Komparativna analiza tehničkih, ekonomskih i ekoloških pokazatelja različitih modela prozjumera sa fotonaponskim panelima na primeru zgrade Tehničkih fakulteta u Beogradu

The paper analyses different prosumer models with photovoltaic (PV) panels as local sources of electricity. The calculations were performed on the example of the building of the Technical Faculties in Belgrade, for which data on consumption and available roof surfaces for the installation of photovoltaic panels were available. The analyses included three models of prosumers. The first model assumes that the maximum available power of the PV panel production does not exceed the corresponding power consumption. The second model assumes that the maximum available power of PV panel production can be higher than the peak power of the building, but the production is limited by prohibiting counter flow of power. The third model assumes that the installed power of the PV panels is equal to the approved power, whereby it is assumed that the user distributes excess energy to the distribution network. For all analysed models, the calculation of the installed power of PV panels and inverters was performed, as well as the economic valorization through various indicators. The optimal models were considered based on the obtained calculation results and carbon dioxide emission reduction was calculated for each of the solution. It has been shown that investing in prosumers designed according to the optimal first and second model is already profitable in Serbia, while to encourage the development of prosumers according to the third model, it is necessary for the government to create appropriate financial instruments.