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.