The Energy Efficiency Rating is a measure that indicates how effectively a device or building uses energy. It helps consumers understand the energy consumption of appliances, heating systems, and homes. Ratings are often displayed on labels, making it easier to compare products and choose more energy-efficient options. Higher ratings typically mean lower energy costs and reduced environmental impact. For example, appliances with a high Energy Star rating consume less electricity than those with lower ratings. By selecting energy-efficient products, individuals can save money on utility bills while contributing to a more sustainable future.