The objective of this research is to cover both old and the latest and emerging technologies in the field of re newable energy sources. The topic describes the various forms of renewable sources of energy and their applications. The term Nano technology and its applications have captured the worldwide market. The nanomaterials which are developing using this technol ogy can be incorporated into the devices so that renewable energy can be converted or generated more efficiently. Nanomaterials have the potential to change the way we generate,deliver and use energy. https://www.ijiert.org/paper-details?paper_id=140124