UNDO Enhanced Rock Weathering – Canada

This project is a pre-purchase for carbon credits that will be generated in the future and can be retired when issued at a future date.

Enhanced rock weathering (ERW) is a highly scalable carbon removal technology that locks up CO2 for 100,000+ years. Rainwater contains CO2 from the atmosphere. When it rains the CO2 interacts with silicate rocks such as wollastonite, locking it up as a solid bicarbonate, where it’s stored. However, natural rock weathering takes hundreds of thousands of years and there really is no time to wait. UNDO enhances and accelerates this process by using crushed silicate rock, which has a greater surface area, and spreading it on agricultural land.

Enhanced rock weathering (ERW) is a high permanence (10,000 - 100,000+ years) solution with significant additional co-benefits such as improvement to soil health, crop health, and crop yield, as well as enhancing rural livelihoods. The advantage of ERW lies in its ability to utilise existing production, infrastructure, and delivery systems, allowing for rapid scaling and implementation. UNDO focuses on basalt and wollastonite because they both have low levels of heavy metals, are rich in mineral and trace elements and are safe for agricultural use.

Ontario, Canada