Ogando, J., "Cool Current," May 12, 2004, Design News, pg. 46  http://www.designnews.com [1]

High-temperature superconducting wire looks increasingly practical

High-temperature superconductors (HTS) sure sound like a good idea.  When fashioned into wires and cooled to about 77K, which passes for balmy in superconductivity circles, these ceramic materials can carry at least a hundred times more current than comparably sized copper wires.  Yet HTS wires have been so difficult and expensive to make that design engineers have viewed them as little more than a promising research project. [Read More [2]]