With the development of industrialization, the environmental issues become main problems for influencing sustainable development of human beings. Therefore, more and more companies began to take ??green?? into account in the process of production. The advocated Green Production Mode can make less pollution than general productions in the whole process of production. For identifying the greenness of productions, a synthetic evaluation method for ranking green productions was proposed in this paper, which based on TOPSIS algorithm. The comprehensive evaluation method also used into three different power plants in US. By using this method, the power plants can be totally ranked by their green traits.