Solar energy represents a key source of renewable energy that remains significantly underutilized, despite rapid developments in this field. In this thesis, we focused on understanding and analyzing the process factors that affect the efficiency of solar power plants. Using real production data from power plants in 2023, we conducted a comparative analysis thet demonstrated the impact of key factors such as orientation, tilit, temperature and duration of solar irradiation. The work addressed the following influences on the efficiency of solar power plants: duration of solar irradiation, orientation of the plant, tilt of the plant, annual average air temperature, annual average wind speed at 10 meters above ground, altitude, height of the structure, annual number of days with precipitation over 0,1 mm, age of the plant and type of roofing. We found that the orientation and tilt of the plant significantly affect its efficiency, as do local climate conditions and geographical features of the plant's location.
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