How to Choose an Energy-Efficient TV

The short answer

The biggest lever on a television's running cost is screen size, not the panel technology on the spec sheet. A 32-inch set in our data sips about 52 kWh a year, roughly $10 at the US average rate of $0.1856/kWh, while a wall-filling 85-inch model can pull 234 kWh or more, north of $43. Pick the size that fits the room, keep the picture out of showroom-bright mode, and the running cost mostly takes care of itself.

To put that in context: across the 172 ENERGY STAR certified TVs we track, annual running cost ranges from just $3 for a tiny Clear Tunes ATSC-PM81331 up to $117 for the enormous 114-inch Samsung QN115QN90FF. The median is $35 a year, under $3 a month. A TV is simply not an expensive appliance to run compared with a fridge or an air conditioner, so the goal here is avoiding the models that draw two or three times the norm, not chasing pennies.

Screen size is the number that actually matters

Power draw scales with panel area, and area grows fast as the diagonal climbs. Every extra inch of screen is more backlight or more self-lit pixels to feed. Here is the cheapest-to-run model at each common size in our dataset, which shows the curve clearly.

Screen size	Efficient example	kWh/year	Cost/year
24 in	Sansui LE-24T1	45	$8
32 in	Sansui LE-32KA1	52	$10
43 in	Sansui LE-43KA1	82	$15
50 in	LG 50QNED80AU	114	$21
55 in	LG 55QNED80AU	128	$24
65 in	Philips 65HFL5214U/27	159	$30
75 in	LG 75QNED80AU	175	$32
85 in	LG 86QNED80AU	234	$43

Going from a 55-inch to a 65-inch efficient set costs about $6 more a year. Jumping to 85 inches roughly doubles the 55-inch bill. None of these are budget-wrecking, but if you were undecided between two sizes, the smaller one is the quietly cheaper choice for the next decade of viewing.

OLED, LED, or mini-LED: does the panel matter?

This is where marketing and reality part ways. People assume OLED is the efficient choice because each pixel switches off completely for true black. That is true for dark movie scenes, but ENERGY STAR tests to a standardized bright signal, and there the picture flips. Compare like-for-like at 55 inches in our data:

• LED / QNED (LCD with LED backlight): the LG 55QNED80AU and the Philips 55HFL5214U each land around 128 to 133 kWh, about $24 a year.
• OLED: the LG OLED55C4PU and its siblings run 177 to 201 kWh, roughly $33 to $37 a year.

At the same size, the OLED costs 40 to 55 percent more to run. Mini-LED sits at the top of the draw table too, because its whole appeal is punchy, sustained brightness: the flagship Samsung QN90 and QN95 mini-LED sets are the hungriest models we track. In a single 65-inch class, running cost spans from $30 for a plain LED up to $51 for the mini-LED and OLED flagships like the Samsung QN65S95DAF.

None of this means OLED is a bad buy. The contrast is genuinely better and your real-world bill depends heavily on what you watch and how bright you run it. Just do not buy OLED expecting to save energy. You are paying a small premium in electricity for the picture, not banking a discount.

The settings that quietly move your bill

Certification numbers assume default settings, and the single biggest variable you control is brightness. Retail floor models ship in a vivid or dynamic mode cranked to survive fluorescent lighting, and that mode can pull noticeably more than the same set in a calibrated home or cinema preset. Three quick wins:

• Drop out of Vivid mode. Switching to a Standard, Filmmaker, or Cinema preset lowers the backlight and usually looks better in a normal living room anyway. On a large mini-LED set this is the difference that matters most.
• Leave the ambient light sensor on. Most TVs can dim automatically as your room darkens. It trims draw in the evening without you touching anything.
• Do not fear standby. Modern certified sets pull well under a watt when off, so a 65-inch TV in standby costs only a dollar or two a year. Quick-start or always-listening voice features raise that a little, so turn them off if you want the floor.

How to choose without overthinking it

Work in this order. First, size the screen to the room and your viewing distance rather than to the biggest number you can afford. Second, decide honestly whether you want OLED or mini-LED picture quality, and accept the modest running-cost premium that comes with it. Third, among the sets that fit those two answers, use the ENERGY STAR figure and our numbers to skip any outlier that draws far more than its size-mates.

You can compare every model side by side in the televisions category, plug your own rate and viewing hours into the running-cost calculator, or read the full method in our cost to run a television guide. For most households the difference between the best and worst realistic choice is $20 to $40 a year. Worth getting right, not worth losing sleep over.