average usage of ovens
In addition to traditional uses, convection ovens are used for nearly all types of food preparation, including foods typically prepared using other types of appliances (e.g., griddles, fryers, etc.). Commercial ovens that have earned the ENERGY STAR are about 20 percent more energy efficient than standard models. Electric-both full-and half-size, and gas convection ovens can earn the ENERGY STAR by meeting minimum cooking energy efficiency, as well as a maximum idle energy rates.
The federal government currently has no energy efficiency standards for microwave ovens, either in standby mode or in operating mode. According to a study by researchers at the Lawerence Berkeley National Laboratory, the average standby power use for microwave ovens is 3.08 watts (27 kWh per year). Measured values range from 1.4 watt to 4.9 watts.