Enter your TV's wattage (or estimate from size and type) and daily viewing hours for real annual cost.
A 55-inch LED TV typically draws 60-100W, a similar OLED 80-120W (brighter scenes use more), and older plasma models can draw 200-400W — check your specific model's label for accuracy.
OLED TVs draw more power on bright scenes since each pixel generates its own light, while LED/LCD TVs use a more constant backlight regardless of content — the practical difference is usually modest for typical viewing, but older plasma technology used dramatically more power than either modern option.
TV wattage varies more by content than most appliances — a bright sports broadcast or a high-contrast HDR movie can draw noticeably more power on an OLED screen than a dim scene, since each pixel generates its own light. LED/LCD screens are more consistent since their backlight runs at a steadier level regardless of content.
Generally yes for the same panel technology, since more pixels and backlight area require more energy — but a smaller OLED can sometimes draw more than a larger LED depending on content brightness.
Smart TVs with always-listening voice features or quick-start modes can draw a few extra watts in standby — check the phantom load calculator if you have several such devices.
Yes — lowering brightness reduces backlight power on LED/LCD TVs and reduces per-pixel light output on OLED TVs, so a dimmer setting genuinely saves some energy, not just eye strain.