Is Bitcoin Mining Contributing to Climate Change?

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Discussion Overview

The discussion centers around the environmental impact of Bitcoin mining, particularly its contribution to climate change. Participants explore the implications of energy consumption associated with mining, the economic factors influencing its expansion, and the feasibility of Bitcoin's widespread adoption in light of these concerns.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Some participants note that Bitcoin mining typically occurs in regions with low electricity costs, which can lead to competition for power and potentially increase electricity prices.
  • There are claims that the profitability of mining is threatened by the need for new power plants and the potential for more efficient computing hardware to be developed.
  • One participant argues that the study referenced may overstate the feasibility of Bitcoin's widespread adoption based on its energy consumption models.
  • Concerns are raised about the difficulty in accurately measuring the energy used by Bitcoin mining due to its distributed and often secretive nature.
  • It is mentioned that the Bitcoin reward is halved approximately every four years, which could reduce profitability and slow mining activity unless Bitcoin's value increases significantly.
  • Participants highlight that Bitcoin transactions consume a substantial amount of energy, comparing it to the energy used by small countries, and point out that miners often seek the cheapest electricity, which may come from coal-fired plants.
  • One participant references the latest IPCC report, emphasizing the urgent need to reduce fossil fuel use to combat climate change, suggesting that Bitcoin mining contradicts these goals.

Areas of Agreement / Disagreement

Participants express a range of views on the implications of Bitcoin mining for climate change, with no consensus reached on its overall impact or the feasibility of its expansion in light of environmental concerns.

Contextual Notes

Participants acknowledge the complexity of measuring energy consumption and the influence of economic factors on mining profitability, indicating that assumptions about future Bitcoin value and energy use are critical to the discussion.

Computer science news on Phys.org
The bitcoin mining usually takes place in areas of cheap electricity rates because they use so much power. Mining competes with other users of electricity This competition for power will raise the price of electricity and the cost of mining.reducing profit margins. New plants will be required. At least in the near term there seems to be factors that will decrease the rate of expansion of this technology unless more efficient computing hardware are invented.
 
I think the article is a silly extrapolation that tells us something different from what the article is about: it tells us the widespread adoption of Bitcoin at the rates the authors modeled isn't feasible.
 
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Yes the study has problems for one it is hard to know for sure how much energy is being used since mining is widely distributed and often secretive. But there are factors for both increased and decreased bitcoin expansion. One factor that regulates the amount of energy that bitcoin mining will use is that about every four years the bitcoin reward is cut in half making it less profitable to mine the next cut being 2020. So by 2030 at current bitcoin value the reward for mining is 1/8 of what it is today making the profit margin smaller. So unless the bitcoin value increase significantly mining will slow. As time goes on it takes longer to mine a bitcoin driving up the energy per transaction. Currently it is about 770 kwhrs/transactioin compared to about 1.70 whr/ transactions for one Visa transaction. Already it is estimated that bitcoin transactions use as much power as some small countries like Poland. Bitcoin miners will go to wherever the electricity is cheapest which often is where the power plants are coal fired exacerbating the problem.

Clearly this is not what the world needs at this time. The latest IPCC report say that we must reduce the fossil fuel use by 45% by 2030 to keep global warming under control. That means reducing fossil fuel use by about 4.5% per year starting immediately and hat ain't gong to happen.
 
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