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Raising the bar for HDTV energy efficiency

Posted: 28 Jul 2009     Print Version  Bookmark and Share

Keywords:HDTV power consumption  energy efficiency  Energy Star 

On November 1, the Environmental Protection Agency (EPA) launched its revised Energy Star requirements for TV sets sold in the United States. Version 3.0 of this specification now requires TVs to meet specifications for both active and standby power consumption to carry the Energy Star Logo. TVs in the U.S. currently consume about 4 per cent of an average household's electricity use, and TVs meeting these new more stringent guidelines are projected to consume 30 per cent less energy. According to the EPA, if all TVs purchased in 2009 were to meet these new standards for power efficiency, the savings in greenhouse gas emissions would be equal to removing one million cars from the road.

The revised Energy Star requirements for TVs were developed by the EPA in consideration of several key technologies driving TV design today. Since different types of display technologies such as LCD, CRT, plasma, OLED and rear-projection all serve the same fundamental purpose, ver. 3.0 testing criteria were designed to be technology-neutral. This allows consumers, when comparing several Energy Star TV sets, to be confident that they are equally energy-efficient and that the meaning of the label is consistent across display technologies.

Wide colour gamut and motion blur improvement are features that were considered for additional power allowance, but the EPA found that they had a minimal effect on power consumption compared with a TV's overall power budget. TVs with automatic brightness control, which have lower power consumption in low ambient light conditions, were considered in the total power calculation formula and are also noted on the Energy Star Product List.

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