Not really. The higher the volts, the fewer amps and losses. So, if you can just get the voltage high enough, there's really no limit. Not sure what the curren

Not really. The higher the volts, the fewer amps and losses. So, if you can just get the voltage high enough, there's really no limit. Not sure what the current highest volt transmissions are. Maybe a couple million volts on some DC lines? But I think that's good enough for hundreds, if not thousands, of miles of efficient transmission.