Based on an analysis of data from an extension of Daylight Savings Time occurred in parts of Australia around the 2000 Sydney Olympics, researchers at the University of California Energy institute found that an extension of DST may not save energy.
Although the distribution of energy usage shifted, spiking earlier in the morning, the total usage was more or less unchanged.
Given that the new energy policy only applies to the U.S., there is the potential for a larger pseudo-experiment on the energy impact of DST. We can compare changes in energy usage in the U.S. against that in other countries where the normal schedule was unchanged or against past usage in the U.S., using a regression to control for other factors. The results could have interesting implications for future energy policy.
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