Only in the Bitcoin network produces about 50 quintillion operations per second. Based on each received us dollar, such calculations require 17 MJ of energy, this is two - three times more than the usual extraction of gold, platinum or rare earth metals. The only resource that requires energy greater than  this level , is aluminum, the electrolysis of which consumes really huge amounts of enegry.

source: https://naked-science.ru/article/sci/mayning-kriptovalyut-trebuet-bolshe