PhD Research Focus: Life Cycle Assessment and Circular Economy in Geothermal Technologies.
Jingyi Li
PhD Researcher
Selected Publications
Other
Selected Publications
Other
2024
Li, Jingyi; Schmid, Alejandro Gallego; Stamford, Laurence
Integrated sustainability assessment of repurposing onshore abandoned wells for geothermal power generation Journal Article
In: Applied Energy, vol. 359, 2024, ISSN: 0306-2619.
@article{e6996d8b559f44faa75c1528d0bfe709,
title = {Integrated sustainability assessment of repurposing onshore abandoned wells for geothermal power generation},
author = {Jingyi Li and Alejandro Gallego Schmid and Laurence Stamford},
doi = {10.1016/j.apenergy.2024.122670},
issn = {0306-2619},
year = {2024},
date = {2024-04-01},
journal = {Applied Energy},
volume = {359},
publisher = {Elsevier BV},
abstract = {As global efforts intensify to mitigate climate change through Net-Zero by 2050, the transition from fossil fuels to renewable energy sources is of utmost importance. Within this context, geothermal power generation is an underestimated yet rapidly developing field with immense potential. A notable opportunity arises from repurposing abandoned oil and gas wells (AOGWs) as alternative sources for geothermal power production. This study employs multi-criteria decision analysis (MCDA) to examine the techno-sustainability of four geothermal power systems: i) a business-as-usual geothermal power plant (GEObau), ii) repurpose two completely AOGWs for geothermal power generation (R-GEOdouble), iii) repurpose a single completely AOGW (R-GEOsingle), iv) repurpose semi-AOGWs (i.e., wells still in operation but with high water cut, R-GEOsemi). We assessed 30 criteria across technical, environmental, economic, and social dimensions via the analytical hierarchy process. The study identifies R-GEOsemi as the most techno-sustainable option due to its superior performance across environmental, economic, and social dimensions. However, GEObau closely follows R-GEOsemi, securing its position as the second-best option, marked by its outstanding technical proficiency and robust environmental and social performance. Conversely, R-GEOdouble and R-GEOsingle show limited techno-sustainability competitiveness. When sensitivity analyses are applied to the weighting factors, R-GEOsemi demonstrates resilience and remains as the best option in most cases. However, GEObau could outperform R-GEOsemi when the value of technical criteria is increased (weightings >0.255) or when the weightings for environmental or economic aspects decrease (weightings <0.236 and < 0.244 respectively). R-GEOdouble and R-GEOsingle only overtake GEObau when the economic aspect reaches a weighting of 0.659 or more. Despite R-GEOsemi being the most promising option, it faces challenges due to limited power generation capacity and the availability of wells approaching their end-of-lives. The findings underline the necessity for broader stakeholder input, inclusion of more technical and social criteria, and data-driven decision-making processes.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
As global efforts intensify to mitigate climate change through Net-Zero by 2050, the transition from fossil fuels to renewable energy sources is of utmost importance. Within this context, geothermal power generation is an underestimated yet rapidly developing field with immense potential. A notable opportunity arises from repurposing abandoned oil and gas wells (AOGWs) as alternative sources for geothermal power production. This study employs multi-criteria decision analysis (MCDA) to examine the techno-sustainability of four geothermal power systems: i) a business-as-usual geothermal power plant (GEObau), ii) repurpose two completely AOGWs for geothermal power generation (R-GEOdouble), iii) repurpose a single completely AOGW (R-GEOsingle), iv) repurpose semi-AOGWs (i.e., wells still in operation but with high water cut, R-GEOsemi). We assessed 30 criteria across technical, environmental, economic, and social dimensions via the analytical hierarchy process. The study identifies R-GEOsemi as the most techno-sustainable option due to its superior performance across environmental, economic, and social dimensions. However, GEObau closely follows R-GEOsemi, securing its position as the second-best option, marked by its outstanding technical proficiency and robust environmental and social performance. Conversely, R-GEOdouble and R-GEOsingle show limited techno-sustainability competitiveness. When sensitivity analyses are applied to the weighting factors, R-GEOsemi demonstrates resilience and remains as the best option in most cases. However, GEObau could outperform R-GEOsemi when the value of technical criteria is increased (weightings >0.255) or when the weightings for environmental or economic aspects decrease (weightings <0.236 and < 0.244 respectively). R-GEOdouble and R-GEOsingle only overtake GEObau when the economic aspect reaches a weighting of 0.659 or more. Despite R-GEOsemi being the most promising option, it faces challenges due to limited power generation capacity and the availability of wells approaching their end-of-lives. The findings underline the necessity for broader stakeholder input, inclusion of more technical and social criteria, and data-driven decision-making processes.
