The "Green Building Expo", first held in 2023, is an integral part of the esteemed JAPAN BUILD and takes place at the imposing Tokyo Big Sight in Tokyo. This annual event focuses on the decarbonization of buildings and showcases advanced innovations in environmentally friendly construction. Organized by RX Japan Ltd., the expo is committed to a forward-thinking approach to sustainable building methods and technologies. The expo stands out due to its focus on topics such as green transformation (GX Solutions), solar energy, energy management systems (BEMS/HEMS/FEMS), energy-efficient climate control, and LED lighting. Additionally, ZEB certification, CO2 measurement, thermal insulation materials, and sustainable building materials are presented by exhibitors from the construction, design, and building management sectors. The expo primarily targets professional visitors such as owners of facilities and buildings, operators of commercial installations, and general and subcontractors. A diverse program featuring product demonstrations, conferences, seminars, design consulting, and networking activities makes the expo a central platform for information and exchange in the industry. As part of a series of trade fairs in various Japanese cities, the Green Building Expo is a key component in the global network of trade fairs. The venue, Tokyo Big Sight, is not only Japan's largest exhibition center but also an architectural landmark. With excellent transportation links, it provides the ideal conditions for an event that focuses on the future of construction. Visitors and exhibitors can expect an inspiring experience that sets new standards in the industry. The Green Building Expo will take place on 3 days from Wednesday, 10. December to Friday, 12. December 2025 in Tokyo.