Prof. Mathias Noe and Dr. Markus Bauer published a paper about the application of superconductors in high-current cables in Physik unserer Zeit.
You can download the paper here: Paper “Without Resistance”
Excerpt:
Superconducting cables and wires are well developed and the first economic applications are foreseeable. One obstacle to widespread application is the still insufficient number of successful prototypes in long-term use. On top of that, there is a lack of knowledge about the many possible applications and the degree of maturity of the technology.