Daylight saving time is supposed to reduce energy use. It does not. In the modern economy, the benefit of lighter evenings is lost through darker mornings. The extension of DST a few years ago had no material impact on North American electricity consumption. Switching back and forth twice a year is a pointless and misguided policy that undermines our health and safety. The sensible approach would be to keep us on either Standard time or Daylight time all year round.
End of rant.