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Access the latest IEAGHG publications. Our authoritative peer-reviewed publications cover a wide range of topics including carbon capture, transport, storage, monitoring, regulation, and more.
This study presents a systematic review of waste-to-hydrogen (WtH) technologies and conducts analysis of the technological, economical, and environmental aspects of the most promising waste-to-low carbon hydrogen technologies for near-term commercial deployment.
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CO2 leakage from geological storage is considered unlikely. However, it is important to understand environmental and health risks to ensure appropriate mitigation and monitoring is established.
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The 7th International Workshop on Offshore Geologic CO2 storage was held in Port Arthur, TX, on September 17-18th 2025.
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An evaluation of various electrolytic hydrogen production pathways focusing on their technical, economic, and environmental aspects and comparing these with hydrogen production routes that involve fossil fuel with carbon capture and storage (CCS) abatement.
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This study explores the interdependencies of different power generation technologies in a highly decarbonised future.
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This comprehensive seal integrity review, undertaken by CO₂CRC on behalf of IEAGHG, provides a detailed, updated exploration of the critical aspects of seal potential in the context of the geological storage of CO₂.
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This report is a focused review of recent developments regarding insurance coverage for carbon dioxide (CO₂) geological storage projects. It seeks to address the following: what companies are offering or planning to offer insurance to CO₂ storage projects, what is the scope and duration of the coverage offered, and does coverage extend to the transportation of CO₂ to the project site? This work and report was prepared by Franz Hiebert.
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This work provides a careful and thorough exploration of the major issues involved in the transfer of use of a field from hydrocarbon extraction to CO₂ storage, to identify both the pros and cons of such a transition.
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This Technical Review provides an overview of 22 CO₂ storage sites from around the world. These include CO₂-EOR, commercial scale storage sites and a number of pilot and demonstration storage sites in both depleted hydrocarbon reservoirs and saline reservoirs. Its primary aim is to provide a convenient source of collated information with a specific focus on technical information that are in the public domain.
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Explore the latest developments in carbon capture technology.
View All Capture Publications
CCS, in the context of power CCS technologies, will be an essential component of the portfolio of technologies required to reach net-zero emissions in the power sector. This study explores the potential to reduce the cost and accelerate the uptake of power CCS technologies.
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The 7th edition of the Post Combustion Capture Conference (PCCC-7) was held on the 25?28 September 2023 and was jointly hosted by the IEAGHG, U.S. Department of Energy (DOE) and the National Energy Technology Laboratory (NETL) and sponsored by Worley, Shell, and Mitsubishi Heavy Industries. (MHI).
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This study primarily presents a comparative analysis of steelmaking pathways to cost-effectively decarbonise a steel mill, taking a life-cycle perspective on associated environmental impacts. The roll-out of clean steel technologies is envisioned to have a significant implication for support infrastructure. Therefore, a secondary objective of the study is to gain insights into the primary energy and infrastructure implications associated with large-scale deployment of different steel decarbonisation pathways. Clean steel production will likely be more expensive than steel produced today; this poses additional economic strains on steel producers and consumers. Consequently, a third objective is to estimate the price premium that clean steel could command in existing and future markets. Further, this study formulates recommendations for key stakeholders to support the sector and outlines recommendations for further work.
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This study, undertaken on behalf of IEAGHG by Element Energy (now a part of ERM), explores the role of CCS in decarbonising small-scale industry and power generation applications. While relatively under investigated compared to their larger scale counterparts, reaching net zero will be dependent on successfully addressing the emissions from small-scale facilities. The findings from the study will be of interest to the broader energy community but, in particular, should benefit project developers, the finance community and policymakers.
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The 9th High Temperature Solid Looping Cycles Network (HTSLCN) Meeting took place from 14th to 15th March 2023 at Palazzo Farnese in Piacenza, Italy, hosted by the CLEANKER consortium. 82 attendees enjoyed a two-day programme with a total of 28 presentations, the official closure of the CLEANKER project with a visit to the pilot plant, a relaxing dinner and a guided tour in the museum of Palazzo Farnese about the millennial history of the city of Piacenza and its territory, from the preRoman age to the XX century.
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The aim of the workshop was to provide members and other stakeholders with an update on the status of CDR, identify crucial knowledge gaps and the mechanisms to resolve them, and find possible cooperation/collaboration opportunities.
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In modern power grids, a power plant with CO₂ capture will be required to operate as a low-carbon, flexible, dispatchable power generator. A recent IEAGHG study showed it is possible to achieve net-zero CO₂ emissions from coal-fired and gas-fired power generation by employing higher capture rates and, in the case of coal-fired generation, by employing a mix of capture rates and biomass.
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The primary objective of this study is to review the comparative analysis of blue hydrogen production (that is hydrogen derived from fossil fuels and associated CCS) technologies from oil and oil-based feedstocks as well as the supply chain implication. Further, this study includes techno-economic and life cycle assessments of different technology production configurations in regions that have access to oil resources and potential for the deployment of CCS infrastructure at scale.
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A key objective of the study was to explore the concept of ‘value’, when applied to a technology deployed in a low-carbon energy system. CCUS is an available mitigation option to support energy transitions and has been highlighted by global IAMs as a necessary technology to limit anthropogenic warming to well below 2°C. Despite this, there continues to be dissent among academics, business leaders and policymakers regarding the role CCUS can or should play in a low-carbon future. This opposition appears to stem not only from a narrow and incomplete focus on cost, and the perception that CCUS is a high-cost mitigation option under all circumstances, but also a failure to recognise the value of CCUS from other perspectives, such as human, social and environmental, to support the energy transition to net zero. As a result, a wider, deeper, and multi-disciplinary review of the ‘value’ of CCUS is explored. Recent literature spanning sector-specific techno-economic models, global and regional IAMs, and social studies to explore the diverse value of CCUS is reviewed. Results from Princeton University’s Net-Zero America study are summarised, where five alternate modelled pathways to net-zero emissions in the United States provided an exceptional level of sectoral, temporal and spatial granularity to highlight the value of CCUS in these pathways. Finally, a semi-quantitative, 2×2 decision framework was introduced to help policymakers screen the relative competitiveness of CCUS as a mitigation option across multiple domains. This framework was applied across a number of case studies, including the United States, the UK, Indonesia, Australia and Japan, to highlight under what circumstances CCUS might prove to be a valuable mitigation option to help these jurisdictions achieve time-bound mitigation goals.
