The Wall Street Journal reported today on the question of whether extended Daylight Saving Time saves energy. The story, “Daylight Saving Wastes Energy, Study Says” (subscription required) An economist studied Indiana’s experience with Daylight Saving Time, and found:
Having the entire state switch to daylight-saving time each year, rather than stay on standard time, costs Indiana households an additional $8.6 million in electricity bills. They conclude that the reduced cost of lighting in afternoons during daylight-saving time is more than offset by the higher air-conditioning costs on hot afternoons and increased heating costs on cool mornings.
We note, again, that the 2005 Energy Policy Act, which lengthened DST by three weeks, required a study of the effect. From the PL109-58:
SEC. 110. DAYLIGHT SAVINGS.
(a) AMENDMENT.—Section 3(a) of the Uniform Time Act of 1966
(15 U.S.C. 260a(a)) is amended—
(1) by striking ‘‘first Sunday of April’’ and inserting ‘‘second
Sunday of March’’; and
(2) by striking ‘‘last Sunday of October’’ and inserting ‘‘first
Sunday of November’’.
(b) EFFECTIVE DATE.—Subsection (a) shall take effect 1 year
after the date of enactment of this Act or March 1, 2007, whichever
(c) REPORT TO CONGRESS.—Not later than 9 months after the
effective date stated in subsection (b), the Secretary shall report
to Congress on the impact of this section on energy consumption
in the United States.
(d) RIGHT TO REVERT.—Congress retains the right to revert
the Daylight Saving Time back to the 2005 time schedules once
the Department study is complete.
The Secretary in this case is the Secretary of Transportation, who overseas time zones in the United States.
We ask again: Nine months after March 1, 2007, is December 1, 2007, right? It’s now almost March, 2008. So where’s the report?
After all, we switch again on March 9th this year. It would sure be nice to know if there’s any particular reason why.
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