Otis Singleton
Leaving appliances plugged in when they are not in use can waste electricity. This is known as phantom, idle, or standby electricity loss. Vampire electronics are responsible for as much as 20% of home energy consumption and 5-8% of a single-family home's annual usage. The average home has dozens of items plugged in at any given time, and 75% of the electricity these devices consume is used when they are not even on. This wasted energy can add up to 10% of a home's energy costs, or around $165 per household annually in the US.
Does leaving things plugged in waste electricity?
| Characteristics | Values |
|---|---|
| Devices that waste electricity when plugged in | TV, gaming console, chargers, stereo equipment, cable box, kitchen appliances, alarm clocks, electric toothbrushes, modems, routers, laptops, phones, and more |
| Amount of electricity wasted | 75% of the electricity consumed by devices is used when they are not in use; this can add up to 10% of a home's energy costs or around $165 per household annually |
| Ways to reduce electricity wastage | Unplugging devices when not in use, using power strips to turn off multiple devices at once, purchasing an adapter with auto shut-off, utilizing power-saving settings on devices |
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What You'll Learn
- Standby power, also known as phantom power, is electricity wasted when devices are plugged in but not actively used
- Transformers (black boxes on power cords) waste up to 75% of electricity due to poor design
- Devices with remote controls are always on, waiting for a signal to be activated
- Vampire electronics are responsible for 5-20% of home energy consumption
- Unplugging devices saves money and extends their lifespan
Standby power, also known as phantom power, is electricity wasted when devices are plugged in but not actively used
Standby power, also known as phantom power, refers to the electricity consumed by devices that are plugged in but not actively in use. This is a common occurrence in households, with many devices, such as laptops, gaming consoles, TVs, kitchen appliances, alarm clocks, and electric toothbrushes, contributing to this form of energy wastage.
Phantom power can account for a significant portion of a home's energy costs. Research suggests that in the United States, the cost of electricity wasted by devices left on standby amounts to approximately $19 billion annually, which is concerning given the environmental cost of energy generation. On an individual household level, the Natural Resources Defense Council estimates that these idle devices cost around $165 per year.
The issue of standby power is not just about the financial implications but also the environmental impact and the inefficient use of resources. It is worth noting that some devices, like refrigerators, are designed to run continuously to maintain their functionality. However, many other devices unnecessarily consume power when left on standby.
Reducing phantom power can be achieved through simple habits such as unplugging devices when they are fully charged and utilizing power strips that can be easily switched off, cutting power to multiple devices at once. Additionally, purchasing adapters with auto-shutoff features can help save money and prolong the lifespan of devices by preventing overheating and minimizing charging cycles.
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Transformers (black boxes on power cords) waste up to 75% of electricity due to poor design
Transformers, or "black boxes" on power cords, are simple devices invented in the 1880s to adjust the thousands of volts generated by power utilities to usable levels. They consist of two wire coils encased closely together, with the first or "primary" coil fed with alternating current, which induces another alternating current in the nearby "secondary" coil. The voltage of these two currents will be in exact proportion to the size of the coils.
However, transformers have been found to waste up to 75% of electricity due to poor design. This wasted electricity is known as "phantom", "idle", or "standby" electricity, as it refers to the energy that is consumed by devices that are plugged in and using power but are not actively being used. The Natural Resources Defense Council (NRDC) estimates that this costs the average US household around $165 every year, which amounts to $19 billion worth of electricity wasted across the country. This amount of wasted energy is equivalent to the amount produced by 50 large (500-megawatt) power plants annually.
Cheaply-made transformers, such as transformer-based plug-in "wall wart" power supplies, can waste a significant percentage of rated output power (10% or more) even when there is no load. This is due to the magnetizing current, which is the transformer primary current when there is no load on any of the secondaries. While this current is usually less than a few percent of the transformer's full-load power rating in well-designed transformers, it can be much higher in small, low-quality transformers.
