Internet shutdown in Kazakhstan reveals that 12–18% of all Bitcoin mining is done there, which has alarming energy implications
Fuel shortages and spiking electricity costs in Kazakhstan have contributed to protests and a governmental crisis in the country. The electricity issue is partially thanks to cryptocurrency mining to begin with, with about 8% of electricity generation in the country going towards crypto mining (as of last year — it's likely to be higher now). During the crisis, the Kazakh president ordered the nation's largest telecom provider to shut down Internet service in the country to try to quash communications among his opponents. On doing so, the total amount of Bitcoin mining taking place in the country was revealed: at least 12% of Bitcoin's computational power disappeared, though the numbers could swell closer to 18%. This has extremely concerning implications as far as Bitcoin's environmental impact (which we already knew was bad): Kazakhstan's electricity generation relies heavily on "hard" coal being burned in old and inefficient power plants, producing comparably enormous amounts of CO₂.