JGERI is an international, open-access, and free-of-charge journal in the field of green and renewable energies, published quarterly, only electronically, in cooperation with the Renewable Energy Research Institute (RERI) of Arak University and Iranian Association of Electrical and Electronics Engineers (IAEEE). Articles accepted and published by JGERI are in three formats: research articles, review articles, and applied articles. JGERI accepts manuscripts that provide results of scientific achievements in a very wide scope of fundamental, engineering, and industrial research focusing on green energy.