with the country aiming to reach 108 GW of solar capacity by 2030 as part of its carbon neutrality goals.