Heute mit einer aktuellen Studie über Indiana:

"(...) the primary rationale for DST (Daylight Saving Time) has always been to promote energy conservation. Nevertheless, there is surprisingly little evidence that DST actually saves energy. This paper takes advantage of a natural experiment in the state of Indiana to provide the first empirical estimates of DST effects on electricity consumption in the United States since the mid-1970s. (...) Our main finding is that—contrary to the policy’s intent—DST increases residential electricity demand. Estimates of the overall increase range from 1 to 4 percent (...)"