The thermostatic kettle has a power of 800w and a voltage of 200v, and consumes little power. 800w represents the power consumption of 0.8 kWh per 1 hour. 2 It seems that the power consumption is amazing, but because the constant temperature electric kettle is only for heat preservation, the real heating time is very short, and the actual power consumption is not directly related to its power. Thermostats don't consume much electricity. The power consumption of the thermostat used in daily life is about 1000 watt, which depends on the quality of the thermostat.