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deal · 21 May 2025
Microsoft ↔ Exomad Green
Microsoft: a firm purchase of 1,240,000 t of biochar removal from Exomad Green.
BuyerMicrosoft
SupplierExomad Green
Tonnes1,240,000 t
Capture pathwayBiochar
Storage mediumsoil
Commitment typefirm
Deal structureofftake
Source pathway descriptionBiochar carbon removal. Biochar is a stable form of carbon produced by heating biomass in the absence of oxygen. Exomad Green transforms sustainable forestry residues – waste biomass that would otherwise be incinerated in firepits at sawmills – into biochar. The biochar is then delivered to local communities to use in agricultural soil improvement programs, where it will remain in soil for hundred
Storage descriptionBiochar added to soil, where it will remain for hundreds of years
Delivery window10 years
Project locationBolivia (Concepción, Riberalta, and nearby communities)
VerificationCarbonfuture MRV+ (contractually embedded for digital tracking and third-party verification); certified under Puro.earth Biochar Methodology
NotesThis is described as the world's largest biochar carbon removal agreement by volume and among the largest across all forms of durable CDR. Agreement includes biomass sourcing traceability through a dedicated Forest Monitoring Center and product quality assurance through regular testing. The deal builds on a previous transaction from December 2023 when Microsoft purchased 32,000 tonnes of biochar c
Durability defaultedtrue
Previous durabilitydurable-100y
Previous durability basispathway-default
Durability notePathway default removed; duration requires source evidence
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More: Exomad Green · Biochar