The project is a smart aquaponics system that is powered by renewable energy. It can automatically maintain the growth of plants and fish in the tank. The nutrients will circulate within the system to produce healthy organic products for the local market. By using renewable energy, carbon emission is reduced. In comparison with normal agriculture, aquaponics system can save energy and water. It produces more oxygen and causes less water pollution. Furthermore, this is a great response to climate change and fuel crisis. It will help us achieve net-zero emission and build a more sustainable society in Hong Kong.