View original ↗on un-do.com
deal · 24 September 2024
Microsoft ↔ UNDO
Microsoft: a firm purchase of 15,000 t of enhanced rock weathering (agricultural) removal from UNDO.
BuyerMicrosoft
SupplierUNDO
Tonnes15,000 t
Capture pathwayEnhanced rock weathering (agricultural)
Storage mediumsoil
Commitment typefirm
Deal structureofftake
Source pathway descriptionEnhanced rock weathering (ERW) — spreading 65,000 tonnes of crushed silicate rock across the United Kingdom (40,000 tonnes of basalt) and Canada (25,000 tonnes of wollastonite) on agricultural land, where rainwater containing CO₂ reacts with the crushed rock, locking up CO₂ as bicarbonate for 100,000+ years
Storage descriptionPermanent storage as bicarbonate in solid mineral form for 100,000+ years
Project locationUnited Kingdom and Canada (Ontario and planned expansion to Québec)
NotesThis is a follow-on deal; UNDO's initial Microsoft contract in 2023 was for 5,000 tonnes CO₂ removal. The deal includes funding for scientific research in ERW measurement, reporting and verification (MRV), with field trials and monitoring sites established at University of Guelph, Queen's University Kingston, and Newcastle University.
Durability defaultedtrue
Previous durabilitydurable-1000y
Previous durability basispathway-default
Durability notePathway default removed; duration requires source evidence
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