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The primary objective of this study is to conduct a techno-economic and environmental assessment of the production of natural gas-based hydrogen with accompanying carbon capture and storage (CCS) technology. Further, the purpose of this study is to enrich knowledge and compare the deployment of steam methane reforming (SMR), electrified SMR (E-SMR), autothermal reforming (ATR), and partial oxidation (POX) with CCS in the Netherlands. The findings of this study will be of interest to policy makers, industrial emitters, as well as technology developers.
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Unearth the latest developments in geological CO₂ storage.
View All Storage Publications
CO2 leakage from geological storage is considered unlikely. However, it is important to understand environmental and health risks to ensure appropriate mitigation and monitoring is established.
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The 7th International Workshop on Offshore Geologic CO2 storage was held in Port Arthur, TX, on September 17-18th 2025.
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This comprehensive seal integrity review, undertaken by CO₂CRC on behalf of IEAGHG, provides a detailed, updated exploration of the critical aspects of seal potential in the context of the geological storage of CO₂.
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This report is a focused review of recent developments regarding insurance coverage for carbon dioxide (CO₂) geological storage projects. It seeks to address the following: what companies are offering or planning to offer insurance to CO₂ storage projects, what is the scope and duration of the coverage offered, and does coverage extend to the transportation of CO₂ to the project site? This work and report was prepared by Franz Hiebert.
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This work provides a careful and thorough exploration of the major issues involved in the transfer of use of a field from hydrocarbon extraction to CO₂ storage, to identify both the pros and cons of such a transition.
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This Technical Review provides an overview of 22 CO₂ storage sites from around the world. These include CO₂-EOR, commercial scale storage sites and a number of pilot and demonstration storage sites in both depleted hydrocarbon reservoirs and saline reservoirs. Its primary aim is to provide a convenient source of collated information with a specific focus on technical information that are in the public domain.
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The IEAGHG Monitoring Network aims to assess new technologies and techniques in the monitoring of CO₂ storage, determine the limitations, accuracy and applicability of monitoring techniques, disseminate information from research and pilot storage projects around the world, develop extensive monitoring guidelines for the different sub-categories of geological storage; oil and gas fields, unmineable coal seams, and saline aquifers covering the differing conditions and reservoir properties encountered globally as well as to engage with relevant regulatory bodies.
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The 6th International Workshop on Offshore Geologic CO₂ Storage was held in Aberdeen on 13-14 September. Organised with the University of Texas and hosted by the University of Aberdeen. The loca on was very appropriate as we were co-hosted and sponsored by Storegga who leads the Acorn project nearby in Scotland. This project had been recently announced by the UK government as a Track 2 Cluster project. This 6th workshop had 190 delegates (60 in-person and 130 virtual) from 35 countries, with a good mix of industry, researchers and regulators.
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This work, undertaken on behalf of IEAGHG by TNO and SINTEF, provides an overview of temporary / interim CO₂ storage, or ‘holding’, options (also called buffers) and investigates the role of buffer storage and its potential to create flexible and robust carbon capture and storage (CCS) chains. The report looks at current and emerging buffer technologies, conducts simulations to demonstrate the temporary storage required for given flow-rate scenarios and discusses the impact of buffer capacity on transport costs. In the report, the storage requested in the chain for normal operation is presented as " temporary storage" and storage to give buffer capacity is presented as " buffer storage". This report has focussed on buffering at the emitter site. The results of this study will benefit CO₂ storage site project developers, operators, financiers and regulators.
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The CO₂ Storage Resources Management System (SRMS) is a classification scheme to quantify, classify and categorise CO₂ storage resources. It comprises ‘total storage resources’, which are understood as maximum (theoretical) storage quantities that could ever be accommodated in the subsurface. Comprising maximum mobile CO₂ in structural/stratigraphic traps, maximum residually trapped CO₂ in other parts of the formation, and maximum dissolution potential in remaining formation water. ‘Storable quantities’ are understood as accessible from one or several current or future projects. It is the sum of capacity, contingent and prospective resources. The concept of ‘storage coefficient’ ‘E’ is the ratio of the subsurface volume of CO₂ storable quantities to either the total storage resources or the pore volume. The calculation is arguably complicated as E is impacted by lithological heterogeneity, trapping structures, boundary conditions, injection rates, well spacing, fluid properties etc. Due to its complexity, there is much controversy on how to estimate E, with some arguing it should not be used at all and that reservoir simulation is a better path. However, estimates for E are used in most regional mapping studies. This study explores storage resource classification schemes and their evolution in understanding, the calculation of storage resources and the storage co-efficient. This is explored in terms of calculating E for CO₂ storage sites, through flow modelling and analytical solutions.
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Uncover essential insights into the safe transport of CO₂ at scale.
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The workshop aimed to facilitate the exchange of knowledge and insights among a panel of international experts on CO₂ conditioning, with the goal of informing the scope of a technical specification for a comprehensive IEAGHG report.
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This work, undertaken on behalf of IEAGHG by TNO and SINTEF, provides an overview of temporary / interim CO₂ storage, or ‘holding’, options (also called buffers) and investigates the role of buffer storage and its potential to create flexible and robust carbon capture and storage (CCS) chains. The report looks at current and emerging buffer technologies, conducts simulations to demonstrate the temporary storage required for given flow-rate scenarios and discusses the impact of buffer capacity on transport costs. In the report, the storage requested in the chain for normal operation is presented as " temporary storage" and storage to give buffer capacity is presented as " buffer storage". This report has focussed on buffering at the emitter site. The results of this study will benefit CO₂ storage site project developers, operators, financiers and regulators.
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Large-scale CO₂ storage will entail substantial transportation of CO₂ from either point-sources or hub collection points to geological formations capable of storing thousands of tonnes of CO₂ in supercritical form. In many parts of the world the most suitable storage options for large-scale capacity will be in offshore formations such as the North Sea. Consequently, it is important to build an understanding of the most suitable techno-economic solutions for the trans-shipment of CO₂ from shore facilities to offshore storage locations. This study has explored a series of options to gain a more detailed comparison of shipping CO₂ either directly by sea tanker to a storage site, or via an intermediate stage, to a shore facility in closer proximity to a storage site prior to transfer via pipeline. These options have also been compared to direct transfer via pipeline.
