This depends on how regularly you use your oven and the energy efficiency of the model. This is why it’s very important to purchase a top notch oven that has a high energy rating. It significantly reduces the energy consumption, thus helping you avoid those sky high electricity bills! The Hafele Appliances range of ovens come with such an excellent A+ energy efficiency rating, which reduces the electricity consumption by almost 30% from the other A rated standard oven models in the market.