Renowable Energy Many experts define renewable energy as something that occurs naturally and widely. The sun is considered to be one of the best sources of this kind of energy amidst biomass, wind power and others. Many renewable power sources depend on nuclear which in turn mean that the nuclear power comes from our sun. The sun produces both light and heat energy with huge reactions. Gasoline and diesel belong to the non-renewable type of energy. Simply put, these are resources which c