ENERGY ANALYSIS FOR BAPV AND BIPV IMPLEMENTATION IN A RESIDENTIAL HOUSE IN KRAGUJEVAC

Abstract

The cost-effectiveness of installing photovoltaic panels in a residential house in the territory of Kragujevac (R. Serbia) is analyzed. By using solar to electric energy conversion (BAPV and BIPV systems) substantial electricity savings can be achieved. 3D model of the residential house is created using “SketchUp” software and “OpenStudio” plug-in is used to export the 3D model to the energy simulation software “EnergyPlus”. For BAPV installation “EXM 300/156-60” module type is used with the module conversion efficiency of 18,35%, while for BIPV installation “UL-150M-36” module is used with a conversion efficiency of 14,8%. Also, a predetermined area of the rooftop must be covered equally by both BAPV and BIPV. For the payback period, 0,2066 €/kWh (feed-in tariff) is accounted for electricity sold to the electric distribution grid and 0,052 €/kWh is used for generated electricity (green zone tariff) which is used by the electric devices or lighting in the analyzed household. Only generated electricity which is not used in the household (higher production than demand) is sold to the electric distribution grid. Generated results show that BAPV systems are generating 2610,5 kWh/a, while BIPV systems generate 1598,38 kWh/a (38,77% less than BAPV). Also, the payback period for BAPV systems is 12,33 years and the BIPV system repay their initial investment after 16,17 years (31,14% longer payback period) in the observed case for Kragujevac territory.