Bitcoin’s Carbon Footprint Revisited: Proof of Work Mining for Renewable Energy Expansion

While blockchain and distributed ledger technology offer immense potential for applications in transparency, security, efficiency, censorship resistance, and more, they have been criticized due to the energy-intensive nature of the proof of work consensus algorithm, particularly in the context of Bi...

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Main Authors: Juan Ignacio Ibañez, Alexander Freier
Format: Article
Language:English
Published: MDPI AG 2023-08-01
Series:Challenges
Subjects:
Online Access:https://www.mdpi.com/2078-1547/14/3/35
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author Juan Ignacio Ibañez
Alexander Freier
author_facet Juan Ignacio Ibañez
Alexander Freier
author_sort Juan Ignacio Ibañez
collection DOAJ
description While blockchain and distributed ledger technology offer immense potential for applications in transparency, security, efficiency, censorship resistance, and more, they have been criticized due to the energy-intensive nature of the proof of work consensus algorithm, particularly in the context of Bitcoin mining. We systematically explore the state-of-the-art regarding the relationship between Bitcoin mining and grid decarbonization. We specifically focus on the role of flexible load response through proof of work mining as a potential contributor to renewable energy penetration and net decarbonization of the energy grid. The existing literature has not comprehensively examined this area, leading to conflicting views. We address the gap, analyzing the capabilities and limitations of Bitcoin mining in providing flexible load response services. Our findings show that renewable-based mining could potentially drive a net-decarbonizing effect on energy grids, although key adaptations in mining practices are needed to fully realize this potential. Overall, the paper suggests a re-evaluation of the environmental impact of Bitcoin mining, highlighting its potential role as a facilitator for renewable energy expansion, and decarbonization more broadly.
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spelling doaj.art-43a934fa812d4bbdbbe9f83944ed2fdb2023-11-19T10:01:09ZengMDPI AGChallenges2078-15472023-08-011433510.3390/challe14030035Bitcoin’s Carbon Footprint Revisited: Proof of Work Mining for Renewable Energy ExpansionJuan Ignacio Ibañez0Alexander Freier1UCL Centre for Blockchain Technologies, University College London, London WC1E 6BT, UKUCL Centre for Blockchain Technologies, University College London, London WC1E 6BT, UKWhile blockchain and distributed ledger technology offer immense potential for applications in transparency, security, efficiency, censorship resistance, and more, they have been criticized due to the energy-intensive nature of the proof of work consensus algorithm, particularly in the context of Bitcoin mining. We systematically explore the state-of-the-art regarding the relationship between Bitcoin mining and grid decarbonization. We specifically focus on the role of flexible load response through proof of work mining as a potential contributor to renewable energy penetration and net decarbonization of the energy grid. The existing literature has not comprehensively examined this area, leading to conflicting views. We address the gap, analyzing the capabilities and limitations of Bitcoin mining in providing flexible load response services. Our findings show that renewable-based mining could potentially drive a net-decarbonizing effect on energy grids, although key adaptations in mining practices are needed to fully realize this potential. Overall, the paper suggests a re-evaluation of the environmental impact of Bitcoin mining, highlighting its potential role as a facilitator for renewable energy expansion, and decarbonization more broadly.https://www.mdpi.com/2078-1547/14/3/35blockchainenvironmental impactdecarbonizationancillary servicesflexible load responsesustainability
spellingShingle Juan Ignacio Ibañez
Alexander Freier
Bitcoin’s Carbon Footprint Revisited: Proof of Work Mining for Renewable Energy Expansion
Challenges
blockchain
environmental impact
decarbonization
ancillary services
flexible load response
sustainability
title Bitcoin’s Carbon Footprint Revisited: Proof of Work Mining for Renewable Energy Expansion
title_full Bitcoin’s Carbon Footprint Revisited: Proof of Work Mining for Renewable Energy Expansion
title_fullStr Bitcoin’s Carbon Footprint Revisited: Proof of Work Mining for Renewable Energy Expansion
title_full_unstemmed Bitcoin’s Carbon Footprint Revisited: Proof of Work Mining for Renewable Energy Expansion
title_short Bitcoin’s Carbon Footprint Revisited: Proof of Work Mining for Renewable Energy Expansion
title_sort bitcoin s carbon footprint revisited proof of work mining for renewable energy expansion
topic blockchain
environmental impact
decarbonization
ancillary services
flexible load response
sustainability
url https://www.mdpi.com/2078-1547/14/3/35
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