What does an Energy Star label signify?

The Energy Star label signifies that a building meets strict energy efficiency guidelines set by the U.S. Environmental Protection Agency (EPA). This label is awarded to buildings and products that have been verified to perform significantly better in terms of energy efficiency compared to standard models. Achieving this designation indicates that the building uses less energy and produces fewer greenhouse gas emissions than typical buildings of similar size and function, making it a mark of sustainability in energy use.

The other options do not accurately represent what the Energy Star label signifies. Certification by local government entities pertains to code compliance and local building practices rather than specific energy efficiency standards. The label does not specifically focus on the use of green materials, which may address sustainability in a broader sense but not directly link to energy performance. Lastly, the International Green Building Council does not certify buildings under the Energy Star program, as Energy Star is managed by the EPA, independent of that certification body. Thus, focusing on energy efficiency is the core of what the Energy Star label represents.