During the last 7 years, wind farms have powerfully developed in Dobrogea, Romania, due to low population density and favorable wind conditions, reaching 892 turbines at the beginning of 2014, with several projects still in construction. A total of 27 bat species were recorded in the area, which is also considered a migratory route, due to its proximity to the sea. Environmental impact assessments, conceived in the preconstruction phases, were based solely on ultrasound detection and had a limited view on the seasonal changes in species diversity or key landscape features that may arouse interest for bats. This study compiles the information collected in three years of pre and post construction monitoring (2011-2014) of bat activity and mortality at various wind facilities in the study area, in order to generate a regional GIS model of the potential mortality risk. The species which were considered more vulnerable are the ones that recorded mortality values in the mentioned period (Pipistrellus nathusii, P. kuhlii, P. pipistrellus, P. pygmaeus, Vespertilio murinus, Nyctalus noctula, N. leisleri, Eptesicus serotinus, E. nilsonii).