My opinion is that Bitcoin miners are using excess power. The reason most are allocated in China is the low cost and infrastructure in hydroelectric power.
Coal power plants have been in use in some locations to power bitcoin miners but not on a massive scale.
Most of Bitcoin mining uses efficient green energy. Our planet is not polluted by Bitcoin, and there is no estimation that Bitcoin mining will ever affect anything.
There are so many industries that have a destructive influence on the environment, not to mention the nuclear weapon and the radioactive isotopes released since 1950.
Bitcoin is the least of our worries when it comes to the environment.
I didn't read anything to suggest most of Bitcoin mining comes from green efficient energy sources. I'll look it up later.
1st rule of Fight Club,
You don't talk about Fight Club
1st rule of Bitcoin
You don't talk about it's Carbon Foot Print
Reason being if you did, you have to admit that exploring a change to a different energy efficient algorithm is the only real solution to the carbon footprint of bitcoin reliance on PoW. And that is something Bitcoiners don't want to discuss.
Until the Governments begin shutting down the miners for excessive energy waste, they will not accept it as a problem.
We are getting there however.
https://www.c[Suspicious link removed]m/2021/03/02/china-bitcoin-mining-hub-to-shut-down-cryptocurrency-projects.html
China’s Inner Mongolia region plans to ban new cryptocurrency mining projects and shut down existing activity in a bid to cut down on the energy-consuming operation.
Bitcoin mining consumes an estimated 128.84 terrawatt-hour per year of energy, more than entire countries such as Ukraine and Argentina.
Inner Mongolia alone accounts for around 8% of all bitcoin mining globally, more than the United States which accounts for 7.2%.
The numbers of places banning cryptocurrency mining is going to increase year on year. Maybe it'll have something to do with concentrating mining to specific places for strategic purposes.
Yes, there is an excessive use of electricity. But today it is very inefficient to generate electricity using fossil fuels. More wind energy, dams or nuclear energy is used. This is not the type of energy that causes carbon footprint.
I've read about a country in Asia building hydroelectric-powered mining farms. State owned cryptocurrency mining with green power is interesting but building them isn't going to be easy it'll take years.