If governments forced miners to use solar energy only, would Bitcoin become more sustainable and valuable, or would it reduce mining capacity drastically?
This is not actually sustainable due to weather changes so if it happens that bad weather hits and solar farms cannot harvest enough energy then provably mining operation would stop.
Also its high upfront cost knowing that you need to spend lots of money to have lots of panels so that you can operate a solar power Bitcoin mining operation.
But if they could have Hydro,wind and solar energy sources then maybe with this they could make their mining operation became maybe sustainable. This is environmental friendly way but unfortunately you cannot have those 3 options since not everyone have luxury to have those resources.