This paper discusses the needs of capacity building for energy efficient buildings in China and explains the potential of using the World Wide Web for improving the education and information programmes. A Web-based information system has been developed at The University of Hong Kong for the dissemination and promotion of energy efficient technologies. The Web materials from the system have also been used to create a learning environment for supporting university education and professional training and for promoting informal learning and self-study of the subject. It is believed that the Web-based approach can be promoted in China to enhance the capacity-building activities. Courses and training programmes are now being developed for promoting energy efficiency and sustainable architecture.