To reduce phantom power, individuals can utilize power strips that can be turned on and off for devices and chargers, or invest in smart sockets that detect when a device is in use and turn on or off accordingly. Additionally, individuals can look for power-saving settings on devices, such as game consoles or entertainment equipment, and limit automatic updates to reduce power consumption when devices are not in use.
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Devices with remote controls are always on, waiting for a signal to be activated
Devices with remote controls, such as TVs, DVD players, and gaming consoles, are always on standby, waiting for a signal from the remote to be activated. This means they are consuming small amounts of electricity continuously, even when not in use.
While the power draw from a single device is fairly negligible, it can add up to a significant amount when combined with other devices in the home. This is known as phantom power, vampire power, or standby power, and it can contribute up to 10% of a home's energy costs.
To reduce this waste, some sources suggest unplugging devices or using power strips that can be turned on and off. However, it's important to note that the convenience of remote-controlled devices may outweigh the potential energy savings, especially with modern devices that have improved power efficiency when on standby.
Additionally, some devices with remote controls, such as washing machines, may not consume any power when turned off, even if they are plugged in, as they require a closed circuit to function.
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Vampire electronics are responsible for 5-20% of home energy consumption
Vampire electronics, also known as phantom power, idle load electricity, or standby power, refer to appliances and electronics that draw power when they are plugged in but not in use. Vampire energy can account for up to 20% of a household's monthly electricity bill or $165 per household per year, according to the Natural Resources Defense Council (NRDC). This amounts to $19 billion in wasted electricity across the United States annually.
Vampire electronics include devices with remote-ready functions, such as televisions, computers, consoles, chargers, and kitchen appliances. These devices remain in a standby state, ready to receive signals to switch on, and can consume almost as much electricity as when they are in use. For example, a TV on standby mode consumes 48.5 watts, while an in-use LCD computer monitor uses 55 watts.
Reducing vampire energy consumption can be achieved through simple measures such as unplugging devices when not in use, choosing energy-efficient appliances, and limiting automatic updates. While unplugging every appliance may not be practical, identifying less frequently used devices, such as microwaves, and unplugging them after each use can help reduce vampire energy.
Additionally, choosing items without a clock or digital display can reduce power consumption, as these features contribute to higher vampire energy usage. Smart devices with extra features, such as smart refrigerators with internet connectivity, can also draw additional power, impacting small businesses as well as homes.
By being mindful of vampire electronics and implementing energy-saving strategies, individuals can reduce their energy consumption, lower their electricity bills, and contribute to environmental conservation.
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Unplugging devices saves money and extends their lifespan
Leaving devices plugged in can waste electricity, and unplugging them can save money and extend their lifespan. This is because many appliances continue to draw power even when they are shut off or on standby. This is known as "phantom load", "phantom power", "idle electricity", or "vampire electronics".
The average home has dozens of items plugged in at any given time, and 75% of the electricity these devices consume is used when they are not even on. This can add up to 10% of a home's energy costs, or around $165 per household annually in the United States.
Unplugging devices can help reduce this waste and lower your energy bills. It can also prolong the life of your device by stopping mini-charging cycles and preventing it from overheating. For example, chargers continue to use power even if your device is not attached or fully charged. Adapters with auto shut-off can automatically cut the power when your device is fully charged, saving money and extending the life of your device.
However, it is important to note that unplugging some devices, such as refrigerators, ranges, and dishwashers, may be unwise or impractical. Additionally, anything with a clock that needs to be reset after a power outage should be left plugged in. Instead of unplugging things individually, you can use power strips to turn off or unplug multiple devices at once.
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Frequently asked questions
Yes, it does. This is known as "phantom power", where devices draw electricity even when they are shut off or on standby.
The Natural Resources Defense Council estimated that devices left on 24/7 cost the average US household around $165 every year. This adds up to $19 billion worth of electricity wasted across the country.
Devices such as TVs, gaming consoles, chargers, electric toothbrushes, and kitchen appliances like coffee makers and blenders are common culprits.
You can purchase power strips to easily turn off multiple devices at once. Alternatively, you can buy an adapter with auto shut-off for less than $10, which automatically cuts the power when your device is fully charged.
