The report presents the study of the electrical parameters (P, Q, S, cos φ, harmonic pollution, etc.) of a modern LED street luminaire. For the purpose of the study, an LED streetlight luminaire with COB-LED and a glass optical system was selected. The electrical power of the luminaire is 30 watts, the power supply voltage is 220 volts, the driver is on reputable manufacturer. The luminaire has been studied for a long period of operation for a period of 1 month. To measure the data, a power network analyzer with very good accuracy and the ability to record the measured parameters is used. The report presents the results of the measurement of the LED illuminator and the processing of the received data. There are made appropriate conclusions from the study.