Li, Jingyi; ricardo zepon Tarpani, Raphael; Gallego-Schmid, Alejandro; Stamford, Laurence
Life cycle assessment of repurposing abandoned onshore oil and gas wells for geothermal power generation Journal Article
In: Science of the Total Environment, vol. 907, 2024, ISSN: 0048-9697.
@article{abb1d007b27148afa0df09d2589233c9b,
title = {Life cycle assessment of repurposing abandoned onshore oil and gas wells for geothermal power generation},
author = {Jingyi Li and Raphael ricardo zepon Tarpani and Alejandro Gallego-Schmid and Laurence Stamford},
doi = {10.1016/j.scitotenv.2023.167843},
issn = {0048-9697},
year = {2024},
date = {2024-01-10},
journal = {Science of the Total Environment},
volume = {907},
publisher = {Elsevier BV},
abstract = {The annual global growth rate for geothermal power generation between 2021 and 2030 is targeted to be 13 % to meet net-zero emissions by 2050. Repurposing abandoned oil and gas wells (AOGWs) presents a strategic alternative to boost geothermal power by minimising the drilling requirements. This study performed the first cradle-to-grave life cycle assessment to evaluate the environmental performance of three options for geothermal power generation from repurposed oil and gas wells: i) two completely AOGWs (R-GEOdouble); ii) a single completely AOGW (R-GEOsingle); iii) two semi-AOGWs (R-GEOsemi - still in operation but with high water-cut). Their results are then compared with a business-as-usual geothermal power plant (GEObau). All 18 impact categories of the ReCiPe 2016 midpoint methodology plus cumulative energy demand have been analysed in detail, with background data from the Ecoinvent v3.8 database. R-GEOsemi is deemed the most promising repurposed system, exhibiting the lowest values in 11 impact categories. Specifically, R-GEOsemi produces 34 %, 23 %, and 14 % less CO2 eq./kWh when compared to GEObau, R-GEOdouble, and R-GEOsingle, respectively. Conversely, R-GEOdouble performed the worst in 12 impact categories, and the second worst in the rest of the indicators. Meanwhile, GEObau achieved the lowest impacts in nine categories when compared with repurposed systems, indicating the reduction of drilling and construction activities cannot always guarantee the mitigation of all environmental impacts. Sensitivity analyses showed that a longer lifetime could lower environmental impacts, but increasing annual power generation is constrained by site-specific factors. A ‘breakeven’ point analysis revealed that 85 % of repurposed systems' impact indicators could match GEObau if their lifetime reaches 30 years, but this remains uncertain. The findings of this study will be of interest to national and local governments developing future policies aimed at renewable energy transformation from oil and gas industries.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The annual global growth rate for geothermal power generation between 2021 and 2030 is targeted to be 13 % to meet net-zero emissions by 2050. Repurposing abandoned oil and gas wells (AOGWs) presents a strategic alternative to boost geothermal power by minimising the drilling requirements. This study performed the first cradle-to-grave life cycle assessment to evaluate the environmental performance of three options for geothermal power generation from repurposed oil and gas wells: i) two completely AOGWs (R-GEOdouble); ii) a single completely AOGW (R-GEOsingle); iii) two semi-AOGWs (R-GEOsemi – still in operation but with high water-cut). Their results are then compared with a business-as-usual geothermal power plant (GEObau). All 18 impact categories of the ReCiPe 2016 midpoint methodology plus cumulative energy demand have been analysed in detail, with background data from the Ecoinvent v3.8 database. R-GEOsemi is deemed the most promising repurposed system, exhibiting the lowest values in 11 impact categories. Specifically, R-GEOsemi produces 34 %, 23 %, and 14 % less CO2 eq./kWh when compared to GEObau, R-GEOdouble, and R-GEOsingle, respectively. Conversely, R-GEOdouble performed the worst in 12 impact categories, and the second worst in the rest of the indicators. Meanwhile, GEObau achieved the lowest impacts in nine categories when compared with repurposed systems, indicating the reduction of drilling and construction activities cannot always guarantee the mitigation of all environmental impacts. Sensitivity analyses showed that a longer lifetime could lower environmental impacts, but increasing annual power generation is constrained by site-specific factors. A ‘breakeven’ point analysis revealed that 85 % of repurposed systems’ impact indicators could match GEObau if their lifetime reaches 30 years, but this remains uncertain. The findings of this study will be of interest to national and local governments developing future policies aimed at renewable energy transformation from oil and gas industries.
