Standby power is the electricity devices use while they are switched off or idle but still plugged in. In a typical household, standby power often makes up about 5 to 10 percent of yearly electricity use. That can add up to around $100 or more each year. Most of this cost can be reduced with low-cost tools and a few simple habits.

Standby power is easy to miss because it is spread across many devices. No single television or charger uses much on its own, so the cost never shows up as a separate line on a bill. Instead, it raises the baseline amount of electricity a home uses every hour of the day. This guide explains what standby power is, what it costs, which devices use the most, how to find it and how to cut it.

Standby Power Is Electricity Used by Devices That Are Off

Standby power is the electricity a device draws while it is plugged in but not doing its main job. A television that is turned off still uses power so it can respond to a remote control. A microwave uses power to keep its clock running. A phone charger left in the outlet can draw a small amount even with no phone attached.

Devices use standby power for several practical reasons. Some keep a display, clock or indicator light on. Others stay connected to a network so they can receive updates or voice commands. Many modern devices also have "instant-on" or "quick start" modes that keep internal parts ready so the device starts faster.

The key point is that "off" and "unplugged" are not the same thing. When you switch a device off with a button or remote, it often keeps drawing a small current. When it is unplugged, or connected to a power strip that is switched off, the draw stops completely. Standby power is also called idle load, phantom load or always-on power.

Standby Power Adds a Steady Cost to Every Electric Bill

Standby power adds a small but constant charge to every electric bill. Common estimates put it at roughly 5 to 10 percent of home electricity use. Some studies that counted every always-on device measured idle loads closer to one-fifth or more of total household use. The exact share depends on how many devices a home has and how they are set up.

You can work out the cost of standby power with simple math. First, multiply a device's standby watts by 8,760, the number of hours in a year, and divide by 1,000 to get kilowatt-hours. Then multiply that number by your electricity rate. For example, a device that draws 5 watts all year uses about 44 kilowatt-hours, which costs about $6.60 at a rate of 15 cents per kilowatt-hour.

The cost grows because most homes have many devices drawing power at the same time. Twenty devices at 5 watts each would cost about $130 per year at the same rate. Since standby power runs 24 hours a day, even a small draw adds up over 12 billing cycles. Electricity providers such as Think Energy list the price per kilowatt-hour in their plan details, and using that price makes these estimates more accurate.

Home Electronics Draw the Most Standby Power

Entertainment systems and home office equipment are usually the largest sources of standby power. These devices often stay connected to networks and are rarely unplugged. Cable and satellite boxes, game consoles with rest modes, desktop computers, monitors and printers are common examples. Soundbars, home theater receivers, smart speakers and streaming devices also draw power around the clock.

Kitchen and household appliances also add to standby power. Microwaves, coffee makers with clocks, chargers and rechargeable tools draw small amounts all day and night. Each item seems minor, but together they raise a home's baseline usage. Customer feedback, such as Think Energy Reviews, can help households see how everyday usage habits relate to their monthly bills.

Some devices should stay plugged in even though they use standby power. Refrigerators, freezers, medical equipment, security systems and hardwired smoke alarms need constant power. A home internet router may also need to stay on if other devices depend on it. The goal is to cut unnecessary standby power, not to disconnect devices that serve a safety or daily need.

A Usage Monitor and Bill History Reveal Standby Power

The easiest way to find standby power is to measure it directly with a plug-in electricity usage monitor. The monitor plugs into an outlet, and the appliance plugs into the monitor. It shows how many watts the appliance uses while on, off and idle. These monitors are inexpensive and widely sold at hardware and electronics stores.

Your electricity bill and online usage history can also show standby power for the whole home. Usage during late-night hours, when few devices are active, is close to your home's baseline, or always-on, load. A high overnight number suggests that standby power is a meaningful part of your bill. Reading Think Energy Reviews can also show how other customers describe their usage tracking and billing tools.

Testing devices one at a time helps separate normal standby draw from waste. Most efficient modern electronics use less than 1 watt in standby mode. A device that draws 5 to 15 watts while off is worth dealing with first. Write down the readings so you can rank devices from highest to lowest draw.

Smart Power Strips and Settings Cut Standby Power

The most effective way to cut standby power is to stop electricity from reaching devices that are not in use. Advanced power strips do this automatically. Many models sense when a main device, such as a television, turns off, and then cut power to connected items like speakers and game consoles. Timer strips can also turn off groups of devices during set hours.

Changing device settings is another simple step. Turn off "instant-on," "quick start" or "always listening" features when you do not need them. Set computers and monitors to sleep after a short period of inactivity. Unplug chargers, spare appliances and devices in guest rooms that are rarely used.

Reducing standby power works best as a set of steady habits. Start with the highest-draw devices you found during testing, and choose efficient models when you replace electronics. Pairing lower usage with a suitable plan from a provider like Think Energy helps turn these small changes into lasting savings.

Cutting Standby Power Lowers Your Bill All Year

Standby power is the electricity devices use while they are off or idle, and it adds a steady cost to every electric bill. In many households, it makes up about 5 to 10 percent of yearly electricity use. Because this cost is spread across many devices, it often goes unnoticed for years. Measuring and managing it puts that money back under your control.

The main takeaway is to find the biggest sources of standby power and then cut the ones you do not need. A usage monitor, a look at overnight usage and a few smart power strips cover most of the work. Small changes to settings and daily habits keep the savings going. Over a full year, these steps can lower your electric bill without changing how you use your home.