An important goal of a strategic energy technology is to have competitive commercial technologies that allow electrical energy to compete directly with other fuels. Thermal energy storage stores excess thermal energy for later use . Thermal energy storage can be used to enable both heating and air-conditioning systems to operate in conjunction with the electrical power supply. Thermal energy storage is a technology that uses the change of internal energy of a liquid that undergoes a temperature change without phase change and stores the energy change that occurs in the heated or cooled liquid. 

Considering that up to 70% of our final energy consumption is due to heating/cooling, thermal energy storage systems come to the fore. Thermal energy storage is one of the key technologies of critical importance in the energy systems of the future. Thermal energy is the sum of the kinetic and potential energies of the atoms or molecules that make up a substance, and it occurs as a result of atomic or molecular vibrations. Thermal energy is stored as sensible heat, latent heat, heat of reaction or a combination of all these, with the change in the internal energy of the substance. Generally, in the sensible thermal energy storage technique, low or high temperature thermal energy is stored or withdrawn in an environment by changing the temperature of the solid or liquid storage medium. latent heat, In the thermal energy storage technique, the phase change energy (latent heat) released during the solid-liquid (liquid-solid) or liquid-gas (gas-liquid) phase change processes is utilized. In thermo-chemical storage technique, on the other hand, with the help of reversible endothermic or exothermic reactions, high amount of heat energy provides advantages in thermal energy storage applications that require long-term waiting. Within the scope of the platform, phase change materials for the storage of thermal energy, organic/inorganic solar energy storage materials and devices for PV-T applications, and high temperature storage materials can be developed and integrated into various clean energy applications. In thermo-chemical storage technique, on the other hand, with the help of reversible endothermic or exothermic reactions, high amount of heat energy provides advantages in thermal energy storage applications that require long-term waiting. Within the scope of the platform, phase change materials for the storage of thermal energy, organic/inorganic solar energy storage materials and devices for PV-T applications, and high temperature storage materials can be developed and integrated into various clean energy applications. In thermo-chemical storage technique, on the other hand, with the help of reversible endothermic or exothermic reactions, high amount of heat energy provides advantages in thermal energy storage applications that require long-term waiting. Within the scope of the platform, phase change materials for the storage of thermal energy, organic/inorganic solar energy storage materials and devices for PV-T applications, and high temperature storage materials can be developed and integrated into various clean energy applications.