Li, Jingyi; ricardo zepon Tarpani, Raphael; Gallego-Schmid, Alejandro; Stamford, Laurence
Life cycle assessment of repurposing abandoned onshore oil and gas wells for geothermal power generation Journal Article
In: Science of the Total Environment, vol. 907, 2024, ISSN: 0048-9697.
@article{abb1d007b27148afa0df09d2589233c9,
title = {Life cycle assessment of repurposing abandoned onshore oil and gas wells for geothermal power generation},
author = {Jingyi Li and Raphael ricardo zepon Tarpani and Alejandro Gallego-Schmid and Laurence Stamford},
doi = {10.1016/j.scitotenv.2023.167843},
issn = {0048-9697},
year = {2024},
date = {2024-01-10},
journal = {Science of the Total Environment},
volume = {907},
publisher = {Elsevier BV},
abstract = {The annual global growth rate for geothermal power generation between 2021 and 2030 is targeted to be 13 % to meet net-zero emissions by 2050. Repurposing abandoned oil and gas wells (AOGWs) presents a strategic alternative to boost geothermal power by minimising the drilling requirements. This study performed the first cradle-to-grave life cycle assessment to evaluate the environmental performance of three options for geothermal power generation from repurposed oil and gas wells: i) two completely AOGWs (R-GEOdouble); ii) a single completely AOGW (R-GEOsingle); iii) two semi-AOGWs (R-GEOsemi - still in operation but with high water-cut). Their results are then compared with a business-as-usual geothermal power plant (GEObau). All 18 impact categories of the ReCiPe 2016 midpoint methodology plus cumulative energy demand have been analysed in detail, with background data from the Ecoinvent v3.8 database. R-GEOsemi is deemed the most promising repurposed system, exhibiting the lowest values in 11 impact categories. Specifically, R-GEOsemi produces 34 %, 23 %, and 14 % less CO2 eq./kWh when compared to GEObau, R-GEOdouble, and R-GEOsingle, respectively. Conversely, R-GEOdouble performed the worst in 12 impact categories, and the second worst in the rest of the indicators. Meanwhile, GEObau achieved the lowest impacts in nine categories when compared with repurposed systems, indicating the reduction of drilling and construction activities cannot always guarantee the mitigation of all environmental impacts. Sensitivity analyses showed that a longer lifetime could lower environmental impacts, but increasing annual power generation is constrained by site-specific factors. A ‘breakeven’ point analysis revealed that 85 % of repurposed systems' impact indicators could match GEObau if their lifetime reaches 30 years, but this remains uncertain. The findings of this study will be of interest to national and local governments developing future policies aimed at renewable energy transformation from oil and gas industries.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The annual global growth rate for geothermal power generation between 2021 and 2030 is targeted to be 13 % to meet net-zero emissions by 2050. Repurposing abandoned oil and gas wells (AOGWs) presents a strategic alternative to boost geothermal power by minimising the drilling requirements. This study performed the first cradle-to-grave life cycle assessment to evaluate the environmental performance of three options for geothermal power generation from repurposed oil and gas wells: i) two completely AOGWs (R-GEOdouble); ii) a single completely AOGW (R-GEOsingle); iii) two semi-AOGWs (R-GEOsemi – still in operation but with high water-cut). Their results are then compared with a business-as-usual geothermal power plant (GEObau). All 18 impact categories of the ReCiPe 2016 midpoint methodology plus cumulative energy demand have been analysed in detail, with background data from the Ecoinvent v3.8 database. R-GEOsemi is deemed the most promising repurposed system, exhibiting the lowest values in 11 impact categories. Specifically, R-GEOsemi produces 34 %, 23 %, and 14 % less CO2 eq./kWh when compared to GEObau, R-GEOdouble, and R-GEOsingle, respectively. Conversely, R-GEOdouble performed the worst in 12 impact categories, and the second worst in the rest of the indicators. Meanwhile, GEObau achieved the lowest impacts in nine categories when compared with repurposed systems, indicating the reduction of drilling and construction activities cannot always guarantee the mitigation of all environmental impacts. Sensitivity analyses showed that a longer lifetime could lower environmental impacts, but increasing annual power generation is constrained by site-specific factors. A ‘breakeven’ point analysis revealed that 85 % of repurposed systems’ impact indicators could match GEObau if their lifetime reaches 30 years, but this remains uncertain. The findings of this study will be of interest to national and local governments developing future policies aimed at renewable energy transformation from oil and gas industries.
