Concentrating Solar Thermal (CST) technologies play a crucial role in the global shift towards renewable energy by efficiently harnessing solar power for thermal and electrical applications. These systems, comprising parabolic troughs, solar power towers, and linear Fresnel reflectors, concentrate sunlight to achieve high solar flux for various uses, including solar hydrogen production and solar desalination, among others. While promising, CST technologies face challenges like material costs, heat transfer efficiency, and concentrator optimization. This research initiative aims to address these hurdles by fostering collaboration among experts to enhance CST performance. The focus lies on exploring new solar concentrator designs, advanced materials for solar receivers, and efficient thermal storage methods to ensure a steady energy supply. Furthermore, integrating CST with other renewables like solar photovoltaics can boost overall energy efficiency. The Research Topic invites original contributions that advance CST technologies, covering topics such as solar thermal designs, receiver materials, thermal storage, renewable energy integration, solar desalination, hydrogen production, and assessing economic and environmental impacts. Through innovative research and practical applications, the goal is to overcome current limitations and unlock the full potential of CST technologies for a sustainable energy future.