Explore our Publications Library

CO2 Flow Metering Technologies

• 4 September 2025
• Policy & Regulation
• Transport

The main objective of this study is to raise awareness of the relevance, state of the art, challenges and opportunities of flow metering for carbon capture, utilisation and storage (CCUS). Flow metering of CO2 streams will be critical in supporting trade, protecting consumers, ensuring confidence, facilitating taxation, and meeting CO2 reduction goals and treaty obligations.

The Value of Direct Air Carbon Capture and Storage (DACCS)

• 4 September 2025
• Capture

The aim of this study is to evaluate the value of direct air capture and storage (DACCS) in the energy transition (down to the regional level), accounting for key factors, including carbon removal eiciency, timeliness, durability, land footprint and techno-economic performance.

Review of CO2 storage via in-situ mineralisation in mafic-ultramafic rocks

• 22 August 2025
• Storage

This report evaluates progress, barriers, and knowledge gaps, and provides stakeholders, regulators, and investors with a comprehensive summary of current knowledge and understanding of subsurface carbon mineralisation in mafic-ultramafic reservoirs.

A Critical Study on Waste to Low Carbon (CCS-abated) Hydrogen

• 23 April 2025
• Utilisation

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.

Reviewing the implications of unlikely but potential CO2 migration to the surface or shallow subsurface

• 29 January 2025
• Storage

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.

Analysis of Electrolytic Hydrogen Technologies with a Comparative Perspective on Low-Carbon (CCS-Abated) Hydrogen Pathways

• 4 December 2024
• Utilisation

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.

Measurement, reporting and verification and accounting for carbon dioxide removal in the context of both project-based approaches and national greenhouse gas inventories

• 15 October 2024
• Industry Insights
• Policy & Regulation

The Role of Low Emissions Dispatchable Power in the Lowest Cost Net Zero System

• 20 September 2024
• Costs of CCUS

This study explores the interdependencies of different power generation technologies in a highly decarbonised future.

Geological Storage of CO₂: Seal Integrity Review

• 10 September 2024
• Storage

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.

Managing the transition of depleted oil and gas fields to CO₂ storage

• 12 August 2024
• Policy & Regulation
• Storage

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.

Power CCS: Potential for cost reductions and improvements

• 5 August 2024
• Capture
• Costs of CCUS

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.

Clean steel an environmental and technoeconomic outlook of a disruptive technology

• 1 March 2024
• Capture
• Costs of CCUS

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.