View original ↗on Carbon Herald
deal · 2023
Climeworks ↔ Lithos Carbon
Climeworks: a firm purchase of 3,500,000 t of enhanced rock weathering (agricultural) removal from Lithos Carbon.
BuyerClimeworks
SupplierLithos Carbon
Tonnes3,500,000 t
Capture pathwayEnhanced rock weathering (agricultural)
Storage mediumocean-dissolved
Commitment typefirm
Deal structureofftake
Source pathway descriptionenhanced rock weathering (ERW) — finely ground basalt rocks spread on croplands to speed up the weathering process, locking away atmospheric CO2 emissions for over 1,000 years
Storage descriptionCO2 locked away for over 1,000 years through enhanced rock weathering
Delivery windowover more than a decade
Project locationUnited States
Verificationregistry-certified
NotesOriginal agreement announced in 2023 for delivery of 3.5 million tons of carbon removal credits. Article dated March 25, 2026 announces a new partnership building on this long-standing working relationship. Lithos is described as the largest ERW developer by issued credits in 2025, with the world's largest ERW delivery to date of 5,160 registry-certified tons at end of previous year. Climeworks is
Durability defaultedtrue
Previous durabilitydurable-1000y
Previous durability basispathway-default
Durability notePathway default removed; duration requires source evidence
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