This was the main reason Chinese Miners shifted their base to Russia..
Refer article https://coinjournal.net/chinas-bitcoin-miners-considering-relocating-russia-us-thailand/
As electricity is cheap, and the cooling of Machines also will be easier due to temperature drop during winter..
This is also affecting Global warming issues as all the heat generated by this system, will surely hit the atmosphere, and the it will indirectly amount to some warming issues also.,.
RE: Bitcoin Mining Has Environmental Impact Due To Electricity Consumption