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Weather Blog: Does Daylight Saving save energy?

Weather Blog: Does Daylight Saving save energy?

by Mario Gomez / KHOU 11 Weather

khou.com

Posted on March 7, 2013 at 7:51 AM

Updated Thursday, Mar 7 at 8:47 AM

HOUSTON -- The second Sunday of March is almost here and that means it's time to spring forward at 2 a.m. Sunday morning. But is it time to get rid of this antiquated practice that goes back to World War I?

The United States started daylight savings during World War I in order to save energy for war production.

Factories took advantage of the later hours of daylight between April and October to save energy. The practice continued through World War II. Since the wars, and especially in southern states, the United States has increased its use of air conditioning.

During hot periods, daylight savings time means air conditioners tend to run more when people arrive home from work, while in cooler periods more heating is used.

Recent studies done in Indiana in 2006 have shown no energy savings, in fact power usage has increased. The adoption of new high efficient light bulbs, may also off-set the so called energy savings of daylight savings.

Other recent findings have found health and safety risks caused by sleep deprivation during periods of daylight savings. The abrupt change to a person's daily schedule increased the risk of having a heart attack by 10% on the Monday after daylight savings started.

Workers had more car accidents and work place injuries due to a lack of sleep caused by the time change.

Read more about the energy savings: phys.org/news187946326.html#jCp

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