Phantom energy

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The lights are off, the house is quiet and nothing seems to be running. But electricity is silently flowing through the plugs in your home. This hidden drain is known as phantom energy.

Also called vampire energy, the wasted electricity comes from leaving devices plugged in when they're not in use. That could range from household items such as phone chargers and microwaves to TVs and gaming consoles.

This wasted electricity accounts for about 5% to 10% of home energy use, depending on factors like the age of the equipment, according to Alexis Abramson, dean of the Columbia Climate School.

"Phantom energy depends on ... what kind of systems you have and how much they've improved over time," Abramson said.

For example, televisions that are connected to the internet and have smart wake features that allow them to interact with phones and other devices can consume up to 40 watts of energy during the hours of the day that the TV would normally be off, according to Matt Malinowski, director of the buildings program at the American Council for an Energy-Efficient Economy. That's almost 40 times as much as a regular television.

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"The good news is there have been new, renewed efforts to tackle this," Malinowski said.

He said advocates and manufacturers have come up with a voluntary agreement seeking to reduce the amount of energy smart televisions use when they're in standby mode.

Phantom energy contributes to climate change because power drawn by unused devices can increase demand for electricity from sources that release planet-warming emissions. Aidan Charron, associate director of Global Earth Day, said that while the amount may seem small when a person looks at their individual utility bill, the environmental toll of phantom energy is significant when multiplied over homes across the country.

"Just take a little step of unplugging the things that you're not using," Charron said. "It will save you money and it'll save emissions in the long run."

What you can do

Some of the main culprits when it comes to draining energy are appliances that are constantly connected to electricity, such as those with a clock.

"Do you really need your microwave to tell you the time, or can you unplug your microwave when you're not using it?" Charron said.

While unplugging devices may seem burdensome, it significantly contributes to reducing emissions.

Charron recommends starting with small steps like unplugging chargers for phones and other devices once the battery is fully charged. The next step is moving to other appliances such as unplugging an unused lamp.

If unplugging sounds too hard, regularly checking your settings and disabling any extra features you're not using that could be draining energy help, too. For example, smart televisions often have optional features that can be turned off so the television isn't listening for signals from other devices while in standby mode.

"If you're not using it, then you're getting no benefit, yet you're paying the price and increased the energy use," Malinowski said.

How individual actions can make a difference

Individuals also tend to take more sustainable actions, such as unplugging devices, once they learn what they can do to decrease their household emissions efficiently. Those actions could contribute to reducing U.S. emissions by about 20% per year, which equals about 450 tons of carbon dioxide, according to Jonathan Gilligan, a professor of earth and environmental science at Vanderbilt University.

The choices individuals take in their daily lives all add up, Gilligan said, mainly because of how much the U.S. population contributes to direct greenhouse gas emissions.

"The question becomes, what can we do to try to address this?" Gilligan said. "Phantom power is one part of this."

The more individuals decrease their footprint, the more likely it is that others will follow, too, and eventually, those actions may turn to societal norms, according to Gilligan, because individuals don't want to feel like they're being irresponsible.

"This is a place where psychologists find that this effect is real. If people see that other people are doing actions to reduce their greenhouse gas emissions, they want to do that" Gilligan said.

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