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Unlike fiat currency like the U.S. dollar – as the Federal Reserve can simply decide to print more banknotes – Bitcoin’s supply is finite: BTC has a maximum supply embedded in its design, of which roughly 89 percent had been reached in April 2021. It is believed that Bitcoin will run out by 2040, despite more powerful mining equipment. This is because mining becomes exponentially more difficult and power-hungry every four years, a part of Bitcoin’s original design. Because of this, a Bitcoin mining transaction could equal the energy consumption of a small country in 2021.
I found these topics in an article, I hope the opinion of experts in this regard.