Wow. I wasn't aware that so little rail is electrified in some countries. I was especially surprised about my own country Poland that has barely over 60% rail electrified, with European average being roughly similar. USA is below 2% vs China with over 60% electrification of the network of nearly exactly same length. I have no idea why almost nobody talks about that. I know rail is superbly efficient, but it still would be a huge win if USA could bring up their electrification to at least first world countries average.

Mexico and Canada have even more abysmal rates. I guess entire continent of North America was sleeping when the world started doing electric trains.

I always thought that nearly all rail was electrified and have trouble even imagining rails without wiring.