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How Much Electricity Does a 32" Sharp LCD TV Use?
LCD TV's are extremely popular at the moment as they are cheap and affordable. We tested the 32" Sharp GD8E LCD TV with built in digital television receiver.In Stand-by; 3W
Digital TV; 85 - 87W
Non-Digital TV; 155 - 160W
For information on the electricity consumption of other products check out "How Much Electricity Does a ... Use?"
Please Note the energy use figures are taken from an energy monitor and are not scientifically analysed, therefore the range and margin of error is greater. If you would like a specific product tested let us know and we will endeavour to check it out.
6 comments:
Hi, is the watts per hour?
Watts = Joules per Second
Watts are Volts times Amps. Once you know the watts, you can predict the impact on your energy bill, like this: if you run the TV for 1 hour and it uses 125 watts, that means you burned 123 kilo-watt hours (125 kwh).
Now look on your energy bill, and it will say how much a kwh costs. usually it's between $0.10 and $0.12 (10 cents to 12 cents) that I've seen anyway. Let's say it is 11 cents per kilo-watt hour. So if you watch tv for 8 hours and it uses 125 watts, then the dollar cost to you is 125kwh * 8h * 11 cents/kwh = $1.10
Correction - I messed up the math a little bit in the previous post. A kilo-watt is 1,000 watts, so if your 125 watt TV is run for 8 hours, then it uses 1.0 kilo-watt hours of energy. That's 1,000 watts for one hour, or 125 watts for 8 hours.
And then 1 KWhr times 11 cents/KWhr equals 11 cents. (Not $1.10) So if you run your TV 12 hours per day at 125w, that's (12 * 125 * 30) = 45,000 watt-hours which equals 450 KWHr times 11 cents per KWHr = 4,950 cents = $50.00 per month.
Another example is Electric Heaters. They usually take 1,500 watts, if you run it for 24 hours, that 36,000 watt-hours which equals 36 kilo-watt hours. At 11 cents per KWhr, that's $3.97 (per day) or $120 per month to heat one room! Have 4 in your house and that's $480/month.
Sorry, it's way too early in the a.m. --- 45,000 watt-hours divided by 1,000 equals 45 kilo-watt hours (not 450 KWHr) which times 11 cents/KWHr = $4.54, and again that's for the32", 125 watt TV being on 12 hours per day for a month (30 days).
Just to make things simpler:
Let's say your TV uses 125 watts, that's .125 Kwh, so if you pay 11 cents per Kwh, it's (0.125 * 11 cents) 1.375 cent an hour. So using this device will cost you 1.375 every hour. Now, if you watch TV 2 hours a day, for a month of 31 days, it will cost you (31 days * 2 * 1.375) 0.85$ for the whole month.
Electricity is still relatively cheap, and although we should all moraly try to consume less, it doesn't make much of a difference on your electricity bill. Heating and air conditioning, which uses huge amount of energy, *does* make a difference, so using electronic thermostats and insulating your windows can make a good difference on your bill.
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