Powering the US without emitting CO2 generally requires either (1) lots of new transmission lines to share wind/solar between regions, or (2) lots of nuclear so

Powering the US without emitting CO2 generally requires either (1) lots of new transmission lines to share wind/solar between regions, or (2) lots of nuclear so we don't have to. > Direct current (DC) is the worst kind of power type for long distance transmission. AC was traditionally used for long range transmission because a transformer can easily increase or decrease the voltage. Transmitting DC is actually more efficient, but it requires modern semiconductor technology to generate the voltages necessary. > My understanding is that solar and wind generated power has shown not to be consistent enough and too localized That's why we would need transmission to make it non-local.