Model
Lg OLED77G5***
Rank #161 means 160 of the 172 television models we track cost less to run each year; the 4th efficiency percentile means it uses less energy for its size than 4% of those models.
What does the Lg OLED77G5*** cost to run per year?
Not many television models we track cost more to run than the Lg OLED77G5***: about $65 a year, rank #161 of 172. Normalized for capacity, it beats only 4% of television models we track, the weakest tier this efficiency ranking produces. At 76.7 in, it is a large 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-85TE1 at $64/yr runs a little cheaper and the Samsung QN98QN90FAF at $66/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 OLED77G5***'s $65/yr adds up to roughly $455 in electricity alone, before purchase price or repairs.
By the numbers
The Lg OLED77G5*** 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 $65/yr, here is what the Lg OLED77G5*** 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 OLED77G5*** costs about $650. That is roughly $300 more than the class median, which would run closer to $350 over the same ten years.
How the Lg OLED77G5*** compares
The television class we track runs from $3 to $117 a year. At $65/yr, it runs about $30 a year above the class median of $35, and it is about $62 a year more than the cheapest television to run at $3.
What drives its running cost
At 76.7 in, the Lg OLED77G5*** 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.
- 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 OLED77G5*** cheap to run?
Not especially. At $65 a year it ranks #161 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 OLED77G5*** cost per month?
Roughly $5.38/mo, spreading the $65/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 348 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $65 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Lg OLED77G5*** for its size?
4th 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 |
|---|---|---|
| 160 | Sansui. LE-85TE184.6 in | $64 |
| 159 | Samsung QN85QN90FAF84.5 in | $64 |
| 158 | Lg OLED77C5***76.7 in | $64 |
| 157 | Lg OLED77B5***76.7 in | $64 |
| 156 | Lg 86QNED90TU*85.6 in | $63 |
Source
ES_1118034_OLED77G5***_112120242314728_2599749View certified television listingsENERGY STAR data as of July 2026Lg and OLED77G5*** 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.