Li, Jingyi; Schmid, Alejandro Gallego
Circularity and Environmental Sustainability of Geothermal Energy Book Chapter
In: Yunusa-Kaltungo, Akilu (Ed.): Key Themes in Energy Management, vol. 100, pp. 119–136, Springer Cham, Switzerland, 2024, ISBN: 978-3-031-58085-7.
@inbook{f55af672769944b58f6863fb14979afd,
title = {Circularity and Environmental Sustainability of Geothermal Energy},
author = {Jingyi Li and Alejandro Gallego Schmid},
editor = {Akilu Yunusa-Kaltungo},
doi = {10.1007/978-3-031-58086-4_8},
isbn = {978-3-031-58085-7},
year = {2024},
date = {2024-01-01},
booktitle = {Key Themes in Energy Management},
volume = {100},
pages = {119–136},
publisher = {Springer Cham},
address = {Switzerland},
abstract = {This chapter examines the effectiveness of the adoption of circular economy (CE) framework into geothermal power generation to boost life cycle environmental sustainability. With geothermal energy expected to grow by 251% by the year 2030, tapping into this consistent energy source is crucial for the 2050 net-zero target. Nevertheless, challenges such as limited natural hydrothermal reservoirs and high exploration costs persist. The chapter evaluates the ‘repurpose’ strategy of CE, focusing on converting abandoned oil and gas wells (AOGWs) for geothermal power generation. Three systems, repurposed two completely AOGWs (R-GEOdouble, a single completely AOGW (R-GEOsingle), and semi-AOGWs (R-GEOsemi), are analysed against a business-as-usual geothermal plant, GEObau. Results indicate that these systems can decrease their climate change potential by 15%, 23%, and 34% respectively. Compared to GEObau, R-GEOsemi emerges as the most promising, though its advantage over GEObau is slight due to limited electricity generation. The effectiveness of repurposed systems largely depends on the choice of AOGWs, especially those with high water content. While R-GEOdouble and R-GEOsingle offer climate change mitigation benefits, their overall environmental sustainability still necessitates systematic optimisation. This chapter illuminates the potential for transitioning the fossil fuel sector to renewable energy through the use of AOGWs.},
keywords = {},
pubstate = {published},
tppubtype = {inbook}
}
This chapter examines the effectiveness of the adoption of circular economy (CE) framework into geothermal power generation to boost life cycle environmental sustainability. With geothermal energy expected to grow by 251% by the year 2030, tapping into this consistent energy source is crucial for the 2050 net-zero target. Nevertheless, challenges such as limited natural hydrothermal reservoirs and high exploration costs persist. The chapter evaluates the ‘repurpose’ strategy of CE, focusing on converting abandoned oil and gas wells (AOGWs) for geothermal power generation. Three systems, repurposed two completely AOGWs (R-GEOdouble, a single completely AOGW (R-GEOsingle), and semi-AOGWs (R-GEOsemi), are analysed against a business-as-usual geothermal plant, GEObau. Results indicate that these systems can decrease their climate change potential by 15%, 23%, and 34% respectively. Compared to GEObau, R-GEOsemi emerges as the most promising, though its advantage over GEObau is slight due to limited electricity generation. The effectiveness of repurposed systems largely depends on the choice of AOGWs, especially those with high water content. While R-GEOdouble and R-GEOsingle offer climate change mitigation benefits, their overall environmental sustainability still necessitates systematic optimisation. This chapter illuminates the potential for transitioning the fossil fuel sector to renewable energy through the use of AOGWs.
2023
Li, Jingyi; Schmid, Alejandro Gallego; Hollis, Cathy; Adams, Charlotte
Repurposing Disused Coal Mines for Geothermal Heat Networks: Towards an Environmental and Social Sustainable Solution Conference
2023, (10th Geothermal Energy Symposium ; Conference date: 20-11-2023 Through 22-11-2023).
@conference{a97768afaebf44268f232048a8f0de89b,
title = {Repurposing Disused Coal Mines for Geothermal Heat Networks: Towards an Environmental and Social Sustainable Solution},
author = {Jingyi Li and Alejandro Gallego Schmid and Cathy Hollis and Charlotte Adams},
year = {2023},
date = {2023-11-01},
note = {10th Geothermal Energy Symposium ; Conference date: 20-11-2023 Through 22-11-2023},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Li, Jingyi; Schmid, Alejandro Gallego; Hollis, Cathy; Adams, Charlotte
Repurposing Disused Coal Mines for Geothermal Heat Networks: Towards an Environmental and Social Sustainable Solution Conference
2023, (10th Geothermal Energy Symposium ; Conference date: 20-11-2023 Through 22-11-2023).
