Smart TV vs Regular TV Energy Consumption: Real Numbers and Real Savings

The TV is on in the average American household for about 4.8 hours a day, according to Nielsen data. That's nearly 1,750 hours a year of electricity quietly ticking up your utility bill. Whether you're still running a bulky plasma from 2010 or eyeing a new 65-inch QLED smart TV, the choice of screen — and how you use it — can mean a difference of $50 to $100 per year on your energy bill. Let's look at the real numbers.

What Counts as a "Regular" TV vs. a Smart TV?

For this comparison, "regular TV" covers any television without built-in internet connectivity — including older CRT sets, rear-projection displays, and first-generation plasmas and LED-LCD panels sold before roughly 2015. "Smart TV" refers to any modern set with a built-in operating system (Roku, Android TV, webOS, Tizen, Fire TV, etc.) that can stream content over Wi-Fi without an external device.

The key energy difference between these two categories isn't actually the "smart" chip — it's the display technology and era of manufacture. TVs have gotten dramatically more efficient over the past decade, and that efficiency gain dwarfs any extra wattage that a Wi-Fi module or streaming processor adds.

The Wattage Numbers: TV Type by Technology

To make fair comparisons, all figures below are for a 55-inch screen (the most popular size in the U.S.) at default brightness settings. Active wattage comes from DOE/ENERGY STAR measured data and manufacturer energy guides; standby wattage is measured with a kill-a-watt meter at idle.

Annual cost formula: (Active watts × 5 hrs × 365 days ÷ 1000) + (Standby watts × 19 hrs × 365 ÷ 1000), multiplied by $0.17/kWh. Electricity rate based on 2025–2026 U.S. EIA average residential rate.

"ENERGY STAR certified televisions use on average 25% less energy than conventional models. If all televisions sold in the United States were ENERGY STAR certified, the energy cost savings would grow to about $1 billion each year."

Does the "Smart" Part Actually Cost Extra Electricity?

This is probably the most common question we get. The short answer: yes, but barely. The Wi-Fi radio, streaming processor, and always-on voice assistant chip in a smart TV add roughly 1–3 watts of standby draw compared to a basic LED panel with no internet hardware. Over a full year (19 hours of standby per day), that 2-watt premium costs about $2.37 extra per year. That's genuinely negligible — the dominant factor in your TV's electricity bill is the backlight, not the smart chip.

Where the smart TV's network features do matter is auto-updates and background data refresh. Some streaming platforms poll their servers every few minutes even when you're not watching. Enabling your TV's built-in auto-off or "no signal" timer ensures the set drops to true low-power standby after an hour of inactivity rather than idling at full network-connected power.

The Single Biggest Lever: Picture Mode and Backlight Brightness

Most TVs ship from the factory in a "Vivid," "Dynamic," or "Sports" picture mode designed to look impressive on a brightly lit showroom floor. This mode often cranks the backlight to 100% — which can add 20–40 watts of unnecessary power draw in a typical living room.

Switching to "Standard," "Movie/Cinema," or "Eco" mode typically cuts active power draw by 20–40%, according to measurements published by the National Resources Defense Council (NRDC). On a 300-watt plasma that's not much help, but on an 80-watt LED smart TV, dropping to 55 watts saves about $7.74 per year — at zero cost to you, just a settings change.

If your TV has a separate manual backlight slider (usually buried in Picture > Advanced Settings), setting it to 40–60% in typical room lighting is virtually indistinguishable visually but measurably cheaper. Some OLED TVs even include an "OLED Light" control that has a near-linear relationship with power draw — halving the slider roughly halves the wattage.

Standby Power: The Hidden Slow Drain

Even the most efficient modern smart TV consumes electricity in standby. Most current models fall in the 0.5–2 watt range, which ENERGY STAR mandates must be below 3 watts for certification. Older sets — especially plasmas and first-generation smart TVs — could idle at 5–15 watts, which at $0.17/kWh costs up to $14 per year just sitting "off."

The cleanest fix is a smart power strip with a control outlet: your TV plugs into the control outlet, and your soundbar, game console, and streaming stick plug into the switched outlets. When the TV drops to standby, the strip cuts power to all peripheral devices automatically. This approach can save an additional $15–30 per year on the full home theater stack.

