TV Energy Cost Calculator
Select your screen size and panel type, enter how many hours a day you watch, and see your exact electricity cost — monthly, annually, and per decade. All calculations update live.
Why TV Type Makes a Bigger Difference Than Size
Most people assume a bigger TV always costs more to run. That's true within the same technology, but a 65-inch LED can cost less per year than a 50-inch plasma. Here's what actually drives electricity cost.
The current standard. LED backlighting is highly energy-efficient. A modern 55-inch LED draws around 80 watts — less than a single old-style incandescent light bulb. Energy Star-certified LED TVs draw 30–50% less than the already-efficient non-certified models.
OLED panels light each pixel individually and switch off for black pixels, using zero power for dark scenes. Average power draw is slightly higher than LED in bright scenes but significantly lower during dark content. For movies in a dark room, OLED is often more efficient than QLED.
QLED is an LED TV with a quantum dot filter for improved colour. Power consumption is nearly identical to standard LED — perhaps 10–15% more due to the higher peak brightness the backlighting must achieve for HDR content.
Plasma TVs (discontinued since 2014) drew 3–4 times as much power as a modern LED of the same size. A 50-inch plasma averaged 200–250 watts. If you're still running a plasma, replacing it with a modern LED will typically pay for itself in electricity savings within 2–4 years.
Cathode-ray tube TVs are a rarity in 2026 but still running in some homes. A 32-inch CRT draws approximately 100–120 watts — more than a 65-inch LED. Replacing a CRT with any modern flat-panel TV reduces energy use by 60–80%.
How to Read Your Electricity Rate and Bill
The calculator defaults to $0.16/kWh — the 2026 US residential average. Your actual rate may be higher or lower. Here's how to find it.
The Energy Star Label — What It Actually Means for TVs
Energy Star-certified TVs must consume at least 30% less power than the federal minimum efficiency standard. As of 2026, virtually every major TV manufacturer — Samsung, LG, Sony, TCL, Hisense — produces Energy Star-certified models. The label is easy to check on Amazon by filtering "Energy Star Certified" under features.
The rated wattage on a TV spec sheet is measured at full brightness with a specific test pattern. Real-world power consumption when watching TV is typically 40–70% of the maximum rated wattage — meaning the calculator gives a conservative (slightly high) estimate for normal viewing conditions.
Frequently Asked Questions
The wattage estimates are based on typical real-world measurements for each TV type and size. Actual consumption varies 20–40% depending on your TV's specific model, picture mode setting, room brightness, and content type. Bright sports and news content typically draws more power than darker movie content. The calculator is accurate enough for budgeting purposes but your exact bill impact will differ slightly. For precise measurement, a plug-in watt meter (like the Kill A Watt) costs $20–$30 and reads your TV's exact live draw.
Yes — substantially. Most TVs ship with brightness (backlight) set to maximum, which is the highest-cost setting. Reducing backlight from 100% to 50% cuts power draw by roughly 35–45% on LED TVs. The Cinema or Movie picture mode typically sets backlight to 40–60% and is both the most energy-efficient and the most accurate-looking picture for typical home viewing. Running at maximum brightness in a normal room is both wasteful and harder on your eyes.
Always turn it fully off (or at minimum to standby) when not watching — never leave it on as background noise or light. A TV left on 24 hours a day at 80 watts costs about $112 per year just for the unused hours. Standby power (0.5–2W) is negligible by comparison. Smart TVs with HDMI-CEC can auto-power down when connected devices go to standby, which helps reduce accidental leave-on energy use.
A typical 50-inch plasma draws about 200 watts. A modern 50-inch LED draws about 65 watts. At $0.16/kWh watching 5 hours a day: the plasma costs about $58/year, the LED costs about $19/year — saving $39/year. At 8 hours/day the saving is $62/year. A mid-range 50-inch LED TV costs $300–$400, meaning the electricity savings alone pay it back in roughly 6–10 years, plus improved picture quality and smart TV features.
Not meaningfully. The resolution (pixel count) has almost no impact on power consumption — what matters is the panel technology and backlight brightness. A 4K LED and a 1080p LED of the same size and brightness draw essentially identical power. The only exception is high-end 4K TVs that support very high peak brightness (2000+ nits) for HDR — these can draw significantly more power at peak, but only for brief HDR highlights, not during normal viewing.
