Solar hot water tank acts as the central component of a solar thermal setup, receiving heat either directly from solar collectors or indirectly through a heat exchange coil connected to collectors on roofs or open areas. The tank is well-insulated to minimize heat loss and maintain a stable supply of hot water for domestic or commercial use. Solar water tanks are engineered to withstand outdoor conditions and are often made with corrosion-resistant materials such as stainless steel, with options for pressurized or unpressurized designs. They may include one or more heat exchanger coils and can be integrated with auxiliary heating elements to ensure consistent performance when solar gain is low. These tanks are essential for maximizing the efficiency and reliability of renewable solar thermal systems.