The Cambridge Centre for Alternative Finance has released a substantive revision of its Bitcoin Electricity Consumption Index, reducing its initial estimates concerning the energy demands of the cryptocurrency. The research institution acknowledged that its prior computational model, which has been employed since 2019, exaggerated the energy consumption levels significantly.

The earlier methodology functioned adequately during times of modest mining profitability but showed deficiencies when profitability soared, notably in the year 2021. The initial approach involved giving equal weight to all operational mining machines, regardless of their efficiency. This resulted in a skewed representation, particularly of outdated and less efficient machinery during periods of high profitability.

The report revealed that due to space constraints in data centers, even next-generation hardware was relegated to storage in warehouses. It is therefore plausible to conclude that mining operators have likely phased out older machinery in favor of newer, more efficient systems in a bid to maximize the effectiveness of their mining activities.

To address this issue, the Cambridge Centre has introduced a weighting factor into its calculation methodology, designed to better represent the relative influence of new, highly efficient mining rigs on Bitcoin’s total computational power and energy consumption. Additionally, the institution has instituted a two-month time lag to account for the deployment of newly released equipment.

This modification has resulted in a 15 TWh reduction in the centre’s 2021 energy consumption estimate for Bitcoin, decreasing it from 104 TWh to 89 TWh. Likewise, the estimated energy consumption for 2022 has been adjusted downwards by 9.8 TWh, from an initial figure of 105.3 TWh to 95.5 TWh.

The report emphasizes the centre’s commitment to continually refine their estimates, stating, “We hold a high level of confidence in our revised figures and view each update as a methodical advancement toward enhancing their accuracy. In the interest of transparency, which is integral to our work, we will provide a comprehensive breakdown of how this update affects past estimations.”

While the updated index offers a more precise approximation of Bitcoin’s actual energy usage, the Cambridge Centre acknowledges that the figures are still only an approximation, given the decentralized structure of the Bitcoin network. The report also suggests that future improvements to the methodology are warranted, as are further evaluations concerning the environmental impact of Bitcoin mining and potential strategies for its mitigation.

What is your perspective on Cambridge Centre’s modification of its Bitcoin electricity consumption index? Please share your insights and viewpoints on this topic in the comments section below.

Frequently Asked Questions (FAQs) about Bitcoin Electricity Consumption Index

What organization has revised its Bitcoin Electricity Consumption Index?

The Cambridge Centre for Alternative Finance is the organization that has revised its Bitcoin Electricity Consumption Index.

Why was the Bitcoin Electricity Consumption Index revised?

The index was revised because the previous methodology exaggerated the energy consumption levels of Bitcoin, particularly during periods of high mining profitability.

What were the shortcomings of the previous methodology?

The previous methodology gave equal weight to all operational mining machines, which led to an overrepresentation of older, less efficient models during times of high profitability.

How has the revised methodology improved the accuracy of the estimates?

The revised methodology has integrated a weighting factor to better account for the efficiency and computational power of newer mining rigs. Additionally, a two-month time lag has been introduced for the deployment of new equipment.

By how much has the estimated electricity consumption for Bitcoin in 2021 been reduced?

The estimated electricity consumption for Bitcoin in 2021 has been reduced by 15 TWh, going from 104 TWh to 89 TWh.

What about the estimated electricity consumption for Bitcoin in 2022?

The estimated electricity consumption for Bitcoin in 2022 has been reduced by 9.8 TWh, going from 105.3 TWh to 95.5 TWh.

Does the revised index provide an exact figure for Bitcoin’s electricity consumption?

No, the revised index provides only an approximation of Bitcoin’s actual electricity consumption, due to the decentralized nature of the cryptocurrency’s network.

Are further revisions to the methodology expected?

Yes, the report indicates that additional enhancements to the methodology are needed, including greater consideration of the environmental impact of Bitcoin mining and potential mitigation strategies.

More about Bitcoin Electricity Consumption Index

  • Cambridge Centre for Alternative Finance Official Report
  • Overview of Bitcoin Mining and Energy Consumption
  • Study on Cryptocurrency Mining Efficiency
  • Environmental Impact of Cryptocurrency Mining
  • Methodologies for Estimating Cryptocurrency Energy Use


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MoneyMind September 2, 2023 - 9:32 am

Anyone else thinking about how this would impact the price of Bitcoin? lower energy costs could mean higher profits for miners.

TechGuru September 2, 2023 - 9:47 am

Incorporating a weighting factor makes sense. Older rigs were definitely skewing the data, glad they caught on.

CryptoQueen September 2, 2023 - 1:26 pm

good to see revisions but still, the whole topic of BTC energy use is super controversial. Are these numbers even close to the real thing?

GreenThinker September 2, 2023 - 3:21 pm

its interesting but what about the climate risks? They’ve revised the numbers but we’re still talkin bout a lot of energy here.

EcoWarrior01 September 2, 2023 - 7:35 pm

Updates are great and all, but we still need to focus on making crypto more sustainable. I mean, 95.5 TWh for 2022 ain’t a small number.

MarketWatch2023 September 2, 2023 - 9:02 pm

The revisions could have implications on regulatory approaches, right? Like if energy use is less than thought, it might ease some tensions.

JohnDoe42 September 3, 2023 - 12:05 am

Wow, finally someone corrected those crazy high estimates. About time, Cambridge.


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