Model
Samsung QN50QN90FAF
Rank #53 means 52 of the 172 television models we track cost less to run each year; the 63rd efficiency percentile means it uses less energy for its size than 63% of those models.
What does the Samsung QN50QN90FAF cost to run per year?
Do the math and the Samsung QN50QN90FAF's $27/yr puts it at rank #53 of 172, on the cheaper side of the class. Normalized for capacity, it beats 63% of television models we track, a better-than-average efficiency result. At 75.76 W in on-mode, its power draw is a direct input into that running-cost figure.
Immediately around it on the leaderboard, the Samsung QN48S90HAE at $27/yr runs a little cheaper and the Lg OLED42C5*** at $27/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 Samsung QN50QN90FAF's $27/yr adds up to roughly $189 in electricity alone, before purchase price or repairs.
By the numbers
The Samsung QN50QN90FAF 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 $27/yr, here is what the Samsung QN50QN90FAF adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Samsung QN50QN90FAF costs about $270. That is roughly $80 less than the class median, which would run closer to $350 over the same ten years.
How the Samsung QN50QN90FAF compares
The television class we track runs from $3 to $117 a year. At $27/yr, it runs about $8 a year cheaper than the class median of $35, and it is about $24 a year more than the cheapest television to run at $3.
What drives its running cost
At 49.5 in, the Samsung QN50QN90FAF is a small television for its class, which spans 13.23 to 114.4 in with a median of 55 in, at the small end of the class, capacity itself is doing a lot of the work to keep that figure down, separate from how efficient the unit actually is. At 75.76 W on-mode (the class spans 9.3 to 343.5 W), its power draw is what ENERGY STAR actually measured to produce this running-cost figure; brightness settings move that wattage more than screen size alone.
- 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.
- 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.
- 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 Samsung QN50QN90FAF cheap to run?
Yes, relatively. At $27 a year it ranks #53 of 172 television models we track, in the cheaper part of its class to run.
How much does the Samsung QN50QN90FAF cost per month?
Roughly $2.22/mo, spreading the $27/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 144 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $27 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Samsung QN50QN90FAF for its size?
63rd percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 52 | Samsung QN48S90HAE47.5 in | $27 |
| 51 | Samsung QN43QN90DAF42.5 in | $27 |
| 50 | Lg 55QNED85TU*54.6 in | $26 |
| 49 | Samsung QN42S90FAE41.5 in | $26 |
| 48 | Lg OLED48G5SU*47.5 in | $25 |
Source
ES_1023593_QN50QN90FAF_012020250701719_9947101View certified television listingsENERGY STAR data as of July 2026Samsung and QN50QN90FAF 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.