Environmental protection and effective operations management are no longer considered incompatible goals to be achieved rather they are merged to represent a strategic performance parameter of a company: the eco-efficiency. This is one of the reasons which led to Green Supply Chains (GSCs) development. To make GSCs more efficient and more effective a careful supplier performance analysis is needed considering both traditional parameters (economic efficiency) and environmental ones. In this paper an in-depth review of the performance parameters for suppliers selection is presented which provided the basis for the implementation of a Fuzzy-AHP model for "green" suppliers evaluation.