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Our recent study ‘Case Studies of CO₂ Storage in Depleted Oil and Gas Fields’ (2017-01) concluded that CO₂ storage in depleted fields would not only be viable with potentially lower risk but could also be relatively cost effective, providing important intermediate-scale storage resources. The report highlighted that re-using an O&G fields would be beneficial as “there would likely be cost savings over saline aquifer sites, particularly in the characterisation stages (where there is the advantage of production history and proved hydrocarbon retention to reduce uncertainty in containment and capacity)”.
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The study is a first stage assessment of a novel concept of transporting ethane from the USA in dedicated maritime carriers to Europe, which are modified from standard designs to be equipped to carry both ethane and CO<sub>2</sub>, so that CO<sub>2</sub> can be transported back (back hauled) to the USA for use in CO₂-EOR operations.
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This study has reviewed different transport and storage scenarios to reflect the range of full-scale commercial operations. In addition to a wide ranging literature review a survey of industrial, utility, pipeline and CO<sub>2</sub>-EOR operators was also conducted to obtain their insights of CO<sub>2</sub> transport and storage. Owing to the sensitivity of these commercial operations it has not been possible to attribute background information to either individuals or their companies. Anonymity has not prevented the inclusion of real world data on exhaust gas composition from different sources including power generation (coal and natural gas), oil refining, gas processing, cement, hydrogen production, and ethanol production. It also includes background information on actual CO<sub>2</sub> pipeline operation, including network hubs, and CO<sub>2</sub> CO<sub>2</sub>-EOR experience in the United States. Experience from different industrial scale injection projects such as Sleipner, Snøhvit and In Salah, has been included. The study has investigated how flexible operation affects CO<sub>2</sub> storage and the measures adopted to accommodate intermittent supply. There are a series of prioritized recommendations based on the gaps in knowledge.
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The purpose of the study is to examine the characteristics of the various dehydration processes and the way they can be best integrated into the CCS system. Moisture in CO<sub>2</sub> can lead to corrosion and hydrate formation. It is necessary to dehydrate CO<sub>2</sub> streams prior to transporting the product in carbon steel pipelines. Several different types of CO<sub>2</sub> capture processes exist. The type selected for use is dependent upon the basic type of combustion process in operation, e.g. coal or natural gas. The CO<sub>2</sub> produced by the various combustion and associated capture processes is of different quality, containing different inerts and impurities, with varying compositions and conditions. The dehydration process can be significantly affected by these differences; it was therefore necessary to consider the different types of capture process separately within this study.
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The deliverables for this study consist of a reference manual, database, interactive web tool and webinar. The reference manual highlights key design, construction, operational and regulatory learnings. A database, containing more than 100 data elements, complements the reference manual
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Projections of the scale on which CCS needs to be deployed to meet targets for CO₂ emissions reductions indicate that a massive CO₂ pipeline infrastructure will be required. To date CCS systems have tended to be based on dedicated pipelines connecting source to sink although some studies of regional CO₂ pipeline infrastructure requirements have been carried out. The purpose of this study is to examine the wider issues including design, financing, economics and regional differences.
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A contract to develop and upgrade the original Woodhill program and the network program was awarded to Gastec UK/AMEC who had already produced the new network design program. After obtaining the original code from Woodhill-Frontier options were examined and it was felt that as both programs were Excel-based it would be simplest to amalgamate them into one program using the original Woodhill interface where possible.The possibility of adding a graphical map-based interface for the distributed collection network was investigated as an additional option but although possible the necessary licence for commercial use was found to be too costly. It was on this basis that GastecUK/AMEC proceeded with the development of the upgraded calculator.
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Explore how we can make the most out of our emissions.
View All Utilisation Publications
This study presents a systematic review of waste-to-hydrogen (WtH) technologies and conducts analysis of the technological, economical, and environmental aspects of the most promising waste-to-low carbon hydrogen technologies for near-term commercial deployment.
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An evaluation of various electrolytic hydrogen production pathways focusing on their technical, economic, and environmental aspects and comparing these with hydrogen production routes that involve fossil fuel with carbon capture and storage (CCS) abatement.
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Over 4 billion tonnes of cement are produced each year, equating to approximately 8% of global anthropogenic CO₂ emissions, and this industry will continue to grow with the expansion of the built environment at a time that emissions need to be reduced. The utilisation or reduction of CO₂ within cement, concrete and building materials could be a valuable way to contribute to emissions reductions in the sector , but there are several barriers, including the current state of standards, regulations and policies. This study will provide useful information for the technical and research community, the CCUS industry, the construction industry, and policymakers, providing an unbiased and non-prescriptive evaluation of international standards and testing relevant to novel carbonaceous building materials to address some of those barriers. The market potential for CO₂ utilisation processes in the construction industry is also investigated, and the methods for certifying and measuring embodied carbon content of carbonated building materials is evaluated and the challenges therein.
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This study aims to assess the costs and greenhouse gas (GHG) emissions performance of selected electrochemical CO₂ conversion pathways. It applies a learning curve method to project costs up to 2050.
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The aim of the study is to provide a dispassionate review and overview of scenarios where geothermal energy and CO₂ utilisation and storage technologies can be combined for mutual benefit and contribute to Net Zero targets. Sourced from a rich body of literature from global research institutes and some demonstration projects many of the concepts identified have been conceptualised over the past 20 years and are still in the early concept stage. These concepts have been categorised, described and evaluated using qualitative and quantitative methods. And a map based screening exercise useful for initial evaluation of areas suitable for combined synergies has been undertaken.
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A key objective of the study was to explore the concept of ‘value’, when applied to a technology deployed in a low-carbon energy system. CCUS is an available mitigation option to support energy transitions and has been highlighted by global IAMs as a necessary technology to limit anthropogenic warming to well below 2°C. Despite this, there continues to be dissent among academics, business leaders and policymakers regarding the role CCUS can or should play in a low-carbon future. This opposition appears to stem not only from a narrow and incomplete focus on cost, and the perception that CCUS is a high-cost mitigation option under all circumstances, but also a failure to recognise the value of CCUS from other perspectives, such as human, social and environmental, to support the energy transition to net zero. As a result, a wider, deeper, and multi-disciplinary review of the ‘value’ of CCUS is explored. Recent literature spanning sector-specific techno-economic models, global and regional IAMs, and social studies to explore the diverse value of CCUS is reviewed. Results from Princeton University’s Net-Zero America study are summarised, where five alternate modelled pathways to net-zero emissions in the United States provided an exceptional level of sectoral, temporal and spatial granularity to highlight the value of CCUS in these pathways. Finally, a semi-quantitative, 2×2 decision framework was introduced to help policymakers screen the relative competitiveness of CCUS as a mitigation option across multiple domains. This framework was applied across a number of case studies, including the United States, the UK, Indonesia, Australia and Japan, to highlight under what circumstances CCUS might prove to be a valuable mitigation option to help these jurisdictions achieve time-bound mitigation goals.
