[theold]

This cable is so efficient that it replaces six conventional copper cables, they say, thanks to the fact that it loses almost no electricity. The use of superconducting cables in electrical distribution would save billions of euros annually worldwide as well as millions of tons of CO2 because it would take almost maximum advantage of global energy production.

https://www.elconfidencial.com/tecnologi...l_3802998/

[sgbuffett]

Can it be used at room temperature?

There is no super conductor at room temperature.

[Levin]

Can it be used at room temperature?

There is no super conductor at room temperature.

Not at room temperature. 

According to the article during testing in July, the cable is under refrigeration. The article stated that it was the longest superconducting cable so far that is operational in an urban core.

https://interestingengineering.com/innov...conducting

https://zmscable.es/en/cable-superconduc...kv-prueba/

South Korea did it first in 2019 but with a 1km cable instead of a 1.2km cable. 

https://transformers-magazine.com/tm-new...ing-cable/

[Napoleon Porlumpar]

imagine what this cable can do for a hifi system.................

[sgbuffett]

Not at room temperature. 

According to the article during testing in July, the cable is under refrigeration. The article stated that it was the longest superconducting cable so far that is operational in an urban core.

https://interestingengineering.com/innov...conducting

https://zmscable.es/en/cable-superconduc...kv-prueba/

South Korea did it first in 2019 but with a 1km cable instead of a 1.2km cable. 

https://transformers-magazine.com/tm-new...ing-cable/

If need low temperature wouldn't the refrigerator system use up energy and negate the benefits?

[Levin]

If need low temperature wouldn't the refrigerator system use up energy and negate the benefits?

My thoughts too. Not enough info in the article on how they achieve high-temperature superconducting (although it is called HIGH temperature superconducting, it seill needs refrigeration, just not to as low as 4K degree).