Some electric energy could be generated, in my opinion. The efficiency is a question.
Fluctuation would be a question, such as climate and seasons.
Cryptocurrency computation would probably involve internet access, but, yes.
I thought about placing solar panels in my backyard to run bitcoin miners.
Summers have high temperatures, where I live.
Electric generation for the grid requires grid connection building.
Using generated electricity to run crypocurrency miners would be the way to avoid
dealing with the grid.
To me it seems to be a good idea.