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The aim of this review is to evaluate the techno-economic viability of AMC, and the comparative maturity of the technology, based on publicly available information. This report is primarily concerned with magnesium-silicate rich mine tailings and ex situ processing to induce carbonation suitably reactive rock. Magnesium silicate rocks can potentially offer significant volumes of material for CO₂ capture compared with calcium-based materials
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IEAGHG commissioned a study to investigate how captured CO₂ can be used in building materials. It also explored the processes that are used to capture this CO₂ and includes case studies where these processes are happening. The work has evaluated CO₂ utilisation in the context of cement and concrete production by looking into the effects of carbonation on material utilisation and the design of a potential carbonation plant. The market analysis and market pull of carbonated building products is also covered.
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The aim of this study is to present a holistic assessment of the viability (both technically and from a market perspective) of carbon capture and utilisation (CCU) routes and to identify areas of strength and weakness within individual routes, compare different CCU pathways, and identify common drivers, barriers, and enablers. The results of this study will be of interest to the technical community, as well as industry and manufacturers. The study assessed commodities across four different CCU categories (building materials, chemicals, polymers and fuels) regarding their mitigation potential, market uptake potential, technical scalability and other impacts.
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The aim of this study is to assess the feasibility of select carbon capture and utilisation (CCU) routes based upon CO₂ conversion through hydrogenation, in terms of their climate change mitigation potential. The results of this study will be of interest to organisations/individuals involved with climate-change scenario modelling, as well as RD&D financial sponsors. The commodities selected for investigation were methanol, formic acid, and middle distillate hydrocarbons (synthetic fuels: diesel, gasoline, jet fuel), with a focus on catalytic hydrogenation pathways. Results of CO₂ emissions, costs and energy consumption for formic acid, however, will not be presented in detail in this Overview, as the analysis has shown that the abatement is limited to 2 MtCO₂ due to the small market size. (Results for formic acid are available in the full report.)
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Understand how the costs of CCUS technologies can impact your projects.
View All Costs Publications
This study explores the interdependencies of different power generation technologies in a highly decarbonised future.
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CCS, in the context of power CCS technologies, will be an essential component of the portfolio of technologies required to reach net-zero emissions in the power sector. This study explores the potential to reduce the cost and accelerate the uptake of power CCS technologies.
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This study, undertaken on behalf of IEAGHG by Element Energy (now a part of ERM), explores the role of CCS in decarbonising small-scale industry and power generation applications. While relatively under investigated compared to their larger scale counterparts, reaching net zero will be dependent on successfully addressing the emissions from small-scale facilities. The findings from the study will be of interest to the broader energy community but, in particular, should benefit project developers, the finance community and policymakers.
Read more
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This study primarily presents a comparative analysis of steelmaking pathways to cost-effectively decarbonise a steel mill, taking a life-cycle perspective on associated environmental impacts. The roll-out of clean steel technologies is envisioned to have a significant implication for support infrastructure. Therefore, a secondary objective of the study is to gain insights into the primary energy and infrastructure implications associated with large-scale deployment of different steel decarbonisation pathways. Clean steel production will likely be more expensive than steel produced today; this poses additional economic strains on steel producers and consumers. Consequently, a third objective is to estimate the price premium that clean steel could command in existing and future markets. Further, this study formulates recommendations for key stakeholders to support the sector and outlines recommendations for further work.
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The 7th edition of the IEAGHG CCS Cost Network Workshop was hosted at the University of Groningen, Netherlands, on 12-13 April 2023. The purpose of the workshop was to share and discuss the most current information on the costs of carbon capture and storage (CCS) in various applications, as well as the outlook for future CCS costs and deployment. For the first time, this workshop also included a session on the direct capture of CO₂ from the atmosphere. The workshop also sought to identify other key issues or topics related to CCS costs that merit further discussion and study.
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This study aims to assess the costs and greenhouse gas (GHG) emissions performance of selected electrochemical CO₂ conversion pathways. It applies a learning curve method to project costs up to 2050.
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As policymakers consider options at their disposal to achieve the goals of the Paris Agreement, understanding the socio-economic impacts on local communities and industrial regions is crucial. Integrated assessment models (IAMs) often lack the economic, social and geographic detail to fully reveal the role that CCS and CDR technologies, such as BECCS, can play in national economies – noting that deployment of both CCS and BECCS has long continued to lag expectations. Providing a multi-regional, technology agnostic and transparent quantification of the social value of these technologies may be essential to unlocking this impasse.
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The primary objective of this study is to review the comparative analysis of blue hydrogen production (that is hydrogen derived from fossil fuels and associated CCS) technologies from oil and oil-based feedstocks as well as the supply chain implication. Further, this study includes techno-economic and life cycle assessments of different technology production configurations in regions that have access to oil resources and potential for the deployment of CCS infrastructure at scale.
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The primary objective of this study is to conduct a techno-economic and environmental assessment of the production of natural gas-based hydrogen with accompanying carbon capture and storage (CCS) technology. Further, the purpose of this study is to enrich knowledge and compare the deployment of steam methane reforming (SMR), electrified SMR (E-SMR), autothermal reforming (ATR), and partial oxidation (POX) with CCS in the Netherlands. The findings of this study will be of interest to policy makers, industrial emitters, as well as technology developers.
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The aim of this study is to provide a transparent framework to evaluate the potential (in terms of sequestered and displaced carbon), and economics (in terms of cost of carbon avoided and removed) of a non-exhaustive selection of NETs pathways. Ecosystem and socio-economic impacts associated with their deployment is also quantified. The study sets out to help the carbon capture and storage (CCS) community in trying to gain a better understanding of the costs and value of NETs. It also helps the modelling community in being able to better model the role of NETs; and policy/decision makers in having more information on costs, value and scalability of NETs.
