Dive Summary:

• The Wall Street Journal looks back at an article that it published in 2008 about studies showing that observing daylight-saving time wastes electricity.
• A University of California-Santa Barbara professor and Ph.D. student examined seven million monthly meter readings from Duke Energy Corp. and found that switching clocks over from standard time cost Indiana residents $8.6 million, thanks to air-conditioning and heating.
• Another study in Australia from 2007 also suggested that clock changes increased energy use.

From the article:

"... Their finding: Having the entire state switch to daylight-saving time each year, rather than stay on standard time, costs Indiana households an additional $8.6 million in electricity bills. They conclude that the reduced cost of lighting in afternoons during daylight-saving time is more than offset by the higher air-conditioning costs on hot afternoons and increased heating costs on cool mornings. ..."