Analytical assessment of the outdoor performance and efficiency of grid-tied photovoltaic system under hot dry climate in the south of Algeria

•The assessment of 2.5 kWp photovoltaic (PV) system installed in the south of Algeria.•The most appropriate and relevant performance indices were used to analyze the PV system performances.•PV system performance depend on both irradiance and module temperature.•Performance analysis exhibit high losses in PV system due to environmental factors.