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Discover the impact and ramifications of CCS policy and regulation.
View All Policy & Regulation Publications
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This work provides a careful and thorough exploration of the major issues involved in the transfer of use of a field from hydrocarbon extraction to CO₂ storage, to identify both the pros and cons of such a transition.
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Over 4 billion tonnes of cement are produced each year, equating to approximately 8% of global anthropogenic CO₂ emissions, and this industry will continue to grow with the expansion of the built environment at a time that emissions need to be reduced. The utilisation or reduction of CO₂ within cement, concrete and building materials could be a valuable way to contribute to emissions reductions in the sector , but there are several barriers, including the current state of standards, regulations and policies. This study will provide useful information for the technical and research community, the CCUS industry, the construction industry, and policymakers, providing an unbiased and non-prescriptive evaluation of international standards and testing relevant to novel carbonaceous building materials to address some of those barriers. The market potential for CO₂ utilisation processes in the construction industry is also investigated, and the methods for certifying and measuring embodied carbon content of carbonated building materials is evaluated and the challenges therein.
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This work assesses the status of and outlooks for international cooperation under Article 6 of the Paris Agreement and considers how approaches could support the deployment of carbon capture and storage (CCS). It provides an up-to-date look at the Article 6 rules, the types of markets and mechanisms that could evolve, and the units that could be traded. It then considers how Article 6 could apply to CCS through linked emissions trading systems, crediting systems and alternative approaches.
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The work aims to summarise and synthesise the two ISO Standards relevant to the geological storage of CO₂: – ISO 27914:2017 (‘Carbon dioxide capture, transportation and geological storage – Geological storage’) and ISO 27916:2019 (‘Carbon dioxide capture, transportation and geological storage – Carbon dioxide storage using enhanced oil recovery (CO₂-EOR)’) – to provide a high-level understanding of the content into an easily digestible format. By comparison with international regulatory frameworks, and providing case studies of how applicable the standards are to real CO₂ storage projects, the study provides a comprehensive overview and concludes on the usefulness of the documents in supporting the implementation of CCUS projects. For the purposes of this overview, the standards will hereafter be referred to as ISO 27914 and ISO 27916
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This report builds upon previous IEAGHG studies on the topic of carbon capture and utilisation (CCU) in order to assess the potential of a portfolio of CCU technologies to contribute towards Japan’s climate change mitigation goals in 2030 and 2050.
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The London Convention and London Protocol are the global treaties that protect the marine environment from pollution caused by the dumping of wastes. Since 2006, the London Protocol has provided a basis in international environmental law to allow carbon dioxide (CO₂) storage beneath the seabed when it is safe to do so, and to regulate the injection of CO₂ into sub-seabed geological formations for permanent isolation. However, Article 6 of the London Protocol prohibits the export of waste or other matter for dumping in the marine environment. Therefore in 2019, Contracting Parties to the London Protocol adopted a resolution to allow provisional application of the 2009 amendment to Article 6 of the Protocol to allow export of CO₂ for storage in sub-seabed geological formations in advance of its ratification, which was progressing slowly.
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The overall objective of this assessment was to improve the availability and accessibility of information regarding the relevance of CCS in contributing to the achievement of the Sustainable Development Goals. The primary objective was achieved through the completion of three key goals: <ol> <!– wp:list-item –><!– wp:list-item –><li>Collation of existing information on impacts of CCS on specific targets of the 17 SDGs, using the rating, scoring and information assessment as per IPCC’s SR1.5,</li><!– /wp:list-item –><!– /wp:list-item –> <!– wp:list-item –><!– wp:list-item –><li>Articulation of specific gaps in information, and</li><!– /wp:list-item –><!– /wp:list-item –> </ol> Proposal of a path forward by providing a prioritised lists of gap closures.There is a growing body of literature orientated towards converting climate action into policies directed towards implementation of SDGs. There is also a trend of material becoming available examining the interaction of technologies and sectors against SDGs. CCS remains a complex technological solution to climate change, and public understanding of the technology remains low. This study can help to substantiate the wider value of CCS, but it can also highlight points of attention/action on potentially negative interactions with specific SDGs.
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This report sets out accounting guidelines for measuring greenhouse gas (GHG) emissions and emissions reduction effects arising from technologies involving carbon dioxide capture, utilisation and geological storage (CCUS).The guidelines apply a project- and product-based approach to measure GHG emission reduction effects, based on comparing the emissions for a CCUS activity with the emissions from a comparable activity delivering the same product or service.A modular approach is applied. Firstly, users calculate the GHG effects arising from the capture (and transport) of CO₂ based on the avoided emissions from providing the same service or product as output from the CO₂ source facility, but without CO₂ capture.The resulting estimate of GHG effects from CO₂ capture is carried forward to the utilisation or storage step. In this subsequent step, the GHG emissions from providing the same service without using captured CO₂ is estimated and compared to the GHG emissions of providing the service using captured CO₂. This provides an overall estimate of the cradle-to-gate GHG effect of CCUS activities.Additional guidance is provided on cradle-to-grave assessment, although this is not the primary focus of these guidelines – the Guidelines focus on annualised GHG emissions accounting cycles rather than whole life emissions analysis.
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Over recent years, interest in CO₂ capture and utilisation (CCU) from policy-makers, industry and academics has increased dramatically, although uncertainty remains regarding the technology’s true potential to contribute towards wider greenhouse gas (GHG) emissions reduction goals. A range of views have been expressed in these contexts, but on the whole it remains largely speculative and unproven. Consequently, it is difficult to provide firm opinions on whether CCU technologies can make a meaningful and lasting contribution to tackling climate change. This report provides an assessment of the range of views presented by various stakeholders, and attempts to establish an empirical evidence base upon which to qualify the views and opinions expressed.Additionally, the key way to gain a clearer understanding of the potential for CCU technologies to reduce GHG emissions is to assess the overall energy and carbon balances for different CCU processes, and to take a view on how and whether these could make a contribution to GHG emission reductions. In other words, as noted by the Intergovernmental Panel on Climate Change (IPCC) in its 2005 Special Report on Carbon Dioxide Capture and Storage (SRCCS) ‘further study of the net energy and CO₂ balance of industrial processes that use the captured CO₂ could help to establish a more complete picture of the potential of this option’. Such detailed studies have, at best, only partially been carried out and are heavily reliant on the assumptions made in the analysis. Thus, IEAGHG has commissioned Carbon Counts (UK) Ltd to characterise CCU technologies, as well as their policy support, regulation and emissions accounting.
