NRDC TV Energy Efficiency Research
TV International Stakeholder Meeting
San Francisco, California
June 28, 2005
Peter Ostendorp
Research Analyst
Ecos Consulting
postendorp@ecosconsulting.com
(970)259-6801 ext. 307
Little information on TV power use
What test methods are available?
Measures
black and
white CRTs
Measures
color CRTs
Measures
new display
types
Reflects real
world power
consumption
DOE
method �
JEITA
method �
�
IEC 62087 � � �
Our Field Test Method
• Measured TV power use in
retail setting with WattsUp?
Pro power meter
• Used showroom screen
settings
• Measured average power
over 2 minutes using
standard test clip
• Digital Video Essentials
video clip used as
reference material
Power Consumption in Direct View and
Projection TVs (NRDC/Ecos)
0
50
100
150
200
250
300
350
400
450
500
0
500
1000
1500
2000
Active Mode Power (watts)
Plasma
Projection
LCD
CRT
Screen Area (square inches)
0
50
100
150
200
250
300
350
400
450
500
0
500
1000
1500
2000
Active Mode Power (watts)
LCD
CRT
Power Consumption in Direct View and
Projection TVs (NRDC/Ecos and AGO)
Screen Area (square inches)
Plasma
Projection
How do we fairly gauge efficiency in TVs?
Lumens/watt
kWh/year
watts ?
in2
Different Trends for Different Technologies
Power Consumption Trends
in Direct View and Projection TVs
0
50
100
150
200
250
300
350
400
450
500
0
500
1000
1500
2000
Active Mode Power (watts)
Screen Area (square inches)
Direct View
Projection
0.35 watts per
square inch
0.15 watts per
square inch
Room for efficiency improvements in all technologies
0.0
0.1
0.2
0.3
0.4
0.5
0.6
CRT
LCD
PDP
Efficiency (watts/square inch)
Australia results (n=104)
Projection
NRDC/Ecos results (n=25)
Future technologies provide hope
of increased efficiency
Screen size (inches)
0
10
20
30
40
Average Power Consumption (watts)
1
10
100
1000
CRT
LCD
Color FED
Itoh S and Tanaka M. “Current Status of Field Emission Dis