The 4th International Conference on Advances in Energy Research and Applications (ICAERA'23) aims to become the leading annual conference in fields related to Advances in Energy Research and Applications. The goal of this energy conference 2023 is to provide a space for scholars from all over the world to present advances in the relevant fields and to foster an environment conducive to exchanging ideas and information. ICAERA'23 is an acronym for International Conference on Advances in Energy Research and Applications. Topics for ICAERA’23 include, but are not limited, to the following: Biomass, Biofuel, and Bioenergy Energy and Environmental Pollution Energy and Nanotechnology Energy Distribution Energy Financing Energy Storage Electric Vehicles Fossil Fuels Fuel Cells Geothermal Energy Hydroenergy Nuclear Energies, Prospects and Issues Smart Buildings Solar Cell Theory and Applications Solar Thermal Energy Wave and Tide Energies Wind Energy