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The 7th International Workshop on Offshore Geologic CO2 storage was held in Port Arthur, TX, on September 17-18th 2025.
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The workshop aimed to facilitate the exchange of knowledge and insights among a panel of international experts on CO₂ conditioning, with the goal of informing the scope of a technical specification for a comprehensive IEAGHG report.
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The 7th edition of the Post Combustion Capture Conference (PCCC-7) was held on the 25?28 September 2023 and was jointly hosted by the IEAGHG, U.S. Department of Energy (DOE) and the National Energy Technology Laboratory (NETL) and sponsored by Worley, Shell, and Mitsubishi Heavy Industries. (MHI).
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The IEAGHG Monitoring Network aims to assess new technologies and techniques in the monitoring of CO₂ storage, determine the limitations, accuracy and applicability of monitoring techniques, disseminate information from research and pilot storage projects around the world, develop extensive monitoring guidelines for the different sub-categories of geological storage; oil and gas fields, unmineable coal seams, and saline aquifers covering the differing conditions and reservoir properties encountered globally as well as to engage with relevant regulatory bodies.
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The 6th International Workshop on Offshore Geologic CO₂ Storage was held in Aberdeen on 13-14 September. Organised with the University of Texas and hosted by the University of Aberdeen. The loca on was very appropriate as we were co-hosted and sponsored by Storegga who leads the Acorn project nearby in Scotland. This project had been recently announced by the UK government as a Track 2 Cluster project. This 6th workshop had 190 delegates (60 in-person and 130 virtual) from 35 countries, with a good mix of industry, researchers and regulators.
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The 7th edition of the IEAGHG CCS Cost Network Workshop was hosted at the University of Groningen, Netherlands, on 12-13 April 2023. The purpose of the workshop was to share and discuss the most current information on the costs of carbon capture and storage (CCS) in various applications, as well as the outlook for future CCS costs and deployment. For the first time, this workshop also included a session on the direct capture of CO₂ from the atmosphere. The workshop also sought to identify other key issues or topics related to CCS costs that merit further discussion and study.
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The Risk Management Network meeting was held as an in-person event with a particular focus on the risk of wells (particularly legacy wells) in a CCS project, looking at the topic from basin scale through to detailed characterisation of well materials and monitoring. Attended by over 75 delegates from 15 countries, the two day meeting was held at Heriot-Watt University in Edinburgh, UK. It was kicked off by a welcome reception in the Lyell Centre (home to both BGS and the Institute for GeoEnergy Engineering) and was followed by a field excursion to explore the geological history of Arthur’s Seat in Edinburgh and a tour of a very new distillery located in an old train station within stone’s throw of Holyrood Park.
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The 9th High Temperature Solid Looping Cycles Network (HTSLCN) Meeting took place from 14th to 15th March 2023 at Palazzo Farnese in Piacenza, Italy, hosted by the CLEANKER consortium. 82 attendees enjoyed a two-day programme with a total of 28 presentations, the official closure of the CLEANKER project with a visit to the pilot plant, a relaxing dinner and a guided tour in the museum of Palazzo Farnese about the millennial history of the city of Piacenza and its territory, from the preRoman age to the XX century.
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This 5th Workshop on Offshore Geologic CO₂ Storage covered multiple subjects, including: summary of multiple CCS projects worldwide, subsurface considerations for depleted hydrocarbon fields, containment/ pressure management, and saline formations to store CO<sub>2</sub>, as well as considerations on regulating offshore CCS, monitoring offshore CCS projects, CO₂ shipping and infrastructure for CO₂. Importantly, this is the first hybrid in-person and virtual workshop, which represents a milestone to bring this knowledge sharing to multiple people interested on CCS worldwide
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The aim of the workshop was to provide members and other stakeholders with an update on the status of CDR, identify crucial knowledge gaps and the mechanisms to resolve them, and find possible cooperation/collaboration opportunities.
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Learn how public perception of CCS can affect projects.
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As policymakers consider options at their disposal to achieve the goals of the Paris Agreement, understanding the socio-economic impacts on local communities and industrial regions is crucial. Integrated assessment models (IAMs) often lack the economic, social and geographic detail to fully reveal the role that CCS and CDR technologies, such as BECCS, can play in national economies – noting that deployment of both CCS and BECCS has long continued to lag expectations. Providing a multi-regional, technology agnostic and transparent quantification of the social value of these technologies may be essential to unlocking this impasse.
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This work looked into adopting a place-based approach to better understand responses of the public to the siting of projects involving low-carbon technologies. The research examined public reactions to an offshore wind farm, a power line proposal and a tidal energy project in the UK. Theorising the concept of ‘place’ has two aspects to it – a place as a locus of attachment/identity and a place as a centre of meaning. With the latter, these meanings are not fixed and people have different thoughts or feelings about them. ‘Place attachment’ describes the emotional bonds between people and particular environments (which can be attachment or non-attachment), where ‘place identity’ refers to the ways in which places reflect and maintain identities for individuals or groups. This work argues the value of capturing place attachments and their related meanings to explain local responses to siting of infrastructure proposals, but notes that each in isolation is insufficient to explain why. It was felt that there is value in conducting and comparing multiple case studies across contexts and sectors to further examine the influence of place on consumers.
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The overall aim of the Social Research Network is “to foster the conduct and dissemination of social science research related to CCS in order to improve understanding of public concerns as well as improve the understanding of the processes required for deploying projects”.
