Energy Star is an international certification drafted by the Environmental Protection Agency(EPA) and the Department of Energy. It's a standard that pushes a 20–30% reduction in energy use. Before 2010, the certification had a voluntary labeling program, which underwent self-certification. The U.S. Government Accountability Office actually made a very fascinating report on how this was liable to abuse, and now today certification is only done through an approved third-party. The Energy Star certification covers a variety of consumer products, with different specifications to cover computers, servers, appliances, etc. If Energy Star increases their certification standards, all products are to be re-evaluated or must remove the Energy Star label. Companies with Energy star certification are spot audited.
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