The use of the Multi Criteria Decision Analysis (MCDA) techniques provides a reliable methodology to rank alternative RES projects in the presence of numerous objectives and constraints. Despite however, the large number of available MCDA methods, none of them is considered the best for all kind of decision making situations. There are no better or worse techniques, only techniques that fit better to a certain situation or not. Nevertheless different methods, when applied to the same problem using similar data, often produce different results. The main question is therefore, how to choose the appropriate MCDA methodology in RES decision making.
The main attributes under which the selected methods should be evaluated are:
Quite a lot of MCDA methods realize some of the above listed requirements but no method is capable to incorporate all at the same time.
Finally, the PROMRTHEE II has been selected for the Greek case-studies. The selection of the above method was based on the following characteristics:
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