How much energy does daylight saving time actually save? - | Chattanooga News, Weather & Sports

How much energy does daylight saving time actually save?

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It's an adjustment made twice a year in hopes of saving sunlight and energy. 

"I can tell I'm missing that hour of sleep," Tracey Lawson said, "It takes a good two weeks to get adjusted."

This weekend, we will turn our clocks back one hour for daylight saving time. 

A 2008 Department of Energy study shows U.S. electricity use decreased by 0.5% for each day of the extended daylight saving time resulting in a savings of 0.03% for the year as a whole. 

Those savings may seem small in percentage terms, but they actually added up to 1.3 billion kilowatt-hours. That's enough to power about 122,000 average homes in the U.S. for a year. 

On a daily percentage basis, electricity savings is slightly higher during the summer months. 

But Lawson says banking the sunlight is worth the adjustment. 

"It gives you just a little bit longer daylight, and if you work during the day, you really need those daylight hours. You need a little bit of sunshine," she added. 

The study also found some southern portions of the United States exhibited slightly smaller impacts of extended daylight saving time on energy savings compared to the northern regions, a result possibly due to a small increase in household air conditioning usage. 

To read the full study, click HERE

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