MgB₂ Superconducting Wire materials

Superconducting energy storage is a device
that stores power in the form of magnetic energy by passing
an electric current through a coil made of superconducting wire
that has no electrical resistance.
You can store excess energy and deliver power where it's needed.
Superconducting energy storage is capable of storing hundreds of megawatts (MW) of power and has the advantage of extremely fast input and output speeds.
It also improves grid stability by responding to load fluctuations,
and there is no performance degradation during repeated
charging and discharging for superior longevity and reliability.