The issue is actually that DC voltage conversion is much harder than AC, because AC can use transformers, and DC can’t. This is especially a problem at high vo

The issue is actually that DC voltage conversion is much harder than AC, because AC can use transformers, and DC can’t. This is especially a problem at high voltages and currents. Also, DC arcs don’t self extinguish as well as AC arcs do, so DC arcs are a lot more dangerous and destructive. It’s why HVDC lines are still relatively rare (and capital expensive), and typically used for long haul or under salt water, where the inductive loss from AC would cost more than the higher capital costs required for DC voltage conversion and stability.