One way to cut down on your energy consumption is to use energy saving bulbs or compact fluorescent bulbs (CFL). You can calculate the energy savings by using these CFLs on your light fixtures in the Enviromental Defense Fund website HERE. They have this calculator where you input the bulb wattage and the state where you live in and it will calculate your savings by using these bulbs.
You can save more than $30 in your electricity bill over each bulb's lifetime. It also use up 75% less energy than the old incandescent bulb and it lasts a long time.