Analiza isplativosti primene solarnih sistema kod kupaca-proizvođača koji su domaćinstva

This paper analyses the impact of solar system installation as an application of new technologies in households, focusing on cost assessment, electricity bill savings, and investment payback period. An initial comparison of electricity bill components will be presented between consumers who are not prosumers and those who are. Subsequently, the analysis will cover the application of solar systems in prosumer households with different levels of annual electricity consumption and varying consumption ratios between higher and lower tariff rates. Six consumer groups differing in average annual electricity consumption will be considered, with two consumption ratio scenarios between higher and lower tariff rates analysed for each group. Based on electricity consumption data, the adopted annual consumption distribution by months, and solar system production models obtained using the PVGIS Online Tool, optimal installed solar system capacities for the analysed consumer groups will be determined. The analysis will include the evaluation of required investment funds, expected electricity bill savings, and investment payback periods. Special attention will be given to the impact of the consumption ratio between higher and lower tariff rates on the selection of optimal solar system capacity, as well as the possibilities of utilizing excess generated energy. The expected results should highlight the profitability and justification of the investment depending on the household's annual electricity consumption value.