How Many Watts Does a LG TV Use? [77 TVs Reviewed in 2023]

LG TV Wattage, Power and Electricity Consumption Explained

With rapidly-rising electricity prices, before making a purchase you might be asking yourself the question, “How many watts does a LG TV use?”

It would be unusual for that to be the first thing on someone’s mind when purchasing a TV, but the lifelong expense of powering LCD TVs is something that should be considered when picking the TV size, resolution and features as it can get expensive over the years.

To help answer the question about LG TV wattage, we reviewed and analyzed 77 LG TVs. We will provide the average power consumption numbers for the TVs, and we will show you how much energy the TVs can use in a year.


  • On average, LG TVs use 119.6 watts when in On mode and 0.5 watts when in Standby mode.
  • LG TV wattage varies from 27 watts for a 32 inch TV all the way up to 308 watts for a 88 inch TV.
  • LG LCD TVs use 221.7 kWh of electricity per year, on average.
  • Yearly TV energy consumption varies from 52.7 kWh up to 565.6 kWh per TV.
  • TV power consumption for LG models varies drastically depending on features like screen size, resolution, LED type and audio power.

For more background information and terminology, we recommend you read our post on how many watts does a TV use?

All of the information for this study of LG TVs was gathered from the official LG TV website. The information was analyzed and summarized in this article and it’s only to be used for information purposes and as a general reference. To get the wattage and energy consumption numbers, you will have to fine the Energy Guide for the specific LG TV you are interested in.

How Many Watts do LG TVs Use?

As stated earlier, 32 inch to 88 inch LG TVs use between 27 watts and 308 watts, on average.

The average power for all of the LG TVs studied was 119.6 watts when in On mode.

It’s important to realize that the amount of power a LG TV uses will depend not only on the screen size but the type of LED technology used.

LG has the following different types of TVs:

We created the following chart to help you see how LG TV power increases as screen size gets larger. It’s easy to see the relationship between TV wattage and TV size, however, it’s worth mentioning that larger TV screens tend to have high resolutions like 4k (2160p) and 8k (4320p), which require much more wattage.

average lg tv watts

It’s very important to remember that the numbers here are the average of the typical power consumption numbers reported by LG. They also provide the maximum power consumption numbers for most products and that can be two to three times as much as the typical power!

The chart below shows the minimum, average and maximum TV wattage for the LG TVs we reviewed.

minimum average and maximum lg tv watts

LG TV Wattage by Screen Size

LED TV screen size is the most popular way of choosing a TV, which is closely followed by resolution and other features like Wi-Fi, audio quality and Smart TV functions.

Based on the previous two chart, it’s easy to see that LG TV wattage increases with TV size, so as a consumer you can expect the larger TVs to consume more energy and cost more to operate.

The following table puts the TV screen size and TV wattage side-by-side so you can easily see how each TV size compares to the other ones.

TV Screen SizeTV Wattage (Average)LG Model
32 Inch27.0 Watts32LQ630BPUA
43 Inch58.6 Watts43UN7300PUF
50 Inch77.4 Watts50UN7300PUF
55 Inch92.3 WattsOLED55C2PUA
60 Inch89.0 Watts60UM6900PUA
65 Inch128.2 WattsOLED65CXPUA
70 Inch100.6 Watts70NANO75UQA
75 Inch146.6 Watts75QNED85UQA
77 Inch171.9 WattsOLED77C1AUB
83 Inch176.8 WattsOLED83C1PUA
86 Inch187.4 Watts86NANO90UPA
88 Inch308.0 WattsOLED88Z2PUA

LG TV Wattage by Resolution

The breakdown of LG TV resolution is shown in the pie chart below. There weren’t any full high-definition, 1080p, TVs in this review.

lg tv resolution

As you can see, 2160p resolution is the most common, which is also referred to as 4K.

High-definition, or HD, is 720p and was only found in five LG 32 inch TVs.

The newest 8K resolution was only found in larger TV screen sizes from 75 inch to 88 inch.

The following table lists the average LG TV power by screen resolution to provide an idea of how TV watts go up with resolution.

NameResolutionTV Wattage (Average)TV Percentage
High-Definition (HD) 720p27.0 Watts7%
Full High-Definition (Full HD)1080p--
4K2160p118.3 Watts88%
8K4320p258.0 Watts5%

How Much Electricity Does a LG TV Use Per Hour, Month and Year?

