To guide consumers in their choice of electrical appliances and devices, over a decade ago the European Union introduced an energy efficiency labeling scheme. This scheme gives potential buyers an idea of much electrical energy is consumed by different devices, so that they can make more informed choices.
source https://www.lifetechnology.com/blogs/life-technology-technology-news/adding-energy-cost-information-to-energy-efficiency-class-labels-could-affect-refrigerator-purchases
