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To evaluate and select the mode for the EPC project consortium, and to solve the problems of multiple evaluation indicators and insufficient evaluation, on the basis of the analysis on the consortium mode, from the perspective of helping the owner to control the EPC project, six first-level evaluation index systems are built and the evaluation methods based on the TOPSIS method, the gray relational degree, and the combination of the two are employed to evaluate and select the consortium mode for large as well as small and medium EPC projects. The analysis and evaluation results show that, for large EPC projects, the results of the three methods are consistent. The tight consortium led by the design party is the best choice, followed by the partnership led by the design party. For small and medium EPC projects, the results are consistent with the large-scale EPC projects when the TOPSIS method and the combined evaluation method are used. But there are differences in the ranking results when the grey relational degree is used to evaluate. By introducing different evaluation methods and selecting appropriate preference coefficients, it can help the owner to make a more rational judgment on the evaluation and selection of the EPC project consortium model. [ABSTRACT FROM AUTHOR]