Robust commercial high-temperature superconductor
Robust commercial high-temperature superconductor
Found at http://spectrum.ieee.org/jul08/6428: "Last Wednesday, American Superconductor officially commissioned the world's first high-temperature superconductor power-transmission cable system to be used in a commercial power grid...The system commissioned last week, part of the Long Island Power Authority's grid and funded by the Department of Energy, consists of three cables operating at 138 kilovolts."