In recent years, the most significant change towards renewable energy applications in Hong Kong is that most government officers, property investors, architects and engineers can now consider how to use renewable energy resources in policy making and property development. This paper presents the experience and findings from our research and consultancy projects completed in recent years. Our recent effort for demonstrating and promoting renewable energy applications in the territory is also reported, i.e. the development of the Ma Wan Theme Park. A number of solar and wind energy technologies are installed for research and demonstration purposes. Besides, ground source heat pump, small hydro power and biomass energy are also shown to the visitors. A teaching programme is developed for school students and public societies.