@conference{a97768afaebf44268f232048a8f0de89,
title = {Repurposing Disused Coal Mines for Geothermal Heat Networks: Towards an Environmental and Social Sustainable Solution},
author = {Jingyi Li and Alejandro Gallego Schmid and Cathy Hollis and Charlotte Adams},
year = {2023},
date = {2023-11-01},
note = {10th Geothermal Energy Symposium ; Conference date: 20-11-2023 Through 22-11-2023},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Li, Jingyi; Tarpani, Raphael Ricardo Zepon; Stamford, Laurence; Gallego-Schmid, Alejandro
Life cycle sustainability assessment and circularity of geothermal power plants Journal Article
In: Sustainable Production and Consumption, vol. 35, pp. 141–156, 2023, ISSN: 2352-5509.
@article{336a5131a8ba43a789278dbd38afc543,
title = {Life cycle sustainability assessment and circularity of geothermal power plants},
author = {Jingyi Li and Raphael Ricardo Zepon Tarpani and Laurence Stamford and Alejandro Gallego-Schmid},
doi = {10.1016/j.spc.2022.10.027},
issn = {2352-5509},
year = {2023},
date = {2023-01-01},
journal = {Sustainable Production and Consumption},
volume = {35},
pages = {141–156},
publisher = {Elsevier BV},
abstract = {Geothermal power generation is expected to increase fivefold worldwide by 2040 compared to 2018. The upcoming growth of geothermal power plants (GPPs) requires assessments of its role in tackling climate change and other impacts within complex environmental, economic and social systems. This study presents the first literature review of GPPs, including comparisons among different GPP technologies, based on life cycle sustainability and circular economy perspectives. A total of 76 core literature studies on geothermal-related topics are reviewed, including technology choices, and critically discussed in terms of their environmental, economic, social and circular economy aspects. Firstly, seven life cycle environmental impact indicators (global warming, acidification, eutrophication, human toxicity, ozone depletion, photochemical oxidation, and cumulative energy demand) are compared both within GPP technologies and to other conventional electricity generation technologies (such as coal and hydro). Secondly, economic sustainability is considered via life cycle costing, and the results show that geothermal could be economically competitive when compared to solar photovoltaic (PV), hydro, and even wind energy sources. Thirdly, social aspects are discussed considering 15 articles that evaluated concerns such as public acceptance, technology safety and local employment rate, although none rigorously considered a life cycle approach. Lastly, a total of 12 articles were found linking the circular economy with GPPs and elaborating on some of the ‘9Rs’ framework. To improve the effectiveness of future research, studies should focus on fulfilling major data gaps in literature such as the lack of detailed documentation for specific materials and background process choices in life cycle assessment databases. The development of GPPs can be an important alternative in efforts to decrease climate change impacts and pursue cleaner energy sources in countries where geothermal energy is more easily available.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Geothermal power generation is expected to increase fivefold worldwide by 2040 compared to 2018. The upcoming growth of geothermal power plants (GPPs) requires assessments of its role in tackling climate change and other impacts within complex environmental, economic and social systems. This study presents the first literature review of GPPs, including comparisons among different GPP technologies, based on life cycle sustainability and circular economy perspectives. A total of 76 core literature studies on geothermal-related topics are reviewed, including technology choices, and critically discussed in terms of their environmental, economic, social and circular economy aspects. Firstly, seven life cycle environmental impact indicators (global warming, acidification, eutrophication, human toxicity, ozone depletion, photochemical oxidation, and cumulative energy demand) are compared both within GPP technologies and to other conventional electricity generation technologies (such as coal and hydro). Secondly, economic sustainability is considered via life cycle costing, and the results show that geothermal could be economically competitive when compared to solar photovoltaic (PV), hydro, and even wind energy sources. Thirdly, social aspects are discussed considering 15 articles that evaluated concerns such as public acceptance, technology safety and local employment rate, although none rigorously considered a life cycle approach. Lastly, a total of 12 articles were found linking the circular economy with GPPs and elaborating on some of the ‘9Rs’ framework. To improve the effectiveness of future research, studies should focus on fulfilling major data gaps in literature such as the lack of detailed documentation for specific materials and background process choices in life cycle assessment databases. The development of GPPs can be an important alternative in efforts to decrease climate change impacts and pursue cleaner energy sources in countries where geothermal energy is more easily available.
