Televisions
LGOLED48G5SU*
ENERGY STAR certified · Apr 2026
- Annual energy use
- 137 kWh/yr
- Screen size
- 47.5 in
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Cost to run a television in every state
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How this is calculated
- Annual energy use is the figure ENERGY STAR lists for this model under typical test conditions. It is not measured in your home.
- Yearly cost = annual kWh × your rate. Monthly cost is the yearly cost divided by 12, a flat average. Five-year cost keeps the rate constant; prices will change.
- Statewide averages are not your utility’s tariff. Use your bill’s rate for a closer number.
- We do not estimate watts or hourly cost: the source data does not include them.
How it compares
Among 35 ENERGY STAR certified OLED models with a similar screen size (40.4 to 54.6 in), this one ranks 8th lowest in annual energy use.
- Median of these models
- 176 kWh/yr
- This model vs the median
- -22%
- Uses less than
- 77% of them
Compared with every comparable model on the ENERGY STAR list, not only the ones published on this site. Same type, similar size.
Same type and size, lower energy use
| Model | kWh/yr | Difference |
|---|---|---|
| Loewe stellar 42 | 107 | 107 kWh |
| LG OLED42C6PU* | 117 | 117 kWh |
| LG OLED48C6PU* | 125 | 125 kWh |
| Samsung QN42S90HAE | 128 | 128 kWh |
| Samsung QN42S90DAE | 132 | 132 kWh |
Yearly cost by state
Same 137 kWh/yr at each state’s average residential price (2026-07).
Comparable models
Same type, within 15% of this model’s screen size.
Specifications
- Annual energy use
- 137 kWh/yrAnnual energy consumption reported to ENERGY STAR
- Screen size
- 47.5 inDiagonal viewable screen size
- Display
- OLED
- Backlight
- OLED
- Resolution
- 4K (UHD)
- Use
- Consumer
- Automatic brightness
- Yes
- Features
- Automatic Brightness Control,Control Via Remote Control App,Control Via Smart Speaker,Motion-based Dynamic Dimming (MDD) (also known as Motion Eye Care),Quick Start,User Adjustable Backlight,Wake-On-Cast Compatibility,Wide Color Gamut
- Markets
- United States
- Available on market
- 2026-04-17
- ENERGY STAR ID
- 4593914
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Frequently asked questions
How much electricity does the LG OLED48G5SU* use?
ENERGY STAR lists 137 kWh per year under typical test conditions, as reported to ENERGY STAR, including standby. Your use will differ with how many hours a day the television is on and the picture settings you choose.
How much does it cost to run?
At statewide average residential prices, the listed annual use costs about $17.43 in Louisiana and $65.76 in Hawaii (EIA, 2026-07). Your own utility rate may be different; enter it in the calculator.
How does the LG OLED48G5SU* compare with similar models?
Among 35 ENERGY STAR certified OLED models with a similar screen size, it ranks 8th lowest in annual energy use. Its 137 kWh per year is 22% below the median of 176 kWh.
What screen size is it?
ENERGY STAR lists a 47.5-inch viewable diagonal for this television.
Learn more
Methodology and sources
Model data comes from the ENERGY STAR Certified Televisions dataset (EPA). Electricity prices are statewide average residential prices from the U.S. EIA, latest period July 2026. Values are stored locally and refreshed by scheduled imports. Missing values are left blank, never estimated.