Model
Lg OLED42C4PU*
Rank #47 means 46 of the 172 television models we track cost less to run each year; the 51st efficiency percentile means it uses less energy for its size than 51% of those models.
What does the Lg OLED42C4PU* cost to run per year?
At $25 a year to run, the Lg OLED42C4PU* runs cheaper than most models in its class, ranking #47 of 172 television models we track. Its 51th size-adjusted efficiency percentile is unremarkable, close to what a typical model in the class scores. At 72.7 W in on-mode, its power draw is a direct input into that running-cost figure.
Immediately around it on the leaderboard, the Lg 50QNED85TU* at $25/yr runs a little cheaper and the Lg OLED48G5SU* at $25/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 OLED42C4PU*'s $25/yr adds up to roughly $175 in electricity alone, before purchase price or repairs.
By the numbers
The Lg OLED42C4PU* 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 $25/yr, here is what the Lg OLED42C4PU* 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 OLED42C4PU* costs about $250. That is roughly $100 less than the class median, which would run closer to $350 over the same ten years.
How the Lg OLED42C4PU* compares
The television class we track runs from $3 to $117 a year. At $25/yr, it runs about $10 a year cheaper than the class median of $35, and it is about $22 a year more than the cheapest television to run at $3.
What drives its running cost
At 41.6 in, the Lg OLED42C4PU* is a small television for its class, which spans 13.23 to 114.4 in with a median of 55 in, less capacity to service is usually the first reason a running-cost figure lands on the low side, before efficiency even enters the picture. 72.7 W is the on-mode draw behind this figure (the class spans 9.3 to 343.5 W); two otherwise similar TVs can differ here mostly on picture-mode defaults rather than panel technology.
- 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 Lg OLED42C4PU* cheap to run?
Yes, relatively. At $25 a year it ranks #47 of 172 television models we track, in the cheaper part of its class to run.
How much does the Lg OLED42C4PU* cost per month?
Roughly $2.1/mo, spreading the $25/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 136 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $25 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Lg OLED42C4PU* for its size?
51st percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 46 | Lg 50QNED85TU*49.5 in | $25 |
| 45 | Sansui LE-55V455 in | $25 |
| 44 | Sansui LE-50V149.5 in | $25 |
| 43 | Lg 55QNED82AU*54.6 in | $25 |
| 42 | Philips 50HFL6214U/2749.5 in | $24 |
Source
ES_1118034_OLED42C4PU*_120420231414970_6783407View certified television listingsENERGY STAR data as of July 2026Lg and OLED42C4PU* 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.