Modern TVs use far less power than people assume

A typical modern TV uses between 30 and 100 watts while it is on, depending on the size and brightness settings. That is roughly the same as a single incandescent light bulb, not a major appliance. A 55-inch TV running eight hours a day costs most households between $10 and $25 per year in electricity — noticeable only if you are tracking every dollar, invisible in a normal power bill.

The confusion comes from older technology. Plasma TVs from the 2000s and early 2010s genuinely did use 150 to 400 watts. CRT televisions before that were even heavier power users. But LCD and LED TVs — which have been standard for over a decade — changed the equation entirely. A modern TV is straightforward not a significant drain on your home's electricity.

What matters much more is what you do with the TV: leaving it on standby mode, running it at maximum brightness in a dark room, or stacking it with cable boxes and gaming consoles. Those habits shift the real cost.

Key Takeaways

  • A typical modern TV uses 30 to 100 watts while on, similar to a single light bulb, not a major appliance.
  • An 8-hour daily viewing habit costs most households $10 to $25 per year in electricity.
  • Older plasma and CRT televisions used significantly more power, but LCD and LED models have been standard since the early 2010s.
  • Standby mode, maximum brightness, and connected devices add more to your bill than the TV itself.

Why the wattage number matters less than you think

The wattage rating on a TV spec sheet is the maximum power it can draw — the ceiling, not the normal operating level. Most TVs run at 50 to 70 percent of that maximum because they are not displaying a completely white screen at full brightness. A TV rated at 100 watts might actually pull 60 watts during normal viewing.

Brightness is the single biggest variable. A TV set to 100 percent brightness in a dark room uses noticeably more power than the same TV at 50 percent brightness. Lowering brightness by half can cut power draw by 20 to 30 percent. This is why the same model TV can have wildly different real-world costs depending on how the owner uses it.

Screen size does matter, but not as dramatically as people expect. A 32-inch TV might use 30 watts; a 65-inch might use 80 watts. The difference is real, but it is not the difference between a light bulb and a space heater.

What actually costs money: standby mode and extras

A TV in standby mode — waiting for the remote signal — uses 0.5 to 3 watts continuously, 24 hours a day. Over a year, that adds up to $1 to $5 per TV, depending on your local electricity rate. It is not zero, but it is not the villain in most power bills either.

The real cost creep comes from what you attach to the TV. A cable box uses 15 to 40 watts constantly, whether you are watching or not. A gaming console in rest mode uses 10 to 15 watts. A soundbar adds another 5 to 20 watts during use. If you have a TV, cable box, and gaming console all running together, the cable box is often using more power than the TV itself.

Streaming devices like Roku or Apple TV use only 2 to 5 watts, so they do not change the equation. But if your setup includes a cable box, that is where your attention should go if you want to cut power use.

How to calculate your own TV's cost

Find the wattage on your TV's spec sheet or manual — it is usually listed as "power consumption" or "typical power." Multiply that number by the hours you watch per day, then by 365 days. Divide by 1,000 to convert to kilowatt-hours. Multiply by your local electricity rate (check your power bill; it is usually between $0.10 and $0.20 per kilowatt-hour).

Example: A 60-watt TV watched 6 hours a day costs (60 × 6 × 365 ÷ 1,000) × $0.15 = about $20 per year.

If the number surprises you — either higher or lower than expected — the next step is checking what else is plugged into that TV setup. A cable box or older gaming console will often dwarf the TV's own power draw. Unplugging or replacing those devices usually saves more money than any adjustment to the TV itself.

When TV power use actually becomes noticeable

In a household running multiple TVs, the math changes. Two TVs watched simultaneously for 4 hours a day each can add $30 to $50 per year. Three TVs can push toward $100 per year. For most people, this is still a rounding error on the power bill, but it is no longer invisible.

Power use also becomes noticeable if you run a TV 12+ hours a day — common in homes with always-on background viewing or in commercial settings. A TV running 16 hours daily can cost $40 to $80 per year on its own, and that is before you add cable boxes or other devices.

The households where TV power use actually matters are those with very high electricity rates (some parts of California and Hawaii pay $0.25 to $0.30 per kilowatt-hour) or those running older plasma TVs. If neither applies to you, the TV is straightforward not where your power bill is being decided.

Frequently Asked Questions

Do I save money by turning off my TV instead of leaving it on standby?

Standby mode costs about $1 to $5 per year per TV, so turning it off completely saves that amount. It is real money, but small. If you want to save more, focus on the cable box or gaming console instead — those cost 5 to 10 times more in standby mode.

Is it cheaper to leave a TV on all day or turn it off and on repeatedly?

Turning it off and on repeatedly is cheaper. Modern TVs do not use a power surge when you turn them on — that is a myth from older technology. Leaving a TV on uses power every second it is on; turning it off stops that when ready.

Do smart TVs use more electricity than regular TVs?

Smart TVs use roughly the same amount of power while displaying video. The smart features (WiFi, apps, processors) add a small amount in standby mode — maybe an extra 1 to 2 watts — but not during normal viewing. The difference is negligible compared to a cable box.

What uses more power: a TV or a refrigerator?

A refrigerator uses 150 to 800 watts depending on size and age, and it runs 24 hours a day. Even an old plasma TV uses less total electricity per year than a typical refrigerator. Refrigerators are the real power consumers in most homes.

Will lowering my TV brightness actually save money?

Yes, but the savings are modest. Dropping brightness from 100 percent to 50 percent might save $2 to $5 per year on a heavily watched TV. It is worth doing if you are already adjusting for comfort, but it is not a major power-saving strategy.