Thermal energy storage (TES) is a crucial technology that enables the efficient management of heat energy for various applications. By storing excess thermal energy during periods of low demand and releasing it when needed, TES enhances energy sustainability and grid reliability. TES systems come in various forms, including sensible heat storage, latent heat storage, and thermochemical storage. Sensible heat storage involves the retention of heat in a material, such as rocks or water, while latent heat storage uses phase change materials like paraffin to absorb and release energy during melting and solidification. Thermochemical storage involves reversible chemical reactions for energy storage. One key advantage of TES is its ability to integrate with renewable energy sources, such as solar and wind, addressing the intermittent nature of these resources. This technology is employed in diverse sectors, including residential heating, industrial processes, and power generation. TES contributes to peak shaving and load balancing, reducing the overall energy consumption and lowering operational costs. Additionally, TES systems play a vital role in enhancing the efficiency of concentrated solar power plants, enabling the continuous generation of electricity even when the sun is not shining. As the world strives for sustainable energy solutions, the development and widespread adoption of thermal energy storage technologies are pivotal for achieving a more resilient and eco-friendly energy landscape.