Who owns the reliable information that the network bitcoin uses more than 80% of the countries separately electricity. Bitcoin also multiplied by several times the amount of energy consumed in the last year. Is this really true, who will say? So there are thoughts that bitcoin in a couple of years will be a threat to the energy situation on the planet?
I think this number changes according to the degree of difficulty. And it's not so easy to calculate it all. I think in future technological developments, devices that consume less electricity will come.