Bitcoin’s demand for electricity has led to huge carbon emissions, but a slump in the cryptocurrency’s price and rising energy costs have slowed its energy use, at least temporarily

Technology 28 September 2022

The large energy requirements of bitcoin and several other cryptocurrencies have a big environmental impact


Bitcoin miners have emitted almost 200 million tonnes of carbon dioxide in the cryptocurrency’s short history, researchers at the University of Cambridge have calculated. Their estimate for the 13 years since bitcoin launched exceeds the emissions of the whole country of Colombia during 2018.

The university set up the Cambridge Bitcoin Electricity Consumption Index (CBECI) in 2019 to provide hard data on bitcoin that would allow people to properly assess its environmental and economic impacts. …