So back when the electrical grid was being created it was basically impossible to step up and down DC. So it had to be distributed at the voltage it was used at

So back when the electrical grid was being created it was basically impossible to step up and down DC. So it had to be distributed at the voltage it was used at. AC could be stepped up and and down with transformers which reduces losses. Now though that we have the circuitry to step up and down DC fairly easily you can actually get more efficient long distance transmission with DC due to not having to factor in things such as skin effect. I don't think things will change quickly but I do believe we will be seeing more DC systems in the home and workplace in the future since it will also mesh with renewables better. https://en.wikipedia.org/wiki/High-voltage_direct_current#Comparison_with_AC https://en.wikipedia.org/wiki/High-voltage_direct_current#Co...