ENERGY STAR is a US government-backed program run by the Environmental Protection Agency and Department of Energy. It focuses on energy efficiency and strives to provide information that consumers and businesses can use to make informed decisions.

It’s probably best known for its voluntary labelling program for consumer goods, but it also operates Portfolio Manager, an online energy tracking and benchmarking tool for businesses, commercial and industrial buildings, and multi-family housing.

The Energy Star Score is a measure of how well a property is performing relative to similar properties. Scores are based on data from national surveys on building energy use and range from 1 to 100, with 100 representing the best performers and 50 indicating the national median. Scores account for difference in size, location, and operational conditions.