Today, we're using more energy. Daylight savings time ended in almost all of the US yesterday, which means that the lights at home are going to burn an hour more than they did last week. What's that mean for your bottom line? California studied this very question a few years back and concluded that everyone in California will use, on average, about 3400 megawatts more per day—about .5% of the state's energy use.
So you're unlikely to see a big difference in your bill; saving energy, it seems, makes sense only when you think of it at a macro level.
When did it get dark where you are?
More resources: • Switch to compact fluorescents to save money on your electric bill • Try out energy-efficient track lighting to get light just where you need it • Monitor your home's consumption of electricity with TED... • ...or use Mr. Sketch for a low-tech way to keep track of energy image by davidallag via sxc.hu