In order to find ways to save on your energy costs, you can always conduct a do-it-yourself energy assessment. Certainly, you may also want to look for a new energy supplier like IDT Energy if you live in a state that has deregulation.
A do-it-yourself energy assessment includes a simple walk-through of the home where you will look for problems, air leaks, and more. Keep paper with you and a checklist of the area so that you can keep track of what you have inspected and problems that you discovered. For a more extensive energy assessment, you can always hire someone to come to the home for an evaluation.
Your energy assessment should include locating any air leaks, looking at insulation, evaluating your heating and cooling units, and taking a look at your lighting. You can read up on each area to find out exactly how to evaluate your usage and your needs, and how to make improvements based on your findings.