SIMULATION OF PHOTOVOLTAIC SYSTEMS ELECTRICITY GENERATION USING HOMER SOFTWARE IN SPECIFIC LOCATIONS IN SERBIA

In this paper basic information of Homer software for photovoltaic system electricity generation, NASA Surface meteorology and solar energy database, RETScreen, PVGIS and HMIRS (Hydrometeorological Institute of Republic of Serbia) solar databases are given. The comparison of the monthly average values for daily solar radiation per square meter received by the horizontal surface taken from NASA, RETScreen, PVGIS, and HMIRS solar databases for three locations in Serbia (Belgrade, Negotin, and Zlatibor) is given. It was found that the annual average values of daily solar radiation taken from RETScreen solar database are the closest to the annual average values of daily solar radiation taken from HMIRS solar database for Belgrade, Negotin, and Zlatibor. Monthly and total for year values of electricity production of fixed on-grid photovoltaic system of 1 kW with optimal inclinated and south oriented solar modules, in Belgrade, Negotin, and Zlatibor using HOMER software simulation based on data for daily solar radiation taken from NASA, RETScreen, PVGIS, and HMIRS databases are calculated. The relative deviation of electricity production of fixed on-grid photovoltaic system of 1 kW using HOMER software simulation based on data for daily solar radiation taken from NASA, RETScreen, and PVGIS databases compared to electricity production of fixed on-grid photovoltaic system of 1 kW using HOMER software simulation based on data for daily solar radiation taken from HMIRS databases in Belgrade, Negotin, and Zlatibor are given.