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The main deliverables from the study will be a series of Briefing Notes (BNs) covering the key information needs of key stakeholders, and a series of shorter Information Sheets (ISs) which provide a more basic introduction to the same topics. Note: the BN’s are the main deliverable of the study, and the ISs will be finalised and circulated after the technical report has been produced and disseminated. The study will work from, but not exclusively from, IEAGHG’s technical studies and reviews to identify the topics requiring BNs and the final BN’s will be reviewed by members of the Social Research Network, among others, as part of the peer review
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The overall aim of the Social Research Network is “to foster the conduct and dissemination of social science research related to CCS in order to improve understanding of public concerns as well as improve the understanding of the processes required for deploying projects”. The objectives of the Network are as follows: <!– wp:acf/columns {"name":"acf/columns","data":{"padding_top":"1","_padding_top":"field_columns_fields_padding_top","padding_bottom":"1","_padding_bottom":"field_columns_fields_padding_bottom","margin_top":"0","_margin_top":"field_columns_fields_margin_top","margin_bottom":"0","_margin_bottom":"field_columns_fields_margin_bottom"},"mode":"preview"} –> <!– wp:acf/column-content {"name":"acf/column-content","mode":"preview"} –> <!– wp:list –><ul> <!– wp:list-item –><!– wp:list-item –><li>Ensure high quality social science research <!– wp:acf/columns {"name":"acf/columns","data":{"padding_top":"1","_padding_top":"field_columns_fields_padding_top","padding_bottom":"1","_padding_bottom":"field_columns_fields_padding_bottom","margin_top":"0","_margin_top":"field_columns_fields_margin_top","margin_bottom":"0","_margin_bottom":"field_columns_fields_margin_bottom"},"mode":"preview"} –> <!– wp:acf/column-content {"name":"acf/column-content","mode":"preview"} –> <!– wp:list –><ul> <!– wp:list-item –><!– wp:list-item –><li>Elevate reputation and acceptance of social science research</li><!– /wp:list-item –><!– /wp:list-item –> <!– wp:list-item –><!– wp:list-item –><li>Consistency of research</li><!– /wp:list-item –><!– /wp:list-item –> </ul><!– /wp:list –> <!– /wp:acf/column-content –> <!– /wp:acf/columns –> </li><!– /wp:list-item –><!– /wp:list-item –> <!– wp:list-item –><!– wp:list-item –><li>Identifying gaps</li><!– /wp:list-item –><!– /wp:list-item –> <!– wp:list-item –><!– wp:list-item –><li>Promoting a learning environment</li><!– /wp:list-item –><!– /wp:list-item –> <!– wp:list-item –><!– wp:list-item –><li>Building capacity within the Network</li><!– /wp:list-item –><!– /wp:list-item –> <!– wp:list-item –><!– wp:list-item –><li>Translate information from studies into tools or applied lessons <!– wp:acf/columns {"name":"acf/columns","data":{"padding_top":"1","_padding_top":"field_columns_fields_padding_top","padding_bottom":"1","_padding_bottom":"field_columns_fields_padding_bottom","margin_top":"0","_margin_top":"field_columns_fields_margin_top","margin_bottom":"0","_margin_bottom":"field_columns_fields_margin_bottom"},"mode":"preview"} –> <!– wp:acf/column-content {"name":"acf/column-content","mode":"preview"} –> <!– wp:list –><ul> <!– wp:list-item –><!– wp:list-item –><li>Apply insights to actual projects</li><!– /wp:list-item –><!– /wp:list-item –> <!– wp:list-item –><!– wp:list-item –><li>Interact with technical experts</li><!– /wp:list-item –><!– /wp:list-item –> <!– wp:list-item –><!– wp:list-item –><li>Communicate results to policy makers</li><!– /wp:list-item –><!– /wp:list-item –> <!– wp:list-item –><!– wp:list-item –><li>Ensure application is grounded in theory</li><!– /wp:list-item –><!– /wp:list-item –> </ul><!– /wp:list –> <!– /wp:acf/column-content –> <!– /wp:acf/columns –> </li><!– /wp:list-item –><!– /wp:list-item –> <!– wp:list-item –><!– wp:list-item –><li>Create a clearing house of social science research</li><!– /wp:list-item –><!– /wp:list-item –> </ul><!– /wp:list –> <!– /wp:acf/column-content –> <!– /wp:acf/columns –>
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The two day workshop discussed methodologies and techniques, working in contentious environments, social science CCS research in Japan, learnings from other energy technology research, use of social media, knowledge gaps which need to be addressed in future research and future aims of the IEAGHG Social Research Network (SRN).
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As this was the first IEA GHG Social Research Network meeting, group discussions took place to identify the overarching aims and objectives of the network. After much discussion and reiteration it was agreed that the overarching aim should be: To foster the conduct and dissemination of social science research related to CCS in order to improve understanding of public concerns as well as improve the understanding of the processes required for deploying projects
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This report was commissioned by the IEA Greenhouse Gas R&D Programme (IEA GHG) to assist the Carbon Sequestration Leadership Forum (CSLF) task force in the assessment of international graduate degrees at MSc and PhD level on Carbon Dioxide Capture, Storage, and Carbon Management (hereinafter CCSM) from universities. The scope of this report is to identify academic perspectives and programs in the areas of CCSM currently available in the United Kingdom (UK). The information assembled in this report was sought from the internet, email contacts and visiting key universities. This report addresses the major findings and discusses the current landscape of CCSM education in the UKThis report has concentrated on courses provided in the UK. In addition, mention should be made that from a base in the UK the IEA GHG organises an annual International CCS Summer School. This is hosted at different locations worldwide each time; Germany, Canada and Australia in the first three years. This course offers an intensive week in all aspects of CCS, from capture to storage, and non-technical topics such as economics, policy, regulation, safety and public communication.
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To undertake this review of media impact IEA GHG agreed contracts with two specialist organisations. The first of these studies was agreed with the Copernicus Institute, University of Utrecht, the Netherlands and the second with Tyndall Centre, University of Manchester, UK. Two contracts were agreed because of the different approaches used and the different geographical distribution of the media searches proposed. The Copernicus Institute proposed to use a web based search tool to review media articles in the European press, the countries covered included; UK , Netherlands, France, Spain , Italy and Germany. In contrast, the Tyndall Centre study involved a dedicated exercise where an individual would review news articles in the English speaking press alone. This review covered newspaper articles in: UK, USA, Canada, Australia and New Zealand. In each case, articles were scanned for three months before the release of the IPCC SRCCS (released week 39, 26th -30th September 2005) and for three months after. Overall, it was considered that the two studies gave a good global coverage of media response covering most regions of the world that were actively developing CCS projects with the noted exception of Japan.
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Get insight and analysis on developments in the CCS sector.
