Solar, wind, and hydropower advancements are transforming the global energy landscape with cleaner, more efficient power alternatives. Research in this area includes novel turbine designs, ultra-efficient solar cells, and improved hydropower storage systems. Studies focus on increasing power output, reducing costs, and enhancing resilience against climate impacts. Integration of these technologies into smart grids enables more reliable and flexible energy supply. The journal features work on scaling renewable deployment in diverse climates and terrains. These innovations support global strategies for decarbonization and sustainable energy expansion.