Dear Colleagues,

There has been an increasing concern regarding the decarbonization of the world and the minimization of fossil fuel usage, aiming at environmental sustainability and the well-being of our society. In this process, renewable energies become a strong ally. Therefore, scientific research is essential for this transition to occur as appropriately as possible, from the basic aspects of production until its application. Among the renewable energy sources that are abundant in the world and deserve to be highlighted, we can mention wind, solar, and biomass, which are available to be used in the most varied fields of industry, automotive, and energy generation, as well as be used to obtain green hydrogen, an energy vector that recently has been widely researched and studied in the most diverse countries of the world. As such, we defend the study and research in the area of renewable energies, including their applications in the most varied fields they can reach. The main objective of this Special Issue is to improve knowledge about what has been studied, investigated, and assessed in relation to renewable energies worldwide, in the most varied research centers, permitting interactions between researchers while reliable information is interchanged. Our aim is to provide science-based knowledge, innovative ideas/approaches, solutions, and applications related to renewable energy. We invite authors to share their perceptions, knowledge, investigations, and findings on renewable energies in general, as well as their applications, with the intention of making available rich material to serve as a guide related to the subject.

In particular, the following topics are of significant interest:

• Energy resources—bioresources (e.g., biomass, waste), fossil fuels (including natural gas), geothermal resources, hydrogen, hydropower, nuclear, marine and ocean, solar, and wind;
• Applications—buildings, industry, and transport, including information communication systems in addition to specific apparatus/processes;
• Use and storage—batteries, conversion technologies, fuel cells, storage technologies, technical developments, and technology scale;
• Environment—impacts, both positive and negative, on various aspects of our planet;
• Sustainability—generation of carbon credits and reduction of impacts on the environment and society.

Prof. Dr. Paulo Rocha
Prof. Dr. Bahram Gharabaghi
Guest Editors

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• renewable energy
• energy storage
• solar energy
• wind energy
• biomass
• green hydrogen
• applied energy
• computational fluid dynamics
• machine learning
• deep learning
• forecasting