It turns out that more daylight gives us more time to shop, drive, grill and perfect our golf game. What it doesn’t do is cut our energy use, as is the intent, says Michael Downing, a lecturer in English and author of Spring Forward: The Annual Madness of Daylight Saving Time.
In fact, when we lose an hour’s sleep as the eight-month DST season begins, it will not reduce our electricity use even by one half of 1 percent, says Downing, contrary to the most recent study by the Department of Energy.
While the government continues to claim that the country reduces electricity use for each day during DST, Downing says we come nowhere near that. Some studies do report small reductions in electricity use, but the most comprehensive study of household energy demand and many others report an increase in overall energy consumption ranging from 1 to 4 percent during DST.
“Every time the government studies [DST], it turns out that we are really saving nothing when all is said and done,” says Michael Downing. Photo: Melody Ko“Every time the government studies [DST], it turns out that we are really saving nothing when all is said and done,” says Michael Downing. “The barbeque grill and charcoal industries say they gain $200 million in sales with an extra month of daylight saving—and they were among the biggest lobbies in favor of extending DST from six to seven months in 1986,” he says. Lobbying alongside them that year was the golf industry, which says that additional month of daylight has meant more time on the links and an additional $400 million in revenue.
But what’s good for retail is bad for overall energy use, says Downing. “If it’s light when we leave work and we decide to go to the mall or a restaurant or head for a summer night at the beach, we don’t walk there; we get in our cars,” he says.
Gas consumption goes up during daylight saving time—“something the gas industry has known since the 1930s,” Downing says. That’s why it lobbied hard to reintroduce DST after two short-term experiments with it to conserve electricity and other energy resources during World Wars I and II.
But more driving also means more carbon dioxide in the atmosphere, which exacerbates climate change, says Downing. Moreover, the reduced cost of indoor lighting on sunny spring and summer afternoons is offset by higher air-conditioning costs at offices, factories and shopping malls.
“Every time the government studies [DST], it turns out that we are really saving nothing when all is said and done,” Downing says.