The cost to operate your model will depend on two different variables: 1.) the wattage of the model you’ve selected. 2.) the cost of electricity in your area.
A quick way to figure out the hourly operating cost is to take the cost of electricity in your area (typically measured in cents per kilowatt hour) and multiple it by the wattage of your towel warmer divided by 1000. For example, the cost to operate an Infinity Towel Warmer (a 150-watt model) in Lake Zurich, IL (where electricity costs 10.44 cents per kilowatt hour) would be less than 2 cents an hour and the formula to figure that out would look like this: $0.1044 x (150/1000) = $0.0156 per hour.