THE ASSESSMENT OF THE FUNCTIONING OF PHOTOVOLTAIC INSTALLATION UNDER SMALL HOUSEHOLD CONDITIONS
The aim of the study was to present the mechanism of operation and to assess technically and economically a typical household photovoltaic installation. The study included the data on the construction of the PV installation panels and the aspects connected with the profitability of the investment. The energy consumption and production from the existing photovoltaic installations was analysed and the project was assessed as well.
The polycrystalline panels, the monocrystalline panels and the CdTe panel were selected for the analysis (table 1). The value of the savings was calculated on the basis of the energy production from the photovoltaic installation multiplied by the average energy cost and the coefficient for the prosumers in the settlement with the distribution system operator.
The discussed photovoltaic installation used the photovoltaic polycrystalline panels which allowed for the achievement of the most beneficial yield-price relationship under Polish conditions. The economic analysis determined a degree of the covered energy demands in the discussed case. It amounted to 29,44% per year and allowed for the obtainment of the savings at the level of over PLN 1200 per year.