However, despite its advantages, HP implementation causes several impacts on the ecological status of river systems and the preservation of characteristic landscapes. Growing energy demand and targets for reducing greenhouse gas emissions are driving a significant hydropower (HP) generation expansion in the Alpine area. 2Regional Agency for the Protection of the Environment Valle d’Aosta, Aosta, Italy.1Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Turin, Italy.Erica Vassoney 1*, Andrea Mammoliti Mochet 2, Erika Desiderio 1, Giovanni Negro 1, Maria Gabriella Pilloni 1 and Claudio Comoglio 1