2022
Li, Jingyi; Stamford, Laurence; Tarpani, Raphael; Schmid, Alejandro Gallego
Life Cycle Assessment of Repurposed Oil Wells for Geothermal Power Production Conference
2022.
@conference{17d5677c4973496db844d3e236fcebcab,
title = {Life Cycle Assessment of Repurposed Oil Wells for Geothermal Power Production},
author = {Jingyi Li and Laurence Stamford and Raphael Tarpani and Alejandro Gallego Schmid},
year = {2022},
date = {2022-01-01},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Li, Jingyi; Stamford, Laurence; Tarpani, Raphael; Schmid, Alejandro Gallego
Life Cycle Assessment of Repurposed Oil Wells for Geothermal Power Production Conference
2022.
@conference{17d5677c4973496db844d3e236fcebca,
title = {Life Cycle Assessment of Repurposed Oil Wells for Geothermal Power Production},
author = {Jingyi Li and Laurence Stamford and Raphael Tarpani and Alejandro Gallego Schmid},
year = {2022},
date = {2022-01-01},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
2021
Li, Jingyi; Tarpani, Raphael; Schmid, Alejandro Gallego; Stamford, Laurence
Adopting Circular Economy Strategies into Geothermal Power Generation Proceedings Article
In: 3rd Symposium on Circular Economy and Sustainability, 2021.
@inproceedings{4737f47e585f43698b3499c0a7d98204b,
title = {Adopting Circular Economy Strategies into Geothermal Power Generation},
author = {Jingyi Li and Raphael Tarpani and Alejandro Gallego Schmid and Laurence Stamford},
year = {2021},
date = {2021-06-29},
booktitle = {3rd Symposium on Circular Economy and Sustainability},
abstract = {Geothermal energy is a stable and ubiquitous renewable energy source, which has been successfully deployed for heating, cooling, and electricity production in many nations around the world. Therefore, it has been considered a promising technique to mitigate climate change and other impacts. However, few studies have addressed circular economy (CE) strategies for geothermal energy utilisation, leaving an important but underexplored gap in literature. This work evaluates how different CE strategies can aid geothermal energy to become an even more sustainable energy source.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Geothermal energy is a stable and ubiquitous renewable energy source, which has been successfully deployed for heating, cooling, and electricity production in many nations around the world. Therefore, it has been considered a promising technique to mitigate climate change and other impacts. However, few studies have addressed circular economy (CE) strategies for geothermal energy utilisation, leaving an important but underexplored gap in literature. This work evaluates how different CE strategies can aid geothermal energy to become an even more sustainable energy source.
Li, Jingyi; Tarpani, Raphael; Schmid, Alejandro Gallego; Stamford, Laurence
Adopting Circular Economy Strategies into Geothermal Power Generation Proceedings Article
In: 3rd Symposium on Circular Economy and Sustainability, 2021.
@inproceedings{4737f47e585f43698b3499c0a7d98204,
title = {Adopting Circular Economy Strategies into Geothermal Power Generation},
author = {Jingyi Li and Raphael Tarpani and Alejandro Gallego Schmid and Laurence Stamford},
year = {2021},
date = {2021-06-29},
booktitle = {3rd Symposium on Circular Economy and Sustainability},
abstract = {Geothermal energy is a stable and ubiquitous renewable energy source, which has been successfully deployed for heating, cooling, and electricity production in many nations around the world. Therefore, it has been considered a promising technique to mitigate climate change and other impacts. However, few studies have addressed circular economy (CE) strategies for geothermal energy utilisation, leaving an important but underexplored gap in literature. This work evaluates how different CE strategies can aid geothermal energy to become an even more sustainable energy source.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Geothermal energy is a stable and ubiquitous renewable energy source, which has been successfully deployed for heating, cooling, and electricity production in many nations around the world. Therefore, it has been considered a promising technique to mitigate climate change and other impacts. However, few studies have addressed circular economy (CE) strategies for geothermal energy utilisation, leaving an important but underexplored gap in literature. This work evaluates how different CE strategies can aid geothermal energy to become an even more sustainable energy source.
Li, Jingyi; Stamford, Laurence; Schmid, Alejandro Gallego
Life Cycle Assessment in Enhanced Geothermal Systems Conference
2021.
