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Bitcoin mining struggles to go green, research shows

By Tom Wilson LONDON (Reuters) - Bitcoin is struggling to go green, with the cryptocurrency making only slim gains in its usage of sustainable energy in the year to January,...
Bitcoin mining struggles to go green, research shows © Reuters. FILE PHOTO: A representation of the virtual cryptocurrency Bitcoin is seen in this picture illustration taken October 18, 2021. REUTERS/Edgar Su
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By Tom Wilson

LONDON (Reuters) - Bitcoin is struggling to go green, with the cryptocurrency making only slim gains in its usage of sustainable energy in the year to January, research by Cambridge university showed on Tuesday.

Processing bitcoin transactions and "mining" new tokens is done by powerful computers, hooked up to a global network, that compete against others to solve complex mathematical puzzles.

The process guzzles electricity, with its heavy reliance on polluting fossil fuels such as coal drawing criticism from policymakers, investors and environmentalists who worry over its impact on global warming.

Projects have sought ways to shift bitcoin mining towards cleaner energy, such as repurposing heat byproducts from oil extraction for crypto mining.

Yet fossil fuels made up some 62% of bitcoin's energy mix in January 2022, the latest data available, versus 65% a year earlier, the research by the Cambridge Bitcoin Electricity Consumption Index (CBECI) showed.

While the level of coal fell to 37% from 47%, bitcoin became more reliant on gas, which in January accounted for a quarter of its energy mix versus 16% a year earlier.

The role of sustainable power - classed as nuclear, hydro, wind and solar - in the mix barely rose, hitting about 38% from 35% a year earlier. Hydro dropped to 15% from around 20%.

Bitcoin mining is mostly unregulated and opaque, with few centralised bodies gathering data. The Cambridge study was based on data on the geographical spread of mining across the world and the energy mix of individual countries.

The report said its findings "noticeably deviate" from estimates by the U.S.-based Bitcoin Mining Council industry body that in July put the share of sustainable energy in bitcoin's power mix at about 60%.

"We are trying to show what bitcoin's footprint is," said CBECI lead Alexander Neumueller. "The energy mix really has a strong impact on greenhouse gas emissions."

Bitcoin's greenhouse gas emissions are set to hit 48.4 million tonnes of carbon dioxide equivalent this year, some 14% lower than the estimated emissions for 2021, CBECI said.

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01-05-2024 10:45:17 (UTC+7)

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    EUR/USD 1.0658 ↑ Sell  
    GBP/USD 1.2475 ↑ Sell  
    USD/JPY 157.91 ↑ Buy  
    AUD/USD 0.6469 Neutral  
    USD/CAD 1.3780 ↑ Buy  
    EUR/JPY 168.32 ↑ Buy  
    EUR/CHF 0.9808 Neutral  
    Gold 2,295.80 ↑ Sell  
    Silver 26.677 ↑ Sell  
    Copper 4.5305 ↑ Buy  
    Crude Oil WTI 81.14 ↑ Sell  
    Brent Oil 85.62 ↑ Sell  
    Natural Gas 1.946 ↑ Sell  
    US Coffee C 213.73 ↑ Sell  
    Euro Stoxx 50 4,920.55 ↑ Sell  
    S&P 500 5,035.69 ↑ Sell  
    DAX 17,921.95 ↑ Sell  
    FTSE 100 8,144.13 Sell  
    Hang Seng 17,763.03 ↑ Sell  
    Small Cap 2000 1,973.05 ↑ Sell  
    IBEX 35 10,854.40 Neutral  
    BASF 49.155 ↑ Sell  
    Bayer 27.35 ↑ Sell  
    Allianz 266.60 ↑ Sell  
    Adidas 226.40 ↑ Sell  
    Lufthansa 6.714 Neutral  
    Siemens AG 175.90 ↑ Sell  
    Deutsche Bank AG 15.010 Neutral  
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