Microsoft has signed a major carbon removal agreement with Exomad Green, a Bolivia-based biochar company, to remove at least 1.24 million tonnes of carbon dioxide over the next decade. The deal is being touted as the largest biochar carbon removal agreement globally, both in volume and durability.
The agreement marks an expansion of Microsoft’s partnership with Exomad, following its earlier purchase of 32,000 tonnes of biochar credits in 2023. According to CDR.fyi, a carbon removal market intelligence platform, Exomad, Microsoft and verification provider Carbonfuture currently represent the leading supplier, buyer, and monitoring service in the voluntary carbon removals sector, respectively.
The carbon credits from this agreement will be verified through Carbonfuture’s digital measurement, reporting, and verification (MRV) platform—deemed critical to ensuring transparency and integrity in the delivery of climate outcomes.
Exomad, headquartered in Santa Cruz, uses forestry residues that would otherwise be burned, converting them into biochar through a process that excludes oxygen. This mineral-rich carbon byproduct is then distributed to local communities, where it is added to soil to enhance its capacity to store carbon. The company aims to sequester one million tonnes of CO₂ annually by 2027.
Exomad’s chief executive Diego Justinianio said the agreement highlights biochar’s potential as a scalable and measurable climate solution with co-benefits such as soil improvement and support for local communities. “Microsoft has shown true climate leadership by recognising the immediate value of biochar,” he noted.
The deal also surpasses earlier contracts by Google, which in January entered separate biochar removal agreements of 100,000 tonnes each with Charm Industrial and India-based Varaha. At the time, Google had described those as the largest such deals to date.
Carbonfuture CEO Hannes Junginger-Gestrich called the Microsoft-Exomad partnership “a new precedent for how quality is built into carbon removal from day one.”