@conference{ced221b5ae434c949d80afacdc956972b,
title = {Life Cycle Assessment in Enhanced Geothermal Systems},
author = {Jingyi Li and Laurence Stamford and Alejandro Gallego Schmid},
year = {2021},
date = {2021-01-01},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Li, Jingyi; Stamford, Laurence; Schmid, Alejandro Gallego
Life Cycle Assessment in Enhanced Geothermal Systems Conference
2021.
@conference{ced221b5ae434c949d80afacdc956972,
title = {Life Cycle Assessment in Enhanced Geothermal Systems},
author = {Jingyi Li and Laurence Stamford and Alejandro Gallego Schmid},
year = {2021},
date = {2021-01-01},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
0000
Li, Jingyi; Tarpani, Raphael Ricardo Zepon; Stamford, Laurence; Gallego-Schmid, Alejandro
Life cycle sustainability assessment and circularity of geothermal power plants Journal Article
In: Sustainable Production and Consumption, vol. 35, pp. 141–156, 0000, ISSN: 2352-5509.
@article{336a5131a8ba43a789278dbd38afc543b,
title = {Life cycle sustainability assessment and circularity of geothermal power plants},
author = {Jingyi Li and Raphael Ricardo Zepon Tarpani and Laurence Stamford and Alejandro Gallego-Schmid},
doi = {10.1016/j.spc.2022.10.027},
issn = {2352-5509},
journal = {Sustainable Production and Consumption},
volume = {35},
pages = {141–156},
publisher = {Elsevier BV},
abstract = {Geothermal power generation is expected to increase fivefold worldwide by 2040 compared to 2018. The upcoming growth of geothermal power plants (GPPs) requires assessments of its role in tackling climate change and other impacts within complex environmental, economic and social systems. This study presents the first literature review of GPPs, including comparisons among different GPP technologies, based on life cycle sustainability and circular economy perspectives. A total of 76 core literature studies on geothermal-related topics are reviewed, including technology choices, and critically discussed in terms of their environmental, economic, social and circular economy aspects. Firstly, seven life cycle environmental impact indicators (global warming, acidification, eutrophication, human toxicity, ozone depletion, photochemical oxidation, and cumulative energy demand) are compared both within GPP technologies and to other conventional electricity generation technologies (such as coal and hydro). Secondly, economic sustainability is considered via life cycle costing, and the results show that geothermal could be economically competitive when compared to solar photovoltaic (PV), hydro, and even wind energy sources. Thirdly, social aspects are discussed considering 15 articles that evaluated concerns such as public acceptance, technology safety and local employment rate, although none rigorously considered a life cycle approach. Lastly, a total of 12 articles were found linking the circular economy with GPPs and elaborating on some of the ‘9Rs’ framework. To improve the effectiveness of future research, studies should focus on fulfilling major data gaps in literature such as the lack of detailed documentation for specific materials and background process choices in life cycle assessment databases. The development of GPPs can be an important alternative in efforts to decrease climate change impacts and pursue cleaner energy sources in countries where geothermal energy is more easily available.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Geothermal power generation is expected to increase fivefold worldwide by 2040 compared to 2018. The upcoming growth of geothermal power plants (GPPs) requires assessments of its role in tackling climate change and other impacts within complex environmental, economic and social systems. This study presents the first literature review of GPPs, including comparisons among different GPP technologies, based on life cycle sustainability and circular economy perspectives. A total of 76 core literature studies on geothermal-related topics are reviewed, including technology choices, and critically discussed in terms of their environmental, economic, social and circular economy aspects. Firstly, seven life cycle environmental impact indicators (global warming, acidification, eutrophication, human toxicity, ozone depletion, photochemical oxidation, and cumulative energy demand) are compared both within GPP technologies and to other conventional electricity generation technologies (such as coal and hydro). Secondly, economic sustainability is considered via life cycle costing, and the results show that geothermal could be economically competitive when compared to solar photovoltaic (PV), hydro, and even wind energy sources. Thirdly, social aspects are discussed considering 15 articles that evaluated concerns such as public acceptance, technology safety and local employment rate, although none rigorously considered a life cycle approach. Lastly, a total of 12 articles were found linking the circular economy with GPPs and elaborating on some of the ‘9Rs’ framework. To improve the effectiveness of future research, studies should focus on fulfilling major data gaps in literature such as the lack of detailed documentation for specific materials and background process choices in life cycle assessment databases. The development of GPPs can be an important alternative in efforts to decrease climate change impacts and pursue cleaner energy sources in countries where geothermal energy is more easily available.
