What is an Energy Star rating?

An Energy Star rating refers to a label that indicates a building's energy performance. This rating system helps consumers, building owners, and developers understand how energy-efficient a building is compared to other buildings of similar size and function. The Energy Star certification is awarded to buildings that meet strict energy performance standards, indicating that they use less energy, typically resulting in lower utility costs and reduced greenhouse gas emissions.

Other options, while related to energy in some capacity, do not accurately reflect the purpose of the Energy Star rating. The measure of aesthetic design is not part of this rating, nor does it relate to a certification focused on renewable energy use. Additionally, while energy-efficient appliances can earn the Energy Star label, the primary focus of this question is on the rating applicable to overall building performance rather than appliances alone.