[Bitcoin's Annual Energy Consumption Reaches 138 TWh, 52.4% of Energy Comes from Sustainable Sources] According to the *Cambridge Digital Mining Industry Report 2025*, Bitcoin mining's annual electricity consumption has reached 138 TWh, accounting for 0.54% of global electricity usage, a 17% increase compared to last year. Despite improvements in mining hardware efficiency, overall energy consumption continues to rise. The report highlights that currently, 52.4% of Bitcoin mining energy comes from renewable sources and nuclear energy, among other sustainable sources. In contrast, Ethereum transitioned to the Proof of Stake (PoS) mechanism following the "Merge" upgrade in September 2022, reducing its energy consumption by approximately 99.9%. Experts note that the environmental impact of Bitcoin mining is not limited to electricity consumption but also involves carbon emissions, water resource usage, land utilization, and electronic waste. Governments are increasingly focusing on the types of energy used in mining and its environmental impact.