Model
Lg 55QNED80AU*
Rank #37 means 36 of the 172 television models we track cost less to run each year; the 87th efficiency percentile means it uses less energy for its size than 87% of those models.
What does the Lg 55QNED80AU* cost to run per year?
At $24 a year to run, the Lg 55QNED80AU* runs cheaper than most models in its class, ranking #37 of 172 television models we track. Efficiency-wise, once capacity is accounted for, it beats 87% of the class, a solidly strong result rather than a size-driven fluke. At 54.6 in, it is a mid-size television for the class, which runs 13.23 to 114.4 in; size and efficiency are the two levers behind the figure above, and this dataset does not carry a separate efficiency-factor column for this class.
Immediately around it on the leaderboard, the Sansui LE-50VA1 at $24/yr runs a little cheaper and the Samsung QN42S90HAE at $24/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A television typically stays in service for somewhere around 7 years; over that span, the Lg 55QNED80AU*'s $24/yr adds up to roughly $168 in electricity alone, before purchase price or repairs.
By the numbers
The Lg 55QNED80AU* normalized against its whole class, so each figure means something.
What it costs you over time
Running cost is an every-year number, so it compounds. At $24/yr, here is what the Lg 55QNED80AU* adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Lg 55QNED80AU* costs about $240. That is roughly $110 less than the class median, which would run closer to $350 over the same ten years.
How the Lg 55QNED80AU* compares
The television class we track runs from $3 to $117 a year. At $24/yr, it runs about $11 a year cheaper than the class median of $35, and it is about $21 a year more than the cheapest television to run at $3.
What drives its running cost
At 54.6 in, the Lg 55QNED80AU* is a mid-size television for its class, which spans 13.23 to 114.4 in with a median of 55 in, putting it squarely in the middle of the class on the size lever that drives most of the cost.
- Screen size. A bigger panel needs more backlight or more emissive pixels to reach the same brightness, so energy use climbs with diagonal screen size across most panel technologies.
- On-mode brightness. The picture mode you leave a TV on, vivid or eco, moves its real-world wattage more than almost anything else you control directly.
- Hours of use. ENERGY STAR's on-mode wattage figure assumes a standard number of hours per day; a TV left on longer than that, or used as ambient background noise, accumulates more of that hourly cost.
Common questions
Is the Lg 55QNED80AU* cheap to run?
Yes, relatively. At $24 a year it ranks #37 of 172 television models we track, in the cheaper part of its class to run.
How much does the Lg 55QNED80AU* cost per month?
Roughly $1.98/mo, spreading the $24/yr estimate evenly across twelve months at $0.1856/kWh. Actual monthly bills swing with your rate and usage pattern.
How is this running-cost figure calculated?
We take the model's published annual energy use of 128 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $24 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Lg 55QNED80AU* for its size?
87th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 36 | Sansui LE-50VA149.61 in | $24 |
| 35 | Sansui LE-50KA149.5 in | $24 |
| 34 | Sansui LE-40VA149.61 in | $24 |
| 33 | Lg OLED48C6PU*47.5 in | $23 |
| 32 | Philips 50HFL5214U/2749.5 in | $23 |
Source
ES_1118034_55QNED80AU*_112020241332261_1430736View certified television listingsENERGY STAR data as of July 2026Lg and 55QNED80AU* are used here for identification only and are not endorsements. Figures are computed by WattWise Labs from public ENERGY STAR data, not measured in our own lab.