Most monitors still use a small amount of electricity after the screen goes dark because some internal circuits stay energized until wall power is fully cut.
You press the power button, the panel goes black, and the smart plug still shows a draw. That is a common frustration with gaming monitors, ultrawide displays, and even office panels that look “off” but are still waiting for a signal, keeping accessory power alive, or holding part of the display pipeline awake. The good news is that the fix is usually simple: identify which low-power state your monitor is really entering, then decide whether settings, refresh-rate changes, or a switched outlet make the most sense for your setup.
What “Off” Usually Means on a Monitor
Standby is not the same as zero power
Standby power is electricity a device uses while it is not doing its main job but still has energized circuits. On a monitor, that can include the power supply, the signal-detection circuit, the controller that watches for a wake command, status LEDs, and accessory charging or hub functions.
That is why a monitor can look fully off yet still draw power. In published examples, modern displays often land below 0.5 W in sleep or standby, but real-world figures can vary from about 0.5 W to 10 W, depending on design, size, and features, with some outlier cases much higher when the display never reaches its lowest-power state. One useful rule of thumb from the standby-power literature is that every continuous 1 W adds roughly 9 kWh per year, so even “small” off-state loads add up across multiple screens.
Monitors often have multiple low-power states
A practical way to think about monitor power behavior is to separate four states: on, sleep, standby/active-off, and hard off. A monitor power-use example for a monitor model lists 72 W max, 38 W typical, and less than 0.5 W in sleep or standby, which is normal for a modern display.
The catch is that many monitors do not move cleanly from “screen black” to “minimum standby.” Some keep more electronics active for faster wake, input detection, accessory power delivery, or firmware logic. That is why the number on your watt meter matters more than the label on the front button.
Why Some Gaming and Premium Displays Draw More Power When “Off”
Extra features keep extra circuits alive
A company’s standby explanation notes that monitors with powered extras such as hubs or charging support may keep more circuitry active in low-power states. That matters more in premium categories like gaming monitors, ultrawide monitors, and portable monitors, where feature density is higher than on a basic office screen.
In buying terms, every convenience feature has an energy tradeoff. Downstream charging, fast wake behavior, input switching, ambient lighting, and always-available input detection can all make the “off” state less final. Portable monitors with external power bricks can also continue drawing from the adapter side even after the panel itself appears off.
Real examples show how large the gap can be
A monitor standby case showed a user measuring about 23 W after the operating system put the monitor to sleep, then seeing the draw fall to around 2 W or under 1 W only after toggling the monitor off and back on. Another owner of a newer revision still reported roughly 4.9 W to 5 W in operating-system-initiated standby and 0 W after full operating system shutdown.
A similar pattern appeared in a monitor report, where the monitor reportedly stayed around 16 W to 17 W for hours with power-saving mode off, then dropped below 1 W after about 9 minutes when power-saving mode was on. That is the key lesson for buyers: high standby draw is not just about brand or screen size. It is often tied to firmware behavior, power settings, and whether the monitor is truly entering its deepest idle state.
High Refresh Rate and Multi-Monitor Setups Add a Separate Power Problem
The monitor may not be the only thing drawing power
High refresh rates can improve motion clarity and responsiveness, but they can also increase power use. That does not always show up as monitor standby draw. In many gaming setups, the bigger hidden cost is that the graphics processor stays in a higher power state when driving very high refresh rates, especially with two displays attached.
A forum example documented system idle power rising from about 70 W to 75 W up to roughly 120 W to 130 W when a display was switched from 120 Hz to 144 Hz in a dual-monitor setup using a graphics card from a brand. The stated reason was that the graphics processor would not clock down properly at 144 Hz in that configuration. That is not “monitor standby” in the strict sense, but it is a major reason a gaming desk can keep burning power even when nothing is happening on screen.
Wake-ups and driver behavior can stop deep sleep
Monitors also waste power when they repeatedly wake for a few seconds and then go back to sleep. A hardware forum case traced those wake events toward the display-driver path, and testing with integrated graphics made the problem disappear. That points to the graphics processor, driver, or signal chain rather than the monitor alone.
Another practical clue came from a forum discussion, where monitor standby did not reduce total computer draw because the discrete graphics processor still had to maintain the display path. For gamers using a 240 Hz panel plus a secondary screen, the takeaway is simple: lowering desktop refresh, using adaptive refresh rate where supported, and checking for wake loops can save more energy than focusing on the monitor’s front power button alone.
How to Measure What Your Monitor Is Really Doing
Start with specs, then confirm with a watt meter
The quickest way to avoid guesswork is to check the monitor’s published “sleep,” “standby,” “active-off,” or “switch-off” figures, then compare them with a plug-in watt meter. A measurement-oriented summary specifically recommends a plug-in watt meter, and a company’s community notes reference a standard test method as the standard method when readings are stable.
Use a simple test routine. Measure the monitor while actively in use, after the operating system turns the screen off, after pressing the monitor’s own power button, and after cutting outlet power. If you use an ultrawide gaming monitor with accessories attached, test once with the accessory cable connected and once without it. That quickly shows whether the extra draw is coming from the panel, the hub, or a soft-off mode that never fully settles.
