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In this paper, a decision support system for the locating of future hydrogen refueling stations (HRS) is presented. It explores the use of two approaches. The first one consists of using the geographical information system (GIS) as a tool to evaluate the alternative toward the location of future HRS under safety criterion, while the second one is based on the use of a mathematical optimization model that takes into account the minimization HRS installation costs as well as the transportation costs. The DSS will identify suitable sites providing information on a multi-criteria level evaluation of locating the HRS. The GIS based DSS is applied to a region in the North of Italy, while future development will focus on completing and applying the mathematical optimization model.