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Employ CEC in HDTVs to meet Energy Star 3.0

Posted: 23 Mar 2009 ?? ?Print Version ?Bookmark and Share

Keywords:CEC HDTV? Energy Star 3.0? mode standby?

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 percent of an average household's electricity use, and TVs meeting these new more stringent guidelines are projected to consume 30 percent 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.

Table: The Energy Star Product criteria are listed in this table. (Click to view full image)

Wide color 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.

The table lists the Energy Star Product criteria for TVs while operating in the power-on mode. The EPA recognizes that new display technology advances in backlights and OLED displays promise to make TVs even more power-efficient. They have proposed waiting six to eight months after Tier 1 requirements (see reference table) take effect to reevaluate display technology and determine Tier 2 requirements. The EPA anticipates that future innovation in TV designs will lead to additional power savings that should be reflected in the marketplace by 2010 when the Tier 2 guidelines are scheduled to go into effect.

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