We release here a live counter (updated daily) of the annualized estimated carbon footprint of Bitcoin mining :

After all time highs in February 2021 (90 millions tons CO2-eq / year), China’s ban was very efficient by cutting the hashrate and footprint of Bitcoin by half, showing in the…

Proof of work (PoW) crypto-currencies like Bitcoin are physically non sustainable.

The Bitcoin network currently consumes more electricity than Argentina (130 tWh / year), for 400 000 transactions per day. This is ridiculous : it represents only 0.02% of the global daily digital payment transactions (about 2 billions / day).

Bitcoin is the worst waste of resources and energy in human history. It is solely used for financial speculation, with no genuine utility. …

Most wallets and transactions are handled off-chain by the cartel of exchange platforms. In practice, Bitcoin is more centralized than the banking system.

100M+ users fitting in 31 millions wallets ?

In order to assess the (insane) consumption and footprint of Bitcoin per active user, we looked into the blockchain and found only 31 millions wallets with positive…

Looking at the blockchain, we find only 8.2 millions active users in the past year. This allows to compare the environmental footprint of Bitcoin with other activities, per active user.

Bitcoin is incredibly wasteful and polluting

Nobody denies anymore the incredible power consumption and environmental footprint of Bitcoin.

We know it compares to the consumption entire…

The data of "coinshares" have proven to be wrong with the recent drop of 25% of hash rate caused by a global black-out in the province of Xijiang : a province of china running mostly (80%) on coal :


The data from the University of Cambridge is much more accurate and detailed : https://cbeci.org/mining_map

Based on this data of shares per region, and on a database of life cycle assessment (ecoinvent) I show that the average carbon footprint of bitcoin mining is 830g CO2 / kWh : way worse than the US mix :


With the current consumption ( 140 TWh / year), this sums to over 115 Mt CO2 / year : more than the carbon footprint of whole Belgium !

At 50k, Bitcoin will soon consume more electricity than Australia with higher carbon footprint than whole Belgium.

At 1M$, it would consume 20% of all world electricity and top the carbonn footprint of all EU.

This thing is a fucking cancer ! This is insane. You guys are criminals.

I see you refer to CBECI, and then continue with general talking and twisted logic to conclude that on average, Bitcoin mining might use more renewables than US.

Data proves you wrong : by crossing the shares of mining per region provided CBECI with the Ecoinvent database (DB of lifecycle footprint) we find that the Bitcoin mix is 830g CO2 / kWh on average : way worse than the average USA mix (530g per ecoinvent).

Bitcoin is mostly powered by fossils.

See :

@Nic Carter : Why did you delete this comment ?

Developing renewable energies to replace fossil fuels is a good thing. Developing them to increase the global consumption, especially for frivolous and inefficient usages, is not.

Bitcoin’s energy usage skyrockets along with its price, burning currently around 130 TWh / year (as much as Argentina) and is expected to double…

By crunching the data, we find that the average carbon footprint of electricity used for bitcoin mining is 830g CO2 / kWh : Worse than the average US mix (530g CO2 / kWh). We should rise up against this madness.

As Bitcoin’s energy usage skyrockets along with its price, the…

Franck Leroy

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