American superconductor CEO Greg Yurek says that in the long run, the cost of superconductor transmission cables will be below that of adding new aboveground copper power lines.

美国超导公司CEO Greg Yurek声称在长期看来，超导体传输电缆的费用将会低于增加新的地上铜电缆。

youdao

However, there are still some technological hurdles to overcome before superconductors replace the copper wires in our power grids. The main issue is cost.

然而要在电网中用超导体完全取代铜导线，目前仍然有一些技术障碍，最关键的问题是费用。

youdao

"They typically had a steel casing, copper for conducting power down them and optical fibres for collecting data, " he said.

BBC: Robot sub aims for deepest ocean

To make the light travel enormous distances, thousands of volts of electricity are sent through the cable's copper sleeve to power repeaters, each the size and roughly the shape of a bluefin tuna.

WSJ: A Dive Into the Digital Deep

The real advantage is that the lack of resistance means that a given thickness of superconducting cable can carry between two and ten times as much power as the same thickness of copper.

ECONOMIST: Superconducting power cables