The amount of power a commercial coffee machine uses can vary depending on several factors, including the type of machine, the size of the machine, and the features it has.

On average, coffee machines for commercial use can use between 1500 to 3500 watts per hour. This means that a machine that runs for 8 hours a day would consume around 12,000 to 28,000 watt-hours per day, or around 360 to 840 kilowatt-hours per month.

However, these are rough estimates, and the actual power usage of a commercial coffee machine will depend on a number of factors, including the specific model, the brewing method, and the frequency of use. To get a more accurate estimate of the power usage of a specific machine, you should consult the manufacturer’s specifications or consult with a professional electrician.