Does Leaving Things Plugged In Use Electricity?
Yes, most electronics use 1-5 watts when plugged in but off or in standby mode. This 'vampire power' can add $50-100+ to annual electricity bills. Items with clocks, lights, or remote functions use the most standby power.
Key Takeaways
- Standby power (phantom load or vampire power) keeps devices ready to respond to remotes, maintain clocks, or charge internal batteries.
- Smart power strips cut power to devices automatically when the main device is off.
- Some devices need continuous power (routers, security systems, refrigerators).
Explanation
Standby power (phantom load or vampire power) keeps devices ready to respond to remotes, maintain clocks, or charge internal batteries. TVs, game consoles, and cable boxes are common culprits, using 1-15 watts each in standby.
The average home has 20-40 devices drawing standby power, totaling 50-100 watts constantly. At $0.16/kWh, this costs $70-140 per year just for devices that aren't actively being used. Use the Power Cost Calculator to calculate your standby costs.
Modern phone chargers use very little power when not charging (under 0.5W). But older chargers, gaming consoles, and set-top boxes can be significant. Cable DVRs may use 30-40 watts even when 'off.'
Game consoles are among the worst standby offenders. The PlayStation 5 uses 1-3W in full standby but up to 36W in rest mode with USB charging and network access enabled. An Xbox Series X in instant-on mode draws 11-13W continuously. Switching these consoles to energy-saving standby mode reduces idle draw to 0.5-1W but adds 15-45 seconds to boot time.
Identifying the biggest vampire loads in your home requires a plug-in electricity meter (kill-a-watt meter), which costs $20-35. Plugging each device into the meter for 24 hours reveals its true standby consumption. Most people are surprised to find that their cable box, gaming console, and older printer account for 60-70% of total household standby power.
Smart power strips solve vampire power without requiring you to unplug devices manually. They detect when the primary device (such as a TV) enters standby and automatically cut power to connected peripherals (soundbar, streaming stick, game console). A typical smart power strip costs $25-40 and saves $30-50 per year on an entertainment center setup alone.
Some appliances must stay plugged in to function properly. Refrigerators, routers, security systems, and garage door openers need continuous power. DVRs lose scheduled recordings if unplugged. The goal is not to unplug everything but to identify and address the 5-10 devices with the highest standby draw that do not require constant power.
Things to Know
- Smart power strips cut power to devices automatically when the main device is off.
- Some devices need continuous power (routers, security systems, refrigerators).
- The largest standby loads are usually desktop computers, game consoles, and cable/satellite boxes.