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The stock market is more harmful to the climate than Bitcoin

 


A new study sheds light on the carbon footprint of investing in Bitcoin compared to investing in the SP500. How green is bitcoin really?


It is such a thing with the carbon footprint of Bitcoin. While the power consumption of the world's largest decentralized network can be determined quite easily, estimates of CO₂ emissions are far worse. After all, mining is a decentralized organized process. Depending on where the mines are located, the companies use different energy sources for hashing. In addition, the miners do not like to be looked at; it is therefore not known exactly whether the majority of the electricity used to secure the network comes from renewable or fossil energy sources.


Put in numbers, according to data from the Cambridge Bitcoin Electricity Consumption Index , Bitcoin consumes 127.98 TH/W of electricity. This statistic results from actually publicly accessible data such as the mining difficulty, the hash rate and the common mining devices and their energy efficiency.


CO₂ balance is a mystery

The situation is different with the CO₂ balance; here you have to rely on estimates from science. The scientists Krause and Tolaymat (2018) come to the conclusion that Bitcoin only emits 1.2 to 5.2 megatons of CO₂ per year. At the other end of the spectrum sits the estimate by Jiang et. al (2021) , which has CO₂ emissions of a whopping 130.50 Mt per year.



However, and this is crucial, these figures have so far only been treated in absolute terms in the literature and have not been set in relation to Bitcoin's market capitalization. The measurement of the so-called carbon intensity is actually standard when evaluating the ecological footprint of assets. For comparison: companies that are summarized in the world's most important stock index, the S&P500, emit 3,000 Mt CO₂, many times that of Bitcoin - but also have about fifty times the market capitalization.


Bitcoin can improve the portfolio's carbon footprint

In a paper published in November last year, the authors Dirk Baur from the University of Western Australia and Josua Oll from the University of Oldenburg do just that: They compare Bitcoin CO2 emissions to its market value. And what's more: In the paper, the authors compare the climate impact of a USD 10,000 bitcoin investment with that of an equivalent share investment. Lo and behold: Depending on the CO₂ estimate, adding Bitcoin can even reduce your own CO₂ footprint.



This is evident from the spreadsheet below.


In all fields with a green background, adding Bitcoin to the portfolio reduces the ecological footprint. The values ​​in the orange part of the table represent an increase in CO₂ emissions through bitcoin diversification – depending on how much CO₂ bitcoin actually emits.


"The table says that according to this data, investing money in Bitcoin has only 50-60 percent of the climate impact of investing in the S&P500," writes Stefan Richter, the brains behind Netpositive.money , an initiative that advocates for a fact-based dealing with Bitcoin's energy problem.


Stock index more harmful than bitcoin


The study makes an important contribution to the climate debate surrounding Bitcoin, as it compares Bitcoin's market capitalization to CO₂ emissions for the first time. It also shows that traditional investment strategies often do more damage than BTC investments.

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