The IW25 Dehumidifier by Innovative Dehumidifier Systems LLC is rated for an average power consumption of 370W (in a 80 degree, 60%RH environment). It should be noted that the higher the ambient humidity is inside the dwelling, and the size of the dwelling, will cause the IW25 Dehumidifier to run more often, thus requiring more energy. With that in mind, if the environment required the dehumidifier to operate at a 30% utilization rate (or 8 hrs per day) and the cost of electricity is 9.69 cents per KW it would cost roughly 29 cents per day to operate.