Energy Cold thermal energy storage Big personal savings is usually created through the use of refrigeration potential during off-peak hours and "storing the cold" for when It can be needed. A patented cold thermal energy storage system from O-Hx works by using ice slurry to improve the performance of chillers. https://purethermal.co.uk/media-news/pure-thermal-webinar-can-icebat-cold-thermal-energy-storage-provide-an-alternative-cooling-design-option/