A "set-top box" is a cable, satellite, Internet Protocol or other device whose primary function is to receive television signals from a specific source and deliver them to a consumer display and/or recording device, such as a television or DVR.
ENERGY STAR qualified set-top boxes are on average 45 percent more efficient than conventional models.
If all set-top boxes in the U.S. met ENERGY STAR requirements, consumer energy cost savings would grow to about $3 billion each year, reducing greenhouse gas emissions equivalent to those from about 3 million cars.
Current Specification Effective Date: Version 3.0: September 1, 2011
Version 3.0 ENERGY STAR Program Requirements for Set-top Boxes became effective on September 1, 2011. The revised requirements include more stringent performance levels as well as incentives for operation in Deep Sleep Mode (less than or equal to 15% of power in On Mode) and use of thin clients in multi-room setups.