The course focuses on the ex-ante and ex-post economic evaluation of projects with major impacts from the societal standpoint, including those for which the information provided by relevant markets is incomplete. The discussion of the theoretical background, mainly based on applied "welfare economics" will be carried on along with the introduction to the techniques typically employed to tackle practical issues in ex-ante and ex-post economic evaluation. Upon completion of the course, students will be able to identify an appropriate evaluation method, based on the characteristics of the project, and to apply the relevant techniques to real world situations. Case studies from a variety of fields will be presented and empirical exercises with real world data will be performed in the computer lab. During the course, students will be given the opportunity to work in group on a specific case study and present it in class.