Phase 1 Accreditation for Surficial Mineral Carbonation – Carbon Credit Markets and Australian Carbon Credit Units (ACCUs)

The Challenge

The mining of ultramafic minerals generates considerable tailings which have the potential for carbon dioxide removal (CDR) through surficial mineral carbonation. Robust methodologies and frameworks to accurately measure and verify CO₂ sequestration would assess both the scale of current passive CDR and the potential for investment and scale up of technologies which aim to accelerate the carbonation processes. There is currently uncertainty among stakeholders in the minerals sector face regarding the eligibility for Australian Carbon Credit Units (ACCUs), as the Clean Energy Regulator requires stringent validation of carbon sequestration claims. This situation could represent a missed opportunity for both environmental benefits and potential economic incentives from carbon credits. 

Proposed Solution

The project will conduct a detailed gap analysis of existing research and methodologies on CO₂ sequestration via mineral carbonation. It aims to develop a standardised framework that aligns with the Clean Energy Regulator’s requirements for ACCU issuance. This will involve compiling international best practices and leveraging ex-situ accreditation models. Additionally, the project will provide recommendations for future research directions and the steps needed for surficial mineral carbonation projects to establish their legitimacy within Australia’s carbon credit framework. 

Proposed Benefits to WA

This project would inform the development of strategic advice for the government and other potential stakeholders on future investment in the research workforce and infrastructure. It will provide a comprehensive knowledge base that consolidates international experience and methodologies to support improved decision-making across stakeholders. It will also ensure that Australian Carbon Credit Units (ACCUs) generated from mineral carbonation projects meet regulatory requirements, contributing to a stable and credible policy environment for sustainable investment. Additionally, the project could support revenue-generating opportunities for mining companies and technology operators through ACCUs, thereby enhancing the commercial viability of carbon removal initiatives.

DOI

10.71342/043436741689