The main purpose of this article is to explain the positive specifications of renewable energy and the need to replace it with fossil fuels, especially oil. To achieve this goal, the main question is what are the most important advantages of the renewable energy, with respect to iran's situation. In response, it is suggested that most important advantages of these new energies are renewability, flexibility, cleanliness and creating job opportunities. New energies not only do not have the problems of fossil fuels, but also provide the sustainable development for the country. Accordingly, While Iran's dependence on oil in different aspects of political, economic, social and environmental has made Iran's security with serious challenges, new alternative energies provide development and sustainable security for countries. This article intends to discuss this issue through a descriptive-analytic method in three sections. The result will show that there is no way except using the renewable energy in Iran.