On December 15 2022, the Tokyo Metropolitan Assembly updated the Tokyo Metropolitan Environmental Security Ordinance, making it mandatory to install solar power generation on new residential buildings. The mandate will go into effective April 2025, giving relevant businesses two years to become informed and make necessary preparations.
You can find the latest information regarding the new solar power generation mandate by clicking the link below:
Solar Power Generation Equipment leaflet（PDF：985KB）
Governor Koike’s message regarding the new solar power generation mandate (December 23rd, 2022)