“…A large restructuring of the energy networks will probably be necessary in the future and this will entail the consideration of multiple objectives and multiple criteria, including the competition for land use. Examples related to design and planning decision problems, solved through mathematical programming and multicriteria approaches, can already be found in the literature at local scale (for example : Cai et al, 2009;Pohecar and Ramachandra, 2004;Ramachandra, 2009), but more flexible and integrated tools that couple environmental and decision models, databases and assessment tools, integrated under a GIS based Graphical User Interface (GUI) (Denzer, 2005;Matthies et al, 2007;Rizzoli and Young, 1997) are still necessary to implement Environmental Decision Support Systems that can operate on different territories and multiple scales to plan and manage an efficient mix of renewable energy sources. (Muffler et al, 1978).…”