$BTC
Bitcoin mining's environmental impact is controversial and has attracted the attention of regulators, leading to restrictions or incentives in various jurisdictions. As of 2022, a non-peer-reviewed study by the Cambridge Centre for Alternative Finance (CCAF) estimated that bitcoin mining represented 0.4% of global electricity consumption. Another 2022 non-peer-reviewed commentary published in Joule estimated that bitcoin mining was responsible for 0.2% of world greenhouse gas emissions. About half of the electricity used is generated through fossil fuels.Moreover, mining hardware's short lifespan results in electronic waste.The amount of electrical energy consumed, and the e-waste generated, is comparable to that of Greece and the Netherlands, respectively.