Model
Lg OLED77C4PU*
Rank #145 means 144 of the 172 television models we track cost less to run each year; the 17th efficiency percentile means it uses less energy for its size than 17% of those models.
What does the Lg OLED77C4PU* cost to run per year?
Do the math and the Lg OLED77C4PU*'s $56/yr puts it at rank #145 of 172, one of the costlier television models we track to keep running. Normalized for capacity, it beats only 17% of television models we track, one of the weaker efficiency results we track for the class. At 164.9 W in on-mode, its power draw is a direct input into that running-cost figure.
Immediately around it on the leaderboard, the Lg OLED83C6HU* at $56/yr runs a little cheaper and the Lg 86QNED85TU* at $57/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 OLED77C4PU*'s $56/yr adds up to roughly $392 in electricity alone, before purchase price or repairs.
By the numbers
The Lg OLED77C4PU* 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 $56/yr, here is what the Lg OLED77C4PU* 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 OLED77C4PU* costs about $560. That is roughly $210 more than the class median, which would run closer to $350 over the same ten years.
How the Lg OLED77C4PU* compares
The television class we track runs from $3 to $117 a year. At $56/yr, it runs about $21 a year above the class median of $35, and it is about $53 a year more than the cheapest television to run at $3.
What drives its running cost
At 76.7 in, the Lg OLED77C4PU* is a large television for its class, which spans 13.23 to 114.4 in with a median of 55 in, among television models, bigger capacity is the most common reason a running-cost figure lands on the high side, all else being equal. Its on-mode power draw of 164.9 W (the class spans 9.3 to 343.5 W) is the direct input into the running-cost figure, and the picture-brightness setting you choose is the single biggest lever you control over it day to day.
- 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 OLED77C4PU* cheap to run?
Not especially. At $56 a year it ranks #145 of 172 television models we track, in the pricier part of its class to run, though its size and features may still justify that for your needs.
How much does the Lg OLED77C4PU* cost per month?
Roughly $4.7/mo, spreading the $56/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 304 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $56 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Lg OLED77C4PU* for its size?
17th percentile once size is factored in. That means its size-adjusted efficiency is not the main reason for the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 144 | Lg OLED83C6HU*82.5 in | $56 |
| 143 | Samsung QN77S90DAF76.7 in | $55 |
| 142 | Samsung QN77S90HAE76.6 in | $54 |
| 141 | Lg OLED77G6WU*76.7 in | $53 |
| 140 | Samsung QN77S90FAF76.8 in | $53 |
Source
ES_1118034_OLED77C4PU*_112020230528593_3556352View certified television listingsENERGY STAR data as of July 2026Lg and OLED77C4PU* 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.