This paper presents the results of the use of a methodology to predict a statistically reliable, the feasibility of installing a photovoltaic generator (GPV) in an industrial user. For this purpose steps were established; first a model of existing PV array is taken, then implement a methodology for the characterization of input variables GPV (irradiance and temperature). Secondly, by a database user consumption and industrial non-deterministic method, desired parameters characterizing active and reactive power. Finally the comparison is made, taking into account resolution 108 of 1997 issued by the CREG.