Multicriteria decision making methods are essential tools to make decisions in the corporate world. We focus here in the TOPSIS method to analyze the impact that, the way the decision matrix is constructed affects the final results. Two different ways are analized: firstly, the original matrix is considered, and secondly, a variant including two novel alternatives is used. These alternatives are constructed taking into account the range of the corresponding criteria. We made comparisons using a location problem derived from the renewable energy field.
