Many authors in the literature have worked on models for producing PV module performance, but the question of a climate-specific model is problematic. Some studies have shown more appropriate models for any PV module technology, while others have highlighted models that are more appropriate for a given climate. The aim of this work is to evaluate our model which is base on the I-V characteristic and their accuracy has been assessed versus one-year of ground measurement from a system PV module at different times resolutions. To predict the performance of PV modules in crystalline silicone in a sahelian climate in Senegal, the results obtained experimentally and those of the model were compared. The monthly nRMSE is 17,33% during the rainy season and 17,46% the dry season. A good correlation of the model, with a coefficient of 0,88 in January and 0,94 in September.