Screen Size Matters More Than Technology

Here's a number that surprises people: upgrading from a 55-inch to a 75-inch OLED smart TV can actually increase your electricity bill more than switching display technologies would save you. A 75-inch OLED averages around 165 watts — double the draw of a 55-inch LED-LCD at 80 watts. That difference costs roughly $36 per year extra, all else equal.

The takeaway isn't "never buy big" — it's "factor screen size into the energy equation." If you're upgrading from a 55-inch plasma (300 W) to a 75-inch OLED (165 W), you're still ahead by about $28 per year. But if you're upgrading from a 55-inch LED (80 W) to a 75-inch OLED (165 W), you're paying more on both the purchase price and the utility bill.

The ENERGY STAR Label: Your Easiest Shopping Filter

When shopping for a new TV, the ENERGY STAR label is the fastest way to ensure you're buying something efficient. As of 2026, ENERGY STAR Version 9.0 for televisions requires sets to consume no more than a size-adjusted On Mode power limit and a 3-watt standby cap. Certified TVs are tested in the "Home" picture mode (not showroom Vivid mode), so the wattage on the EnergyGuide yellow label actually reflects real-world use.

You can search the full ENERGY STAR certified TV database at energystar.gov to compare specific models before you buy — filtering by screen size, technology, and annual energy use. A few minutes of research can easily identify which 65-inch models use 60 kWh/year versus 120 kWh/year, a difference of about $10 per year for the life of the TV.

Practical No-Cost and Low-Cost Actions Right Now

• Switch picture mode to Standard or Movie: Free, saves 20–40% of active power.
• Enable auto sleep / no-signal timer: Free, eliminates hours of idle power draw.
• Reduce backlight manually to 50%: Free, near-invisible visually in most rooms.
• Enable Automatic Brightness Control (ABC) if available: Free, adjusts backlight to room light conditions dynamically.
• Use a smart power strip for the full entertainment center: ~$30–45, saves $15–35/year across all connected devices.
• Plug TV into a smart plug with energy monitoring: ~$15–25, lets you see exact wattage and set schedules.
• Unplug or use a switched outlet strip for infrequently used secondary TVs: Free, eliminates standby draw entirely when the room isn't in use.

Recommended Products to Reduce TV Energy Use

Frequently Asked Questions

Do smart TVs use more electricity than regular TVs?

Not necessarily. Modern ENERGY STAR-certified smart TVs are far more efficient than older plasma or rear-projection sets. Compared to a similarly sized LED TV from five or more years ago, a current smart TV uses roughly the same or less active power, but may draw slightly more standby power due to always-on Wi-Fi and voice assistant chips.

How much does it cost to run a TV for a year?

A modern 55-inch ENERGY STAR smart TV averaging 80 watts, watched 5 hours per day at the U.S. average electricity rate of $0.17/kWh, costs roughly $24.82 per year. An older 55-inch plasma drawing 300 watts under the same conditions costs about $93 per year.

What is TV standby power and how much does it cost?

Standby power (sometimes called phantom load) is the electricity a TV draws when it appears to be off but is actually in a low-power idle state. Smart TVs typically draw 0.5–2 watts on standby. At 2 watts for 19 hours a day, that adds roughly $2.37 per year — small but cuttable with a smart power strip.

Which TV technology is most energy-efficient?

Traditional LED-LCD TVs tend to have the lowest average wattage per square inch of screen. OLED TVs are efficient at low brightness settings but can spike at high brightness. Plasma and rear-projection TVs are the least efficient and can use 3–5× more electricity than a modern LED equivalent.

Does screen brightness affect TV electricity use?

Yes, significantly. Manufacturers often ship TVs in a "Vivid" or "Dynamic" picture mode that runs the backlight at full blast. Switching to "Standard" or "Eco" mode can cut active power draw by 20–40%, saving several dollars a year at zero cost.

The Bottom Line

If you're still running a plasma or early LCD TV from the mid-2000s or early 2010s, the energy math for an upgrade is pretty compelling — not just for the environment, but for your wallet. A switch to an ENERGY STAR-certified smart LED TV pays back part of its purchase price every year through lower electricity bills. If you already own a modern smart TV, the biggest gains come not from hardware but from settings: switching to Standard picture mode, enabling