In the following decades, short superconducting cables were built and tested to carry alternating current (AC) in Brookhaven, N.Y., and near Graz, Austria, with the latter operating connected to the local grid for several years.

• 接下来的几十年，有人做出较短的超导电缆，在纽约布鲁克海文和奥地利格拉茨附近测试输送交流电，在奥地利还连接当地的电力网，运作了好几年。