Watershed customers participate in largest-ever Frontier CDR purchase

Lithos and Watershed logos

Watershed customers Aledade, Boom Supersonic, Canva, SKIMS, Wise, and Zendesk are contributing to $57.1 million in offtake agreements with Lithos—an enhanced weathering supplier—as part of Watershed's partnership with Frontier.

The purchase will remove 154,240 tonnes of CO2 from the atmosphere by 2028. More than half of the purchased tonnes are expected to be delivered by the end of 2025—significantly more carbon removal than has been achieved so far across all CDR pathways worldwide.

Founding Frontier Members Stripe, Alphabet, Shopify, and McKinsey Sustainability, along with Autodesk, H&M Group, JPMorgan Chase, and Workday, also participated in the offtake agreements.

Lithos accelerates the natural ability of rocks to absorb CO2 by spreading superfine crushed basalt on farmlands and measuring the removal empirically in a process known as enhanced weathering. Globally, enhanced weathering approaches could account for 2–4 gigatons of carbon removal per year by 2050, which would fulfill 40% of the projected global carbon removal need.

The scale of this offtake will generate large amounts of field data across diverse soil types and climate conditions. Lithos is committed to sharing this data with scientists and academics to accelerate transparency, scientific collaboration, and the development of more accurate geochemical models. On top of improving our understanding of enhanced weathering as a pathway, this will reduce the need for frequent in-field measurement, which will further drive down cost. Read more about enhanced weathering here.

Lithos's enhanced weathering method
Lithos's method of sourcing ground basalt, spreading it, and measuring permanent CO2 removal.

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