What about graphene and CNT cabling instead?

How do the power requirements for carbon-based cabling differ from those for fiber and copper?

IIRC there are already HV cables similar to these for High Voltage Power Line power transmission applications?

"Core-sheath composite electric cables with highly conductive self-assembled carbon nanotube wires and flexible macroscale insulating polymers for lightweight, metal-free motors" (2025) https://link.springer.com/article/10.1007/s42114-025-01302-4

"Ultrastrong Carbon Nanotubes–Copper Core–Shell Wires with Enhanced Electrical and Thermal Conductivities as High-Performance Power Transmission Cables" (2022) https://pubs.acs.org/doi/abs/10.1021/acsami.2c13686 .. https://scholar.google.com/scholar?cites=1535585233454942914...

"Highly conductive hybrid carbon nanotube fibers: Strategies and future directions for replacing copper with next-generation conductors" (2025) https://www.sciencedirect.com/science/article/abs/pii/S13598...