Evaluation methods and Applications of Factor X Indicator for Realization of a Sustainable Society

The compatibility of dematerialization with economic growth is indispensable for the realization of a sustainable society, which involves the problem of how to improve eco-efficiency. Mitsubishi Electric Corporation has proposed an independent calculating method based on MET (M: Material = Effective utilization of resources; E: Energy = Effective use of energy; T = Toxicity = Prevention of emission of environmentally risky substances) currently being promoted as an example of Mitsubishi Electric Corporation´s environmental activities regarding Factor X which is drawing attention as a management index of a product´s environmental impact. Mitsubishi applied this calculation method to its products and unveiled their trial calculated values in December 20011. This paper describes the concept of Mitsubishi Electric Corporation´s Factor X, the degree of performance improvement, the degree of reduction of environmental impact, the calculation method and examples