Miners already use renewable resources: hydro, wind and solar, from big to small mining farms. I agree that this environmental friendly mining is not popular and big enough but why so serious?

If coal supply is here, on this planet, people will use it for many use cases, from mining to other activities in society. The same source of coal will be used, burnt without Bitcoin mining.

When the supply of coal is less and the technology for renewable resources become more popular, feasible, people exclusively miners will use it more. Mining farms if possible can set up mix energy supply from coal and renewable resources for day and night time.