European Commission carbon removals workshop: ERW and OAE

Cerulogy delivered a European Commission workshop on two carbon removal technologies, in partnership with ICF and Ecodiversity. The ocean is the Earth’s largest reservoir of carbon (in the form of dissolved inorganic carbon, or DIC): by adding alkalinity to the Earth’s surface, watercourses and/or oceans, enhanced rock weathering (ERW) and ocean alkalinity enhancement (OAE) seek to augment this reservoir and stimulate net draw-down of carbon dioxide from the atmosphere.

The one-day workshop took place on 25th September 2025 with the goal of gathering input from experts and stakeholders to inform the CRCF process. Cerulogy and Ecodiversity presented technical reports that provided an overview of how the carbon removal pathways work, challenges in implementation, thorny issues around quantification and baselining, and potential sustainability impacts. Ten ERW/OAE experts from academia and industry presented on specific topics, and participated in discussions.

Review paper on permanent carbon removals

Cerulogy is working for the European Commission Directorate General for Climate Action in partnership with ICF and Fraunhofer ISI on the development of EU certification methodologies for permanent carbon removals. The first document published from this ongoing project is a review of existing certification methodologies for carbon dioxide reductions and removals and of relevant EU legislation. You can download the report from the website of the EU Expert Group on Carbon Removals.

The review paper was discussed at a meeting of the Expert Group on Carbon Removals in October 2023. Below is a link to the recording of the first day of the meeting, where Dr Malins presented the review paper and chaired discussions on carbon removals with DACCS and BECCS.