Profs. Matthew Kotchen of Yale University and Laura Grant of the University of Wisconsin-Milwaukee found that daylight-saving time increases energy use by over 1% in Indiana during those months—adding some $9 million to energy bills annually, plus sending an additional 188,000 tons of carbon dioxide into the atmosphere. Daylight-saving time imposes the greatest costs in the fall, the researchers found, when it prompts increases in morning heating without any savings on lighting. But it also imposes high costs in July and August, when increased air-conditioning bills more than offset the savings in lighting. Another study found similar effects in Australia.
Daylight saving time is a no win proposition and the United States should abolsh this dated practice.
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