View original ↗on thewhig.com
deal · 9 September 2025
UNDO ↔ Canadian Wollastonite
UNDO: a firm purchase of 450,000 t of enhanced rock weathering (agricultural) removal from Canadian Wollastonite.
BuyerUNDO (stated as UNDO Carbon)
SupplierCanadian Wollastonite
Tonnes450,000 t
Capture pathwayEnhanced rock weathering (agricultural)
Storage mediumsoil
Commitment typefirm
Deal structureofftake
Source pathway descriptionrock weathering program using wollastonite spread on farm fields to capture and hold onto carbon dioxide from rainwater, stabilise soil pH, improve nutrient availability, and enhance crop resilience
Storage descriptioncarbon dioxide captured and held in soil through rock weathering process
Delivery windowthree-year deal
Project locationEastern Ontario, Canada
NotesUNDO Carbon is UK-based and won $100 million XPRIZE Carbon Removal competition in April 2025 as one of four global winners for its operations in Eastern Ontario. So far 8,500 hectares at 162 farms have received subsidized wollastonite application; UNDO plans to expand to 2,000 Eastern Ontario farms. Kingston city subsidizing trucking costs for wollastonite.
Durability defaultedtrue
Pathway noterecoded from other-emerging on 2026-09-01, the source describes wollastonite spread on farm fields
Previous durabilitydurable-1000y
Previous durability basispathway-default
Durability notePathway default removed; duration requires source evidence
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