Bitcoin’s (BTC) energy needs have been the top concern for the crypto industry. During mining, its high consumption has a negative impact on the environment. This issue could prompt the government to ban BTC mining if no solution is preferred.
Data shows that Bitcoin consumes nearly 150 tetrawatt hours of electricity annually, which is more than the energy consumption of some countries. Carbon dioxide emissions from this power generation are about 65 megatons annually.
The statistical data has made Bitcoin one of the most significant contributors to global pollution. However, despite the growing concerns, energy consumption in the crypto mining industry continues to rise.
Mining companies had to look for greener energy sources or build more plants to generate additional energy.
China crypto mining ban impacted BTC energy consumption
Natural gas and nuclear energy are gradually becoming the most used energy source for bitcoin mining. As a result, the Cambridge Center for Alternative Finance (CCAF) updated its Cambridge Bitcoin Mining Electricity Consumption Index (CBECI) on Tuesday.
Data shows that fossil fuels like natural gas and coal make up over 62% of the Bitcoin power mix as of January 2022. Other energy sources in the Bitcoin power mix account for 38% of the total energy mix.
The study further found that coal accounted for about 37%, while hydropower accounted for 15%. This suggests that coal is the main energy source for BTC mining, followed by hydropower in January 2022.
Still, BTC mining’s reliance on coal and hydroelectric power has decreased over the years. In 2020, coal power accounted for 40% and hydroelectric power for 34%.
Unlike coal, natural gas, and nuclear power, bitcoin mining consumption has increased significantly over the past two years. For example, natural gas consumption increased from 13% in 2020 to 23% in 2021, while the share of nuclear energy increased from 4% in 2021 to 9% in 2022.
Cambridge analysts reported that Chinese miners are behind the instability in the BTC energy consumption mix in 2020 and 2021. The Chinese government shut down many hydropower mining companies in 2021, leading to a decline in hydropower’s contribution to BTC mining.
The shift of mining power to the United States
The Cambridge study reported that China’s crypto mining ban caused miners to migrate to other countries, increasing BTC’s environmental footprint.
The Cambridge analysts stated that the BTC mining power mix differs from country to country. Some countries are embracing sustainable energy while others are embracing fossil fuels. For example, sustainable energy contributes to about 98% of Sweden’s electricity generation, while Kazakhstan uses fossil fuels.
The analyst claimed that the increase in nuclear and natural gas energy consumption in BTC mining is reflected in the shift of mining energy to the US. Natural gas accounts for 38% of US electricity. In comparison, nuclear power accounts for 19%.
Bitcoin is on the verge of falling below $19,000 l BTCUSDT on Tradingview.com
The latest update of the CBECI shows that BTC mining was responsible for greenhouse gas (GHG) emissions of 48 million tons of carbon dioxide in 2022. That figure is 14% lower than 2021 greenhouse gas emissions estimates. According to the study, only BTC mining contributes about 0.1% of global greenhouse gas emissions.
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