Know what counts as normal and what counts as suspicious
For a modern monitor, under 0.5 W in standby or active-off is common, and around 1 W is still not unusual. At that level, the annual energy cost is minor for one display. But once you see 3 W, 5 W, or especially 10 W+ for long periods, you should treat it as a settings, firmware, or design issue worth addressing.
The easiest sanity check is yearly impact. A steady 0.45 W standby load saves only about 3.1 kWh per year if you eliminate it, which is roughly $0.40 annually at $0.13/kWh. A steady 5 W load is around 45 kWh per year. A steady 17 W load is about 153 kWh per year. That difference is why a premium gaming monitor that never reaches deep standby deserves more attention than a basic office panel sitting at 0.3 W.
The Safest Ways to Reduce or Eliminate Standby Draw
Use settings first, then cut power if needed
Operating system power settings let you shorten screen-off timers, switch to Best power efficiency, and use adaptive refresh rate on supported hardware. For high-refresh-rate monitors, lowering the desktop refresh rate when you are not gaming can reduce both display and graphics-processor-related power use, especially on laptops and mixed-refresh setups.
Monitor-side settings matter just as much. If your display has a power-saving mode, deep sleep option, accessory charging toggle, or fast wake setting, test those first. The monitor example above showed that one menu option changed overnight off-state power from roughly 16–17 W to under 1 W after a short delay. That is a far bigger win than shaving a few watts off active brightness.
Fully disconnecting power is the only guaranteed zero
Cutting mains power completely is the only reliable way to eliminate standby draw. In practice, that means unplugging the monitor or using a switched or smart power strip. For desks with a gaming monitor, speakers, console dock, and charger brick, one strip often removes several phantom loads at once.
Using a power strip this way is generally considered low risk for a monitor, and a Q&A platform discussion notes that the bigger electrical stress is usually during power-on because of inrush current. The real tradeoff is convenience: some monitors may lose minor settings, take longer to wake, or behave differently with accessories after full power removal.
What to Look For When Buying a Monitor
Spec-sheet items that matter more than buyers expect
If low idle and off-state power matter to you, look beyond brightness and refresh rate. Check for published Standby, Sleep, Active-off, or Switch-off power numbers. Look for user controls over power-saving mode, accessory charging, deep sleep, and input-switching or hub behavior. Those details matter most on gaming monitors, ultrawide monitors, and portable monitors with extra connectivity.
Also think about your actual use pattern. If the monitor will spend 12 to 16 hours a day idle in a home office, a stable sub-0.5 W standby figure is more valuable than a feature that speeds wake by one second. If it is a weekend gaming display that is normally shut down at a switched strip, standby numbers matter less than active efficiency and whether the graphics processor clocks down properly at your chosen refresh rate.
Quick comparison of common monitor power states
State |
Typical power range |
What stays active |
Best use case |
Best way to reduce draw |
On |
Varies widely, often 20–70+ W |
Panel, backlight, scaler, ports |
Active gaming or work |
Lower brightness, use power-saving mode |
Sleep/Standby |
Often <0.5 W to 1 W |
Wake circuit, controller, some input detection |
Fast resume |
Enable Eco or deep sleep features |
Soft Off |
Can be <1 W, but sometimes 3–17 W in problem cases |
More internal logic, accessory power, partial display path |
Convenience with “off” button use |
Disable always-on features and test on-screen settings |
Hard Off |
0 W at the monitor |
Nothing in the monitor |
Maximum energy savings |
Unplug or switch off the outlet/power strip |
Practical Next Steps
If your monitor is using more power than expected when “off,” treat it like a short troubleshooting job rather than a mystery. Measure the actual draw, force the monitor through each power state, and decide whether you want faster wake behavior or true zero-power shutdown.
Action checklist
- Measure the monitor alone with a plug-in watt meter.
- Compare four states: on, operating-system screen-off, monitor power-button off, and outlet power off.
- Turn on power-saving mode, deep sleep, or equivalent on-screen options and retest after 10 minutes.
- Disable accessory charging or hub power if you do not need it while the monitor is idle.
- Lower desktop refresh rate or use adaptive refresh rate on high-refresh-rate displays.
- Check for repeated wake events from the graphics processor, driver, or display connection chain.
- Use a switched or smart power strip if you want guaranteed 0 W when the desk is not in use.
FAQ
Q: Why does my gaming monitor still draw power when the power light is off?
A: The light only tells you the panel is not actively displaying an image. Internal circuits may still be powered for wake detection, accessory charging, scaler control, or firmware functions, so the monitor may be in soft off rather than true zero-power shutdown.
Q: Do high-refresh-rate and ultrawide monitors always use more standby power?
A: Not always, but they are more likely to have extra electronics and settings that keep power draw higher when idle. They also create a separate risk that the graphics processor stays in a higher power state, especially in multi-monitor setups.
Q: Is it safe to use a power strip to shut my monitor off completely every day?
A: In normal use, yes. The main downside is convenience, not immediate damage. A full power cut can mean slower wake behavior, occasional setting loss on some models, or different hub behavior after restart.
