Genuine question, wouldn’t large mining farms avoid regions where electricity is in high demand, and therefore have higher electricity rates, making it unprofitable for mining? Plus electricity generated is only “wasted” if there’s a surplus and the surplus isn’t used.
Excess Energy is never wasted, that is a myth.
Most Power Grids are interconnected, they have to maintain a % of power to keep their grid stable,
when their usage is lower, they sell the so called excess energy to the other grids.
(Their is No wasted energy.)So their is no massive amount of excess energy in the grid system.