All of us in modern society use energy, however, we do not all use energy in the same fashion. If we can explore and understand those differences, then we can learn which changes we can all make to create a more efficient society. Someone who has received energy audit certification is ideal to evaluate energy uses and make recommendations for improvement. Knowing how and why certain people use energy in the manner in which they use it, can provide enough information to identify ways to reduce overall energy use. In some instances savings can be realized by something as simple as changing the time of day when energy is used the most.