The amount of electricity used by any modern TV in an hour is very simple to calculate if you know how much power is uses in On mode. You simply take the wattage and divide it by 1000, which gives you the amount of energy in units of kWhs.

So, for the typical 65 inch LG TV, which uses 128 watts to operate, it would take 128 watts divided by 1000 to get 0.128 kWh of energy used in 1 hour.

In order to accurately calculate how much electricity a TV uses in a month, you need to estimate the amount of time the TV is going to be on and off.

Fortunately, the Energy Star standard has determined that 5 hours with the TV in On mode and 19 hours with the TV in Standby mode, or when it’s off, is the norm for energy guide calculations.

Hence, you determine how much energy is used in a day by multiplying the hourly power times 5 and then adding that to the standby mode power (0.5W) times 19 hours.

You simply take that daily power much and multiply it times 30 to get your monthly average or by 365 to get the estimated amount of electricity used by a TV in a year!

If you have a specific TV, or even your own TV at home, and want to know this number, then simply look-up the energy guide online, or you might even find the yellow label on the back of the TV.

average lg tv power per month and year

LG TV Power Consumption by Screen Size

The average LG TV power consumption, listed by TV screen size, is shown in the table below for hourly, monthly and yearly usage.

It’s important to remember that these numbers are just the average, and there’s a big difference between the minimum and maximum values for each TV screen size class, plus the maximum power that each TV can potentially use.

Hence, be sure to figure out how much power your specific TVs are using if you want to better understand just how much electricity your home TVs are using!

TV Screen SizeTV Energy Per HourTV Energy Per MonthTV Energy Per Year
32 Inch0.027 kWh4.3 kWh52.7 kWh
43 Inch0.059 kWh9.1 kWh110.3 kWh
50 Inch0.077 kWh11.9 kWh144.8 kWh
55 Inch0.092 kWh14.1 kWh171.8 kWh
60 Inch0.089 kWh13.6 kWh165.8 kWh
65 Inch0.128 kWh19.5 kWh237.4 kWh
70 Inch0.101 kWh15.4 kWh187.1 kWh
75 Inch0.147 kWh22.3 kWh271.0 kWh
77 Inch0.172 kWh26.1 kWh317.1 kWh
83 Inch0.177 kWh26.8 kWh326.1 kWh
86 Inch0.187 kWh28.4 kWh345.5 kWh
88 Inch0.308 kWh46.5 kWh565.6 kWh

LG TV Power Consumption by Resolution

LG TV resolution plays a significant role in power consumption when comparing the same TV screen size.

As a good estimate, the amount of electricity is almost double as the resolution increases, or doubles!

Hence, a good understanding of how resolution impacts both TV energy consumption, and TV quality, is important when comparing TVs side-by-side.

The table below clearly shows that trend, though the size of the TVs also tend to get bigger when the resolution increases.

NameResolutionTV Energy Per HourTV Energy Per MonthTV Energy Per Year
High-Definition (HD)720p 0.027 kWh4.3 kWh52.7 kWh
Full High-Definition (Full HD)1080p---
4K2160p0.118 kWh18.0 kWh219.3 kWh
8K4320p0.258 kWh39.0 kWh474.3 kWh


On average, LG 50 inch TVs use 77.4 watts with a minimum of 56 watts and a maximum of 114.5 watts.

LG 50 inch TVs use 144.8 kWh of electricity per year.

On average, LG 55 inch TVs use 92.3 watts with a minimum of 61 watts and a maximum of 120 watts.

LG 55 inch TVs use 171.8 kWh of electricity per year.

On average, LG 65 inch TVs use 128.2 watts with a minimum of 115 watts and a maximum of 155 watts.

LG 65 inch TVs use 237.4 kWh of electricity per year.

LG TVs average about 119.6 watts of power for their 32 to 88 inch screens.

On average, LG TVs consume 221.7 kWh of energy per year.


Hopefully this study of the newest LG TVs in 2021 and 2022 has helped give you an understanding of the amount of power and energy needed to power them.

There was a lot of information presented, but the information was presented in such a way to give you an idea of approximate power and energy needs, per TV, in your home.

And with that information, you can then calculate how much it costs to run a LG TV!

We’d love to hear from you if you have any comments or specific questions that we didn’t cover.

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