How much more energy does a Plasma TV consumer compared to a LCD TV?
Saturday, February 20th, 2010 at
4:19 am
How much more energy does a Plasma TV consumer compared to a LCD TV? Everyone says Plasma consumes more energy than a LCD, but by how much? Twice as much as a LCD? Newer versions of plasmas are now ‘Energy Certified”, does that mean they still consumer more energy than LCD, but overall, does not take that much compared to a traditional CRT TV?
Tagged with: compared • consumer • energy • more • much • Plasma
Filed under: 55-Inch Question & Answer
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A CRT TV uses a lot of energy. The initial power up takes a big jolt and from there it sustains itself while wasting more energy. Think of it as a Incandescent light bulb, putting out heat. When that wasted energy on heat could be used to help output more lumens. I don’t know much about plasmas because I don’t think they will be around much longer, once laser diode TVs are developed that is. Laser diode TVs are still being researched, but once created they will be as brilliant as a plasma and as long lasting as a LCD TV (liquid crystal display).
To find out the wattage you need to use the equation P=I*E
“P” is equivalent to Power “I” is equivalent to Current and “E” is equivalent to voltage. “P” is expressed in Watts, “I” is expressed in Amps and “E” is expressed in Volts.
Standard wall outlets put out about 120 Volts of Alternating current. All you need to know is how much amps this unit consumes. Look on the back of the TV and it should give you an amp reading. Multiply this number by 120V and you should get your answer in Watts. Keep in mind that Sometimes Amps are expressed in mAh (milli amperes)
So an old CRT TV would consume a lot more power compared to a LCD flat screen tv of the same size. An LCD is energy efficient just like those weird Compact Flourescent Light bulbs.
This is from:
http://reviews.cnet.com/green-tech/tv-power-efficiency/
Power consumption compared
TVs:
Average plasma: 339 watts
Average rear-projection: 211 watts
Average LCD: 213 watts
Other AV gear:
PlayStation 3: 197 watts
Xbox 360: 187 watts
Average PC: 78 watts
DirecTV HR20 DVR: 33 watts
Nintendo Wii: 19 watts
Slingbox: 9 watts
Wireless router: 7 watts
HOWEVER, the newer energy certified plasmas use about the same as an LCD of similar size.
Traditional CRT and ‘old’ Plasmas are energy hogs. But what does that really end up meaning? Even poor performing sets from those types will only cost you like $40 a year more than an LCD. And that’s like the worst case. So even a so-so set, and you’re maybe looking at only $20 difference (per year). So its not really a huge deal.
As has already been mentioned, there are now Plasma sets which are energy star products. They can compete with the LCDs in terms of power consumption. Most of the good brands’ latest models fall under this category (Panasonic, Samsung).
But technology stereotypes only hold so true anyway. Plasma or LCD doesn’t really matter. Specific model number matters most. Not all models, other either technology, are made equal. There are LCDs that are power hogs.
Depending on how much usage you have on the tv. If you watch the tv for 4 hours a day 7 days a week for a year you will probobly save $20 on an LCD. Remember, all electronic consumes energy even if they are turned off, and using the remote to power it back on (stanby mode).
CRT-tv does consume more energy that any other tv’s in the market but they are also gone from the store inventory. Don’t worry about it, you won’t see much on your electric bill, unless you watch alot on your tv.
well ive a pana tvp-42 g10 plasma w freeview,freesat and an analogue tuner , it burns 200w while its on , 0.7w standby , if thats any help