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This report is a focused review of recent developments regarding insurance coverage for carbon dioxide (CO₂) geological storage projects. It seeks to address the following: what companies are offering or planning to offer insurance to CO₂ storage projects, what is the scope and duration of the coverage offered, and does coverage extend to the transportation of CO₂ to the project site? This work and report was prepared by Franz Hiebert.
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This study was undertaken on behalf of IEAGHG by Foresight Transitions Ltd. While a technology may be technically mature, it has become increasingly clear that the technology may not necessarily be considered commercially ‘bankable’ by investors. In this study, the potential for an index or indices to provide that confidence was explored. The findings from the study will be of interest to the broader energy community but, in particular, should benefit technology developers, CCUS end users, investors and policymakers.
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The driver behind this study is to develop a report built on the on the previous IEAGHG report on methods of leakage mitigation (2007/11). The proposed study should focus on current mitigation and remediation methods that may be applied or considered in site specific conditions in the event of unpredicted CO₂ migration. Each geological storage site will have an adaptive site specific monitoring plan, based on a risk assessment. Detection of a significant irregularity may involve supplementing the monitoring program, in order to detect a possible leak and if necessary engaging mitigation measures.
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This technical review provides an insight into how the focus of research in the field of Carbon Capture, Utilisation and Storage (CCUS) has evolved across a decade, from 2012–2022. It is designed to help understand where the most research has been conducted, and to see where CCUS research is going.
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IEAGHG has commissioned several technical studies linked to large CCS projects1. Although constructability and operational challenges have been identified in previous IEAGHG reports, some aspects were unique due to the locations where the large CCS projects were implemented. These included the status of the initial facilities and other techno-economic and financial aspects of the specific CCUS projects. IEAGHG identified the need to provide a guide on constructability and operation for new CCS users. The objective of this study is to collect information from CCS projects to support the decisions during the transition from the planning to the execution phase. This study analysed a complete list of large CCUS projects from which relevant experience could be extracted. The projects were divided into three categories: operating projects; under construction or at advanced development; and cancelled projects. Based on the analysed projects, this study has delivered an assessment of potential key areas for success, and a decision tool guide for future projects
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The purpose of IAMs is to quantify the interactions and trade-offs between societal demands for energy, economic and environmental services, using a systems approach. These systems are typically the energy system, the economy, the earth-land system, the water system and atmospheric climate system, although every IAM does not necessarily include all these systems and have varying
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This report investigates a unique combination of these industry drivers on the historic, current and future status of the petrochemical industry to gain insight into the sustainability of petrochemicals. Three categories of petrochemicals are subject to analysis, namely methanol, olefins and ammonia/urea. For each of these petrochemicals, the following series of studies are formed and analysed in aggregate to gain insight in to the sustainability prospects of the industry:<!– wp:acf/columns {"name":"acf/columns","data":{"padding_top":"1","_padding_top":"field_columns_fields_padding_top","padding_bottom":"1","_padding_bottom":"field_columns_fields_padding_bottom","margin_top":"0","_margin_top":"field_columns_fields_margin_top","margin_bottom":"0","_margin_bottom":"field_columns_fields_margin_bottom"},"mode":"preview"} –> <!– wp:acf/column-content {"name":"acf/column-content","mode":"preview"} –> <!– wp:list –><ul><!– wp:list-item –><!– wp:list-item –><li>An assessment of the historic and current status of market trade, including trends in end-uses, feedstocks, demand, production and international trade. Demand projections for each chemical are made based on collected data.</li><!– /wp:list-item –><!– /wp:list-item –> <!– wp:list-item –><!– wp:list-item –><li>Process engineering characterisation of the current and low carbon alternative routes and feedstocks to produce the key petrochemical productions.</li><!– /wp:list-item –><!– /wp:list-item –> <!– wp:list-item –><!– wp:list-item –><li>Environmental life cycle assessment of the various feedstocks and production methods for each petrochemical and a contribution analysis of the key environmental impacts.</li><!– /wp:list-item –><!– /wp:list-item –> <!– wp:list-item –><!– wp:list-item –><li>Market projection of petrochemical production and technology mixes for a key region China, for the time period 2010 – 2050.</li><!– /wp:list-item –><!– /wp:list-item –> <!– wp:list-item –><!– wp:list-item –><li>A series of expert stakeholder interviews on views of how the petrochemical industry may progress in terms of demand, costs, environmental impacts and policy drivers.</li><!– /wp:list-item –><!– /wp:list-item –></ul><!– /wp:list –> <!– /wp:acf/column-content –> <!– /wp:acf/columns –>
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In April 2013, the first commercial-scale, steam methane reformer hydrogen production facility incorporating vacuum-swing adsorption carbon capture gas separation technology began full-scale operation at Air Products’ facilities located on the site of the Valero Port Arthur Refinery in Texas, USA. This report summarizes the experience of Air Products and its partners that will provide valuable insights to other petroleum refining and petrochemical industrial facilities that wish to reduce their lifecycle greenhouse gas emissions through CCUS.
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It is widely considered that deployment of carbon capture and storage (CCS) for clusters of energy intensive industries (EIIs) will become vital for meeting long-term greenhouse gas (GHG) reduction targets, and is a cost effective way for doing so, according to organisations such as the International Energy Agency (IEA) and Intergovernmental Panel on Climate Change (IPCC). In addition, it will be important to develop the related finance mechanism quickly to prevent carbon leakage, i.e. businesses transferring operations to places with less stringent GHG emission standards. Recent evidence highlights there might be different needs and challenges in deployment of industrial clusters, compared to those involving power generation. IEAGHG’s Technical Report 2015/03 “Carbon capture and storage cluster projects: review and future opportunities” reviews 12 CCS cluster projects and finds that the most successful clusters are currently based on CO₂-EOR in North America. This is to be expected as EOR provides a commercial benefit to investors in such activities.Further requirements for ICCS clusters include: generating confidence for per-investment in CCS infrastructure, new methods to attract international investment and systematic development of CCS cluster business plans. However, more information is necessary regarding the transferability of conclusions for CCS clusters based on power generation incentives, such as a UK Contract for Difference (CfD), to those involving multiple industry sectors, and especially EIIs.This study examines the economic and commercial arrangements needed to enable the global deployment of industrial CCS clusters. Over a period of eight months, with significant input from stakeholders from industry, government and the investment community, the project has identified the key enablers to unlock private investment in ICCS and developed four business models, which are expected to work in various regions around the world including North America, Europe, Australia and China.
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