RE: Buy crypto miner instead10 Dec 2023 11:13
global bitcoin mining is highly dependent on fossil fuels, with worrying impacts on water and land in addition to a significant carbon footprint.
according to study results, published by the united nations university and earth’s future journal, during the 2020–2021 period, the global bitcoin mining network consumed 173.42 terawatt hours of electricity. this means that if bitcoin were a country, its energy consumption would have ranked 27th in the world, ahead of a country like ****stan, with a population of over 230 million people. the resulting carbon footprint was equivalent to that of burning 84 billion pounds of coal or operating 190 natural gas-fired power plants. to offset this footprint, 3.9 billion trees should be planted, covering an area almost equal to the area of the netherlands, switzerland, or denmark or 7% of the amazon rainforest.
during this time period, bitcoin's water footprint was similar to the amount of water required to fill over 660,000 olympic-sized swimming pools, enough to meet the current domestic water needs of more than 300 million people in rural sub-saharan africa. the land footprint of worldwide bitcoin mining activities during this period was 1.4 times the area of los angeles.
the un scientists report that bitcoin mining heavily relies on fossil energy sources, with coal accounting for 45% of bitcoin's energy supply mix, followed by natural gas (21%). hydropower, a renewable energy source with significant water and environmental impacts, is the most important renewable source of energy of the bitcoin mining network, satisfying 16% of its electricity demand. nuclear energy has a considerable share of 9% in bitcoin’s energy supply mix, whereas renewables such as solar and wind only provide 2% and 5% of the total electricity used by bitcoin.
china, by a large margin, has been the biggest bitcoin mining nation. to offset the carbon emissions from china's coal-intensive bitcoin mining operations in 2021–2022, about 2 billion trees should be planted, covering an area equivalent to the sum of portugal and ireland or 45,000 times the area of central park in new york city. aside from china, the world’s top 10 bitcoin mining nations in 2020–2021 included the united states, kazakhstan, russia, malaysia, canada, germany, iran, ireland, and singapore.
https://unu.edu/press-release/un-study-reveals-hidden-environmental-impacts-bitcoin-carbon-not-only-harmful-product