Long-Duration High-Temperature Thermal Energy Storage for Grid and Industrial Applications

C.K. Ho
Sandia National Laboratories,
United States

Keywords: energy storage


This presentation provides an overview of high-temperature long-duration thermal energy storage for the electrical grid and industrial applications (> ~10 hours and temperatures up to ~600 – 800 °C). A review of conventional molten-salt storage in concentrating solar power (CSP) plants is presented, followed by a discussion of emerging technologies using low-cost solid-particle media. Two particle-based thermal storage technologies – one employing a moving particle bed and another employing a fixed particle bed – will be discussed. Applications for deep decarbonization of the electrical grid and industrial processes will be presented, along with remaining challenges and research opportunities