Bitcoin consumes 'more electricity than Argentina'

Bitcoin consumes 'more electricity than Argentina'

Bitcoin uses more electricity annually than the whole of Argentina, analysis by Cambridge University suggests.

“Mining” for the cryptocurrency is power-hungry, involving heavy computer calculations to verify transactions.

Cambridge researchers say it consumes around 121.36 terawatt-hours (TWh) a year – and is unlikely to fall unless the value of the currency slumps.

Critics say electric-car firm Tesla’s decision to invest heavily in Bitcoin undermines its environmental image.

The currency’s value hit a record $48,000 (£34,820) this week. following Tesla’s announcement that it had bought about $1.5bn bitcoin and planned to accept it as payment in future.

But the rising price offers even more incentive to Bitcoin miners to run more and more machines.

And as the price increases, so does the energy consumption, according to Michel Rauchs, researcher at The Cambridge Centre for Alternative Finance, who co-created the online tool that generates these estimates.

“It is really by design that Bitcoin consumes that much electricity,” Mr Rauchs told BBC’s Tech Tent podcast. “This is not something that will change in the future unless the Bitcoin price is going to significantly go down.”

The online tool has ranked Bitcoin’s electricity consumption above Argentina (121 TWh), the Netherlands (108.8 TWh) and the United Arab Emirates (113.20 TWh) – and it is gradually creeping up on Norway (122.20 TWh).

The energy it uses could power all kettles used in the UK for 27 years, it said.

However, it also suggests the amount of electricity consumed every year by always-on but inactive home devices in the US alone could power the entire Bitcoin network for a year.

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