The amount of electricity that The Edge Tub uses is very dependent on the ambient temperature, the set point of the water temperature, if it is placed in direct sunlight, and how often it is changed from cold to hot or vice versa, and local electricity rates. In addition, the unit is capable of being programmed to minimize the amount of time it is at the coldest (or hottest) temperature which saves significant energy consumption. In general, we expect costs to be less than $1 per day.