U.S. Department of Energy News, Dec. 23, 2013.
http://energy.gov/articles/us-energy-department-pay-television-industry-and-energy-efficiency-groups-announce-set-top

"The U.S. Energy Department, the Natural Resources Defense Council (NRDC), the American Council for an Energy-Efficient Economy (ACEEE), the Appliance Standards Awareness Project (ASAP), the Consumer Electronics Association (CEA)® and the National Cable & Telecommunications Association (NCTA) announced non-regulatory energy efficiency standards for pay-TV set-top boxes that will result in significant energy savings for more than 90 million U.S. homes. These new standards – developed through a non-regulatory agreement between the pay-TV industry, the consumer electronics industry and energy efficiency advocates – will improve set-top box efficiency by 10 to 45 percent (depending on box type) by 2017, and are expected to save more than $1 billion on consumer energy bills annually."