World’s largest biochar carbon removal agreement

World’s largest biochar carbon removal agreement

Friday 23 May 2025

Exomad Green, one of the largest producers of biochar carbon removal (BCR) credits globally, and the largest durable carbon removal (CDR) supplier in terms of delivery, has announced that it has reached a deal with Microsoft which will remove 1.24 million tonnes of CO₂ over a 10-year period. This is the largest BCR deal in history by volume, and among the largest across all forms of durable CDR.

This long-term offtake agreement by Microsoft demonstrates biochar’s capability as a scalable, effective climate solution. The agreement marks the next phase of a proven, trusted relationship between Microsoft, Exomad Green, and Carbonfuture. It builds on previous transactions, the latest being from December 2023, when Microsoft purchased 32,000 tonnes of biochar carbon removal credits.

“Today’s historic deal is testament to the relationship we have formed between Microsoft and Exomad Green, powered by Carbonfuture’s dMRV”, commented Diego Justiniano, CEO of Exomad Green. “Microsoft has shown true climate leadership and commitment by seizing the immediate potential of biochar as a carbon removal solution that is measurable and scalable, while demonstrating significant co-benefits across communities and in improving soil quality.”

Biochar is a stable form of carbon produced by heating biomass in the absence of oxygen. It can be produced with minimal emissions and is a powerful soil enhancer. In this case, biochar is added to soil, where it will remain for hundreds of years, while improving soil health.

Exomad Green’s unique approach transforms sustainable forestry residues – waste biomass that would otherwise be incinerated in firepits at sawmills – into biochar. It then delivers this biochar to local communities to use in agricultural soil improvement programs.

This model delivers several co-benefits for the local indigenous communities and the broader population including soil health enhancement to increase agricultural productivity, reductions in local air pollution, and decreased urban fire risk due to lower incidence of sawmill residue incineration.

Additionally, this deal incorporates several key features that are setting a new benchmark for how large-scale biochar carbon removal agreements are structured across the industry.

Biomass sourcing traceability: Through the implementation of a dedicated Forest Monitoring Center, Exomad Green is able to trace the origin of all biomass, ensuring transparency and enabling consistent monitoring of supplier practices to uphold rigorous biomass sustainability requirements.
Product quality assurance: Regular quality testing ensures that the biochar consistently meets high international standards, reinforcing its value and effectiveness in carbon sequestration and soil enhancement.

As of today, Exomad Green has a market share of 27% of the deliveries according to CDR.FYI data, making it the leading durable CDR supplier, sequestering more than 120.000 tonnes of CO₂ by April 2025. Exomad Green’s BCR production is certified under the Puro.earth Biochar Methodology.

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Source & image credit: Exomad Green

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