Only recently are the majority of people actually seeing that the resources in the world are getting used up. Gas and coal are diminishing as their prices soar each passing day. People are now turning to alternative power sources as their primary power source.

Since the beginning of time and the evolution of humanity, the sun has played an important role. People have worshiped the sun as the sun god, Ra. It has played a role in Greek Mythology and a number of religious beliefs. As far back as the time of the Aztecs and the Incas, to the more modern times of native Americans, the sun has played a part in their religious beliefs. Such as been the background of solar energy.

Currently, there are two primary categories of energy sources available to the consumer. One is non-renewable energy and the other is renewable energy. Examples of non-renewable energy are diesel, coal, and petroleum. Renewable energy includes water, wind, and solar power.