Commercialising thermal energy storage: Progress made and challenges that lie ahead

7 Jul 2026 I thank the Renewable Thermal Collaborative (RTC) for organising a webinar highlighting some of the recent achievements of thermal energy storage technologies. Conceptually thermal-energy storage is quite simple. You heat up a material and it stores energy either in the form of sensible heat, latent heat (phase change) or thermochemically. At medium grade, with temperatures of up to…