Renewable energy sources are those that do not rely on stored energy resources. Various forms of renewable energy are currently used for the generation of electricity. As with most industries, the relative cost of a product becomes less expensive as technologies improve and product knowledge increases, with the renewable energy industry being no exception. Using renewable resources, such as the sun, would provide almost unconditional access to energy without depleting the world’s natural resources. In this chapter, we are interested in the study of solar energy and its different technologies, particularly to the solar chimney system.