Z grill 450a - 65w on grilling mode and 10w on idle. Which is about 0.3kwh per day at full load or 12 cents for a year and 1 cent per month on average in the US with an elec rate of $0.2/kwh(national avg). The Z grill 450a is 75% more energy-efficient than a ceramic cooktop as it consumes less power even when grilling!