High-Temperature Superconductors are a class of ceramics that conduct DC electricity with zero resistance when cooled to cryogenic temperatures (20-77 kelvin). They are identified as “high” to distinguish them from low-temperature superconductors (LTS), which need to be cooled to almost absolute zero (~4 K) before they exhibit superconducting behaviour.
Incorporating HTS technology means smaller, easier to maintain and lower total lifetime cost devices in comparison to competing technologies.