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MEPS − Televisions April 2005
Page 15
A study produced for the Energy Efficiency and Conservation Authority by
Wise Analysis Ltd
4.2 Trends in TV Power Consumption
No available measurement data has been obtained for New Zealand. The energy consumption
characteristics of TVs will however be similar to those measured in Australian store surveys
and intrusive surveys commissioned by NAEEEC4 over the last four years, and previous
studies of residential appliances are summarized below. The report cautions that the data
“should be treated with careful optimism as many factors influence the survey and only future
monitoring will reveal if in-use consumption is actually trending downwards”.
The various television types are discussed below.
(a) Standard CRT Televisions
The data in MEPS-TV (Fig 2ff) shows that the majority of televisions use between 50W and
100W although 2003 saw an increase in those using less than 50W in-use. Average in-use
power consumption fell significantly from 2001 from 2002 to 2003 and 2003-04 from around
88W to 79W, a reduction of some 10%.
As well from 2001 to 2004 average standby power fell from around 6W to 4.1W a reduction of
some 30%. In the off mode all TVs consumed less than 1W with the vast majority having zero
consumption.
(b) LCD Televisions
The data in MEPS-TV (Fig 4ff) was based on limited numbers of units measured, apart from
2003-04. Thus no trend was evident. The average in-use consumption was 56.4W, ranging
from 24W to 134W. Standby showed large differences ranging from 0.6W to 18.5W, averaging
2.8W. Data from the European website Market Transformation Program
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for LCD TVs
indicate that for in-use consumption best practice is currently (2003):
Table 6: Best practice for LCD TVs
In-use consumption Watts Standby Watts
Best Practice 35 Best Practice 1
Average 50 Average 3
Maximum 75 Maximum 5
(c) Projection Televisions
The data in MEPS-TV (Fig 7ff) shows an average in-use power of 156W ranging from 94W to
223W. Standby averaged 7.7W ranging from 0.4W to 45W. The average off mode
consumption was 0.1W.
(d) Plasma Televisions
Plasma TVs use considerably more energy than other types of TV. The data in MEPS-TV (Fig
9ff) showed average in-use consumption in 2003-04 was 150W, down from 292.4 in 2003. The
maximum energy used showed a similar decline. Standby averaged 2.4W, ranging from 0.7W
to 4.4W. Some 25% of sets did not have an on/off switch.
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URL − http://www.mtprog.com