How much electricity does a TV use? And how much does it cost to run?

How much electricity does a TV use? And how much does it cost to run?

Whether it’s binging your favourite show or catching up on soaps, our TVs are on frequently. But how much electricity does a TV use?

Most of us watch a lot of TV. In 2020, media regulator Ofcom found the average watching time for TV and online videos was 5 hours, 40 minutes, meaning that over a week, a TV could be on for almost 40 hours.

We’ve worked out how much you can expect to spend per hour or evening to watch your TV – as well as how to save energy at home.

How much electricity does a TV use?

The first aspect to consider when working out how much electricity your TV uses is size.

‘Televisions can be the most power-hungry of all entertainment equipment, particularly the largest ones,’ says Brian Horne, Senior Insights & Analytics Consultant, Energy Saving Trust. ‘The larger a television screen, the more energy it will consume, regardless of its energy rating. Even the most efficient 60” TV is still more expensive to run per year against the lowest rated 32″ television. By choosing a smaller television, you are generally saving more energy.’

The other element that affects energy usage is the type of TV.

  • LED TVs are the most common flatscreen type. They use an LCD display with LEDs providing the backlighting.
  • There are also QLED TVs with smaller LEDs. OLED TVs are similar to LED screens in that they also use an LCD display but don’t require backlighting.
  • You may still own a plasma TV or an LCD TV (as opposed to LED lit). Both of these use more power than the LEDs above.

Image credit: Future Publishing Plc/ Richard Powers

How much does a TV cost to run?

TVs are rated for energy efficiency on a scale of A-G, but since the scale was revised in March 2021, most will have an E-G rating. For an idea of energy usage, look at the kWh/1000h number on the label to work out how much it’ll cost to run over an average year (1,000 hours is around 2-3 hours per day or about 19 hours a week).

According to the Energy Saving Trust the national average price (as of November 2021) per pence/kWh of electricity is 20.06p. We have rounded it to 20p for illustration purposes.

  • An example 55” LED TV (rated G) uses 103kWh over 1,000 hours of viewing. This means that it’ll cost £20.60 when in use.
  • A similar 55” QLED TV (rated F) uses 77kWh over 1,000 hours of viewing, costing £15.40 to run.
  • Size up and the impact is noticeable. A G-rated 75” LED TV uses 171kWh over 1,000 hours of viewing, meaning that the cost is £34.30. An E-rated QLED 75” uses just 107kWh in comparison, costing just £21.40.

Leaving the TV on standby will increase the annual running cost. ‘TVs and game consoles, which are usually left on standby, account for a worrying 19% of total electrical use in the average household, or 9% of the nation’s energy bill,’ says Matt Manning, Group Carbon and Environment Manager at Currys. ‘Switching off electronics that are on standby can save an average household up to £40 a year.’

Grey media unit with Tv Ruark hifi and baskets

Image credit: Future PLC/ Dominic Blackmore

What energy saving features should I look for when buying a TV?

Reduce the cost of your evening’s entertainment by looking out for these handy features that the best TVs will all carry.

1. Automatic brightness control

An overly bright TV costs more to run, so look for those that have light sensors to detect the room’s brightness and adjust the screen accordingly.

2. Sleep timer

Whether you’ve nodded off or forgotten to switch off the TV before leaving the room, a sleep timer will turn the TV off after a few hours of no interaction.

3. Power/energy saving mode

Rather than keep toggling the brightness settings on your TV, this mode will dim the backlight to help reduce your power consumption by up to a third. Great for the daytime, which can then be switched back at night if needed.

how to clean a TV screen

Image credit: Future PLC/Lizzie Orme

How can I cut the cost of running a TV?

1. Don’t leave it on standby

‘A typical LCD screen uses around £50 of power every year and many modern TVs don’t even have an off button and instead are left on standby,’ explains’s energy expert Ben Gallizzi.  ‘The only way to be sure you’re not using power when the TV is not in use is to switch it off at the wall.’

2. Turn down the brightness

If choosing a smaller TV screen isn’t an option, one way to save is to turn down the brightness. Factory settings are typically brighter than is necessary for most homes. Take it down to the lowest you’re happy with to reduce power consumption.

3. Have the TV on less

While we’re not suggesting you limit yourself to one show a night, there are many of us who flick the TV on out of habit without really watching it. If it’s background noise you like, try putting on the radio, music or a podcast instead of reaching for the remote.

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