Alternative energy is any energy source that is an option to fossil fuel. These options are proposed to address worries about such fossil fills. The way of what constitutes an option energy source has changed impressively over the long haul, as have contentions in regards to energy utilization. Today, in light of the mixed bag of energy decisions and varying objectives of their supporters, characterizing some energy sorts as "option" is profoundly questionable. In a general sense, Alternative energy as it is at present imagined, is that which is created or recouped without the undesirable outcomes inalienable in fossil fuel use, especially high carbon dioxide emanations, an imperative component in an unnatural weather change.