Photovoltaic can convert sunlight into DC electrical energy. With the help of an inverter, DC electrical energy that is produced by photovoltaic will be converted into AC electrical energy. However, this inverter technology produces disturbance in frequency range of 9 kHz-150 kHz due to the switch of frequency inverter. In this research, the disturbance measurement on the off grid photovoltaic system with Picoscope 3425 device was conducted. Based on the measurement result, the highest disturbance value was at the frequency of 74 kHz. The sequence of electrical loads with the highest disturbance value at irradiance of ± 200 W/m2, ± 400 W/m2, and ± 600 W/m2 were inductor, capacitor, and resistor. Whereas, the sequence of electrical loads with the highest disturbance values at irradiance ± 800 W/m2 and ± 1000 W/m2 were resistor, inductor, and capacitor. This research indicates that the higher the solar irradiance exposed to the photovoltaic, the higher the voltage disturbance generated from the output side of inverter.