Finance & economics | The dirty truth

Totting up bitcoin’s environmental costs

Without regulation, mining in China could consume as much energy as Italy by 2024

AS COINBASE’S IPO shows, cryptocurrencies have many fans. But they have detractors, too. Environmentalists, in particular, fret about how much energy bitcoin uses. In a paper in Nature Communications, a group of academics led by Dabo Guan of Tsinghua University and Shouyang Wang at the Chinese Academy of Sciences examine bitcoin’s energy use in China. They conclude that, in the absence of legal curbs, bitcoin could by 2024 become a “non-negligible” barrier to China’s efforts to decarbonise its economy.

This article appeared in the Finance & economics section of the print edition under the headline “The dirty truth”

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