Evaluation of energy systems requires linguistic terms under vague and imprecise environment. The required design parameters of energy systems and the corresponding system values of those parameters should be compared to reveal that how much the alternative energy system meets the required design parameters. One of the best methods for this comparison is multi-attribute axiomatic design method. In this chapter, we present an intuitionistic fuzzy information axiom methodology in order to select the best wind energy alternative. Information axiom is used in this chapter, which is one of the two axioms of axiomatic design (AD) methodology. Triangular intuitionistic fuzzy sets are also used in the methodology. Six wind energy alternatives are evaluated based on eight attributes. A sensitivity analysis is applied to examine the robustness of the given decisions.