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World market energy consumption is projected to increase by 57% from 2004 to 2030. Worldwide efforts to meet these challenges include developing alternative energy sources, exploring renewable energy resources, and reducing energy consumption. In this paper, the authors presented a new design method for energy-saving product by means of two simple case studies, hair dryer and coffeemaker. The results show that the new design method is useful and applicable. However, there were some simplifications in the case studies, and further research need to be done by considering improving all the parts of the product.