Samsung Televisions Technology Scope for Energy Efficiency, Set top boxes, In-use W 12 23 17 15

MEPS − Televisions April 2005

(e) Set top boxes

Figures for US set top box power usage were given in Rainer et al 2004.12

Table 7: Average Set Top Box Power Levels

Type	Standby (W)
Analogue cable	10
Digital cable	22
Satellite	16
Internet Protocol TV	14
Digital TV adaptor	8

In-use (W) 12 23 17 15 17

They say that “Reducing the energy use of set-top boxes is complicated by their multiple complex operating and communication modes. Although improvements in power supply design and efficiency will be effective in reducing STB energy use, the major energy savings will be obtained through the use of protocols and software to better control the device (energy management).”

Summary − TV energy consumption

Overall television energy consumption is around 320 GWh, and could reduce over the next 5-7 years by 20% if a MEPS regime is introduced. Although there is considerable variation between manufacturers, energy consumption of various TV types is likely to continue to fall as technology improves.

5 Technology Scope for Energy Efficiency

A 1998 report by Huenges and Siderius13 stated that TV in-use energy consumption can be reduced through two options:

•Options regarding components: o Use less

o Use more efficient

o Use specifically designed components

•Options regarding design (hardware and software) o Lower voltages

o Fewer voltages

o Power management

At that time the data showed a trend to decreasing power consumption only for smaller TVs (below 49cm). For medium and larger sizes there was still a large variation. Because of their short life times and high ownership growth rates, STBs perhaps also provide a great opportunity for significant short term energy savings.

12“What's On the TV: Trends in U.S. Set-Top Box Energy Use, Design, and Regulation” Rainer L, Thorne Amann J., Hershberg C., Meier A., Nordman B, IEA Conference paper URL − http://www.iea.org/dbtw-wpd/textbase/papers/2004/am_stb.pdf

13Huenges Wajer B.P.F., Siderius P.J.S., Analysis of Energy Consumption and Efficiency Potential for TVs in on-mode, EC report November 1998 http://www.vhknet.com/download/TV_on-mode_final_report.pdf

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A study produced for the Energy Efficiency and Conservation Authority by

Wise Analysis Ltd