A group of researchers has claimed television accessories can end up using more energy than a household refrigerator.
Fridges and freezers are known as some of the most energy-hungry appliances in people's homes, but according to a group from the US National Resources Defence Council (NRDC), they are not the worst offenders.
In America there are 160 million set-top boxes, which consumed almost 27 billion kilowatt-hours of electricity last year.
When matched with a high definition (HD) video recorder, a HD set-top box can consume 446 kilowatt-hours of power over a 12 month period. That's higher than a new Energy Star-branded refrigerator (415) and over 60 per cent more than an Energy Star-branded 42-inch LCD (275).
"Better designed pay-TV set-top boxes could reduce the energy use of the installed base of boxes by 30 percent to 50 percent by 2020," said the NRDC.