The following table reveals how many watts does a TV uses depending on different sizes and types. Screen size (Inches) LED (Power consumption-watts) OLED (Power consumption-watts) LCD (Power consumption-watts) CRT (Power consumption-watts) Plasma 15 inch TV 15 NA 18 65 NA 17 inch TV 18 NA 20 75 NA 19 inch TV 20 NA 22 80 NA 20 inch TV 24 NA 26 90 NA 21 inch TV 26 NA 30 100 NA 22 inch TV 30 NA 40 110 NA 24 inch TV 35 NA 50 120 NA 30 inch TV 38 NA 60 NA 150 32 inch TV 41 NA 70 NA 160 37 inch TV 44 66 80 NA 180 40 inch TV 50 72 100 NA 200 42 inch TV 57 75 120 NA 220 50 inch TV 72 89 150 NA 300 55 inch TV 80 98 180 NA 370 60 inch TV 88 107 200 NA What Are The Factors Affecting TV Wattage? If you are wondering about how many watts does a TV uses per hour, you'll need to understand the factors that affect the number. Type of TV: Modern TVs and LED TVs are generally more energy-efficient than older models. Generally, Energy Star-certified TVs are 25% more efficient than conventional TVs. TV Types Power Usage (W) Pros Cons LED (Light Emitting Diode) 30-100W Per Hour ● They are highly energy-efficient. ● LED TVs have less contrast and saturation. OLED TVs 50-200W Per Hour "● They are super-thin and have deeper colors. ● OLED TVs have sharper contrast. ● They are nearly as efficient as LED TVs." ● OLED TVs are very expensive. Plasma TVs 100-300W Per Hour "● They are a superior color compared to LCD TVs. ● This type of TV has a faster response time." "● They are only available in larger screen sizes. ● Plasma TVs use high energy." TV Age: Like any other technology, the older an appliance gets, the more wattage it will consume. The CRT models use up to 120 watts, whereas the LED TV consumes 24-28 watts for small sizes and 90 watts for larger sets. Size of TV: The larger TVs typically consume more energy than smaller ones. For example, a 48-inch TV consumes 80 watts of power. But how many watts does a 65-inch TV use? It is nearly 115 watts. TV Model Type 24-inch 50-inch CRT 75-120 watts N/A Plasma N/A 150-500 watts LCD 36-44 watts 75-90 watts LED 24-28 watts 50-60 watts OLED N/A 90-107 watts TV Usage: The more TV you use, the higher the watts consumption will be. It is best to switch off the TV when not in use to avoid higher bills. Vampire Power: It's a term for how much power any device consumes when turned off but plugged in. TVs typically consume 5% of their usual power consumption, even in standby mode. How to Determine The TV Power Consumption? Most modern TVs, like LED or OLED, are more energy-efficient and have an ENERGY STAR-rated sign. It generally consumes around 150 watts. You can find the watt consumption of your TV on the blank panel of the appliance. If, in case, you cannot find the wattage on the TV, multiply the maximum voltage and amperage of the appliance. Formula: Watts of TV × Hours Used = Power Consumption Example: A 150-wattage TV appliance, when used for three per day, will consume 150W × 3H = 450Wh per day.