2024

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Big Tech’s carbon footprint continues to balloon as generative artificial intelligence products and services proliferate, with Amazon alone producing more carbon dioxide emissions per year than all the Bitcoin mining in the world.&nbsp;
According to the data, Big Tech has released more carbon dioxide into the atmosphere since 2019 — when most of the largest U.S. tech firms began disclosing their emissions — than Bitcoin has since 2014. 
<h2 id="bitcoin-s-carbon-footprint">Bitcoin’s carbon footprint</h2>
It’s virtually impossible to calculate the exact amount of carbon dioxide produced by Bitcoin operations throughout the globe. To the best of our knowledge, no research team has access to power grid usage and cost data from all the countries involved in Bitcoin mining. 
That being said, researchers have shown that cost estimates compared to actual mining activity can lead to feasible estimates. 
An oft-quoted study <a href="https://unu.edu/press-release/un-study-reveals-hidden-environmental-impacts-bitcoin-carbon-not-only-harmful-product" target="_blank" rel="noopener nofollow">conducted</a> by the United Nations University found that “the global Bitcoin mining network consumed 173.42 Terawatt hours of electricity” between 2020 and 2021. 
Were Bitcoin a country, the researchers concluded, its energy use would be greater than that of Pakistan, a nation with 220 million citizens. 
A separate study <a href="https://www.sciencedirect.com/science/article/pii/S2542435122000861" target="_blank" rel="noopener nofollow">estimated</a> that Bitcoin mining “may be responsible for 65.4 megatonnes of CO2 (MtCO2) per year” as of around 2022. According to the researchers, this puts the Bitcoin network’s carbon footprint around the same size as the entire country of Greece. 
Critics have used these numbers to argue that Bitcoin’s value prospect isn’t high enough to offset the potential damage to our climate through carbon emissions. But what if we compare these numbers against companies instead of countries?
<h2 id="big-tech-s-carbon-footprint">Big Tech’s carbon footprint</h2>
Right off the bat, we can eclipse Bitcoin’s estimated annual impact with Amazon’s reported carbon footprint. Amazon self-reported that it <a href="https://www.theverge.com/2022/8/1/23287351/amazon-climate-change-carbon-emissions-worse-2021" target="_blank" rel="noopener nofollow">generated</a> 71.54 million metric tons of carbon dioxide in 2021. Compared to Bitcoin’s estimated 65.4 million metric tons, Amazon is clearly the bigger offender. 
If Google, which self-reported <a href="https://sustainability.google/reports/google-2024-environmental-report/" target="_blank" rel="noopener nofollow">producing</a> 14.3 million tons of carbon emissions in 2023, and Microsoft, with 15.3 million tons <a href="https://www.theverge.com/2024/5/15/24157496/microsoft-ai-carbon-footprint-greenhouse-gas-emissions-grow-climate-pledge" target="_blank" rel="noopener nofollow">emitted</a> in 2023, are added, the total exceeds the 100-million-tons-per-year mark. This calculation does not account for Amazon’s growth from 2021 through 2024 or <a href="https://www.statista.com/statistics/528604/carbon-emissions-from-apple-by-segment/" target="_blank" rel="noopener nofollow">include</a> Apple’s 15.6 million tons.
While a direct comparison between a company's reported carbon emissions and Bitcoin's estimated emissions is not entirely scientific, it is evident that Big Tech's footprint is significantly larger than Bitcoin's. 
Assuming data centers for AI, Bitcoin and cloud computing are generally equivalent in their power demands and carbon emissions, the data indicates that Big Tech companies in the U.S. have emitted more carbon emissions since 2019 than all global Bitcoin mining operations have during the cryptocurrency’s entire existence.
Related: <a href="https://cointelegraph.com/news/marathon-digital-holds-bitcoin-june">World’s largest Bitcoin miner didn’t sell any BTC in June</a>

Big Tech produced more carbon since 2019 than all Bitcoin mining ever

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