Resistance is futile

ToughSF has been essential Twitter reading lately! Here's Shanghai, bringing superconductors over 1.2 km. 2200 amps between two 220 kV substations. Resistance is, er, zero ohms. I take it that's power-delivery from the main grid to subgrids.

Mainly it's an economic problem they'd solved, namely they used their own stuff rather than buying it from, er, us. I still doubt if chilling a pipe with liquid nitrogen over 1.2 km is less expensive than just to run a current over copper and take the loss. Shanghai seem to think they've solved other problems: high electricity density and limited space. Next stop, Lagos, pop. 100 million, I guess...

As for deep space stations, this should be great, if only because heat-radiation is an inherent problem. And Jansen was going to settle millions of people on his spinning rubblepiles. Main problem I see is the inherent expense of nitrogen itself.