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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