Using energy effectively is important to achieve the goal of sustainable development. In the world today, energy consumption is increasing rapidly due to rapid increasing of world population. Therefore, energy demand is also increasing for urbanization, industrialization, widespread use of technology and electronic products, etc. Thus, the energy supply security become important. Countries has explored new renewable energy resources in order to reduce their dependence on fossil fuels imported from oil producing countries. On the other hand, the traditional energy sources are directly available on the nature. However, with the increasing of world’s population, the natural resources are destroyed and the world is undergoing with climates changes. So it is important both individuals and institutions to learn the value of energy and have the knowledge how to use energy effectively. In order to achieve a better social and economic future, it is important to use energy more efficiently and to use new renewable energy sources. In this context, in this study, Turkey and the EU renewable energy policies and government supports provided to the enterprises in this field were examined and compared.