The energy consumption of a TV is a topical issue for many, because in some homes it works for days. The question arises whether you are overpaying much for the long-term operation of the TV, or whether it spends so little that it is not noticeable at all. Most likely you got here for the reason that you could not find the consumption value in the technical specifications. This is not surprising, because power consumption is not considered an important parameter. Based on the figures known to us, we will understand the real energy consumption per hour, day, month or even per year.
What determines the power consumption of TV?
In fact, a lot of factors affect how much energy a TV consumes in specific operating conditions. All this is difficult to translate into numbers, but we will try. Keep in mind that these are quite approximate values, but they will help you navigate.
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Features affecting consumption:
- screen diagonal . With such technical characteristics, a TV with a diagonal of 43 can consume an average of about 70-90 W / h, while a model with a diagonal of 75 inches is already about 120 W / h.
- Brightness . For example, we use Samsung UE75AU7570 75 inches. At medium brightness settings and moderate contrast, consumption per hour is 143 watts. If you turn on the brightness and volume to the maximum, the consumption increases immediately to 260 W / h.
- Sound volume . Speaker power is usually 10 or 20 watts. At low volume, not much power is used. Consumption is approximately equal to the percentage equivalent of the volume level of the speakers.
- Energy class . Since televisions are not considered large consumers of electricity, they usually do not have stickers on them, like refrigerators or washing machines, but they have their own class. It should be listed in the documentation. The more pluses after A+, the higher the energy efficiency. In other words, efficiency.
Interesting fact! In standby mode, the power consumption of almost all models does not reach even 1 watt. Typically, 0.5 Wh is consumed to power an LED. This is a measly 4.4 kW per year.
TV average power consumption
Unfortunately, not everyone can measure the consumption of any appliance at home due to the lack of tools. A wattmeter is usually included in the multimeter, so if you have one, just connect to the contacts on the outlet with the TV turned on or on the extension cord, and you will find out the actual power. If you don’t want to bother in this way to find out the number of watts consumed, just look at the average calculation for the parameters below.
Old models with a kinescope
Outdated “humped” TVs with a kinescope usually consume from 60 to 100 W / h, depending on the diagonal and model. We take as a basis that TV works about 6 hours a day, the rest of the time is in standby mode. In this case, the cost will be as follows:
- per hour – 60-100 W;
- per day – about 0.5 kW;
- per month – about 15 kW.
To the above value per month, it is worth adding about 1.3 kW of consumption in standby mode. Thus, the total consumption in the average operating mode is 16.3 kW. If the TV works non-stop for 15 hours, then the numbers will be different – 36 kW.
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LED and LCD
The run-up of consumption of liquid crystal TV is very large. Much depends on the number of functions, technical equipment, screen size, mode of operation and other factors. We will take approximate values for a standard 40-43 inch TV.
How much does a 43 inch LCD TV consume:
- per hour – 60-80 W;
- per day – 420 W (with 6 hours of active work);
- per month – 13.5 kW (together with consumption in standby mode);
- per year – 162 kW (although according to the EEC standard – 93 kW, but in reality it turns out higher).
Important! For comparison, the average consumption for this type of device, but with a larger diagonal: 55 inches – about 100 W / h, 75 – 145 W / h. You can already recalculate for a day, month or year yourself, but in general it is 1.5-2 times more.
If you are used to high volume, maximum brightness and the use of all embedded technologies (auto frame rate, 4k resolution, etc.), the consumption will increase dramatically. Up to approximately 120 W / h per hour, which is already 0.72 kW per day, and 22 kW per month. You also need to consider that the TV can work more and less on different days of the week and seasons.
Plasma TVs consume relatively a lot of energy compared to previous models. A TV with a similar diagonal consumes twice as much electricity. Approximate consumption of a 43″ Plasma TV is:
- per hour – 150-190 W;
- per day – 1 kW;
- per month – 31-32 kW.
It’s a lot or a little – already decide for yourself, multiplying by the cost of electricity in your region and the number of TVs in the house.
See also: Plasma TV vs. LCD: what to choose?
How to save?
It should be noted that significant savings per month are unlikely to be achieved, but per year it is quite possible to save up to half of the energy consumed.
How to reduce the power consumption of the TV:
- Turn it off when the TV is not needed. Many people have a habit of leaving it when they go to another room. By rebuilding yourself, you can reduce consumption a little.
- Put on a timer. Those who like to sleep to the sound of TV will save a lot if they set timers for 30 minutes.
- Use eco or night mode. In it, the brightness will become less, as will the load on the eyes, the power grid at home. Especially useful for those who watch TV for a long time.
However, unplugging the TV from the outlet does not make much sense. As we wrote, the savings will be no more than 3 kW per year.
Thus, the TV consumes not so much electricity compared to some other devices, but not a little. Especially when you consider that it is designed for long-term operation, while other powerful devices are designed for short-term operation. The same hair dryer does not need to be operated for more than 10-15 minutes a day, and the TV works for hours. Perhaps you should think about saving energy on this consumer.