Developing a wind energy potential map on a regional scale using GIS and multi-criteria decision methods: the case of Cadiz (south of Spain)

Abstract

This paper focuses on the combined use of geographical information systems and multi-criteria decision methods when developing a decision support model in order to determine the most favourable sites for the installation of wind turbines on a regional scale. This study differs from others in three ways: (1) it analyses two distinct scenarios (depending on whether major or minor constraints, as defined in the existing literature, are applied); (2) the area under study, Cadiz, already has an extensive network of wind-generating facilities; and (3) this study analyses at length areas where installation is not suitable. The methodology is proven to be a valid and appropriate tool for identifying potential areas for wind-energy facilities on a regional scale for both planners and investors. The model is proved to be useful for planning and evaluating phases: for example, it helps to outline criteria which can be used to define sectors where the number of suitable areas for wind-energy facilities can be increased, as well as locations where repowering might be a suitable alternative.