I think miners should start invest on renewable energy source (solar panels, wind turbines) to lessen the impact of bitcoin on environment?
I agree with you that investors on miners should invest on renewable energy but their power consumption not even a fraction of the industrial and manufacturing company.
There are already miners shift to renewable practice to save money. Renewable energy may expensive to start but it is more cheaper in the long run.
The idea of using renewable energy to exploit bitcoin is great, I've also heard about this issue quite a lot. But the use of renewable energy means you have to invest a huge amount of money so few miners will accept it. In order to be able to use more renewable energy for bitcoin mining, I think bringing together many miners together and investing in renewable energy will then exploit bitcoin with the same power. create. This is a way to reduce the initial cost of installing equipment that creates renewable electricity.