Li, Jingyi; Schmid, Alejandro Gallego; Stamford, Laurence
Integrated sustainability assessment of repurposing onshore abandoned wells for geothermal power generation Journal Article
In: Applied Energy, vol. 359, 0000, ISSN: 0306-2619.
@article{e6996d8b559f44faa75c1528d0bfe709b,
title = {Integrated sustainability assessment of repurposing onshore abandoned wells for geothermal power generation},
author = {Jingyi Li and Alejandro Gallego Schmid and Laurence Stamford},
doi = {10.1016/j.apenergy.2024.122670},
issn = {0306-2619},
journal = {Applied Energy},
volume = {359},
publisher = {Elsevier BV},
abstract = {As global efforts intensify to mitigate climate change through Net-Zero by 2050, the transition from fossil fuels to renewable energy sources is of utmost importance. Within this context, geothermal power generation is an underestimated yet rapidly developing field with immense potential. A notable opportunity arises from repurposing abandoned oil and gas wells (AOGWs) as alternative sources for geothermal power production. This study employs multi-criteria decision analysis (MCDA) to examine the techno-sustainability of four geothermal power systems: i) a business-as-usual geothermal power plant (GEObau), ii) repurpose two completely AOGWs for geothermal power generation (R-GEOdouble), iii) repurpose a single completely AOGW (R-GEOsingle), iv) repurpose semi-AOGWs (i.e., wells still in operation but with high water cut, R-GEOsemi). We assessed 30 criteria across technical, environmental, economic, and social dimensions via the analytical hierarchy process. The study identifies R-GEOsemi as the most techno-sustainable option due to its superior performance across environmental, economic, and social dimensions. However, GEObau closely follows R-GEOsemi, securing its position as the second-best option, marked by its outstanding technical proficiency and robust environmental and social performance. Conversely, R-GEOdouble and R-GEOsingle show limited techno-sustainability competitiveness. When sensitivity analyses are applied to the weighting factors, R-GEOsemi demonstrates resilience and remains as the best option in most cases. However, GEObau could outperform R-GEOsemi when the value of technical criteria is increased (weightings >0.255) or when the weightings for environmental or economic aspects decrease (weightings <0.236 and < 0.244 respectively). R-GEOdouble and R-GEOsingle only overtake GEObau when the economic aspect reaches a weighting of 0.659 or more. Despite R-GEOsemi being the most promising option, it faces challenges due to limited power generation capacity and the availability of wells approaching their end-of-lives. The findings underline the necessity for broader stakeholder input, inclusion of more technical and social criteria, and data-driven decision-making processes.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
As global efforts intensify to mitigate climate change through Net-Zero by 2050, the transition from fossil fuels to renewable energy sources is of utmost importance. Within this context, geothermal power generation is an underestimated yet rapidly developing field with immense potential. A notable opportunity arises from repurposing abandoned oil and gas wells (AOGWs) as alternative sources for geothermal power production. This study employs multi-criteria decision analysis (MCDA) to examine the techno-sustainability of four geothermal power systems: i) a business-as-usual geothermal power plant (GEObau), ii) repurpose two completely AOGWs for geothermal power generation (R-GEOdouble), iii) repurpose a single completely AOGW (R-GEOsingle), iv) repurpose semi-AOGWs (i.e., wells still in operation but with high water cut, R-GEOsemi). We assessed 30 criteria across technical, environmental, economic, and social dimensions via the analytical hierarchy process. The study identifies R-GEOsemi as the most techno-sustainable option due to its superior performance across environmental, economic, and social dimensions. However, GEObau closely follows R-GEOsemi, securing its position as the second-best option, marked by its outstanding technical proficiency and robust environmental and social performance. Conversely, R-GEOdouble and R-GEOsingle show limited techno-sustainability competitiveness. When sensitivity analyses are applied to the weighting factors, R-GEOsemi demonstrates resilience and remains as the best option in most cases. However, GEObau could outperform R-GEOsemi when the value of technical criteria is increased (weightings >0.255) or when the weightings for environmental or economic aspects decrease (weightings <0.236 and < 0.244 respectively). R-GEOdouble and R-GEOsingle only overtake GEObau when the economic aspect reaches a weighting of 0.659 or more. Despite R-GEOsemi being the most promising option, it faces challenges due to limited power generation capacity and the availability of wells approaching their end-of-lives. The findings underline the necessity for broader stakeholder input, inclusion of more technical and social criteria, and data-driven decision-making processes.
