Typology of regional units based on RES plants: The case of Greece

The clustering of the Greek regional units (former prefectures) is accomplished by using the multivariate statistical method of cluster analysis and, more specifically, through hierarchical cluster analysis. The hierarchical cluster analysis resulted in five clusters, each featuring different characteristics. The first cluster consists of nineteen regional units located in mainland Greece. The majority of electricity generating plants from RES are found in this cluster. The second cluster comprises eighteen regional units, most of which are located on islands. This cluster includes a large number of wind plants, of low power however. The third cluster consists of six regional units and is characterized by a large number of high power wind plants. The fourth cluster includes seven regional units, which are all located in mainland Greece. A characteristic feature of this cluster is the fact that it includes most biomass plants, and the majority of small hydropower plants. The fifth cluster only comprises one regional unit, Attiki, where the capital of Greece is located.