While potential energy savings are disputed, panelist Peter Shattuck said after Congress in 2005 extended daylight saving time by several weeks, energy consumption during that additional period decreased by 0.5 percent.

“If people don’t have to turn on the lights as early, they use less electricity,” said Shattuck, Massachusetts director for the Acadia Center, an energy and environmental advocacy group.

Read the full article from the Portland Press Herald here.