At NARUC's February winter policy summit, amid conversations about grid reliability and steep increases in energy demand, over 40 regulators and staff attended a breakfast hosted by the Renewable Thermal Collaborative (RTC) and the Long Duration Energy Storage (LDES) Council to. . At NARUC's February winter policy summit, amid conversations about grid reliability and steep increases in energy demand, over 40 regulators and staff attended a breakfast hosted by the Renewable Thermal Collaborative (RTC) and the Long Duration Energy Storage (LDES) Council to. . At NARUC's February winter policy summit, amid conversations about grid reliability and steep increases in energy demand, over 40 regulators and staff attended a breakfast hosted by the Renewable Thermal Collaborative (RTC) and the Long Duration Energy Storage (LDES) Council to discuss how thermal. . Thermal energy storage (TES) is a critical enabler for the large-scale deployment of renewable energy and transition to a decarbonized building stock and energy system by 2050. Explore energy storage resources How much energy is stored in a coffee thermos? How about in a tray of ice cubes? Thermal. .