In normal operation and in general, the solar panels do not generate noise, as they are manufactured and designed to be noise free equipment, especially in night time, but even at day time where the sun hits the solar panel and it works to generate electricity, there will not be a noise.
The solar panel is a stationary equipment, it does Not move and even it is attached to any kind of moving part, they are very quiet when moving.
Once exceptional for such fact, is that for only some kinds of solar panels, they produce a hum noise during the day time when they powered by the sun, but this is Not usual, and the hum noise is usually not loud at all, it’s barely noticeable. You may only notice such noise if you are very near from the solar panel, say within 15 meter or less.
So, now we can judge that the solar panels as a main component of the solar system are Not a source of noise, but there could be other components in the solar system generating such noise, like the solar inverter.
The solar inverter will be the source of the hum noise, as it works in converting DC power supply to AC power supply, so you can run your household appliances and other electrical equipment.
Not all solar inverters brands hum, as for high quality and good brands, there will Not be a generated hum noise, and honestly even there will be hum noise it will not be loud and not disturbing at all, it’s a soft hum.
If you see that solar inverter hum will affect you badly, then you can place your solar inverter in closed place like garage or so, so it does Not bother you anymore.
The hum noise may happen for central solar inverter and string solar inverter, but it should not happen in solar micro inverter.
At the end, if you hear a noise from the solar panels or solar inverter, and you feel that this noise will be disturbing, you have to contact your solar system installer or manufactures for additional recommendation.
