I believe he thought that by extending Daylight Saving Time, more energy would be saved. With the sun out longer for four extra weeks, or so it would seem, I think he might have thought that people would use less energy? I cannot remember the specifics but you can see the bill provisions and such. http://en.wikipedia.org/wiki/Energy_Policy_Act_of_2005
^... there are some places that they don't do it.. .like Phoenix Arizona doesn't ... it's like the places in in the edge of a timezone that doesn't ... or something... ... 2 much thinking about time...i'm getting a headache