The cryptocurrency Ethereum has the potential to significantly reduce its energy consumption and ensuing climate-related pollution with a complex software change. However, the phase known as “the merger” is not sufficient to solve the problem. The energy-intensive “mining” process has been effectively eliminated in Ethereum, the second most valuable cryptocurrency after bitcoin. Thanks to the change implemented late on its blockchain, new coins. Massive energy consumption and, in many cases, higher greenhouse gas emissions at older power plants are caused by mining’s high computing power requirements. However, even though it is anticipated to significantly lessen the expected environmental impact of crypto, the Ethereum change won’t completely eliminate it. The proponents of bitcoin have not yet demonstrated much interest in eliminating mining.