Lots of countries are now running projects in order to increase their electrification rate. One of the means used to achieve this goal is the Solar Home System, SHS. It is with this intention that a project was born in Peru. The concept was to sell a SHS which includes roughly a PV panel, a battery, one regulator and lamps with the help of a loan. This project has been carried out from 1996 to 1999 with the installation of 421 SHS. An evaluation is now necessary for the authorities to realize on the finality of those kinds of PV projects and more merely to prevent the same errors in the following SHS. This evaluation has taken into account the standard technical and economical points of view but also the social and environmental effects of those installations. It has been achieved by observations and by a survey performed in 49 families. Moreover the investigation has also lead me to meet different actors like school teacher, mayor etc. Although the social results is ambivalent (there are good and bad aspects of the electrification of a community), economically and environmentally it is success.