In the final paper, an analysis of the electricity production of the laboratory solar photovoltaic system was performed, which can operate in two modes, fixed tilt and tracking, where it follows the path of the sun. In the theoretical part of the final paper, the importance and purpose of nearly zero energy buildings (nZEB) and the use of solar energy are explained. The fixed tilt and tracking method of setting up photovoltaic systems are described, while the tracking system is further discussed as single-axis and dual-axis systems. In the practical part of the final paper, a laboratory model of the solar photovoltaic tracker with all associated elements is presented, and the mode of operation and application of each part is explained. A simulation of the production of electricity from the photovoltaic system was performed using the online computer program PV-GIS, for fixed and tracking mode of operation, while an analysis of the obtained simulation results was presented. Finally, measurements were made of the operating parameters of the solar photovoltaic tracker working in two modes (fixed tilt and dual -axis tracking), and the obtained results were compared.