Abstract
In present research, a modified DEA model has been used to evaluate the efficiency of different regions of Fars electricity distribution company in a Fuzzy environment. This model eliminates the weak points of basic models of data envelopment analysis in calculation of a different collection of selected weights for different units. First, the efficiency of electricity distribution units was measured using classical model of data envelopment analysis, and then this action was performed using modified model. In classic model, 5 electricity distribution units out of 18 were considered as efficient areas (about 28%), while in modified model, only 1 unit (about 5.5%) was efficient. The average of unit efficiency in classical model was 0.74, while in modified model it was 0.36. It indicates that this model not only eliminates the mentioned weak point, but also it increases the differentiation potential of classical models.
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