Since 2019, large tech companies have generated more carbon emissions than the total emissions from bitcoin mining. Amazon emits more carbon dioxide per year than the global mining of one bitcoin. In 2021, Amazon reported emitting 71.54 million tons of carbon dioxide, while the annual emissions from bitcoin mining are estimated at 65.40 million tons. Other large tech companies such as Google and Microsoft have annual emissions of 14.30 million tons and 15.30 million tons, respectively, making the total emissions of these companies far more than bitcoin. The data shows that since 2019, the carbon emissions of large U.S. tech companies have exceeded the total emissions of bitcoin mining worldwide since 2014.