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How Many Watts Does a TV Use – The Answer in Great Detail

Using television to elevate your home entertainment is one of the indispensable activities in everyone’s daily life. However, users often have seemingly harmless habits that make their monthly electricity bills increase significantly. So, you need to know the answer to the question: “how many watts does a TV use?” to make the best out of your TV.

Let’s dive right in!

How Many Watts Does a TV Use

“How many watts does a TV use?” – The answer depends on many factors ranging from usage habits to manufacturer’s technology and ambient temperature. Capacity is a parameter that tells us how much power is consumed by the device. In other words, how much electricity will it use in a month to calculate how much electricity the family has to pay?

To calculate the amount of power consumption (W / h or KW / h) per month, users need to know the power consumption index of the equipment (which is specified by the manufacturer on device packaging) and the time to use the product.

Plasma TV

This is the generation of TVs using old plasma technology and consuming a lot of electricity.

One problem with a Plasma TV is that each pixel (pixel) is a separate light source, so as the resolution increases, for example, from 720p to 1080p, power consumption also goes up. The intensity of light from each pixel must also increase to brighten the entire image.

When using the voltage meter, the results obtained show that the Plasma TV consumes between 250 and 350 Watt when the parameters are set to standard. The reason for not having a fixed power level is because when displaying a white or light color image, a Plasma TV will consume more power than when displaying a dark black image or dark colors.


The power consumption of LCD TVs and OLEDs is much lower than the old generation plasma TVs. These 2 TVs offer users a more economical choice.

On average, a TV with a screen size of 32 inches typically produces about 40 watts. Thus, if the TV is turned on continuously for 25 hours, it will consume 1 kWh. Meanwhile, using a 40 inch 65W TV for 15.4 hours will take up to 1 kWh.

However, users should also note that OLED TVs also consume more power than LCD TVs.

This is due to the different techniques of the two screens.

LCD screens work by using light from luminescent backlight to indirectly illuminating liquid crystal particles (these crystal particles can change color based on the backlight).


LCD TV saves more power than the OLED TV/ Ph: Sony.com

Meanwhile, OLED is a display technology that uses itself as self-illuminating “pixels” to represent an image’s ability to display. This is completely different from the indirect lighting mechanism, thanks to the backlit LCD technology.

Because more pixels glow, OLED consumes almost twice as much electricity as an LCD TV if at the same brightness.


OLED TV consumes double electricity compare to LCD TV/ Ph: Mediamart.vn

How to Find The Energy Specs of The TV

When buying a television, TV Mates often see the wattage, or energy efficiency index, shown on a television’s specifications sheet or printed on the product label on the back of the device.

The energy efficiency index on the television is calculated by the ratio of the energy input to the device’s actual power output. This indicator helps users to know the difference in the power level that the TV has used compared to the original estimated power level. The closer the energy efficiency index on a TV gets to 1, the less power it consumes.

Putting the energy index on the labels will help you compare the power consumption of different TVs. From there, it allows consumers to choose quality products with less energy consumption easily.

How to Decrease TV’s Energy Consumption

Lower the brightness of the TV screen

Screen brightness is a big factor in power consumption.

Some modern TVs will have the ability to manually adjust the TV screen’s brightness depending on the strong/low light in the room. If your TV does not have that automatic feature it is also okay, you can go to the settings to manually customize the sharpness, color, contrast, and so many more right in the menu bar to get beautiful pictures and save power.

Another great tip is that you can reduce the light around the TV to a moderate level by turning the electric lights on and off. Thereby, we can help the TV bring a clearer, more beautiful picture while the brightness of the backlight can be reduced.

Turn off the TV when not in use.

You should not just turn off the TV via the remote control, as the TV will now switch to standby mode. Even though the TV is no longer in use, the TV will continue to use electricity. If you turn on a 21-inch TV with a capacity of 220W for 4 hours/day and turn it off with the remote control, the power consumption is 5.4kWh / month.

To save electricity and prolong the TV’s life, please turn off the power by pressing the power button on the machine when not in use. Besides, this can also reduce the risk of fire to ensure family safety.

Watch TV together

Today, many households have several televisions in the house, one in each room. Therefore, when all TVs are on to serve the different needs of each member, it is consuming a lot of electricity.

Watch TV together

Family should watch TV together/ Ph: Pinimg.com

You should sit together and watch the same TV. This is to save electricity and a great way to bond between family members after a hard-working day.

In Conclusion

TV is an essential device for your family, but it will cost you a considerable amount of money each month if not knowledgeable. How many watts does a TV use? Knowing the answer helps you quantify and plan savings options. See also TV review from TVMates.com

Thank you for reading, and don’t hesitate to share this with your family and friends so that they can also use TV effectively.

He is a Blogger, Tech Geek, SEO Expert, and Designer. Loves to buy books online, read and write about Technology, Gadgets and Gaming. you can connect with him on Facebook | Linkedin | mail: srupnar85@gmail.com


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