Question by Harish: How much more energy does a Plasma TV consumer compared to a LCD TV?
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?

Best answer:

Answer by Elyakim L
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.

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