According to news on December 29, according to data from Woocharts, the proportion of clean or sustainable energy used in mining is currently 56.76%. Since April 2021, BTC clean energy usage has been growing steadily. The platform uses the Cambridge Center for Alternative Finance’s definition of sustainability in its calculations to measure its clean energy use, with the metric based on the share of crypto mining operations that come from sources such as wind, solar, hydro and even nuclear power.