The Influence of Solar Insolation Variability on the Efficiency of Photovoltaic Systems in the Conditions of the South of Tajikistan

Under the conditions of high solar activity in the Khation region, it becomes urgent to improve the efficiency of photovoltaic systems. The aim of the study is to evaluate the influence of solar radiation and temperature variability on the output power of solar panels. The experiment was carried out in an autonomous solar power plant with a capacity of 10 kW, using a lux-meter and an infrared thermometer to measure insolation and temperature. Correlation analysis was carried out, confirming the direct relationship between the level of incorporation and output power, as well as the influence of temperature on the decrease in efficiency. The results show pronounced daily and seasonal fluctuations of solar radiation, which have a significant influence on electricity generation. The practical importance of the work is to develop recommendations on the location, orientation and operation of solar plants to increase their productivity in Tajikistan.