Noise can be a factor when using a generator, especially if you’re renting it for an event like a music festival. Generally, the more power a generator can produce, the louder it’s going to be. A 20 kW / 25 kVA generator typically produces sound levels of around 62 dB, while a 56 kW / 70 kVA generator produces sound levels around 65 dB, and a 120 kW / 150 kVA generator produces sound levels around 66 dB. For reference, 60 dB is about the same level of noise as a conversation or fan running. 70 dB is about the same as a dishwasher or washing machine running.