The first thing you should do is to make sure your home is well insulated and seal up any cracks, gaps, or air leaks. Most homes waste up to 60 percent of the energy they use, due to air leaks and poor insulation.
Second, turn down the heat, and you don’t have to turn it down that much. Bringing it down just one degree can save you five percent on energy costs.
Third, turn down your water heater. Every ten degrees you go down there can save you another five percent.
Also, check your lighting and replace those old bulbs.
And finally, unplug that old, extra refrigerator, the one you have in your garage or basement. Just doing that will help save you a couple hundred dollars a year.