The paper synthesises and compares the results of a research carried out on the energy potential of the provinces of Enna and Syracuse from the perspective of wind energy production. The study highlighted some remarkable differences between the two provinces due to the different wind dynamics and the presence of the landscape characteristics. We propose a wide land planning tool including a section devoted to the calculation of the energy that can be produced by plants located in the permitted areas, an evaluative section devoted to the financial sustainability of the investments, and a section devoted to the landscape assessment due to the different intervisibility of the allowed plants, and a section devoted to the formalization of the decision making process. A set of GIS tools supports the mentioned sections in defining the pattern for the localization of the wind farms, and in measuring and featuring the visual impact.