These proceedings present articles in the field of hydrogen energy, renewable energy and materials, dealing with new developments in theory, analytical and numerical simulation and modelling, experimentation, demonstration, advanced deployment and case studies, and results of laboratory or field operational tests. The main topics covered include: Hydrogen Energy, Catalysts and Hydrogen Storage, Transportation and Aerospace Applications, Hydrogen Production and Delivery, Solar Hydrogen and Renewable Hydrogen, Bio Hydrogen and Bio Gasification, Electrolysis and Electrolyzers, Fuel Cell Technology, Chemical Carriers and Hydrides, Fuel Cell Systems Modelling, Hydrogen Systems Modelling, Renewable Energy, Photovoltaic Systems and Solar Energy, Engineering, Solar Thermal Applications, Wind Energy Systems, Fuel Cells, Renewable Energy Utilizations, Electrolysis and Electrolyzers, New Energy Applications, Hydro Power, New Energy Materials and Devices, Bioenergy, Electric Power Systems, Power System Stability, Power System Reliability, Power System Resiliency, Power System Optimization, FACTS Applied to Power Systems, Intelligent Methods Applied to Power System Studies, Active Distribution Network, Control, Operation, and Planning of Energy, and Storage System and Electric Vehicle.